Journal articles: 'Composite materials. Machining. Cutting'

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Wu, Ming Yang, Mu Lin Tong, Yi Wen Wang, Wei Ji, and Yu Wang. "Study on Carbon Fiber Composite Materials Cutting Tools." Applied Mechanics and Materials 401-403 (September 2013): 721–27. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.721.

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With the carbon fiber reinforced plastic(CFRP) materials more and more widely being used in aviation, aerospace and other industries, the study of the secondary processing technology of composite materials is paid attention by scholars from home and abroad. Because the composite materials has characteristics such as high hardness, high strength, light weight, anisotropic and etc, it is easy to produce hierarchical, tearing, burrs, drawing, the collapse of block and other defects in the machining process, so it belongs to a typical difficult-to-machine materials. Firstly the type and characteristics of carbon fiber composite materials were analyzed. Basing on the basic principles of composite material machining the carbon fiber composite machining defects were analyzed, and the design and optimization suggestions of the carbon fiber composite cutting tool were put forward according to its machining characteristics. The tool solutions of the drilling problems of carbon fiber composites in different areas currently facing were explored. Under the basis of theoretical research and analysis, a new type of PCD tool was designed and developed and through comparing test the optimal edge was got. Through experimental research the tool geometry parameters and cutting parameters which were suitable for machining were analyzed, and the tool life problems were analyzed too. All these laid a foundation to realize carbon fiber composite materials cutting of high efficiency and high quality.

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Gordon, S., and M. T. Hillery. "A review of the cutting of composite materials." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 217, no. 1 (January 1, 2003): 35–45. http://dx.doi.org/10.1177/146442070321700105.

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The increased use of composite materials has led to an increase in demand for facilities to machine them. There are significant differences between the machining of metals and alloys and that of composite materials, because composites are anisotropic, inhomogeneous and are mostly prepared in laminate form before undergoing the machining process. In most cases, traditional metal cutting tools and techniques are still being used. While the process of metal cutting has been well researched over the years, relatively little research has been carried out on the cutting of composite materials. This paper presents a brief review of research on the cutting of fibre reinforced polymer (FRP) composites and medium-density fibreboard (MDF). Most of the research published is concentrated on the chip formation process and cutting force prediction with unidirectional FRP materials. A review of some recent research on the prediction of cutting forces for MDF is also presented.

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Zhang, Jing Ying, Qi Xun Yu, Si Qin Pang, and Z. F. Zhu. "Study on the Machining Technology of Composite Materials." Materials Science Forum 471-472 (December 2004): 876–80. http://dx.doi.org/10.4028/www.scientific.net/msf.471-472.876.

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The kinds and the properties of composite materials and superhard cutting-tool materials are introduced in this paper. By using five kinds of superhard cutting tools, such as polycrystal cubic boron nitride (PCBN), polycrystal diamond (PCD), thin film and thick film of chemical vapor deposition (CVD) diamond and carbon nitride (CxNy), two kinds of composite materials (fiber reinforced and particle reinforced) have been turned. Many experiment data have been gotten. It is shown that the superhard cutting tool is the best for machining composite materials. Moreover, surface finish and cutting force in composite material machining are discussed.

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Bai, Yang, Pei Quan Guo, and Ning Fan. "Research Progress of High Speed Cutting for SiCp_Al Composite Materials." Materials Science Forum 800-801 (July 2014): 3–8. http://dx.doi.org/10.4028/www.scientific.net/msf.800-801.3.

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Summarized the research and development of high speed machining of SiCp/Al composites. Emphasized the research status of high speed cutting of SiCp/Al composite materials, including machined surface quality and tool wear condition. Machined surface quality contains surface roughness and surface defects. The tool wear conditions are different because of different types of cutting tools, but the wear of the rake face, the rear face and the cutting edge are all involved.

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Liu, En, Xiao Ping Hu, and Bao Hua Yu. "Research and Development of Ultrasonic CNC Cutting Path Generation System for Nomex Composite Materials." Advanced Materials Research 941-944 (June 2014): 1968–72. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.1968.

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There are a number of problems with the traditional way of machining Nomex composite materials, Ultrasonic vibration cutting as a new method can overcome most of the problems. This paper presents the machining process characteristics of ultrasonic cutting honeycomb structures of Nomex composite materials using two kinds of specials tools, and has a research on Ultrasonic machining tools posture control strategy, then proposed calculation method of generating the cutter location date. The main system was developed to meet the automatic generation cutting path of Nomex composite materials based on VS2008 and UG commercial software. The result of experiment shows this system can automatic generate rational machining path and correct NC date.

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Xie, Nian Suo, and Jin Wang. "Study on Preparation and Machining Performance of SiC/Cu Composites." Applied Mechanics and Materials 174-177 (May 2012): 425–28. http://dx.doi.org/10.4028/www.scientific.net/amm.174-177.425.

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SiC/Cu composite materials were fabricated by powder metallurgy, and microstructure of composite was analyzed by means of metallographic microscope. The high speed steel tool and cemented carbide tool are used as cutters, and machining performance of SiC/Cu Composites were studied by cutting lathe and wire-electro discharge machine. The relationship between wire-electro discharge machining cutting speed and pulse interval were studied by wire-electro discharge machine. The results show that the composite cutting surface roughness increases with increasing of the content of SiC particles when the size of SiC is 40μm, while composite cutting surface roughness decreases with increasing of the content of SiC particles when the size of SiC is 20μm, the cemented carbide tolls have longer life than high-speed steel tools. The surface roughness of composite increases with the increasing of source voltage, but it decreases with increasing of pulse interval in the wire-electro discharge machining cutting conditions.

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Pathapalli, Venkateshwar Reddy, Meenakshi Reddy Reddigari, Eswara Kumar Anna, P. Srinivasa Rao, and D. V. Ramana Reddy. "Modeling of the machining parameters in turning of Al-5052/TiC/SiC composites: a statistical modeling approach using grey relational analysis (GRA) and response surface methodology (RSM)." Multidiscipline Modeling in Materials and Structures 17, no. 5 (June 29, 2021): 990–1006. http://dx.doi.org/10.1108/mmms-01-2021-0017.

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PurposeMetal matrix composites (MMC) has been a section which gives an overview of composite materials and owing to those exceptional physical and mechanical properties, particulate-reinforced aluminum MMCs have gained increasing interest in particular engineering applications. Owing to the toughness and abrasive quality of reinforcement components such as silicon carbide (SiC) and titanium carbide (TiC), such materials are categorized as difficult materials for machining. The work aims to develop the model for evaluating the machinability of the materials via the response surface technique by machining three distinct types of hybrid MMCs.Design/methodology/approachThe combined effects of three machining parameters, namely “cutting speed” (s), “feed rate” (f) and “depth of cut” (d), together with three separate composite materials, were evaluated with the help of three performance characteristics, i.e. material removal rate (MRR), cutting force (CF) and surface roughness (SR). Response surface methodology and analysis of variance (ANOVA) both were initially used for analyzing the machining parameters results.FindingsThe contours were developed to observe the combined process parameters along with their correlations. The process variables were concurrently configured using grey relational analysis (GRA) and the composite desirability methodology. Both the GRA and composite desirability approach obtained similar results.Practical implicationsThe results obtained in the present paper will be helpful for decision-makers in manufacturing industries, who work on metal cutting area especially composites, to select the suitable solution by implementing the Grey Taguchi and modeling techniques.Originality/valueThe originality of this research is to identify the suitability of process parameters combination based on the obtained research results. The optimization of machining parameters in turning of hybrid metal matrix composites is carried out with two different methods such as Grey Taguchi and composite desirability approach.

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Líska, János, and János Kodácsy. "Tool Wear and Cutting Temperature at Machining of Composites." Advanced Materials Research 325 (August 2011): 381–86. http://dx.doi.org/10.4028/www.scientific.net/amr.325.381.

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Nowadays composite materials are used in many industrial areas. The main application of these is the aircraft industry. Problematic points with machining of composite materials are tool wear, tool life and temperature during machining of polymer composite materials. In the first part of this investigation, the tool wear of sintered carbide (SC) with AlTiN coat milling tools in various cutting conditions has been studied. The second part deals with the problem of cutting temperature during machining of GFRP composite materials in different cutting conditions. In the end, the results illustrated in graphs and figures were evaluated.

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Kiliçkap, Erol, Ahmet Yardimeden, and Yahya Hışman Çelik. "Investigation of experimental study of end milling of CFRP composite." Science and Engineering of Composite Materials 22, no. 1 (January 1, 2015): 89–95. http://dx.doi.org/10.1515/secm-2013-0143.

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AbstractCarbon fiber-reinforced plastic (CFRP) composites are materials that are difficult to machine due to the anisotropic and heterogeneous properties of the material and poor surface quality, which can be seen during the machining process. The machining of these materials causes delamination and surface roughness owing to excessive cutting forces. This causes the material not to be used. The reduction of damage and surface roughness is an important aspect for product quality. Therefore, the experimental study carried out on milling of CFRP composite material is of great importance. End milling tests were performed at CNC milling vertical machining center. In the experiments, parameters considered for the end milling of CFRP were cutting speed, feed rate, and flute number of end mill. The results showed that damage, surface roughness, and cutting forces were affected by cutting parameters and flute number of end mill. The best machining conditions were achieved at low feed rate and four-flute end mill.

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Yanyushkin, A. S., and D. A. Rychkov. "The Process of Composite Materials Machining Cutting Tools Profiling." Procedia Engineering 206 (2017): 944–49. http://dx.doi.org/10.1016/j.proeng.2017.10.576.

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Yardimeden, Ahmet. "Investigation of optimum cutting parameters and tool radius in turning glass-fiber-reinforced composite material." Science and Engineering of Composite Materials 23, no. 1 (January 1, 2016): 85–92. http://dx.doi.org/10.1515/secm-2013-0301.

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AbstractGlass-fiber-reinforced composite materials (GFRPs) are used widely in various fields of engineering. Turning is the principal process conducted on these materials for obtaining minimum surface roughness. Machining of GFRP materials is different from traditional style due to their inhomogeneous and anisotropic structures. Optimum machining parameters for specific GFRP materials need to be ascertained for perfect machining. In this study, the influence of cutting parameters and insert radius on the cutting force and surface roughness of GFRP material during machining was investigated. For measuring main cutting force, a three-component piezoelectric crystal type of dynamometer was used. Cutting force and surface roughness were experimentally measured through longitudinal axes of the GFRP material. Through this study, it was observed that high cutting speeds and low feed rates provide the best surface quality in the turning process of GFRP composite materials.

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Chryssolouris, G., P. Sheng, and W. C. Choi. "Three-Dimensional Laser Machining of Composite Materials." Journal of Engineering Materials and Technology 112, no. 4 (October 1, 1990): 387–92. http://dx.doi.org/10.1115/1.2903347.

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This paper presents a concept for performing three-dimensional laser machining on composite materials, using two intersecting laser beams to create grooves on a workpiece. A volume of material is removed when the two grooves converge. An analysis of the grooving process was conducted for carbon/teflon and glass/polyester materials. A model was developed to determine groove depth from process parameters and material properties. Close agreement was found between model predictions and experimental results for groove depths in carbon/teflon. Model predictions consistently overestimated depth values for continuous-beam glass/polyester results, and underestimated depth values for pulsed-beam glass/polyester at low power/high speed. Corrections for heat losses and high-temperature chemical interactions were added to the model to improve agreement with data. Groove width and damage width results were compared with surface quality standards for laser cutting of composites.

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Alazemi, Fahad Kh A. O. H., Mohd Na’im Abdullah, Mohd Khairol Anuar Mohd Ariffin, Faizal Mustapha, and Eris Elianddy Supeni. "Optimization of Cutting Tool Geometry for Milling Operation using Composite Material – A Review." Journal of Advanced Research in Materials Science 76, no. 1 (January 18, 2021): 17–25. http://dx.doi.org/10.37934/arms.76.1.1725.

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Fibre reinforced composite materials having their own specific advantages are why they currently gain more and more attention. A vital procedure once preparations of materials are done is the machining process. Various secondary operations such as milling, drilling, turning and various unconventional processes are used for achieving near net shape and size of desired component. Compared to conventional materials, fibre reinforced composite materials are more practical to be use in machining process due to less amount of cutting forces are required to complete the exact shape and size of desired component. Therefore, a review on milling of fibre reinforced composite material will be helpful for numerous researchers and other manufacturing industries, which are currently working in this field. This review paper represents the classification of composite materials, Fiber Reinforced Plastic (FRP) Composites and Carbon Fibre Reinforced Plastic (CFRP) Composites. In addition, this review also defines the machinability of CFRP composites selection and tool design of end mill.

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NARESH, Hazari, and Padhy CHINMAYA PRASAD. "Lathe Parameters Optimization for UD-GFRP Composite Part Turning with PCD Tool by Taguchi Method." INCAS BULLETIN 12, no. 4 (December 4, 2020): 135–44. http://dx.doi.org/10.13111/2066-8201.2020.12.4.12.

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The aerospace and automobile sectors are widely utilized the polymer composites. The composite materials, like unidirectional glass fiber reinforced polymer (UD-GFRP), is difficult to machine due to its anisotropic that is non-homogeneous character and such material requires special cutting tools. The proposed work is going to examine the tool wear, quality of the surface and forces generated in the various stages of inputs given to the machining of unidirectional glass fiber reinforced polymer (UD-GFRP) composites. The assessment of the machining incorporates tool wear investigations, surface roughness investigations and quality of material by varying input parameters. The Taguchi optimization technique with experimental design of L9 orthogonal array employed. The parameters range identified by trail runs and observations of conducted machining utilized for optimization. The Turning process parameters of cutting velocity or speed, rate of tool movement or feed rate and cutting depth on composite part or depth of cut were considered. The other factors, like tool material i.e., Poly-Crystalline Diamond (PCD) tool, its cutting regime (dry), profile of cutting tool are considered as constant parameters. The responses, like tool wear, surface finish, and cutting force, were measured against various input parameters, while machining the composite (UD-GFRP) composite part. The objective of this research is to establish relationship among various operating parameters to achieve desired results. That is major focus of the work on the economic condition for getting better values based on setting of input parameters.

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Rajasekaran, T., V. N. Gaitonde, and J. Paulo Davim. "Fuzzy Modeling and Analysis on the Turning Parameters for Machining Force and Specific Cutting Pressure in CFRP Composites." Materials Science Forum 766 (July 2013): 77–97. http://dx.doi.org/10.4028/www.scientific.net/msf.766.77.

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Analysis of the cutting force and specific cutting pressure play vital roles in machining of the composite materials. The present experimental work describes the modeling of machining parameters using one of the soft computing techniques i.e. fuzzy logic for machining force and specific cutting pressure. The basic idea is to machine the carbon fiber reinforced plastic (CFRP) composite materials and measuring the cutting forces and then determining the machining force and specific cutting pressure. 27 experiments based on Taguchis L27 orthogonal array were carried out involving three machining parameters, namely, cutting speed, feed and depth of cut, each defined at three levels. Subsequently the prediction models were developed using three different fuzzy logic membership functions, namely, triangular, trapezoidal and bell shape. It is found that the predicted values of proposed responses such as machining force and specific cutting pressure are very close to the experimental values within the chosen ranges of the process parameters. The statistical analysis using ANOVA on machining parameters are also presented and discussed. The machined surface analyzed through SEM images revealed the damages encountered during turning process.

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Ramulu, Mamidala, Mathew Spaulding, and P. Laxminarayana. "Cutting Characteristics of Titanium Graphite Composite by Wire Electrical Discharge Machining." Advanced Materials Research 630 (December 2012): 114–20. http://dx.doi.org/10.4028/www.scientific.net/amr.630.114.

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To improve strength to weight ratios, the fiber reinforced polymer composite materials are often used in conjunction with another material, like metals, to form hybrid structure. This paper reports the feasibility of using wire electrical discharge machining (WEDM) for cutting Titanium/Graphite Hybrid Composites (TiGr). Slit and slot cuts with WEDM process has been performed. Cutting times and process parameters were recorded, and cut surface characteristics were evaluated both with an optical and scanning electron microscopy (SEM). The results in terms of cutting time, workpiece material removal rate, and damage were presented and discussed. It was found that use of WEDM is possible for machining advanced hybrid metal composite laminates with appropriate machine settings.

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Zhang, Bin, Yanan Du, Hanliang Liu, Lianjia Xin, Yinfei Yang, and Liang Li. "Experimental Study on High-Speed Milling of SiCf/SiC Composites with PCD and CVD Diamond Tools." Materials 14, no. 13 (June 22, 2021): 3470. http://dx.doi.org/10.3390/ma14133470.

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Silicon carbide fiber reinforced silicon carbide ceramic matrix composite (SiCf/SiC composite) is characterized by a high strength-to-density ratio, high hardness, and high temperature resistance. However, due to the brittleness of the matrix material and the anisotropy of the reinforcing phase, it is a huge challenge for machining of the material. The milling method has advantages of a high material removal rate and applicability to complex surface geometry. However, no published literature on milling of SiCf/SiC composite has been found up to now. In this paper, high-speed milling of SiCf/SiC composites was carried out under dry conditions and cryogenic cooling using liquid nitrogen, respectively. Polycrystalline diamond (PCD) and chemical vapor deposition (CVD) diamond cutting tools were used for the milling work. The cutting performance of the two kinds of tools in high-speed milling of SiCf/SiC composites was studied. Tool failure modes and mechanisms were analyzed. The effects of the cooling approach on tool wear and machined surface quality were also investigated. The experimental results showed that under identical cutting parameters and cooling approaches, the PCD tool yielded better cutting performance in terms of a longer tool life and better surface quality than that of the CVD diamond tool. In dry machining, the failure modes of the CVD diamond tool were a large area of spalling on the rake face, edge chipping and severe tool nose fracture, whereas for the PCD tool, only a small area of spalling around the tool nose took place. Compared to the dry machining, the wear magnitudes of both PCD and CVD diamond tools were decreased in cryogenic machining. Additionally, the surface quality also showed significant improvements. This study indicates that the PCD tool is highly suitable for machining of SiCf/SiC composite, and that the cryogenic method can improve machining efficiency and surface quality.

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Янюшкин, Александр, Aleksandr Yanyushkin, Даниил Рычков, Daniil Rychkov, Дмитрий Лобанов, and Dmitriy Lobanov. "Costeffectiveness in polymeric composite material cutting." Bulletin of Bryansk state technical university 2015, no. 4 (December 30, 2015): 173–79. http://dx.doi.org/10.12737/17157.

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The creation of new structural materials for manufacturing parts of various technical destinations is an integral part of modern industry, inasmuch as the requirements to products are mainly directed to the decrease of their mass, hardening, conservation of properties at the influence of hostile environment and temperature without attraction of additional expenditures for manufacturing. But, in the course of cutting a tool is worn out quickly and cannot ensure high efficiency of machining. The purpose of researches consists in the technological process efficiency increase of composite material edge cutting machining. As a problem of researches is the development of the procedure for the assessment of expenditures presented depending on the peculiarities of the tool design, its capacity for work and cutting modes. For the solution of problems set there is offered a procedure for the assessment of expenditures presented which takes into account the expenses for a cutter, work material, electric power and other parameters characterizing the techniques taking into account the specificity of composite material machining. There is an expenditure binding to empirical values of the technological period of tool life and machining productivity depending on cutting modes. The procedure is realized for the optimization of the technological process of composite material milling. The recommendation for the definition of cutting modes ensuring low expenditures for manufacturing is developed.

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Liang, Gui Qiang, Jian Fu Zhang, Ping Fa Feng, Ding Wen Yu, and Zhi Jun Wu. "Experiment Research on Cutting Performance of High Volume Fraction SiC_p/Al Composites in Rotary Ultrasonic Machining." Applied Mechanics and Materials 184-185 (June 2012): 971–76. http://dx.doi.org/10.4028/www.scientific.net/amm.184-185.971.

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High volume fraction silicon carbide particulate reinforced aluminum matrix (SiCp/Al) composite are new class of difficult-to-machine materials due to their high strength. This paper presents an experimental investigation on the machinability of 60 vol% SiCp/Al composites by comparing the rotary ultrasonic milling method with the conventional machining method. The test scheme is designed, and the measurement method of the cutting force, surface roughness and morphology are illustrated. Based on the constructed experimental platform, the influences of machining parameters, such as cutting speed, feed rate and cut depth, on the cutting force and surface roughness are discussed. The experimental results show that ultrasonic machining is an effective method for machining high volume fraction SiCp/Al.

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Vereschaka, Alexey Anatolevich, Anatoly S. Vereshchaka, Oleg Sharipov, Jury Bublikov, and Nikolay Sitnikov. "Edge Cutting Tools for Machining of Hard-to-Cut Materials." Materials Science Forum 857 (May 2016): 213–20. http://dx.doi.org/10.4028/www.scientific.net/msf.857.213.

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The study considers the possibility to increase the efficiency of cutting of hard-to-cut materials through the use of innovative tool materials of layer composite type with nanoscale multi-layer composite coatings and carbides with cobalt-rhenium refractory binder. The effect of the increase in the tool life was achieved through higher wear resistance of cobalt-rhenium solid carbide to thermoplastic fracture and wear at elevated temperatures. For synthesis of coatings, the process of filtered cathodic vacuum-arc deposition (FCVAD) and the control technology on its basis were used for high-performance surface preparation and application of nanostructured coatings of multi-layer complex composite architecture on WC-Co, WC-(Co/Re) carbides. During the study, the mathematical models of the FCVAD processes are developed to optimize the numerical values of the basic parameters of the deposition technology, including operating gas pressure, value of cathode current, and voltage on substrate.

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Kumar, K. J. Santhosh, and Rajaneesh N. Marigoudar. "Comparative study of cutting force development during the machining of un-hybridized and hybridized ZA43 based metal matrix composites." Journal of the Mechanical Behavior of Materials 28, no. 1 (December 17, 2019): 146–52. http://dx.doi.org/10.1515/jmbm-2019-0016.

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AbstractIn the present study, turning of two grades of composites such as ZA43 silicon carbide and ZA43 silicon carbide and graphite was carried out. The fabrication of both categories of composites were done using stir casting technique. The silicon carbide of grit size 60μm with concentration of 5% was reinforced for one category of the composite and for the other grade of composite, 5% silicon carbide and graphite were added. Thus fabricated materials were turned on a conventional lathe using coated carbide tools (SNMG). Dry turning of the fabricated composite was carried out with varying cutting parameters. Measurement of cutting force was done for the both compositions of fabricated materials using lathe tool dynamometer. It was observed that, while machining composite containing silicon carbide and graphite, tool experience more cutting force than composite containing silicon carbide alone.

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Li, Gui Yu, Jian Feng Li, Jie Sun, Wei Dong Li, and Liang Yu Song. "A Finite Element Model to Simulate the Cutting of Carbon Fiber Reinforced Composite Materials." Advanced Materials Research 97-101 (March 2010): 1745–48. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.1745.

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In the present study, the finite element model of machining carbon fiber reinforced aluminum matrix composites with representative fiber orientation of 90 degree is established with the following developments: (i) a Johnson-Cook constitutive model of each component in the multi-phase composite materials; (ii) a failure model of the composite material based on physical separation criterion; (iii) the interface between fiber and matrix defined by a interaction. This simulating method can be developed to each kind of fiber reinforced composite materials.

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Зубарев, Юрий, Yuriy Zubarev, Александр Приемышев, and Alexsandr Priyomyshev. "Peculiarities of tool material wear at polymeric composite blank cutting." Science intensive technologies in mechanical engineering 2018, no. 7 (June 25, 2018): 27–31. http://dx.doi.org/10.30987/article_5b3135277d48c6.67970085.

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Tool materials used for polymeric composite blank machining, kinds of tool material wear arising at machining these blanks, and also the impact of technological parameters upon tool wear are considered. The obtained results allow estimating the potentialities of physical models at polymeric composite blanks cutting.

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Ramulu, M., M. Faridnia, J. L. Garbini, and J. E. Jorgensen. "Machining of Graphite/Epoxy Composite Materials With Polycrystalline Diamond (PCD) Tools." Journal of Engineering Materials and Technology 113, no. 4 (October 1, 1991): 430–36. http://dx.doi.org/10.1115/1.2904122.

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Machining of graphite/epoxy composite material is investigated by turning (cutoff) tests using different grades of polycrystalline diamond (PCD) inserts. The wear behavior of the PCD cutting edge is characterized by small cracks, rounded edges, and flank wear. The flank wear growth rate was found to depend on the microstructure of the tool and machining time. The coarser the PCD grade was, the better the wear resistance. The machined surface characteristics were evaluated by analyzing the surface roughness data and by scanning electron microscopy inspection of machined surface textures. Surface quality was found to get better with the cutting time.

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Shanmugam, D. K., F. L. Chen, E. Siores, and M. Brandt. "Comparative study of jetting machining technologies over laser machining technology for cutting composite materials." Composite Structures 57, no. 1-4 (July 2002): 289–96. http://dx.doi.org/10.1016/s0263-8223(02)00096-x.

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Wern, C. W., and M. Ramulu. "Influence of fibre on the cutting stress state in machining idealized glass fibre composite." Journal of Strain Analysis for Engineering Design 32, no. 1 (January 1, 1997): 19–27. http://dx.doi.org/10.1243/0309324971513184.

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The machining of an idealized glass fibre reinforced plastic (GFRP) was examined using photo-elasticity, dynamometry and optical microscopy. Cutting stresses at the glass roving and roving-matrix interface were evaluated using experimental and numerical methods. Experimentally observed isochromatics and measured forces in the orthogonal cutting of GFRP were shown to be affected by the reinforcement and its orientation. Machining stresses and machined surface damage were found to be highest when machining materials with roving oriented 45° towards the cutting edge.

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Dobbs, Robert, Patricia Bishop, and Antonio Minardi. "Laser Cutting of Fibrous Quartz Insulation Materials." Journal of Engineering Materials and Technology 116, no. 4 (October 1, 1994): 539–44. http://dx.doi.org/10.1115/1.2904325.

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An experimental investigation was conducted using a CO2 laser to cut fibrous insulation blankets for the Space Shuttle and high speed aircraft. This investigation was unique in identifying important factors for controlling the cut depth, thus, allowing the laser to be used for making partial cuts in a composite quilt. The investigation determined an algorithm for essential physical parameters used in automating the laser machining of these materials.

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Putyra, Piotr, Marcin Podsiadło, Lucyna Jaworska, Jolanta Laszkiewicz-Łukasik, Maciej Dyzia, Kazimierz Czechowski, and Tadeusz Krzywda. "Machining of Aluminums Alloys with the Addition of Reinforced Carbide Phase." Journal of Applied Materials Engineering 60, no. 1 (May 31, 2020): 11–20. http://dx.doi.org/10.35995/jame60010002.

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This paper presents the results of the processes of treating aluminum matrix casting materials with the addition of a ceramic phase. The matrix of the composite material was an Al-Si7 casting alloy with addition of 2 mass% Mg. The volume fraction of the reinforcing phase in the form of silicon carbide ranged from 5 to 15 vol.%. Preliminary machining tests were carried out at the Mori Seiki NL2000SY turning and milling center. The cutting properties were evaluated during longitudinal turning. Cutting tests were carried out using tools made of polycrystalline diamond, regular boron nitride, and cemented carbides. The nature of VBB wear was checked in accordance with PN-ISO 3685:1996. The influence of machining parameters (cutting speed, feed, cutting depth) on the value of cutting tools temperature was determined. An analysis of the chip shaping mechanism during machining was performed at various cutting parameters. The tests were carried out using the FLIR A655 thermal imaging camera and the fast Phantom MIRO M310 fast camera. Cast composite materials were also subjected to the processes of waterjet cutting, EDM cutting, and EDM drilling (EDM electro discharge machining).

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Lanna, M. A., A. M. Abrão, F. Levy Neto, Claudinei dos Santos, and Cosme Roberto Moreira Silva. "Evaluation of Silicon Nitride Ceramic Cutting Tools with Diamond Coatings." Materials Science Forum 591-593 (August 2008): 537–42. http://dx.doi.org/10.4028/www.scientific.net/msf.591-593.537.

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There is a substantial increase on carbon-carbon composites use for engineering applications, considering its high temperature properties and low specific mass. However the machining costs are relatively high, and new cutting tools, mainly ceramics, must be developed to overcome such difficulty, aiming cost reductions. In this work, silicon nitride based ceramics has been prepared , by pressureless sintering of silicon nitride powders and appropriate amounts of Al2O3,Ce2O3, Y2O3 and AlN. Cutting tools were prepared from the sintered materials, with geometry according to ISO1832. Selected cutting tools were also diamond coated by a hot filament-assisted Chemical Vapor Deposition (HFCVD) diamond coating process. Carbon Fiber Reinforced Carbon (CFRP) composites machining was performed, to evaluate the diamond coating influence on machining performance. After the tests, the uncoated tools presented severe flank wear and shorter life than the diamond coated ceramic tools. This flank wear is caused by the abrasive carbon powder generated during the facing operation. On CVD diamond coated α-SiAlON ceramic tools, no flank wear was observed, and the cutting edge remained unmodified, even for severe test conditions, such as high cutting length and speed. Carbon particles, originated from the machined composite, do not promotes diamond film rupture, but instead, acts as lubricant film and reduces composite surface initial roughness.

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Cepero-Mejias, Fernando, Nicolas Duboust, Vaibhav A. Phadnis, Kevin Kerrigan, and Jose L. Curiel-Sosa. "A Novel Finite Element Method Approach in the Modelling of Edge Trimming of CFRP Laminates." Applied Sciences 11, no. 11 (May 21, 2021): 4743. http://dx.doi.org/10.3390/app11114743.

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Nowadays, the development of robust finite element models is vital to research cost-effectively the optimal cutting parameters of a composite machining process. However, various factors, such as the high computational cost or the complicated nature of the interaction between the workpiece and the cutting tool significantly hinder the modelling of these types of processes. For these reasons, the numerical study of common machining operations, especially in composite machining, is still minimal. This paper presents a novel approach comprising a mixed multidirectional composite damage mode with composite edge trimming operation. An ingenious finite element framework which infer the cutting edge tool wear assessing the incremental change of the machining forces is developed. This information is essential to replace tool inserts before the tool wear could cause severe damage in the machined parts. Two unidirectional carbon fibre specimens with fibre orientations of 45° and 90° manufactured by pre-preg layup and cured in an autoclave were tested. Excellent machining force predictions were obtained with errors below 10% from the experimental trials. A consistent 2D FE composite damage model previously performed in composite machining was implemented to mimic the material failure during the machining process. The simulation of the spring back effect was shown to notably increase the accuracy of the numerical predictions in comparison to similar investigations. Global cutting forces simulated were analysed together with the cutting tool tooth forces to extract interesting conclusions regarding the forces received by the spindle axis and the cutting tool tooth, respectively. In general terms, vertical and normal forces steadily increase with tool wear, while tangential to the cutting tool, tooth and horizontal machining forces do not undergo a notable variation.

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Ismail, Sikiru Oluwarotimi, Hom Nath Dhakal, Eric Dimla, and Ivan Popov. "Recent advances in twist drill design for composite machining: A critical review." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 231, no. 14 (March 25, 2016): 2527–42. http://dx.doi.org/10.1177/0954405416635034.

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In the field of composite technology, inefficient and poor designs of twist drills contribute immensely to the challenges facing drilling of composite materials. An attempt to report some of the drill design methods and their inherent challenges confronting composite machining necessitates the writing of this article. A critical review has been conducted to offer a clear understanding of the current advances in the field of mechanical drilling of composite materials, focusing on geometry, material and parametric tool designs. The inter-dependable effects of thrust force, cutting speed, feed rate, cutting force and torque on drill design are similarly reviewed. This article also reveals other associated issues facing composite drilling including delamination, surface roughness, rapid tool wear and drill breakage. Well-designed drill geometry and good knowledge of drilling parameters afford the producers of polycrystalline diamond, carbide and high-speed steel tooling materials better opportunity of developing a drill that will minimise delamination of the reinforced composites and tool wear and produce a high-quality surface. Twist drill manufacturers and users will benefit from this article as they seek to have well-designed and improved drills.

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Liu, H. T. (Peter). "Advanced Waterjet Technology for Machining Curved and Layered Structures." Curved and Layered Structures 6, no. 1 (March 1, 2019): 41–56. http://dx.doi.org/10.1515/cls-2019-0004.

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Abstract Considerable advancements in waterjet technology take advantage of its inherent merits as a versatile machine tool have been achieved in recent years. Such advancements include, but are not limited to, process automation, machining precision, multimode machining of most materials from macro to micro scales, and cost effectiveness with fast turnaround. In particular, waterjet as a cold cutting tool does not introduce heat-affected zones (HAZ) and preserves the integrity of parent materials. As such, for heat-sensitive materials, its cutting speed is over ten times faster than those of thermal-based tools, such as solid-state lasers, electric discharge machining (EDM), and plasmas cutting. Although waterjet is basically a 2D machined tool, novel multi-axis accessories were developed to enable 3D machining and for machining on workpieces with 3D geometry. For composites, waterjet unlike mechanical routers is capable of minimizing or mitigating tearing and fraying. CNC hard tools that are in direct contact with highly abrasive composite matrix often experience rapid wearing while the heat generated by machining processes induces thermal damage to the composite. This is a nonissue for waterjet as it is a noncontact tool. The only issue for machining composites with waterjet was the damage caused by large stagnating pressure developed inside blind holes during the initial piercing operation (before breakthrough). Considerable effort was made to understand and resolve the waterjet piercing damage issue. For extremely precise parts, waterjet can serve advantageously as a near-net shaping tool; the parts can then be finished by light trimming with proper precision tools. Since the bulk of the material is removed by waterjet, the operating lives of the precision tools can be greatly extended. This paper presents a collection of waterjet-machined samples to demonstrate many benefits by applying waterjet for multimode machining of curved and layered structures.

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Prakash, R., and V. Krishnaraj. "Experimental Study on Edge Trimming of Unidirectional CFRP Composites." Advanced Materials Research 984-985 (July 2014): 207–13. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.207.

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Composites find lot of applications in aerospace, defence, automotive and medical industries due to its high strength to stiffness and weight ratio. After the composites are demoulded, trimming the edges is the first machining operation to be carried out. The heterogeneity and anisotropy of the composite materials make machining difficult and accompanied with different damages. The accuracy of the surface profile is one of the important components of both dimensional and geometric accuracy and play a significant role in achieving overall product quality because it is often directly related to the product’s functional performance. The defects in the free edges are mainly influenced by the machining parameters (such as speed, feed, depth of cut and fibre orientation) and the type of machining (orthogonal cutting and oblique cutting). This paper presents some observations like feed force, normal force and surface roughness made on the orthogonal and oblique cutting of unidirectional carbon fiber reinforced plastics.

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Chevychelov, S. A., M. V. Snopkov, I. V. Bondartsev, and A. V. Maslennikov. "DIAGRAM OF FIXTURE FOR VIBRATION DRILLING OF HOLES IN COMPOSITE MATERIALS." Proceedings of the Southwest State University 21, no. 6 (December 28, 2017): 76–84. http://dx.doi.org/10.21869/2223-1560-2017-21-6-76-84.

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This paper discusses the use of vibration drilling method for hole making in composite materials. The special feature of advanced composite materials is the difficulty of machining by conventional methods. The occurrence of defects such as matrix cracking, delamination and fibers failure, thermal degradation of matrix obtained in the process of making holes requires the development of new technological solutions and special equipment and tooling. As an alternative, along with cutting and abrasive machining methods for composite materials, we can consider vibration drilling, laser, ultrasonic and abrasive blasting machining of holes. The Department of Engineering Technologies and Equipment of Southwest State University has made a device intended for vibration drilling of holes in composite materials. Using the proposed method allows us to reduce the vibrations along the drill axis, both in the low-frequency and high-frequency range (20 to 500 Hz). It also allows us to change the frequency of vibration without stopping the cutting process. The device is designed for metall cutting machines related to drilling-and-boring group of machines with a vertical spindle to increase performance and improve the quality of holes shaping. Technical specifications of the designed device provide the set tool advances, the required frequency of spindle rotation, giving the necessary cutting speed (they depend on technical features of the selected machine), as well as the necessary amplitude and high frequency axial oscillations of the tool. To convert electric oscillations into mechanical ones there has been adopted the scheme of two inductance coils, being placed one above the other. The proposed method of electro-impulse drilling will solve the problem of processing composite materials (matrix cracking, delamination and fiber failures) and improve the quality and productivity of making holes in composite materials.

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Rychkov, D. A., and A. S. Yanyushkin. "The Methodology of Calculation of Cutting Forces When Machining Composite Materials." IOP Conference Series: Materials Science and Engineering 142 (August 2016): 012088. http://dx.doi.org/10.1088/1757-899x/142/1/012088.

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Bañon, Fermin, Alejandro Sambruno, Leandro González-Rovira, Juan Manuel Vazquez-Martinez, and Jorge Salguero. "A Review on the Abrasive Water-Jet Machining of Metal–Carbon Fiber Hybrid Materials." Metals 11, no. 1 (January 17, 2021): 164. http://dx.doi.org/10.3390/met11010164.

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The bonding of metallic alloys and composite materials in the form of a hybrid structure is a line of great interest for the current industry. The different machinability of both materials requires a specific machining process. Abrasive water-jet machining (AWJM) is an excellent technology for the simultaneous machining of both materials. However, defects at the micro and macro-geometric level have been detected in several scientific articles. In this review, a detailed study of the two main defects in metals, composite materials and hybrid structures has been developed. The conclusions of several scientific articles have been exposed for a better understanding of the topic in articles between 1984 and 2020. The influence of the cutting parameters on the reduction in kinetic energy of the water jet and the order of stacking of the materials in the hybrid structure is the main objective in order to minimize these defects. Cutting parameter optimization studies, predictive model proposals, process-associated defects and evaluation methodologies have been discussed. The aim of this article is to set a solid background on AWJM machining in hybrid structures and on the influence of cutting parameters on generated defects and machining strategies to obtain the best results at a macro and micro-geometric level.

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Doluk, Elżbieta, Anna Rudawska, Józef Kuczmaszewski, and Paweł Pieśko. "Influence of Cutting Parameters on the Surface Quality of Two-Layer Sandwich Structures." Materials 13, no. 7 (April 3, 2020): 1664. http://dx.doi.org/10.3390/ma13071664.

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Hybrid sandwich structures are more and more widely used in many industries. This is mainly due to their good properties. One of the limitations regarding the use of sandwich structures is their difficult processing. Therefore, it seems reasonable to determine the influence of cutting parameters and machining configuration on the characteristic defect (phase) formed at the boundary of the materials forming a hybrid sandwich structure. This study investigates the effects of layer orientations during milling and machining parameters such as the cutting speed Vc, the feed fz and the cutting width ae. The study is conducted on a two-layer sandwich structure composed of two materials: 2024 aluminum alloy and epoxy-carbon composite with 60% of high-strength carbon fibers. A statistical analysis is performed using the Statistica program. The results show that the change in the cutting parameters has a greater impact on the formation of a defect on the surface of samples when the machining process starts on the side of the composite rather than the metal. The highest defect value is obtained for the milling from the composite layer when the process is performed with the following cutting parameters: Vc = 300 m/min, fz = 0.08 mm/tooth, ae = 5 mm.

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Delahaigue, J., J.-F. Chatelain, and G. Lebrun. "Machining analysis of unidirectional and bi-directional flax-epoxy composite laminates." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 231, no. 1-2 (January 4, 2017): 196–209. http://dx.doi.org/10.1177/1464420716671970.

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Natural fibers, and more particularly, flax fibers, have a considerable potential as replacements for synthetic fibers. These fibers are of significant economic and environmental interest because they are natural products, are biodegradable, and unlike synthetic fibers, are entirely recyclable. They are also less expensive than synthetic fibers, less abrasive for machining, and their specific properties (strength-to-weight ratio) are comparable to those of glass fibers. Consequently, they thus provide economic and environmental benefits for companies. Unfortunately, machining knowledge with respect to this kind of material is low, and research in this domain has barely begun. The objective of this study is to describe the machinability of unidirectional and bidirectional flax/epoxy composites and to analyze the influence of cutting parameters and fiber orientation on cutting forces and surface finish. Milling tests were performed on unidirectional composite laminates with two different tools. The results show that the surface finish and cutting forces depend largely on the feed rate, and to a lesser extent, on the cutting speed. The PCD cutting tool, with a zero helix angle, showed the best performances as compared to the CVD cutting tool, which had a different geometry. The former provided a better surface finish, a lower delamination factor, and lower cutting forces. The material was found to be easy to machine and low abrasive, since no tool wear was observed following the cutting tests. Finally, it was found that an intermediate feed rate value and a high cutting speed were the best of all parameters tested for achieving a low cutting force level, low surface roughness, and high throughput.

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Anand, K., M. V. Siddharth, K. S. Vijay Sekar, and S. Suresh Kumar. "Impact of Tool Inserts in High Speed Machining of GFRP Composite Material." Applied Mechanics and Materials 787 (August 2015): 664–68. http://dx.doi.org/10.4028/www.scientific.net/amm.787.664.

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Composite materials are in-homogenous, anisotropic and cause high tool wear at high cutting speeds in machining. Industrial practices worldwide reveal a need to use high speed machining to achieve the desired material removal rate, surface finish and to reduce cost cutting. In this research work, impact of turning glass fibre reinforced polymer tube with two contrasting turning tool inserts such as titanium aluminium nitride and tungsten carbide have been analysed. The turning was conducted at low to high cutting conditions up to spindle speeds of 2000 rpm and feed rate of 0.446mm/rev. The cutting force, feed force were acquired with a strain gauge based dynamometer, the chip cross section was observed using scanning electron microscopy and the temperature was sensed with a infra red thermo sensor. The advanced titanium aluminium nitride insert shows better machining characteristics across cutting speeds.

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Liu, Jie, and Y. Kevin Chou. "Cutting Tool Temperature Analysis in Heat-Pipe Assisted Composite Machining." Journal of Manufacturing Science and Engineering 129, no. 5 (April 8, 2007): 902–10. http://dx.doi.org/10.1115/1.2752528.

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Machining of advanced materials, such as composite, encounters high cutting temperatures and rapid tool wear because of the abrasive nature of the reinforcement phases in the workpiece materials. Ultrahard coatings, such as chemical vapor deposition diamond, have been used for machining such advanced materials. Wear of diamond-coated tools is characterized by catastrophic coating failure, plausibly due to the high stress developed at the coating-substrate interface at high temperatures because of very different elastic moduli and thermal expansion coefficients. Temperature reductions, therefore, may delay the onset of the coating failure and offer tool life extension. In this study, a passive heat-dissipation device, the heat pipe, has been incorporated in composite machining. Though it is intuitive that heat transfer enhanced by the heat pipe may reduce tool temperatures, the heat pipe will likely increase heat partitioning into the tool at the rake face, and complicate the temperature reduction effectiveness. A combined experimental, analytical, and numerical approach was used to investigate the heat-pipe effects on cutting tool temperatures. A machining experiment was conducted and the heat-source characteristics were analyzed using cutting mechanics. With the heat sources as input, cutting tool temperatures in machining, without or with a heat pipe, were analyzed using finite element simulations. The simulations encompass a 3-D model of a cutting tool system and a 2-D chip model. The heat flux over the rake-face contact area was used in both models with an unknown heat partition coefficient, determined by matching the average temperature at the tool-chip contact from the two models. Cutting tool temperatures were also measured in machining using thermocouples. The simulation results agree reasonably with the experiment. The model was used to evaluate how the heat pipe modifies the heat transport in a cutting tool system. Applying heat-pipe cooling inevitably increases the heat flux into the tool because of the enhanced heat dissipation. However, the heat pipe is still able to reduce the tool-chip contact temperatures, though not dramatically at current settings. The parametric study using the finite element analysis (FEA) models shows that the cooling efficiency decreases as the cutting speed and feed increase, because of the increased heat flux and heat-source area. In addition, increasing the heat-pipe volume and decreasing the heat-pipe distance to the heat source enhances the heat-pipe cooling effectiveness.

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G, Ramanan, Rajesh Prabha.N, Diju Samuel.G, Jai Aultrin. K. S, and M. Ramachandran. "Prediction of Machining Characteristics of Hybrid Composites Using Response Surface Methodology Approach." International Journal of Engineering & Technology 7, no. 3.1 (August 4, 2018): 162. http://dx.doi.org/10.14419/ijet.v7i3.1.17078.

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This manuscript presents the influencing parameters of CNC turning conditions to get high removal rate and minimal response of surface roughness in turning of AA7075-TiC-MoS2 composite by response surface method. These composites are particularly suited for applications that require higher strength, dimensional stability and enhanced structural rigidity. Composite materials are engineered materials made from at least two or more constituent materials having different physical or chemical properties. In this work seventeen turning experiments were conducted using response surface methodology. The machining parameters cutting speed, feed rate, and depth of cut are varied with respect to different machining conditions for each run. The optimal parameters were predicted by RSM technique. Turning process is studied by response surface methodology design of experiment. The optimal parameters were predicted by RSM technique. The most influencing process parameter predicted from RSM techniques in cutting speed and depth of cut.

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Shi, Run Ping, Cheng Yong Wang, and Xi Wang. "Preliminary Study on Carbon Fibre Composites Cutting Technology and Cutting Tools." Materials Science Forum 723 (June 2012): 25–29. http://dx.doi.org/10.4028/www.scientific.net/msf.723.25.

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Carbon fiber reinforced plastics (CFRP)/Ti super hybrid laminates are newly developed structural materials with excellent properties. But they are restricted in aircraft manufacturing because of their poor machining quality and short tool life. The machining quality and tool life are determined by machining ways, tool materials, drill point forms and drilling sequence. Spiral milling, drilling from Ti side, using the PCD tools and carbide drills with special point angle can improve the quality of hole and prolong tool life.

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Vereschaka, Alexey Anatolevich, Boris Y. Mokritskii, Dmitriy A. Pustovalov, Anatoliy Stepanovich Vereschaka, Jury I. Bublikov, and D. N. Litkin. "Application of High-Strength Gradient Cutting Ceramics with a Multifunctional Coating for Heavy Machining of Hard-to-Cut Materials." Applied Mechanics and Materials 798 (October 2015): 344–50. http://dx.doi.org/10.4028/www.scientific.net/amm.798.344.

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The study deals with the challenge concerning the use of tools made of ceramics with nanostructured multilayer composite multi-component coatings produced through filtered cathodic vacuum-arc deposition for operation of severe machining of materials, including interrupted machining. The study shows the possibility for creating ceramic tools of new generation from high-strength gradient cutting ceramics (HGC-ceramics) of three-layer structure comprising a substrate based on carbide WC-TiC-Co and ceramic top layer based on Al2O3and Si3N4doped AlN and nanostructured multilayer composite multi-component coating of Ti-TiCrN-TiCrAlSiN type. The study presents the results of research on the optimization of composition of two-layer substrate and manufacture of high-strength gradient cutting ceramics (HGC-ceramics) with nanostructured multilayer composite multi-component coatings, as well as the results of laboratory and production certification tests of cutting properties of tools equipped with cutting inserts of two-layer HGC-ceramics with developed coating.

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Cen, Hai Tang, Lu Xing Chi, and Hui Li. "An Experimental Study on Composites Machining Using Abrasive Water Jet Technology." Key Engineering Materials 407-408 (February 2009): 582–85. http://dx.doi.org/10.4028/www.scientific.net/kem.407-408.582.

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Composite when machined with conventional technique often results in fibre damage, interlaminate failure, poor hole quality and high tool wear rate. The flexibility and cool cutting characteristics of the AWJ make it an important tool for cutting applications of new materials such as composites. It has been shown that using AWJ cutting with optimal parameters for Bakelite, interlayer GFRP and normal GFRP can be a viable and effective alternative with good kerf quality and few problems such as thermal effects, delamination and burr. The empirical models of the levert of GFRP has revealed that AWJ technology has a great of advantages on machining complicate shaped and interstitium workpieces

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Babu, T. S. Mahesh, P. S. Ramkumar, and Nambi Muthukrishnan. "Optimization of Machining Parameters on Turning of Hybrid Metal Matrix Composite." Applied Mechanics and Materials 315 (April 2013): 113–16. http://dx.doi.org/10.4028/www.scientific.net/amm.315.113.

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Hybrid metal matrix composite constitutes a tough metal matrix with reinforcement of at least two ceramic particulates and exhibit superior mechanical and thermal properties. The difficulties in machining metal matrix composites are obtaining good surface finish, consumption of more electrical power, involving excessive cutting forces and greater tool wear as it contain very hard ceramic particulates. This factor restrict the wide spread application of these kind of materials. Hence the study of machining characteristics and the optimization of the cutting parameters are prime importance. In this paper aluminium alloy is taken as metal matrix and the silicon carbide (SiC 10% by wt.) and boron carbide (B4C 5% by wt.) taken as ceramic reinforcement. This material is fabricated in the form of cylindrical rod using stir casting method. Turning operations are carried out in medium duty lathe using poly crystalline diamond (PCD) cutting tool insert. Taguchis design of L09orthogonal array is followed selecting three machining factors namely cutting speed, feed and depth of cut at three levels. Optimal cutting conditions are arrived by Signal-Noise ratio method with respect to surface roughness. The results are validated by (ANOVA) analysis of variance and the percentage of contribution of cutting speed, feed rate and depth of cut for better surface finish are determined and it is found that the vital parameter is feed followed by cutting speed and then by depth of cut.

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Prakash, M., and PVS Dileep Aditya Dhar. "Investigation on the effect of drilling parameters on the tool wear and delamination of glass fibre-reinforced polymer composite using vibration signal analysis." Journal of Composite Materials 52, no. 12 (August 29, 2017): 1641–48. http://dx.doi.org/10.1177/0021998317728109.

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Glass fibre-reinforced polymer composite materials are widely used in industrial, aerospace and automotive sector. It has excellent properties such as high strength to weight ratio, higher fatigue limit, high stiffness to weight ratio, corrosion resistance and design flexibility. The strength of the composite highly depends upon orientation of the fibre material. Drilling is one of the major machining operations that are carried out on Glass fibre-reinforced polymer composite materials to the need for components assembly. There are many problems encountered while drilling glass fibre-reinforced polymer composites. The major problems are excessive tool wear and delamination of the composite during drilling, which reduce the strength of the composite during application. In the present study, the experimental investigations are carried out to analyse the effect of various machining parameters, i.e. cutting speed and feed rate on the tool wear and delamination. The time and frequency domain analysis of vibration signals measured using sound sensor is also used to predict the effect of machining parameters on delamination as well as to develop the tool replacement strategy.

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Kubher, Sagar, Suhasini Gururaja, and Redouane Zitoune. "In-situ cutting temperature and machining force measurements during conventional drilling of carbon fiber polymer composite laminates." Journal of Composite Materials 55, no. 20 (March 3, 2021): 2807–22. http://dx.doi.org/10.1177/0021998321998070.

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The evolution of in-situ cutting temperature and machining forces during conventional drilling of multi-directional carbon fiber reinforced polymer (MD-CFRP) laminates using a novel inverted drilling setup is presented. The in-situ cutting temperature was measured using fiber Bragg grating (FBG) optical sensor embedded in the stationary drill. The effect of machining parameters such as spindle speed and feed rate on the temperatures and machining forces were studied that indicate the predominant effect of spindle speed on machining temperatures. The drilled MD-CFRP samples and drill bits were characterized by scanning electron microscopy (SEM) and micro-computed tomography ([Formula: see text]) techniques to assess machining-induced damage in the samples and tool wear in the drill bits. Exit-ply delamination was observed in MD-CFRP samples that aggravates with increase in cutting temperature and thrust force caused by evolving tool wear. The measured in-situ machining temperatures using the current experimental setup can be used to achieve better machining models.

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Abdelnasser, Elshaimaa, Azza Barakat, Samar Elsanabary, Ahmed Nassef, and Ahmed Elkaseer. "Precision Hard Turning of Ti6Al4V Using Polycrystalline Diamond Inserts: Surface Quality, Cutting Temperature and Productivity in Conventional and High-Speed Machining." Materials 13, no. 24 (December 12, 2020): 5677. http://dx.doi.org/10.3390/ma13245677.

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This article presents the results of an experimental investigation into the machinability of Ti6Al4V alloy during hard turning, including both conventional and high-speed machining, using polycrystalline diamond (PCD) inserts. A central composite design of experiment procedure was followed to examine the effects of variable process parameters; feed rate, cutting speed and depth of cut (each at five levels) and their interaction effects on surface roughness and cutting temperature as process responses. The results revealed that cutting temperature increased with increasing cutting speed and decreasing feed rate in both conventional and high-speed machining. It was found that high-speed machining showed an average increase in cutting temperature of 65% compared with conventional machining. Nevertheless, high-speed machining showed better performance in terms of lower surface roughness despite using higher feed rates compared to conventional machining. High-speed machining of Ti6Al4V showed an improvement in surface roughness of 11% compared with conventional machining, with a 207% increase in metal removal rate (MRR) which offered the opportunity to increase productivity. Finally, an inverse relationship was verified between generated cutting temperature and surface roughness. This was attributed mainly to the high cutting temperature generated, softening, and decreasing strength of the material in the vicinity of the cutting zone which in turn enabled smoother machining and reduced surface roughness.

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Зубарев, Юрий, Yuriy Zubarev, Александр Приемышев, and Alexsandr Priyomyshev. "Polymeric composite processing with blade tool." Science intensive technologies in mechanical engineering 2019, no. 3 (March 15, 2019): 27–31. http://dx.doi.org/10.30987/article_5c7434f17ef7f9.84873144.

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Investigation results on the impact of processing time and a cutting way upon wear a cutter made of different tool materials at the machining of polymeric composite blanks are shown. There are given recommendations on cutter plate geometry of a tool and the most efficient tool materials.

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Zhang, Jing Ying, Qi Xun Yu, Si Qin Pang, Shu Suo Meng, Tian Shun Wang, and Jin Tao Hu. "Development & Application of Polycrystal Cubic Boron Nitride Cutting Tool Material." Key Engineering Materials 375-376 (March 2008): 168–71. http://dx.doi.org/10.4028/www.scientific.net/kem.375-376.168.

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This article illustrates the production method and mechanical & physical properties of polycrystal cubic boron nitride (PCBN) cutting tool material. As shown by the turning machining of hardened steel, cold-hardened cast iron and composite materials, PCBN cutting tool is superior in cutting performance to cemented carbide and ceramics cutting tools. In recent years, with great improvement in production process and overall mechanical properties of PCBN cutting tool material, it can effectively make rough machining of ferrous metal. This article contributes to the popularization and application of this cutting tool.

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Journal articles on the topic 'Composite materials. Machining. Cutting'

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