Academic literature on the topic 'L16 Orthogonal Array'

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Journal articles on the topic "L16 Orthogonal Array"

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Tabaraki, Reza, and Mina Khodabakhshi. "Multidye Biosorption: Wavelet Neural Network Modeling and Taguchi L16 Orthogonal Array Design." CLEAN - Soil, Air, Water 45, no. 5 (2017): 1500499. http://dx.doi.org/10.1002/clen.201500499.

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Sayın, Bilge, Zerrin Polat, and Güzin Kaban. "Enhanced Lipid Yield from Olive-Mill Wastewater by Yarrowia lipolytica NRRL YB-423." Journal of Agricultural Production 6, no. 1 (2025): 32–40. https://doi.org/10.56430/japro.1574738.

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Lipid production from olive-mill wastewater (OMW) by Yarrowia lipolytica NRRL YB-423 was optimized (biomass concentration and lipid yield based on dry cell weight) using multi-response criteria based on the Taguchi orthogonal array. Sixteen experimental runs were performed using the L16 orthogonal array. Dilution rates of OMW (15, 30, 45, and 60%), Tween 80 (0, 0.2, 0.4, and 0.6%), sodium chloride (NaCl; 0, 1, 2, and 3%), and sterility were selected as factors. The significance of the parameters was determined using analysis of variance (ANOVA). The effects of all factors on the lipid yield were statistically significant (p<0.05). The results showed that sterility had a maximum contribution of 48.12% to lipid yield. The highest lipid yield (40.88 %) was achieved in sterile medium supplemented with 15% diluted OMW, 0.6% Tween 80, and 3% NaCl.
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Teng, Li Wei, Ran Huang, Si Yu Zou, and Hui Mi Hsu. "Protection Effectiveness of Concrete Surface Treating Materials." Advanced Materials Research 834-836 (October 2013): 749–54. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.749.

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This study was aimed to evaluate the protection effectiveness of various concrete surface treating materials. Four types of surface treating materials and six parameters were selected. Compressive strength test, absorption test and permeability test were performed. Taguchi method was adopted to identify the key factors influencing the protection effectiveness provided by the surface treatment. L16(81Î26) orthogonal array was chosen to reduce the number of experiments. The major sequentially influential factors are type of coating material, w/c ratio of concrete substrate and coating thickness.
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Bashir M. Aburawi and Meor Othman Hamzah. "Investigating the Effect of Experimental Factors on the Performance of Warm Mix Asphalt with Wax Additive using Application of the Taguchi Method." Journal of Pure & Applied Sciences 22, no. 3 (2023): 54–59. http://dx.doi.org/10.51984/jopas.v22i3.2735.

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The objective of this study was to assess the impact of experimental factors on the volumetric properties and performance of warm mix asphalt (WMA) with RH-WMA using the Taguchi method. The gradations of the mixtures were based on AC 14, as specified by the Public Works Department of Malaysia. An L16 orthogonal array was employed to design the mixtures, considering three factors: compaction temperatures ranging from 95 to 140°C, RH-WMA contents ranging from 1% to 4%, and asphalt contents ranging from 3.5% to 6.5%. Sixteen mixtures were prepared according to the L16 array. The study focused on investigating several volumetric properties, including bulk-specific gravity, air voids, voids filled with asphalt, and voids in mineral aggregates. Additionally, the strength behavior of the samples was analyzed using the Taguchi method. The resilient modulus and performance of the mixtures were also evaluated. The results of the study indicate that a high RH-WMA content led to a slight decrease in the strength of the asphalt mixture and air voids. However, it increased the voids filled with asphalt (VFA) and resulted in softening of the asphalt mixtures.
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Wang, Jiantao, and Qing Sun. "Performance Evaluation of Q690 High-Strength Concrete-Filled Thin-Walled Steel Tubular Columns under Compression-Bending Coupling." Mathematical Problems in Engineering 2018 (July 2, 2018): 1–12. http://dx.doi.org/10.1155/2018/8386741.

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The high-strength concrete-filled thin-walled steel tubular (HCFTST) columns, as a relatively new type structure member, could reduce the section size to obtain the favorable architecture aesthetic effects and gain further economic benefits. In this paper, the HCFTST columns were optimized on the basis of the orthogonal array of L16 (45) with three tested parameters. The orthogonal range analysis (ORA) was utilized to research the alteration degree, and the orthogonal variance analysis (OVA) was employed to analyze the significant degree between different parameters. Moreover, the optimized combinations based on performance index including strength, ductility, and energy dissipation were recommended to offer certain reference for structural design and application. Finally, a modified damage assessment model was proposed and verified. It indicates that the HCFTST columns with reasonable design could display favorable performance and can be expected to have a widespread application in engineering structures.
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Gulati, Naresh, Dr M. P. Verma, Dr Raghvendra Singh, and Ashish Kant Ahirwar. "“Optimize the Mixed Proportions of Geopolymer Concrete to achieve Desired Strength by using RSM Method”." International Journal for Research in Applied Science and Engineering Technology 11, no. 8 (2023): 1745–49. http://dx.doi.org/10.22214/ijraset.2023.55447.

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Abstract: GGBFS-FA-based GPC offers a clean and sustainable development technology alternative. In this study, the RSM method was used to optimize the mixed proportions of geopolymer concrete to achieve desired strength criteria. Four factors and four levels were considered: binder content, including four combinations of FA and GGFBS dosage, dosage of super plasticizer (0.5, 1.0, 1.5 and 2%), Na2SiO3/NaOH ratio (1.5, 2.0, 2.5 and 3), and molarity (6, 8, 10 and 12). Using these ingredients and factors, the effect of compressive strength was examined. The RSM approach using an L16 orthogonal array was employed to find the optimum condition of every factor while limiting the number of experiments
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Durairaj, M., A. K. S. Ansari, and M. H. Gauthamkumar. "Parametric optimization of wire cut electrical discharge machining." International Journal of Engineering & Technology 3, no. 2 (2014): 212. http://dx.doi.org/10.14419/ijet.v3i2.1807.

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Wire Electrical Discharge Machining is a manufacturing process whereby a desired shape is obtained using electrical discharges (or) by repetitive spark cycle. Precision and intricate machining are the strengths. Machining parameters tables provided by the machine tool manufacturers often do not meet the operator requirements. Selection of optimum machining and machining parameters combinations is needed for obtaining higher cutting efficiency and accuracy. In this present study, machining is done using Wire-Cut EDM and optimization of surface roughness is done using Taguchis design of experiments. Experimentation was planned as per Taguchis L16 orthogonal array. Each experiment has been performed under different cutting conditions of gap voltage, pulse ON time, and pulse OFF time and Wire feed. Dielectric fluid pressure, wire speed, wire tension, resistance and cutting length are taken as fixed parameters. Inconel 800 was selected as a work material to conduct the experiments. From experimental results, the surface roughness was determined for each machining performance criteria. Signal to noise ratio was applied to measure the performance characteristics deviating from the actual value. Finally, experimental confirmation was carried out to identify the effectiveness of this proposed method. Keywords: Optimization; Taguchis L-16 Orthogonal Array; Surface Roughness; S/N Ratio.
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Guo, Xiao Ya, Li Xin Wang, Shou Guang Li, Bo Zhou, and Jin Yu Hao. "Preparation of Acetic Acid by Hydrothermal Catalytic Oxidation Degradation of Cellulose Simulants." Advanced Materials Research 726-731 (August 2013): 539–42. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.539.

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A hydrothermal catalytic oxidation degradation process was investigated to improve acetic acid production from cellulose simulants. Filter paper, being a cellulose simulant as the test material, was oxidized in a batch reactor with catalysts. An L16 (45) orthogonal array design (OAD) with five factors at four levels was employed. Of the five, reaction temperature was the most influential for the yield of acetic acid. Afterwards, a series of process optimization experiments were conducted. And a higher yield of acetic acid (28.53%) was obtained under the following conditions: temperature was 320°C; reaction time was 26 min; water consumption was 8 ml; oxidant and catalyst supplied were 0.8% and 0.2% of the raw material respectively.
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Chen, Dyi-Cheng, and Yu-Ting Chen. "Optimization Parameters for PLA Through Additive Manufacturing: Taking Mixed Shapes as an Example." Applied Sciences 14, no. 21 (2024): 10035. http://dx.doi.org/10.3390/app142110035.

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In recent years, additive manufacturing has been widely used in industrial, medical, and educational fields. Material extrusion is used in most industries to increase development efficiency and reduce costs. This study used the material extrusion to discuss the print quality of additive manufacturing and optimized the processing parameters based on material properties. Based on the literature, this study summarized the fishbone diagram influencing printing quality. The layer height, nozzle temperature, printing speed, infill pattern, and filling spacing were selected as the control factors of the Taguchi method. An orthogonal array L16 was used for parameter design. The optimal parameters were analyzed using the variance and the response surface method. The results of the study are as follows.
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Sreeraj, P., T. Kannan, and Maji Subhasis. "Analysis of flux cored arc welding process parameters by hybrid taguchi approach." World Journal of Engineering 11, no. 6 (2014): 575–88. http://dx.doi.org/10.1260/1708-5284.11.6.575.

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This paper presents calculation of the welding process parameters for obtaining optimal weld bead geometry in Flux Cored arc welding (FCAW) process. Bead on plate welding was carried as per L16 orthogonal array. In this paper weld bead geometry such as penetration, bead width, reinforcement and percentage of dilution of IS 2062 structural steel plates investigated. Two hybrid techniques firstly Taguchi method coupled with Grey relational analysis and secondly Taguchi method in combination with desirability function (DF) approach has been applied in this paper. Comparison made between two hybrid optimization techniques are made to analyze to choose the best method. Optimal results have been confirmed by confirmatory experiment which showed satisfactory results.
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Dissertations / Theses on the topic "L16 Orthogonal Array"

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Pan, Jyh-Sung, and 潘志松. "Investigating the alpha risk of the-larger-the-better type quality characteristic by L12 orthogonal array." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/55996753985881650537.

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碩士<br>逢甲大學<br>工業工程與系統管理學研究所<br>93<br>In Taguchi’s parameter design, the optimal parameter levels are found by maximizing the signal-to-noise ratio of the quality characteristic. In this research, it is assumed that (1) the quality characteristic is normally distributed (2) the mean and standard deviations of all treatment combinations are equal. Thus, the alpha risk is that some factors are misidentified as significant factors. The purpose of this research is to investigate the alpha risk of Taguchi method for L12 by simulation. The results show that the alpha risk is very high for this orthogonal array.
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Chen, Hong-Wu, and 陳鴻武. "Investigating the alpha risk of the-larger-the better type quality characteristic by L18 orthogonal array." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/69018990083280365343.

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碩士<br>逢甲大學<br>工業工程學所<br>92<br>One of the basic assumptions of Taguchi’s parameter design is that the error variances are not equal for all treatment conditions. Thus, the optimal level combination of parameter is determined by maximizing signal-to-noise ratio for the quality characteristics. On the contrary, one of the basic assumptions of experimental design is that error variance are equal for all treatment conditions. Thus, the factor level combinations whose quality characteristics is significant different from the other factors is found by using ANOVA. If the assumption of the later is true, then there is an alpha risk that Taguchi method may fail to select the optimal level combinations. The purpose of this paper is to investigate the alpha risk of Taguchi method for the-larger-the-better (LTB) type problem using L18 by simulation.
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Book chapters on the topic "L16 Orthogonal Array"

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Sharma, Neeraj, and Kamal Kumar. "Fabrication of Porous NiTi Alloy Using Organic Binders." In Composites and Advanced Materials for Industrial Applications. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5216-1.ch003.

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Nitinol has growing applications in aerospace industries, MEMS, and bio-medical industries due to its unique properties of pseudo-elasticity, bio-compatibility, and shape-memory effect. Behaviour of NiTi alloy can be changed by altering the composition, modifying the porosity, and applying external thermal and mechanical treatment. In this chapter, porous NiTi alloy with powder metallurgy is fabricated by varying the composition of polypropylene as an organic binder from 0% to 15%, and Young's modulus and porosity of porous alloy has been evaluated. The effect of process parameters—compaction pressure, sintering temperature, and sintering time—are evaluated using Taguchi L16 orthogonal array. These particles initially act as a binder but with the increase of temperature, the organic particles evaporate and create pores. With the increase of organic particle percentage, the porosity increases while Young's modulus decreases. SEM was used to characterize the fabricated porous NiTi alloy.
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Manna, Alakesh. "Taguchi, Fuzzy Logic and Grey Relational Analysis Based Optimization of ECSM Process during Micro Machining of E-Glass-Fibre-Epoxy Composite." In Computational Methods for Optimizing Manufacturing Technology. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-0128-4.ch010.

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In this chapter, the use of Taguchi method, Fuzzy logic, and Grey relational analysis based on an L16 (45) orthogonal array for optimizing the multi response process characteristics during electrochemical spark machining (ECSM) of electrically non-conductive e-glass-fibre-epoxy composite (e-glass-FEC) is reported. An electrochemical spark machining setup has been designed and fabricated for micro machining of e-glass-FEC and experimental results are utilized for optimizing the process parameter (DC supply voltage, Electrolyte concentration, and Gap between tool and auxiliary electrode) with considerations of the multiple responses such as material removal rate and over cut on hole radius effectively. From the analysis, it is found that at higher setting value of DC supply voltage (e.g. 70 volts) and at moderate setting value of electrolytic concentration (e.g. 80 g/l) and 180 mm gap between tool and auxiliary electrode the material removal rate (MRR) is maximum. Utilizing the test results, mathematical models for MRR and overcut on hole radius are developed to predict the setting value of ECSM parameters in advance.
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Kumar, Jatinder, Gurpreet Singh, and Santosh Kumar. "An Experimental Investigation of Process Optimization of EDM for Newly Developed Aluminium Metal Matrix Composites." In Metal Matrix Composites: A Modern Approach to Manufacturing. BENTHAM SCIENCE PUBLISHERS, 2024. http://dx.doi.org/10.2174/9789815223439124010012.

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The aim of this investigation is to investigate the contribution of controllable input parameters (viz. pulse on times, peak currents) on the performance of two newly developed MMCs (Al-8.5%SiC-1.5%Mo and Al-7%SiC-3%Mo). Both the metal matrix composites were fabricated using the stir-casting method. Thereafter, various tests such as microhardness test, tensile test, and porosity analysis of the newly developed composite were performed. To carry out the machining trials, an L18 orthogonal array (OA) was chosen. Optimization of the machining process was performed according to Taguchi analysis followed by grey relational analysis (GRA). The results showed that with increasing weight fraction of the molybdenum particulates, microhardness and density of the composites increase with a small reduction in the tensile strength. In addition, pulse on time is the most contributing parameter among others to obtain optimal process performance. The optimum setting of input variables suggested by GRA to obtain optimal responses is a molybdenum composition of 3%, Pulse on time of 70 µs, and a peak current of 9A. Based on the interaction plot, it is evident that process performance measures of EDM depend on controllable input parameters.
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Kalsi, Nirmal S., Rakesh Sehgal, and Vishal S. Sharma. "Grey-Based Taguchi Analysis Approach for Optimization of Multi-Objective Problem." In Advances in Business Information Systems and Analytics. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-5958-2.ch011.

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Due to the increase in complexity and expectations of more reliable solutions for a problem, the importance of multi-objective problem solutions is increasing day by day. It can play a significant role in making a decision. In the present approach, many combinations of the optimization techniques are proposed by the researchers. These hybrid evolutionary methods integrate positive characteristics of different methods and show the advantage to reach global optimization. In this chapter, Taguchi method and the GRA (Grey Relation Analysis) technique are pronounced and used to optimize a multi-objective metal cutting process to yield maximum performance of tungsten carbide-cobalt cutting tool inserts in turning. L18 orthogonal array is selected to analyze the effect of cutting speed, feed rate, and depth of cut using cryogenically treated and untreated inserts. The performance is evaluated in terms of main cutting force, power consumption, tool wear, and material removal rate using main effect plots of S/N (Signal to Noise) ratios. This chapter indicates that the grey-based Taguchi technique is not only a novel, efficient, and reliable method of optimization, but also contributes to satisfactory solution for multi-machining objectives in the turning process. It is concluded that cryogenically treated cutting tool inserts perform better. However, the feed rate affects the process performance most significantly.
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Conference papers on the topic "L16 Orthogonal Array"

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Tolentino, Andrew A., Mark Christian E. Manuel, and Reylina Garcia Tayactac. "Optimization of Helical Gear Plunge Shaving Cutting Parameters for Cutter Life Using Taguchi Method." In 2024 8th International Conference on Materials Engineering and Nano Sciences & 2024 8th International Conference on Material Engineering and Manufacturing. Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-wj0hyg.

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Gear shaving is a vital part of gear tooth finishing during the pre-hardened condition. Taguchi method was used to design a technique on selecting optimum gear cutting parameters, and on setting a standard in process programming of MHI FEN30A 4-axis shaving machine, for shaving of SCM20H material helical gear using plunge pattern. The final cutting stock, final feed rate and spindle speed were selected as the shaving parameters. Many experiments were conducted using the L16 orthogonal array. S/N response table shows the optimum cutting parameter combinations for cutting load, cutting time, and crowning which are A4B1C1, A1B1C4, and A3B4C4 respectively. The final feed rate is the most significant cutting parameter for the optimization of cutting load, cutting time, and crowning, having ANOVA percentage contributions of 49.6%, 99.01%, and 92.45% respectively. Quadratic regression was used to model predictive equations and contour plots having R2 values of 91.75%, 99.79%, and 91.81%. Predicted values from the quadratic regression model and estimated Taguchi optimum response were compared to the actual results using the optimum parameters for the validation of the experiment. All experimental results are within the 95% confidence of interval, and the percentage error between the experimental and predicted values are all below the acceptable 20%. Regression contour plots can be used for the selection of cutting parameters in process programming, given that the final feed rate is the priority for considering the cutter life, and secondly is the final depth of cut.
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Sreeharan, B. N., R. K. Nitheeshwar, R. Aswin Baalaje, and T. Kannan. "Optimization of GMAW control factors over weld bead parameters of AA 6351 material using Taguchi L16 orthogonal array." In THE 8TH ANNUAL INTERNATIONAL SEMINAR ON TRENDS IN SCIENCE AND SCIENCE EDUCATION (AISTSSE) 2021. AIP Publishing, 2022. http://dx.doi.org/10.1063/5.0108326.

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Najarian, F., M. Y. Noordin, F. M. Nor, and D. Kurniawan. "Analysis of Deep Hole Drilling in Presence of Electromagnetic Field Using Taguchi Technique." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-40139.

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Electromagnetic field assisted machining is potential and is of particular interest to be explored to improve machining quality with minimum environmental effect. In this study, the effect of electromagnetic field on tool and workpiece is analyzed along with the effects of presence of drilling bush, feedrate, and spindle speed to the quality of hole for deep hole drilling. The effect of these control factors to the drilled hole’s cylindricity error and roundness error was determined using Taguchi technique. L16 orthogonal array design of experiments was used, with regression model was calculated and tested using analysis of variance. Spindle speed was found to be the only significant factor, with other factors did not give significant effect to roundness or cylindricity, except for tool magnetization which affected cylindricity. Issues with magnetization system are likely hinder the magnetic field to exhibit potential to improve machining quality, and should be addressed for future study.
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Hong, Feng, Jianping Yuan, Yanguang Heng, Yanxia Fu, Banglun Zhou, and Weiwei Zong. "Numerical Optimal Design of Impeller Back Pump-Out Vanes on Axial Thrust in Centrifugal Pumps." In ASME 2013 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fedsm2013-16598.

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Axial thrust in centrifugal pumps attracts extensive attention in order to improve the operating reliability of pumps. High axial thrust can cause rapid thrust bearing wear and subsequent pump failure or frequent overhauls. A centrifugal pump (XA65/20) was selected in this study, based on L16 (43) orthogonal array and CFD methods. The time-averaged Navier-Stokes equation was calculated for a 3D steady flow in the model pump in ANSYS CFX with the standard k-ω turbulence model and standard wall function applied. The structured meshes with different numbers were used for comparison in order to confirm that the computational results were not influenced by the mesh. Meanwhile, the effects of impeller back pump-out vane geometrical parameters, including its thickness Sk, its outlet diameter De and axial clearance δ, on the axial thrust and performances of the model centrifugal pump were analyzed. The different orthogonal schemes were obtained on the different values of Sk, De, and δ. Finally, when the parameters of the impeller Sk, De, and δ are 5mm, 100mm, 1.5mm, respectively. The Best Efficiency Point (BEF) of 69.9% was achieved with 60.12m for the designed head and −952.133N for the minimum total axial force. The corresponding impeller with minimum total axial force was considered as the optimal scheme and manufactured for experimental test. The external characteristics by CFD have a good agreement with their experimental data, which also better verified the accuracy of the numerical method of axial thrust applied in this research.
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Kuruvila, Nixon, and H. V. Ravindra. "Parametric Influence and Optimization of Wire EDM on Oil Hardened Non Shrinking Steel." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-63379.

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Wire-cut Electro Discharge Machining (WEDM) is a special form of conventional EDM process in which electrode is a continuously moving conductive wire. The present study aims at determining parametric influence and optimum process parameters of Wire-EDM using Taguchi’s Technique and Genetic algorithm. The variation of the performance parameters with machining parameters was mathematically modeled by Regression analysis method. The objective functions are Dimensional Accuracy (DA) and Volumetric Material Removal Rate (VMRR). Experiments were designed as per Taguchi’s L16 Orthogonal Array (OA) where in Pulse-on duration, Current, Pulse-off duration, Bed-speed and Flushing rate have been considered as the important input parameters. The matrix experiments were conducted for the material Oil Hardened Non Shrinking Steel (OHNS) having the thickness of 40 mm. The results of the study reveals that among the machining parameters it is preferable to go in for smaller pulse-off duration for achieving over all good performance. Regarding MRR, OHNS is to be eroded with medium pulse-off duration and higher flush rate. Finally, the validation exercise performed with the optimum levels of the process parameters. The results confirm the efficiency of the approach employed for optimization of process parameters in this study.
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Mulik, R. S., and P. M. Pandey. "Experimental Investigations Into the Finishing Force and Torque in Magnetic Abrasive Finishing Process." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62365.

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Magnetic abrasive finishing (MAF) is a finishing process in which surface is finished by removing the material in the form of micro-chips by the magnetic and abrasive particles in the presence of a magnetic field. In a finishing process, forces have direct influence on the generation of finished surface and accuracy of the workpiece. The magnitude of force or torque is also of importance as the surface integrity is affected. In the present research work, new design of electromagnet which gave relatively lesser force and torque as compared to conventional annular electromagnet was used to perform MAF. The measurements of normal force and finishing torque were carried out at different processing conditions using Kistler’s dynamometer and were found in the order of 24 N and 8 Nm respectively. The experiments were planned using Taguchi’s L16 orthogonal array and supply voltage to electromagnet, rpm of electromagnet, finishing gap and abrasive weight percentage at four levels were considered as process parameters. Supply voltage to the electromagnet and finishing gap were found to be the significant factors affecting finishing force and torque in this work. The scanning electron microscopy (SEM) study of the finished workpiece showed that there was no surface or subsurface damage due to very low finishing force and torque.
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N, Suhas, Prasshanth C V, Anish Kumar U, and Lokavarapu Bhaskara Rao. "Investigating the Influence of Fiber Orientation on the Natural Frequency of Laminated Composite Plates." In Advances in Design, Materials, Manufacturing and Surface Engineering for Mobility (ADMMS’25). SAE International, 2025. https://doi.org/10.4271/2025-28-0183.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;This study investigates the frequency response characteristics of laminated composite rectangular plates, focusing on the influence of fiber orientation. The composite plates, composed of 12 layers of glass fiber reinforced polymer composites (GFRP), were chosen for their superior mechanical properties and broad applicability in engineering fields, including the automotive sector. In automotive engineering, these composites are valued for their lightweight properties and high strength, contributing to enhanced performance and fuel efficiency. The analysis employed a combination of finite element methods and Taguchi experimental design techniques to understand how fiber orientation affects the dynamic behavior of these plates. To systematically explore the impact of fiber orientation on the frequency response, the study utilized Taguchi's orthogonal array design. Specifically, the L9 (3^3) and L16 (4^4) orthogonal arrays were employed to structure the experimental runs effectively. These arrays minimize the number of experimental trials while ensuring a comprehensive exploration of the parameter space. Each group of three or four plies was treated as a control factor, with fiber orientation angles varied from 7.5 to 90 degrees. This range was chosen to encompass a wide spectrum of possible orientations, providing a thorough investigation. To identify the optimal fiber orientations for maximizing the frequency response, the study employed signal-to-noise (S/N) ratio analysis. This technique is integral to Taguchi methods, quantifying the robustness of the design by measuring the deviation of the response from the desired target. Higher S/N ratios correspond to better performance and stability, guiding the selection of optimal fiber orientations. Additionally, an analysis of variance (ANOVA) was performed to discern the statistical significance and contribution percentages of the control factors influencing the frequency response. This statistical tool was crucial in identifying the most influential parameters and their respective contributions. The combined use of finite element modeling, Taguchi design techniques, S/N ratio analysis, and ANOVA culminated in a comprehensive understanding of the frequency response characteristics of laminated composite plates. The findings highlight the critical role of fiber orientation in enhancing the frequency response of GFRP composite plates. Optimizing fiber orientation in composite materials can significantly improve vehicle performance by reducing vibrations and enhancing structural integrity.&lt;/div&gt;&lt;/div&gt;
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Shirguppikar, Shailesh, and Maharudra Patil. "Performance Analysis of Multi Wall Carbon Nanotubes (MWCNT) Coated Tool Electrode During Machining of Titanium Alloy (Ti6Al4V)." In ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8224.

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Abstract Electric Discharge Machining (EDM) is one of the leading non-conventional machining processes used to machine hard-to-cut materials in wide range of industrial, biomedical, automotive, defense and aerospace applications. EDM is a controlled spark generation process, which is usually used for machining of difficult to cut materials. In this study, experiments were performed on Titanium Alloy (Ti6Al4V) using thin-film multi-wall Carbon Nanotubes (MWCNT) coated electrode and uncoated aluminum electrodes. Morphological and structural investigations of MWCNT coating were performed using Scanning transmission electron microscope (TEM) and Raman spectroscopy. All experiments were designed with Taguchi’s L16 orthogonal array. Each experiment performed under different condition of current, gap voltage and pulse on time. MRR, TWR, SR and OC are studied for each experiment. It was observed that MWCNT coated electrode gives better surface roughness, higher material removal rate, and lower tool wear rate. The experimental result showed that MRR increased by 14.15%, tool wear rate decreased by 23.40%, surface roughness reduced by 22.14 % and overcut reduced by 23.43 % respectively as compared to uncoated aluminum electrodes. All performance responses improved with thin-film MWCNT coated electrode due to magnificent electrical conductivity and chemical stability of CNT. Analysis of Variance (ANOVA) carried out to understand significant process parameters and its contribution in mentioned response variables. Multi-Wall CNT shows better results at high temperature and prevents the tool wear rate. The surface roughness of Ti6Al4V improved with MWCNT coated electrode and it was evident with scanning electron microscope (SEM) images of workpiece. Comparative study of coated and non-coated gives new development of novel electrode tool for electric discharge machining processes.
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Wambua, J. M., F. M. Mwema, E. T. Akinlabi, and Buddi Tanya. "Optimization of CNC Milling of General-Purpose Poly (Methyl Methacrylate)." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-68756.

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Abstract The purpose of this study was to investigate the impact of CNC milling parameters on the material removal rate (MRR) and surface roughness (Ra) of the general-purpose PMMA. The milling parameters considered were cutting speed, axial depth of cut and feed rate, each having four levels obtained through experimental trial and error. The levels were 300 rpm, 700 rpm, 1300 rpm, and 2000 rpm for the cutting speed; 0.3 mm, 0.8 mm, 1.5 mm, and 2 mm for the axial depth of cut; and 50 mm/min, 100 mm/min, 200 mm/min, and 350 mm/min for the feed rate. The Taguchi technique was used to design the experiments and carry out the analysis and optimization with an L16 orthogonal array. From the analysis, the optimal milling parameters for the maximum MRR were a cutting speed of 300 rpm, an axial depth of cut of 2 mm, and a 350 mm/min feed rate. The optimal CNC milling parameters for the least Ra were obtained at a cutting speed of 2000 rpm, an axial depth of cut of 0.3 mm, and a 50 mm/min feed rate. An ANOVA conducted depicted that all three factors were significant towards the MRR with the feed rate having the highest percentage contribution (48.8%), followed by the depth of cut (38.3%), and lastly, the cutting speed (9.8%). An ANOVA for Ra depicted that cutting speed and feed rate were the most significant factors. The axial depth of cut was insignificant towards the mean surface roughness. In terms of percentage contributions to the mean surface roughness, the cutting speed had the highest contribution (59.9%), followed by the feed rate (19.4%), and lastly, the axial depth of cut (13.9%).
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10

Srinivas, Ch Lakshmi, N. Bharat Kumar, N. Brahmaiah, P. Siva Kumar, P. Abhinash, and D. Vijay Praveen. "WEDM Parametric Study on Machining Responses of AA-6082/MoS<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> HMMCs." In 1st International Conference on Mechanical Engineering and Emerging Technologies. Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/p-az16q5.

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The current research paper was focused on investigating the influence of wire electrical discharge machining parameters on machining responses of AA-6082/MoS2/Al2O3 Hybrid Metal Matrix Composites (HMMCs). In this paper, Taguchi L18 (2^1 ×3^4) orthogonal array was adopted to conduct the experiments. From the experimental investigations, it was observed that the electrode wire type, pulse on time, and pulse off time have shown a remarkable effect on the machining responses. Keywords: Al-MMC, AA-6082, Stir casting, MRR, Taguchi method
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