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Relevant bibliographies by topics / Composite materials – Quality control

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Academic literature on the topic 'Composite materials – Quality control'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

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Journal articles on the topic "Composite materials – Quality control"

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Garkina, Irina, and Alexander Danilov. "Control of Properties of Composite Materials - Quality Functional." Defect and Diffusion Forum 394 (August 2019): 15–19. http://dx.doi.org/10.4028/www.scientific.net/ddf.394.15.

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Methodological principles for the development of composite materials with the desiredstructure and properties are proposed. One of the perspective directions of development ofcomposite materials by their representation as multi-purpose systems with the corresponding systemattributes is considered. The structure of quality functional for objective assessment of quality ofkinetic processes of formation of physic-mechanical characteristics of a composite is developed.The technique of synthesis of construction material based on application of lines of equal level ofquality functional is offered.

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Bityukov, Yu I., and Yu I. Deniskin. "Quality Control of Structures Made of Composite Materials." Polymer Science, Series D 11, no. 2 (2018): 197–201. http://dx.doi.org/10.1134/s1995421218020041.

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Dmitriev, S., A. Ishkov, Vladimir Malikov, and A. Sagalakov. "Control Quality of Composite Materials by Using Subminiature Eddy Current Transducers." Materials Science Forum 945 (February 2019): 866–72. http://dx.doi.org/10.4028/www.scientific.net/msf.945.866.

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Based eddy current transducer (ECT), a probe has been designed to research composite materials. Defects inspection of composite materials is performed to determine the following standard defects: defect of the metallic and (or) polymer layer uniformity. The subminiature ECT of the original design is used as a sensor in this device, it is made according to a differential scheme of switching on of the coils of a transformer ECT and allowing to localize the control area up to 0.1-0.5 mm. The measurement procedure allowing one to detect defects in composite materials with a high accuracy is described. The sensor was tested on the composite material consisting of paper or low-density polyethylene and aluminum layers in which the model defect was placed. The dependences of the ECT signal on the defect in this structure are given. The determined dependence of electrical conductivity of composite materials on model defects make it possible to carry out defects inspection of composite materials.

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Afonin, Victor V., Irina V. Erofeeva, Marina M. Zotkina, Denis V. Emelyanov, and Nikolay Yu Podzhivotov. "Reference image quality assessment of composite materials exposed to positive and negative temperatures." Vestnik MGSU, no. 1 (January 2019): 83–93. http://dx.doi.org/10.22227/1997-0935.2019.1.83-93.

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ABSTRACT Introduction. The question of a comparative assessment of the quality of images obtained as a result of scanning test composite materials exposed under the cyclic effects of positive and negative temperatures is considered. The samples are sorted relative to the reference numerical metric expressed as a percentage. Materials and methods. The compared composites differ in composition relative to the control sample. Periodic scanning of the tested composites is carried out during several control points of time. A comparative analysis of the image quality of test composites was carried out both during the entire exposure time and at the control points of time. On the basis of the existing algorithm Structural Similarity Index for measuring image quality (SSIM), percentage indicators of sample quality were determined depending on the composition and exposure time. The results obtained allow the selection of composite materials in accordance with the level of structural similarity in structural color characteristics. According to the SSIM algorithm, the resulting metric values are in the range [-1; +1]. Full structural similarity corresponds to a value equal to one. It is proposed to express the SSIM metric as a percentage with the transformation that the change in the color structural difference of the relative control sample can vary from zero to 100 %. Results. For the proposed method of comparing images of scanned samples of composite materials, ten samples of composite materials of different composition were used. Numerical results of the experiment with their graphical visualization give a clear idea of the nature of the change in color characteristics relative to the control sample. Consistent evaluation at the exposure points shows the nature of changes in the properties of materials from the duration of exposure to cyclic changes in positive and negative temperatures. Conclusions. The proposed benchmark image quality assessment based on the existing SSIM algorithm allows you to quickly investigate groups of materials, the change in properties of which is caused by their exposure in adverse operating conditions.

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Pileckas, Eugenijus. "DYNAMIC FOCUSING OF ELECTROACOUSTIC ARRAYS IN NON‐DESRUCTIVE CONTROL COMPOSITE MATERIALS." Aviation 14, no. 2 (2010): 49–53. http://dx.doi.org/10.3846/aviation.2010.08.

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Nowadays the application possibilities for composite materials for aviation are increasing, and monitoring their quality during production and exploitation is becoming more and more relevant. Acoustic non‐destructive control technologies provide promising possibilities for monitoring and analysing the characteristics and parameters of composites. This paper discusses an acceptable modelling method based on acoustic images of composite material analysis using a dynamic beam focusing method of an acoustic antenna array. Santrauka Vis plačiau naudojant kompozitines medžiagas aviacijoje aktualeja ir ju kokybes būsenos stebejimas konstrukciju gamybos ir eksploatacijos metu. Akustines neardomosios kontroles technologijos atveria, mūsu nuomone, perspektyvias kompozitiniu medžiagu charakteristiku bei ju parametru stebejimo ir tyrimo galimybes. Straipsnyje nagrinejamas priimtinas kompozitiniu medžiagu tyrimui akustiniu vaizdu formavimo būdas, panaudojant akustines antenu gardeles dinamini spindulio fokusavimo būda.

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Thomas, Matthew M., Babu Joseph, and John L. Kardos. "Batch chemical process quality control applied to curing of composite materials." AIChE Journal 43, no. 10 (1997): 2535–45. http://dx.doi.org/10.1002/aic.690431015.

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Voitovich, Elena Valerievna, Natalia Ivanovna Kozhukhova, Alla Vasilievna Cherevatova, Igor Vladimirovich Zhernovsky, and Maya Sergeevna Osadchaya. "Features of Quality Control of Free of Cement Binder of Non-Hydration Type." Applied Mechanics and Materials 724 (January 2015): 39–43. http://dx.doi.org/10.4028/www.scientific.net/amm.724.39.

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Analysis of methods of quality control, applied for binding systems and based materials was curried out. Also the classification of quality control methods for nanostructured binder (NB) in the light of its adaptability to this binder and composites on its basis is developed.The scheme of quality parameter control for NB and based materials in the framework of technological process "raw→binder→final composite" is developed. The basic characteristics of NB on the basis of quartz sands of different deposits are studied as well as the norms and requirements to controlled parameters when production process, allowing supplying quality of final product are determined.

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Ulker, Onur. "Surface Roughness of Composite Panels as a Quality Control Tool." Materials 11, no. 3 (2018): 407. http://dx.doi.org/10.3390/ma11030407.

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Murashov, V. V., and S. I. Trifonova. "Quality control of polymer composite materials using ultrasonic time-of-flight velocimetric technique." «Aviation Materials and Technologies», no. 4 (2015): 86–90. http://dx.doi.org/10.18577/2071-9140-2015-0-4-86-90.

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Thomsen, J. J., and K. Lund. "Quality control of composite materials by neural network analysis of ultrasonic power spectra." NDT & E International 25, no. 1 (1992): 42. http://dx.doi.org/10.1016/0963-8695(92)90059-p.

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Dissertations / Theses on the topic "Composite materials – Quality control"

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Kenerson, Jonathan E. "Quality Assurance and Quality Control Methods for Resin Infusion." Fogler Library, University of Maine, 2010. http://www.library.umaine.edu/theses/pdf/KenersonJE2010.pdf.

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Copeland, Natalie Suzanne. "Evaluating a wood-strand material for wind erosion control and air quality protection." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Thesis/Fall2007/n_copeland_113007.pdf.

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Cuevas, Salcido Alvaro. "Using the Taguchi design and central composite design to increase the robustness of a process from its raw material variability." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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Elshafei, Mostafa Adnan. "Smart composite plate shape control using piezoelectric materials." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA320548.

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Dissertation (Ph.D. in Aeronautical and Astronautical Engineering) Naval Postgraduate School, September 1996.<br>Dissertation supervisor(s): B.N. Agrawal. "September 1996." Includes bibliographical references (p. 111-118). Also available online.

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Gummadi, Lakshmana Nagesh Babu. "Active control of delaminations in smart composite structures." Diss., Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/13022.

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Koike, Ayako. "Torsional and flexural control of sandwich composite beams with piezoelectric actuators." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-06232009-063235/.

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Huang, Da. "Approximate analytical solutions for vibration control of smart composite beams." Thesis, Peninsula Technikon, 1999. http://hdl.handle.net/20.500.11838/1262.

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Thesis (MTech (Mechanical Engineering))--Peninsula Technikon, Cape Town,1999<br>Smart structures technology featuring a network of sensors and actuators, real-time control capabilities, computational capabilities and host material will have tremendous impact upon the design, development and manufacture of the next generation of products in diverse industries. The idea of applying smart materials to mechanical and structural systems has been studied by researchers in various disciplines. Among the promising materials with adaptable properties such as piezoelectric polymers and ceramics, shape memory alloys, electrorheological fluids and optical fibers, piezoelectric materials can be used both as sensors and actuators because of their high direct and converse piezoelectric effects. The advantage of incorporating these special types of material into the structure is that the sensing and actuating mechanism becomes part of the structure by sensing and actuating strains directly. This advantage is especially apparent for structures that are deployed in aerospace and civil engineering. Active control systems that rely on piezoelectric materials are effective in controlling the vibrations of structural elements such as beams, plates and shells. The beam as a fundamental structural element is widely used in all construction. The purpose of the present project is to derive a set of approximate governing equations of smart composite beams. The approximate analytical solution for laminated beams with piezoelectric laminae and its control effect will be also presented. According to the review of the related literature, active vibration control analysis of smart beams subjected to an impulsive loading and a periodic excitation are simulated numerically and tested experimentally.

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Gaete-Martinez, Victor. "Optical Measurement of Strang Geometry and Orientation and Their Influence on Oriented Strand Composite Formation Quality." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/theses.asp?highlight=1&Cmd=abstract&ID=FTY2009-004.

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Wang, Ya. "Simultaneous Energy Harvesting and Vibration Control via Piezoelectric Materials." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/26191.

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This work examines a novel concept and design of simultaneous energy harvesting and vibration control on the same host structure. The motivating application is a multifunctional composite sandwich wing spar for a small Unmanned Aerial Vehicle (UAV) with the goal of providing self-contained gust alleviation. The basic idea is that the wing itself is able to harvest energy from the ambient vibrations along with available sunlight during normal flight. If the wing experiences any strong wind gust, it will sense the increased vibration levels and provide vibration control to maintain its stability. This work holds promise for improving performance of small UAVs in wind gusts. The proposed multifunctional wing spar integrates a flexible solar cell array, flexible piezoelectric wafers, a thin film battery and an electronic module into a composite sandwich structure. The basic design factors are discussed for a beam-like multifunctional wing spar with load-bearing energy harvesting, strain sensing and self-controlling functions. Three-point bending tests are performed on the composite sandwich structure for bending strength analysis and bending stiffness prediction under a given safety factor. Additional design factors such as the configuration, location and actuation type of each piezoelectric transducer are investigated for optimal power generation. The equivalent electromechanical representations of a multifunctional wing spar is derived theoretically, simulated numerically and validated experimentally. Special attention is given to the development of a reduced energy control (REC) law, aiming to minimize the actuation energy and the dissipated heat. The REC law integrates a nonlinear switching algorithm with a positive strain feedback controller, and is represented by a positive feedback operation amplifier (op-amp) and a voltage buffer op-amp for each mode. Experimental results exhibit that the use of nonlinear REC law requires 67.3 % less power than a conventional nonlinear controller to have the same settling time under free vibrations. Nonlinearity in the electromechanical coupling coefficient of the piezoelectric transducer is also observed, arising from the piezoelectric hysteresis in the constitutive equations coupling the strain field and the electric field. If a constant and voltage-independent electromechanical coupling coefficient is assumed, this nonlinearity results in considerable discrepancies between experimental measurements and simulation results. The voltage-dependent coupling coefficient function is identified experimentally, and a real time adaptive control algorithm is developed to account for the nonlinear coupling behavior, allowing for more accurate numerical simulations. Experimental validations build upon recent advances in harvester, sensor and actuator technology that have resulted in thin, light-weight multilayered composite sandwich wing spars. These multifunctional wing spars are designed and validated to able to alleviate wind gust of small UAVs using the harvested energy. Experimental results are presented for cantilever wing spars with micro-fiber composite transducers controlled by reduced energy controllers with a focus on two vibration modes. A reduction of 11dB and 7dB is obtained for the first and the second mode using the harvested ambient energy. This work demonstrates the use of reduced energy control laws for solving gust alleviation problems in small UAVs, provides the experimental verification details, and focuses on applications to autonomous light-weight aerospace systems.<br>Ph. D.

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Thompson, Eric J. "Design of a multi-piece removable mandrel mold tool to fabricate and control inner mold surface contour of a composite wing spar." Morgantown, W. Va. : [West Virginia University Libraries], 2010. http://hdl.handle.net/10450/11141.

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Thesis (M.S.)--West Virginia University, 2010.<br>Title from document title page. Document formatted into pages; contains viii, 69 p. : col. ill. Includes abstract. Includes bibliographical references (p. 69).

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Books on the topic "Composite materials – Quality control"

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Grisaffe, Salvatore J. The materials division: A case study. Lewis Research Center, 1989.

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Grisaffe, Salvatore J. The materials division: A case study. Lewis Research Center, 1989.

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J, Herriot, ed. Composites evaluation: Proceedings of the Second International Conference on Testing, Evaluation, and Quality Control of Composites--TEQC 87, University of Surrey, Guilford, UK, 22-24 September 1987. Butterworths, 1987.

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World Health Organization (WHO). Quality control methods for herbal materials. World Health Organization, 2011.

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Papailiou, Konstantin O. Silicone Composite Insulators: Materials, Design, Applications. Springer Berlin Heidelberg, 2013.

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Chattopadhyay, Aditi. Analysis of smart composite structures including debonding. National Aeronautics and Space Administration, 1997.

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Chattopadhyay, Aditi. Analysis of smart composite structures including debonding. National Aeronautics and Space Administration, 1997.

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Koenigshof, Gerald A. Performance and quality-control standards for composite floor, wall, and truss framing. U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1985.

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Koenigshof, Gerald A. Performance and quality-control standards for composite floor, wall, and truss framing. U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1985.

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Koenigshof, Gerald A. Performance and quality-control standards for composite floor, wall, and truss framing. U.S. Dept. of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1985.

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Book chapters on the topic "Composite materials – Quality control"

1

Zhang, Zuoguang, Zilong Zhang, Zhen Shen, Shuangqi He, Yubin Li, and Ming Chao. "Composite Property Testing, Characterization, and Quality Control." In Composite Materials Engineering, Volume 1. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-5696-3_5.

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Crivelli-Visconti, I., G. C. Caprino, and L. Nele. "Quality Assurance and Quality Control Enhancement in Composite Enterprises." In Developments in the Science and Technology of Composite Materials. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0787-4_85.

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Bres, S., H. Emptoz, and G. Merle. "Transparency quantification. Application to composite materials quality controls by image processing." In Computer Analysis of Images and Patterns. Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/3-540-57233-3_99.

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Jog, Shubham, Kevin Anthony, Manasi Bhoinkar, Komal Kadam, and Mahesh M. Patil. "Modelling and Analysis of IC Engine Piston with Composite Material (AlSi17Cu5MgNi)." In ICRRM 2019 – System Reliability, Quality Control, Safety, Maintenance and Management. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8507-0_25.

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Jaeger, Richard F. "Control Quality Control." In A Collection of Papers Presented at the 1978, 1979, and 1980 Meetings of the Materials & Equipment/Whitewares: Ceramic Engineering and Science Proceedings, Volume 1, Issue 9/10. John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470291047.ch24.

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Wakabayashi, Kazutami. "Quality Control of Raw Materials." In Handbook of Adhesion Technology. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-01169-6_40.

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Wakabayashi, Kazutami. "Quality Control of Raw Materials." In Handbook of Adhesion Technology. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-42087-5_40-2.

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Harrison, Patrick, and Geoff Hale. "Quality Control of Raw Materials." In Diagnostic and Therapeutic Antibodies. Humana Press, 2000. http://dx.doi.org/10.1385/1-59259-076-4:295.

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Wakabayashi, Kazutami. "Quality Control of Raw Materials." In Handbook of Adhesion Technology. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-55411-2_40.

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Jackson, Neil, and Ravindra K. Dhir. "Concrete Mix Design and Quality Control." In Civil Engineering Materials. Macmillan Education UK, 1996. http://dx.doi.org/10.1007/978-1-349-13729-9_17.

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Conference papers on the topic "Composite materials – Quality control"

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Echeverria, Leire, Alvaro Ruiz Emparanza, Antonio Nanni, and Francisco De Caso y Basalo. "Quality control methodology for composite FRP rebars." In Fifth International Conference on Sustainable Construction Materials and Technologies. Coventry University and The University of Wisconsin Milwaukee Centre for By-products Utilization, 2019. http://dx.doi.org/10.18552/2019/idscmt5147.

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Swiderski, Waldemar. "Lock-in thermography to rapid evaluation of destruction area in composite materials used in military applications." In Quality Control by Artificial Vision, edited by Kenneth W. Tobin, Jr. and Fabrice Meriaudeau. SPIE, 2003. http://dx.doi.org/10.1117/12.515159.

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Zemanek, Zdenek. "Using holographic interferometry for quality control of composite materials and consequentially for construction." In Tenth Polish-Czech-Slovak Optical Conference: Wave and Quantum Aspects of Contemporary Optics. SPIE, 1998. http://dx.doi.org/10.1117/12.301332.

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Weigl, Eva, Sebastian Zambal, Matthias Stöger, and Christian Eitzinger. "Photometric stereo sensor for robot-assisted industrial quality inspection of coated composite material surfaces." In The International Conference on Quality Control by Artificial Vision 2015, edited by Fabrice Meriaudeau and Olivier Aubreton. SPIE, 2015. http://dx.doi.org/10.1117/12.2182750.

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Kolavennu, Soumitri, Wendy Foslien, Anoop Mathur, and Sanjay Parthasarathy. "Design for Control and Optimization of Flow Front Progression in Liquid Molding Processes." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/dfm-21175.

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Abstract The processing of composite materials has advanced from being a fine art to a well-studied science. The Advanced Materials Intelligent Processing Center (AMIPC) program demonstrates the use of process models, advanced technologies and data-centric algorithms to improve the quality and consistency of composites processing. As part of the AMIPC program, the Intelligent Process Control group at Honeywell developed a design environment for on-line control and disturbance rejection in Resin Transfer Molding process. In this paper we present a “design for control” methodology that proved to be a well suited for intelligent control of RTM processes. The major point addressed in this research is “Control issues need to be analyzed DURING process design”.

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Tsotsis, Thomas K. "Requirements for Moving Towards Liquid Molding of Large Composite Structures for Aerospace." In ASME 2013 International Manufacturing Science and Engineering Conference collocated with the 41st North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/msec2013-1023.

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Requirements for moving beyond the current state of the art in polymer-matrix composites for large commercial and military transport aircraft via the use of liquid molding will be presented. These requirements will be rooted in understandings of regulatory safety requirements and in recent developments in materials and modeling. Key parameters such as the interrelationships between modeling, quality control, and scale-up will be discussed in some detail with a focus on how these need to be matured or adapted for aerospace usage and how they address the persistent need for improved performance at reduced weight. Ongoing work in several technologies will be presented relative to how they fit into the maturation of next-generation composites and tools for developing new composite materials. Scale-up will be illustrated by examples in modeling moving up from material-property-level requirements to system-level performance and moving down to micro and submicron level. These illustrations will be used to show an approach for effectively moving between scales in modeling, testing, fabrication, and design.

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Tadros, Michael M. "Concept Design for a Composite Manufacturing Robot." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39739.

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Manufacturing of advanced composite test specimens and small parts in a research lab environment is often done by hand lay-up. Associated drawbacks include errors in stacking sequence, ply angles, geometry and material waste. The manufactured specimens are often used for testing and concept validation and as such should be representative of parts manufactured using fully automated processes resulting in a finished part with significantly higher quality and geometric tolerances. To this end, a concept design for a manufacturing robot has been developed and constructed. The robot suits the needs of a research lab environment size wise and rate and number of manufactured parts from pre-impregnated tape materials. Details of the concept design, manufacturing, control and operation are provided. An assessment of the robot versatility, portability versus cost is presented.

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Conder, Robert J., Peter Felton, Richard Smith, Raymond Burke, Frits Dijkstra, and Xavier Deleye. "Key Quality Aspects for a New Metallic Composite Pipe: Corrosion Testing, Welding, Weld Inspection and Manufacturing." In 2010 8th International Pipeline Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ipc2010-31073.

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The composite pipe system, known as XPipe™, uses high-performance adhesives to manufacture a metallic composite pipe. Both technical development and a robust manufacturing quality system are required to ensure the safe use of such novel technology. Several aspects are discussed in this paper. Firstly, the use of ultra-high strength martensitic steels in a buried, cathodically protected environment requires an understanding of their susceptibility to hydrogen embrittlement. A series of slow strain rate and constant load tests was performed under polarised conditions to establish any reduction in ductility over samples tested in air. The results are presented and implications for their use in such a system are discussed. Secondly, although the technology to perform quality welds in thin walled austenitic materials using automated orbital techniques is well established, weld inspection by radiographic techniques is not preferred due to the continuous nature of the process and safety considerations. However, the inspection of such welds by ultrasonic techniques is challenging due to the coarse grained nature of the austenitic welds and the thinness of the liner, well below the 6mm normally considered the minimum for conventional weld inspection. Therefore, Automated Ultrasonic Testing (AUT) requires optimized ultrasonic techniques. AUT capabilities and recommendations towards an optimal inspection concept will be discussed in this paper. Thirdly, the manufacture of the liner, ultra-high strength steel strip and adhesive into the XPipe™ composite pipe requires a robust manufacturing control system, which maintains traceability of the incoming materials and controls and records all the essential parameters during pipe production. This is achieved using a sophisticated SCADA system, using feedback from a variety of sensors.

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Ji, Renhe, Dong Du, Baohua Chang, Li Wang, Jinle Zeng, and Yuxiang Hong. "Research on the Coordination of Multiple Air Circulating Tempering Furnaces Using System Identification and Predictive Control in Manufacturing of Non-Combustible Aluminum Composite Panels." In ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-2830.

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Non-combustible aluminum composite panel is a new type of green building and decoration material with high security. However, during its manufacturing process, the incongruity of temperature cyclings between a series of air circulating tempering furnaces on the production line may cause a serious negative impact on the stability of product quality. In this paper, a model of the temperature control system of a tempering furnace was built at first by applying parameter identification technique to the off-line data of the furnace. Then, an approach based on online parameter identification and model predictive control was proposed to solve the dilemma that the specific temperature range of one single tempering furnace and the temperature cyclings coordination of multiple tempering furnaces can not be attained at the same time when using PID or On-Off control method. A method was presented to optimize the phase difference between the temperature cyclings of differents furnaces’ to lower the fluctuation of product quality. Finally, experiments are used to demonstrate the descent in fluctuation using the methods proposed in this paper.

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Keulen, Casey, Bruno Rocha, Afzal Suleman, and Mehmet Yildiz. "Design of an Embedded Sensor Network for Manufacturing Process Monitoring, Quality Control Management and Structural Health Assessment of Advanced Composite Structures." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-38719.

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This paper proposes the use of an embedded network of fiber optic sensors for process and Structural Health Monitoring (SHM) of Resin Transfer Molded (RTM) composite structures. A single sensor network is used at each stage of life of a RTM composite panel: flow monitoring, cure monitoring and health monitoring. A laboratory scale RTM apparatus was designed and built with the capability of visually monitoring the resin filling process. A technique for embedding fiber optic sensors into the mold has also been developed. Both Fiber Bragg Gratings (FBG) and Etched Fiber Sensors (EFS) have been embedded in composite panels using the apparatus. Etched Fiber Sensors have the capability of detecting the presence of resin. The sensors have proven to be capable of detecting the presence of resin at various locations as it is injected into the mold and have the capability of being multiplexed with FBGs thus reducing the number of ingress/egress locations required per sensor. Two FBGs and three EFSs were embedded on a single optical fiber. Tensile test specimens that contain embedded FBG sensors have also been produced with this apparatus. These specimen and embedded sensors have been characterized using a strain gage and a material testing machine. FBG sensors have been embedded into composite panels also in a manner that is conducive to detecting Lamb waves generated with a centrally located PZT. To detect Lamb waves a high speed, high precision sensing technique is required for embedded FBGs, since these guided waves travel through the material at very high velocities, presenting relatively small strain amplitudes. A technique based in a filter consisting of a second FBG was developed. Since this filter is not dependant on moving parts, it does not limit the velocity or frequency at which the tests can be performed. Preliminary tests performed using this filter showed that it is possible to detect Lamb waves with amplitudes smaller than 1 microstrain. A damage detection algorithm has been developed and is applied to this system in an attempt to detect and localize damages (cracks and delaminations) in the composite structure.

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Reports on the topic "Composite materials – Quality control"

1

Wolf, Lawrence J. Tensile Tests for Quality Control of Injection Molded Composite Posts. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/1119332.

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2

Thornell, Travis, Charles Weiss, Sarah Williams, et al. Magnetorheological composite materials (MRCMs) for instant and adaptable structural control. Engineer Research and Development Center (U.S.), 2020. http://dx.doi.org/10.21079/11681/38721.

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Magnetic responsive materials can be used in a variety of applications. For structural applications, the ability to create tunable moduli from relatively soft materials with applied electromagnetic stimuli can be advantageous for light-weight protection. This study investigated magnetorheological composite materials involving carbonyl iron particles (CIP) embedded into two different systems. The first material system was a model cementitious system of CIP and kaolinite clay dispersed in mineral oil. The magnetorheological behaviors were investigated by using parallel plates with an attached magnetic accessory to evaluate deformations up to 1 T. The yield stress of these slurries was measured by using rotational and oscillatory experiments and was found to be controllable based on CIP loading and magnetic field strength with yield stresses ranging from 10 to 104 Pa. The second material system utilized a polystyrene-butadiene rubber solvent-cast films with CIP embedded. The flexible matrix can stiffen and become rigid when an external field is applied. For CIP loadings of 8% and 17% vol %, the storage modulus response for each loading stiffened by 22% and 74%, respectively.

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3

Pitchumani, Ranga. Total Quality Optimal Fabrication of Composite Materials via Liquid Molding and Intelligent Simulation-Assisted Liquid Composite Molding. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada402954.

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Koenigshof, Gerald A. Performance and quality-control standards for composite floor, wall, and truss framing. U.S. Department of Agriculture, Forest Service, Southeastern Forest Experiment Station, 1985. http://dx.doi.org/10.2737/se-gtr-33.

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5

Chu, C. W., and K. Salama. Materials, Processing and Quality Control for High Performance Coated High Temperature Superconducting Conductors. Defense Technical Information Center, 2005. http://dx.doi.org/10.21236/ada430184.

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Chu, C. W. Materials, Processing and Quality Control for High Performance Coated High Temperature Superconducting Conductors. Defense Technical Information Center, 2006. http://dx.doi.org/10.21236/ada473427.

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7

Osbourn, G. C. LDRD final report on enhanced edge detection techniques for manufacturing quality control and materials characterization. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/437667.

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Daniel, Claus, Beth L. Armstrong, L. Curt Maxey, et al. Final Report - Recovery Act - Development and application of processing and process control for nano-composite materials for lithium ion batteries. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1095726.

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Dickson, A. G. Final Report: The Quality Control of Oceanic Carbon Dioxide Measurements: Preparation and Distribution of Reference Materials, May 1, 1992 - March 14, 1998. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/765701.

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Dickson, A. G. The quality of control of oceanic carbon dioxide measurements: Preparation and distribution of reference materials. Progress report, January 1, 1993--December 31, 1993. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10134267.

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