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Simulation And Validation Of Mold Filling During Compression Resin Transfer Molding Crtm Process
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Book Synopsis Simulation and Validation of Mold Filling During Compression Resin Transfer Molding (CRTM) Process by : Prabhas M. Bhat
Download or read book Simulation and Validation of Mold Filling During Compression Resin Transfer Molding (CRTM) Process written by Prabhas M. Bhat and published by ProQuest. This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In Compression Resin Transfer Molding (CRTM), the fiber preform is placed in the mold; the top of the mold is lowered until there is a small gap between the preform and the mold. The measured amount of resin is injected through one or more gates into this highly permeable gap. Then the resin injection is switched off and the mold is closed by moving the mold platen towards the preform until it reaches the desired thickness. This action compresses the preform and pressurizes the resin to flow into the preform and occupy the empty regions between the fibers. This process is very attractive for high volume production of net shape composite structures and is being considered by automobile manufacturing industry for structural components. The challenge is to create void free structures with reasonable applied force with filling times of the order of a few minutes. A model and simulation of the process can help identify the important parameters in the process that will aid in achieving this goal. An existing numerical simulation that can model the RTM process has been modified to accommodate the presence of gap elements, compression of preform and reduction of mesh size during the process. The process is modeled in three stages: (i) resin injection into the gap, (ii) closing of the gap with negligible compression of the preform and (iii) preform compaction. An analysis of the process has been conducted to identify the important non-dimensional parameters that influence the process. A parametric study reveals the relationship between the material, process and the geometric variables in this process. To validate the numerical model, an experimental set-up was constructed. The set-up includes a semi cylindrical transparent mold which is compressed using pressurized water in a collapsible tube. Independent experiments are conducted to measure the permeability of the fabric and the force required for compression. Various process parameters such as the location of the resin front during the compression, the rate of compression and the force are recorded as a function of time. These results are compared with the simulation to gauge the accuracy of the model and the reliability in the characterization of the material parameters. This simulation should prove useful in development of process inputs for large scale structures to produce void free parts with optimal compression rates and pressures.
Book Synopsis Advanced Fibre-Reinforced Polymer (FRP) Composites for Structural Applications by : Jiping Bai
Download or read book Advanced Fibre-Reinforced Polymer (FRP) Composites for Structural Applications written by Jiping Bai and published by Woodhead Publishing. This book was released on 2022-12-05 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Fibre-reinforced Polymer (FRP) Composites for Structural Applications, Second Edition provides updates on new research that has been carried out on the use of FRP composites for structural applications. These include the further development of advanced FRP composites materials that achieve lighter and stronger FRP composites, how to enhance FRP integrated behavior through matrix modification, along with information on pretension treatments and intelligence technology. The development of new technology such as automated manufacturing and processing of fiber-reinforced polymer (FRP) composites have played a significant role in optimizing fabrication processing and matrix formation. In this new edition, all chapters have been brought fully up-to-date to take on the key aspects mentioned above. The book's chapters cover all areas relevant to advanced FRP composites, from the material itself, its manufacturing, properties, testing and applications in structural and civil engineering. Applications span from civil engineering, to buildings and the energy industry. Covers all areas relevant to advanced FRP composites, from the material itself, its manufacturing, properties, testing and applications in structural engineering Features new manufacturing techniques, such as automated fiber placement and 3D printing of composites Includes various applications, such as prestressed-FRP, FRP made of short fibers, continuous structural health monitoring using advanced optical fiber Bragg grating (FBG), durability of FRP-strengthened structures, and the application of carbon nano-tubes or platelets for enhancing durability of FRP-bonded structures
Book Synopsis Process simulation of wet compression moulding for continuous fibre-reinforced polymers by : Poppe, Christian Timo
Download or read book Process simulation of wet compression moulding for continuous fibre-reinforced polymers written by Poppe, Christian Timo and published by KIT Scientific Publishing. This book was released on 2022-07-18 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interdisciplinary development approaches for system-efficient lightweight design unite a comprehensive understanding of materials, processes and methods. This applies particularly to continuous fibre-reinforced plastics (CoFRPs), which offer high weight-specific material properties and enable load path-optimised designs. This thesis is dedicated to understanding and modelling Wet Compression Moulding (WCM) to facilitate large-volume production of CoFRP structural components.
Book Synopsis Manufacturing Techniques for Polymer Matrix Composites (PMCs) by : Suresh G Advani
Download or read book Manufacturing Techniques for Polymer Matrix Composites (PMCs) written by Suresh G Advani and published by Elsevier. This book was released on 2012-07-18 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer matrix composites are used extensively across a wide range of industries, making the design and development of effective manufacturing processes of great importance. Manufacturing techniques for polymer matrix composites (PMCs) provides an authoritative review of the different technologies employed in the manufacture of this class of composite. Following an introduction to composites and manufacturing processes, part one reviews the manufacturing of short fiber and nanoparticle based polymer matrix composites, with injection and compression molding examined in depth. Thermoplastic processing is the focus of part two. Sheet forming, fabric thermostamping, filament winding and continuous fiber reinforced profiles are investigated. Part three reviews thermoset processing. A survey of resin transfer molding follows, including vacuum-assisted and compression resin transfer molding. The pultrusion process is then considered, before the book concludes with an investigation into autoclave and out-of-autoclave curing processes in polymer matrix composites. With its distinguished editors and international team of expert contributors, Manufacturing techniques for polymer matrix composites (PMCs) is an essential guide for engineers and scientists working in the field of polymer matrix composites. Provides an authoritative review of the different technologies employed in the manufacture of polymer matrix composites Reviews the manufacturing of short fiber and nanoparticle-based polymer matrix composites, with injection and compression molding examined in depth Examines thermoplastic processing, sheet forming, fabric thermostamping, filament winding and continuous fiber reinforced profiles
Book Synopsis ASC Series on Advances in Composite Materials by : Alfred C. Loos
Download or read book ASC Series on Advances in Composite Materials written by Alfred C. Loos and published by DEStech Publications, Inc. This book was released on 2013 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains 16 original papers on the processing and manufacturing of thermoset and thermoplastic composites. In this book, nine chapters cover modeling and process parameters for many shapes of thermosets using RTM, VARTM and CRTM.
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2670 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computer Methods in Composite Materials VI by : Suong V. Hoa
Download or read book Computer Methods in Composite Materials VI written by Suong V. Hoa and published by . This book was released on 1998 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Computer Methods in Composite Materials conferences bring together both engineers and scientists actively interested in this field. Featuring the proceedings of the sixth meeting, this text covers topics relating to simulation, modelling and experimentation of composite materials.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781723483813 Total Pages :178 pages Book Rating :4.4/5 (838 download)
Book Synopsis Verification of a Three-Dimensional Resin Transfer Molding Process Simulation Model by : National Aeronautics and Space Administration (NASA)
Download or read book Verification of a Three-Dimensional Resin Transfer Molding Process Simulation Model written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-23 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental evidence was obtained to complete the verification of the parameters needed for input to a three-dimensional finite element model simulating the resin flow and cure through an orthotropic fabric preform. The material characterizations completed include resin kinetics and viscosity models, as well as preform permeability and compaction models. The steady-state and advancing front permeability measurement methods are compared. The results indicate that both methods yield similar permeabilities for a plain weave, bi-axial fiberglass fabric. Also, a method to determine principal directions and permeabilities is discussed and results are shown for a multi-axial warp knit preform. The flow of resin through a blade-stiffened preform was modeled and experiments were completed to verify the results. The predicted inlet pressure was approximately 65% of the measured value. A parametric study was performed to explain differences in measured and predicted flow front advancement and inlet pressures. Furthermore, PR-500 epoxy resin/IM7 8HS carbon fabric flat panels were fabricated by the Resin Transfer Molding process. Tests were completed utilizing both perimeter injection and center-port injection as resin inlet boundary conditions. The mold was instrumented with FDEMS sensors, pressure transducers, and thermocouples to monitor the process conditions. Results include a comparison of predicted and measured inlet pressures and flow front position. For the perimeter injection case, the measured inlet pressure and flow front results compared well to the predicted results. The results of the center-port injection case showed that the predicted inlet pressure was approximately 50% of the measured inlet pressure. Also, measured flow front position data did not agree well with the predicted results. Possible reasons for error include fiber deformation at the resin inlet and a lag in FDEMS sensor wet-out due to low mold pressures. Fingerson, John C. and Loos, Alfred C. and ...
Book Synopsis Flow and Rheology in Polymer Composites Manufacturing by : Suresh G. Advani
Download or read book Flow and Rheology in Polymer Composites Manufacturing written by Suresh G. Advani and published by . This book was released on 1994 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deals with the mechanics and modelling aspects of discontinuous and continuous fibre composites, and familiarizes engineers with the critical and fundamental issues of material processing and transport phenomena in polymeric composites and their applications in modelling.
Book Synopsis Heat Transfer in Polymer Composite Materials by : Nicolas Boyard
Download or read book Heat Transfer in Polymer Composite Materials written by Nicolas Boyard and published by John Wiley & Sons. This book was released on 2016-03-28 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses general information, good practices and examples about thermo-physical properties, thermo-kinetic and thermo-mechanical couplings, instrumentation in thermal science, thermal optimization and infrared radiation.
Book Synopsis CT Scan Generated Material Twins for Composites Manufacturing in Industry 4.0 by : Muhammad A. Ali
Download or read book CT Scan Generated Material Twins for Composites Manufacturing in Industry 4.0 written by Muhammad A. Ali and published by Springer Nature. This book was released on 2020-10-06 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights a novel and robust platform in the form of in-situ characterization setup for creating X-ray computed tomography (XCT)-based textile material twins. In this hybrid experimental–numerical platform, XCT images of different complex fibrous reinforcements at different levels of compaction are acquired. The images are converted into computational models for resin flow simulations. The capabilities of this hybrid framework are applied to a variety of reinforcements used in liquid composite molding processes such as 2D, 3D fabrics and dry tapes. This book is a milestone in the development of virtual manufacturing protocols using material twins of textiles, providing a step closer to the digitalization of advanced composites used in manufacturing processes for industry 4.0.
Book Synopsis Mesoscale simulation of the mold filling process of Sheet Molding Compound by : Meyer, Nils
Download or read book Mesoscale simulation of the mold filling process of Sheet Molding Compound written by Meyer, Nils and published by KIT Scientific Publishing. This book was released on 2022-07-12 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sheet Molding Compounds (SMC) are discontinuous fiber reinforced composites that are widely applied due to their ability to realize composite parts with long fibers at low cost. A novel Direct Bundle Simulation (DBS) method is proposed in this work to enable a direct simulation at component scale utilizing the observation that fiber bundles often remain in a bundled configuration during SMC compression molding.
Book Synopsis Liquid Composite Molding by : Richard S. Parnas
Download or read book Liquid Composite Molding written by Richard S. Parnas and published by Carl Hanser Verlag GmbH Co KG. This book was released on 2014-11-06 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid composite molding is a family of versatile methods to manufacture composite materials in the automotive, aerospace, railroad, marine, and defense industries. This well integrated text offers engineering students and industrial practitioners an expertly organized guide to the engineering principles and manufacturing issues critical to successful molding operations. Liquid Composite Molding is an interdisciplinary treatment of transport phenomena in porous media, textile and automation technology to construct the porous reinforcement, and computer aided engineering for design optimization. The included CD ROM contains a permeability database and a finite element flow simulator for process design. Problems at the end of each chapter expand and clarify the most important topics.
Book Synopsis Non-Crimp Fabric Composites by : Stepan V Lomov
Download or read book Non-Crimp Fabric Composites written by Stepan V Lomov and published by Elsevier. This book was released on 2011-04-19 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-crimp fabric (NCF) composites are reinforced with mats of straight (non-crimped) fibres, giving them such advantages as strength, ease of handling and low manufacturing costs. Non-crimp fabric composites provides a comprehensive review of the use of NCF composites, their manufacture and applications in engineering. Part one covers the manufacture of non-crimp fabrics, including also topics such as structural stitching and automated defect analysis. Part two goes on to discuss the manufacture of non-crimp fabric composites, with chapters covering such topics as deformability and permeability of NCF. Part three focuses on the properties of NCF composites, with chapters on stiffness and strength, damage progression and fatigue. Finally, part four covers the applications of NCF composites, including chapters on the aerospace and automotive industries as well as wind turbines and helicopter applications. The book concludes with a discussion of cost analysis of NCF composites in engineering applications. With its distinguished editor and international team of expert contributors, Non-crimp fabric composites is an essential reference for composite manufacturers and structural and mechanical engineers in industries using NCF composites, as well as academics with a research interest in the field. Provides a comprehensive review of the use of NCF composites, their manufacture and applications in engineering Reviews the manufacture of non-crimp fabrics, including also topics such as structural stitching and automated defect analysis Examines the properties of NCF composites considering stiffness and strength, damage progression and fatigue
Book Synopsis Process Modeling in Composites Manufacturing by : Suresh G. Advani
Download or read book Process Modeling in Composites Manufacturing written by Suresh G. Advani and published by CRC Press. This book was released on 2010-07-14 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a wealth of literature on modeling and simulation of polymer composite manufacturing processes. However, existing books neglect to provide a systematic explanation of how to formulate and apply science-based models in polymer composite manufacturing processes. Process Modeling in Composites Manufacturing, Second Edition provides tangible m
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Composites Manufacturing and Process Design by : Philippe Boisse
Download or read book Advances in Composites Manufacturing and Process Design written by Philippe Boisse and published by Woodhead Publishing. This book was released on 2015-07-29 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: The manufacturing processes of composite materials are numerous and often complex. Continuous research into the subject area has made it hugely relevant with new advances enriching our understanding and helping us overcome design and manufacturing challenges. Advances in Composites Manufacturing and Process Design provides comprehensive coverage of all processing techniques in the field with a strong emphasis on recent advances, modeling and simulation of the design process. Part One reviews the advances in composite manufacturing processes and includes detailed coverage of braiding, knitting, weaving, fibre placement, draping, machining and drilling, and 3D composite processes. There are also highly informative chapters on thermoplastic and ceramic composite manufacturing processes, and repairing composites. The mechanical behaviour of reinforcements and the numerical simulation of composite manufacturing processes are examined in Part Two. Chapters examine the properties and behaviour of textile reinforcements and resins. The final chapters of the book investigate finite element analysis of composite forming, numerical simulation of flow processes, pultrusion processes and modeling of chemical vapour infiltration processes. Outlines the advances in the different methods of composite manufacturing processes Provides extensive information on the thermo-mechanical behavior of reinforcements and composite prepregs Reviews numerical simulations of forming and flow processes, as well as pultrusion processes and modeling chemical vapor infiltration
