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Author: Bilal Ahmad
Publisher:
ISBN: 9783961821082
Category :
Languages : en
Pages :
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Book Description
Author: Bilal Ahmad
Publisher:
ISBN: 9783961821082
Category :
Languages : en
Pages :
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Book Description
Author: Katia Mocellin
Publisher: Springer Nature
ISBN: 3031420934
Category : Technology & Engineering
Languages : en
Pages : 788
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Book Description
This volume highlights the latest advances, innovations, and applications in the field of metal forming, as presented by leading international researchers and engineers at the 14th International Conference on Technology of Plasticity (ICTP), held in Mandelieu-La Napoule, France on September 24-29, 2023. It covers a diverse range of topics such as manufacturing processes & equipment, materials behavior and characterization, microstructure design by forming, surfaces & interfaces, control & optimization, green / sustainable metal forming technologies, digitalization & AI in metal forming, multi-material processing, agile / flexible metal forming processes, forming of non-metallic materials, micro-forming and luxury applications. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster multidisciplinary collaboration among different specialists.
Author: Weitao Yi
Publisher:
ISBN:
Category :
Languages : en
Pages : 202
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Book Description
A micromechanical model is developed for laminated unidirectional fiber reinforced composite materials and implemented in the explicit finite element method. The objective of this study is to get an accurate and simple micro-model, which can be used in the displacement-based nonlinear explicit finite element code LS-DYNA. Within the model a representative volume cell is assumed. The micromechanical model implemented in the explicit finite element code can be used for simlulating the behavior of composite structures under various loads such as impact and crash. The stress-strain relation for the micro-model is derived for shell element and solid element. Micro Failure Criterion (MFC) is presented for each material constituent and failure mode. The implemented model is validated through several test examples. As a demonstration case of the stability of the developed micro-model, a finite element model of Graphite/Epoxy tube structure is developed and simulated under axial crash. A good correlation is observed between the predicted and the experiment results in the published literature. Base on the micromechanical model described above, rate dependent inelastic constitutive equations are implemented to predict the strain rate dependent deformation response of a composite material. Another micromechanical model for woven fabric composite with nonlinear stress-strain relation is also developed to simulate crashworthiness of woven composite.
Author: Antonio J.M. Ferreira
Publisher: Società Editrice Esculapio
ISBN: 8874889771
Category : Technology & Engineering
Languages : en
Pages : 212
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Book Description
Nowadays, it is quite easy to see various applications of fibrous composites, functionally graded materials, laminated composite, nano-structured reinforcement, morphing composites, in many engineering fields, such as aerospace, mechanical, naval and civil engineering. The increase in the use of composite structures in different engineering practices justify the present international meeting where researches from every part of the globe can share and discuss the recent advancements regarding the use of standard structural components within advanced applications such as buckling, vibrations, repair, reinforcements, concrete, composite laminated materials and more recent metamaterials. For this reason, the establishment of this 19th edition of International Conference on Composite Structures has appeared appropriate to continue what has been begun during the previous editions. ICCS wants to be an occasion for many researchers from each part of the globe to meet and discuss about the recent advancements regarding the use of composite structures, sandwich panels, nanotechnology, bio-composites, delamination and fracture, experimental methods, manufacturing and other countless topics that have filled many sessions during this conference. As a proof of this event, which has taken place in Porto (Portugal), selected plenary and keynote lectures have been collected in the present book.
Author: József Karger-Kocsis
Publisher: Springer
ISBN: 3030129039
Category : Technology & Engineering
Languages : en
Pages : 648
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Book Description
This book extensively reviews Polypropylene (PP), the second most widely produced thermoplastic material, having been produced for over 60 years. Its synthesis, processing and application are still accompanied by vigorous R&D developments because the properties of PP are at the borderline between those of commodity and engineering thermoplastics. Readers are introduced to various tacticities and polymorphs of PP, and their effects on structural properties. Further, the book addresses the control of optical properties using nucleants, provides strategies for overcoming the limited cold/impact resistance of PP, examines in detail the effects of recycling, and presents guidelines for the property modification of PPs through foaming, filling and reinforcing with respect to target applications. Special attention is paid to descriptions and models of properties as a function of morphological variables. Last but not least, the book suggests potential practical applications of PP-based systems, especially in the packaging, appliances, building/construction, textile and automotive sectors. Each chapter, written by internationally respected scientists, reflects the current state-of-art in the respective field and offers a vital source of information for students, researchers and engineers interested in the morphology, properties, testing and modeling of PP and PP-based systems. The content is indispensable to the appropriate application of PPs and related composites.
Author: Polona Dobnik Dubrovski
Publisher: IntechOpen
ISBN: 9789533071947
Category : Technology & Engineering
Languages : en
Pages : 436
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Book Description
The main goal in preparing this book was to publish contemporary concepts, new discoveries and innovative ideas in the field of woven fabric engineering, predominantly for the technical applications, as well as in the field of production engineering and to stress some problems connected with the use of woven fabrics in composites. The advantage of the book Woven Fabric Engineering is its open access fully searchable by anyone anywhere, and in this way it provides the forum for dissemination and exchange of the latest scientific information on theoretical as well as applied areas of knowledge in the field of woven fabric engineering. It is strongly recommended for all those who are connected with woven fabrics, for industrial engineers, researchers and graduate students.
Author: Richard Day
Publisher: Lulu.com
ISBN: 0946881804
Category : Technology & Engineering
Languages : en
Pages : 91
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Book Description
Proceedings of the Third International Conference on Advanced Composite Materials and Technologies for Aerospace Applications held on May 13-16, 2013, Wrexham, North Wales, United Kingdom
Author: Han-Yong Jeon
Publisher: BoD – Books on Demand
ISBN: 9535122711
Category : Technology & Engineering
Languages : en
Pages : 328
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Book Description
Non-woven Fabrics is differentiated text which covers overall stream from raw fibers to final products and includes features of manufacturing and finish process with specialized application end use. Application range of non-woven fabrics is extended to all the industrial fields needless to say apparel, such as ICT (information and communication technology), bio- and medicals, automobiles, architectures, construction and environmental. Every chapter is related to the important and convergent fields with the technical application purpose from downstream to upstream fields. Also, applicability of non-woven fabrics is introduced to be based on the structural analysis of dimensional concept and various non-woven fabrics as a state-of-art embedded convergent material are emphasized in all industry fields by using nanofibers and carbon fibers.
Author: Nageswara Rao Janapala
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Fiber reinforced composites currently being used in myriad applications including aerospace, defense and wind industries due to their light weight, higher specific strength and stiffness, compared to traditional metallic structures. For crashworthiness applications, advanced textile composites such as fabrics and braids, are showing superior performance over traditional tape laminated composites structures. Kevlar fabric composites, in particular, are offering a great potential as the next generation energy absorbing material for the rotorcraft applications. Unfortunately, none of the existing material models can predict the behavior of Kevlar fabric composites for the crashworthiness applications. The prime objective of this investigation is to develop a computationally efficient and robust material model based on a unified unit-cell approach to simulate the crush response of tubular and honeycomb structures made of Kevlar fabric composites under quasi-static and dynamic loading conditions. Tests are conducted at various levels to understand the constitutive behavior of Kevlar fabric composites. Based on experimental observations, a physics based material model is developed. This material model is then implemented in commercial finite element software such as LS-DYNA and ABAQUS as a User Material (UMAT) Routine. The material model is built by considering majority of length scales in the composites: Kevlar composite tows at the meso-scale, a fabric unit cell at macro-scale and overall structural level. The material model identifies a smallest repetitive unit (i.e. unit-cell) within the composite material. The tow geometry within the unit-cell is represented using a simplified three-dimensional description. An elastic-plastic constitutive law is developed to simulate the behavior of Kevlar composite tows. Efficient homogenization scheme along with appropriate failure criteria is implemented to calculate the effective quantities such as stiffness and stress and predict the response of the unit-cell. Coupon tests are conducted on unidirectional Kevlar and plain woven Kevlar fabric flat plaques. The unidirectional coupon tests are conducted to characterize the material properties such as stiffness, strength and plastic parameters necessary as input to the material model. The plain woven fabric coupon tests are conducted to verify the initial stiffness, strength and damage progression predictions of the model at the ply-level. Several tubes with square and circular cross-section are crushed quasi-statically using both flat-plate and plug-type crush initiators. During crushing, Kevlar fabric composite tubes buckled locally and failed progressively by forming folds similar to aluminum tubes. Test results show that the failure mode and overall energy absorption is not affected significantly by the change in fabric angle or the method of crushing. Dynamic crush tests on Kevlar fabric honeycomb structures also exhibited global folding failure mechanism with very little fiber fracture. During crushing, honeycombs typically reach a peak load and then crush at constant, sustained load which is a characteristic of an ideal crash energy behavior. The material module is verified by carrying out simulations at different levels. Coupon test data is initially validated for both the initial stiffness and the strength predictions. Tubular and honeycomb crush data is validated for the deformation behavior, the failure mechanism and the crash energy absorption characteristics. Strong correlation between simulation and experiments suggests that the model can be used as state-of-the-art computational tool for predicting the crushing behavior of tubular and honeycomb structures made of Kevlar fabric composites.
Author: A C Long
Publisher: CRC Press
ISBN: 9780849325939
Category : Technology & Engineering
Languages : en
Pages : 504
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Book Description
Textile composites encompass a rather narrow range of materials, based on three-dimensional reinforcements produced using specialist equipment. This book describes the design, manufacture and applications of textile composites. The intention is to describe the broad range of polymer composite materials with textile reinforcements, from woven and non-crimp commodity fabrics to 3-D textiles and their applications. The book gives particular attention to the modelling of textile structures, composites manufacturing methods, and subsequent component performance. This practical book is an invaluable guide for manufacturers of polymer composite components, end-users and designers, structural materials researchers, and textile manufacturers involved in the development of new products with textile composites.
