Download or read book Low Cost Forming Influence on Reinforced Thermoplastic Mechanical Properties written by Donald J. Hoffstedt and published by . This book was released on 1981 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes a study of the influence of low-cost forming methods on the mechanical properties of reinforced thermoplastics. Two tasks comprise the main body of the study; one establishes a relationship between processing parameters (time/pressure/temp-variables) and selected material properties (modulus, flex strength, inter-laminar shear strength); the other determines the effects (measured by the change in material flexural properties) of simulated R & M solvent attack on painted and unpainted laminates. Two secondary tasks complete the study: a review of the available literature on industrial and government-sponsored reinforced thermoplastic materials, material properties, and fabrication methods. The other task required the manufacture of four, 16 in x 20 in, five ply Kevlar 49 style 285 fabric, polysulfane, laminated panels for AMMRC testing. Test data (with respect to processing parameters) indicates a decrease in flexural strength readings coming at the 450 F thermoforming temperature. Modulus values are highest in the 500 F - 550 F thermoforming temperature range. Interlaminar shear strength values also tend to decrease as thermoforming temperature increases. Regarding solvent attack, test data indicates generally higher flexural strength with polyphenylsulfone than with polysulfone sandwich beams. Conversely higher 'EI' values occurred in the polysulfone than in the polyphenylsulfone sandwich beams.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1981 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mechanical Properties of Reinforced Thermoplastics written by D.W. Clegg and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reinforcement of materials such as mud and clay by hair, straw and vegetable fibres has been long established in man's history, enabling him to improve his buildings and extend his engineering abilities. With the advent of modern synthetic polymers it was rapidly realised that the addition of fibres, flakes and particulate materials to polymer matrices could improve mechanical properties significantly. Fibres and flakes are the most effective and have enabled several polymers with limited properties to compete with long-established metallic materials, reSUlting in cost, weight and processing economies. This is increasingly apparent in the selection of materials for aerospace and road vehicle applications as well as in a multitude of domestic products. Reinforced plastics, both thermosets and thermoplastics, are used in increasingly harsh environments involving elevated temperatures and aggressive conditions. Fibre reinforcement of thermoplastics dominates, and a pattern of increasing replacement of fibre reinforced thermosets by reinforced thermoplastics is emerging. This trend is encouraged by the development of continuous fibre reinforced grades of the newer high-temperature engineering thermoplastics such as polyether ether ketone. The first part of this book reviews the mechanical properties and theories of short fibre reinforcement. The principal reinforcements are reviewed and a separate chapter is devoted to the uses of natural fibres as reinforcements for thermoplastics. This is an interesting and commercially important area, especially for Third World countries v vi Preface where these fibres are grown but are facing severe competition from synthetic fibres in traditional applications such as ropes and matting.
Download or read book Reinforced Thermoplastics written by P. G. Kelleher and published by iSmithers Rapra Publishing. This book was released on 1993 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report covers semi and non-crystalline thermoplastics, polymer blends and various classes of reinforcing fibres, and the properties which determine their suitability for specific applications. A detailed discussion of the injection moulding of reinforced thermoplastics includes the effect of processing on fibre distribution and breakage. An additional indexed section containing several hundred abstracts from the Rapra Polymer Library database provides useful references for further reading.
Download or read book Fundamentals of Machine Component Design written by Robert C. Juvinall and published by John Wiley & Sons. This book was released on 2020-06-23 with total page 805 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Machine Component Design presents a thorough introduction to the concepts and methods essential to mechanical engineering design, analysis, and application. In-depth coverage of major topics, including free body diagrams, force flow concepts, failure theories, and fatigue design, are coupled with specific applications to bearings, springs, brakes, clutches, fasteners, and more for a real-world functional body of knowledge. Critical thinking and problem-solving skills are strengthened through a graphical procedural framework, enabling the effective identification of problems and clear presentation of solutions. Solidly focused on practical applications of fundamental theory, this text helps students develop the ability to conceptualize designs, interpret test results, and facilitate improvement. Clear presentation reinforces central ideas with multiple case studies, in-class exercises, homework problems, computer software data sets, and access to supplemental internet resources, while appendices provide extensive reference material on processing methods, joinability, failure modes, and material properties to aid student comprehension and encourage self-study.
Download or read book Encyclopedia of Renewable and Sustainable Materials written by and published by Elsevier. This book was released on 2020-01-09 with total page 4238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Encyclopedia of Renewable and Sustainable Materials, Five Volume Set provides a comprehensive overview, covering research and development on all aspects of renewable, recyclable and sustainable materials. The use of renewable and sustainable materials in building construction, the automotive sector, energy, textiles and others can create markets for agricultural products and additional revenue streams for farmers, as well as significantly reduce carbon dioxide (CO2) emissions, manufacturing energy requirements, manufacturing costs and waste. This book provides researchers, students and professionals in materials science and engineering with tactics and information as they face increasingly complex challenges around the development, selection and use of construction and manufacturing materials. Covers a broad range of topics not available elsewhere in one resource Arranged thematically for ease of navigation Discusses key features on processing, use, application and the environmental benefits of renewable and sustainable materials Contains a special focus on sustainability that will lead to the reduction of carbon emissions and enhance protection of the natural environment with regard to sustainable materials
Download or read book Thermoforming written by Geza Gruenwald and published by CRC Press. This book was released on 1998-05-08 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: FROM THE FOREWORD Dr. Gruenwald has indicated the desirable properties of polymerics for differing applications; thus, his text is especially useful for polymer chemists who must "tailor" plastic materials for specific groups of applications. Engineers in extruding and calendering film and sheet will benefit from the intimate relationships elucidated between processing parameters imposed upon stocks employed in thermoforming and the products thereof. Mold designers are provided with a complete guide that will enable them to avoid the less obvious pitfalls and wasted effort so often experienced in the evolution of molds for (especially) complex parts.. Quite likely, Dr. Gruenwald's suggestions willl lead to considerable benefits to those who read and practice by this remarkable exposition of thermoforming technology. Robert K. Jordan Director-Metalliding Institute, Director-Engineering Research Institute, Scientist in Residence, Gannon University
Download or read book Polypropylene Handbook written by József Karger-Kocsis and published by Springer. This book was released on 2019-03-18 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book On the anisotropic plastic behaviour of short fibre reinforced thermoplastics and its description by phenomenological material modelling written by Felix Dillenberger and published by Springer Nature. This book was released on 2019-10-21 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: A requirement for the safe design of thermoplastic parts is the ability to precisely predict mechanical behaviour by finite element simulations. Typical examples include the engineering of relevant components in automotive applications. For this purpose adequate material models are essential. In this context, the present work introduces a material modelling approach for short fibre reinforced thermoplastics (SFRTPs). SFRTP parts are processed cost-effectively by injection moulding and show a varying degree of anisotropy due to the locally inhomogeneous fibre distributions that arise during the moulding process. The presented material model considers linear-elastic behaviour and non-linear orthotropic stress-state dependent viscoplastic deformation for arbitrary fibre distributions. The constitutive equations are verified with the experiments of a PPGF30 material regarding different stress-states and orientations.
Download or read book Fracture Mechanics Applications written by Hayri Baytan Ozmen and published by BoD – Books on Demand. This book was released on 2020-09-23 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fracture mechanics deals with the cracking behavior of materials, and cracking defines the limit state for many components of engineering systems. Fracture mechanics principles can help us design more robust components to ensure safer airplanes, space shuttles, ships, cranes, buildings, bridges, and mechanical systems. Written by researchers and experts of the field, this book examines recent progress in fracture mechanics applications. Chapters cover such topics as rupture theory, the J-integral, knitted fabric-reinforced polymer composites, and artificial neural networks to detect structural damage, among others. This volume is designed for graduate students, researchers, and practicing engineers.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1982 with total page 1114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ICREEM 2022 written by Faiz Ahmad and published by Springer Nature. This book was released on with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biopolymers and Biomaterials written by Aneesa Padinjakkara and published by CRC Press. This book was released on 2018-12-07 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biopolymers are attracting immense attention of late because of their diverse applications that can address growing environmental concerns and energy demands. The development of various biomaterials creates significant advancements in the medical field as well, and many biopolymers are used for the fabrication of biomaterials. Together, biopolymers and biomaterials create great potential for new materials, applications, and uses. This new volume, Biopolymers and Biomaterials, covers the science and application of biopolymers and biomaterials. It presents an array of different studies on biopolymers and biomaterials, along with their results, interpretation, and the conclusions arrived at through investigations. It includes biopolymer synthesis, their characterizations, and their potential applications. The book begins with an explanation of the different biopolymers used in the textile industry, their advantages and disadvantages, and their applications.
Download or read book Flexible Towpregs and Their Thermoplastic Composites written by R. Alagirusamy and published by CRC Press. This book was released on 2022-07-15 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermoplastic matrix composites have attracted much attention in the composites industry due to their easy processibility and improved impact properties. Although there are many books on thermoplastic composites available, none emphasize flexible towpregs and their composite properties. This book discusses various methods of manufacturing flexible towpregs, their properties, their textile preforming behavior, the properties of textile preform, and the properties of final composites. FEATURES Gives readers a complete view of composite manufacturing Offers details on flexible prepregs that other books overlook, such as manufacturing methods, influence of processing parameters, and properties Includes explanations that cover all steps of manufacturing with examples Features case studies and homework exercises for all chapters to reinforce understanding Provides technological information, discussion, and analysis of problems related to all types of flexible towpregs, such as commingling, electrostatic powder coating, wrapped hybrid yarns, micro-braided hybrid yarns, core-spun hybrid yarns, and others This book is aimed at readers working with composite materials, industrial textiles, and related areas to understand the significance of thermoplastic composites made through textile performance of flexible towpregs.
Download or read book Functional Fillers for Plastics written by Marino Xanthos and published by John Wiley & Sons. This book was released on 2010-01-07 with total page 531 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive and up-to-date overview of the major mineral and organic fillers for plastics, their production, structure and properties, as well as their applications in terms of primary and secondary functions. Edited and co-authored by Professor Marino Xanthos with contributions by international experts from industry and academia, this book presents methods of mixing/incorporation technologies, surface treatments and modifications for enhanced functionality, an analysis of parameters affecting filler performance and a presentation of current and emerging applications. Additionally, the novel classification according to modification of specific polymer properties rather than filler chemical composition provides a better understanding of the relationships between processing, structure and properties of products containing functional fillers and the identification of new markets and applications. For engineers, scientists and technologists involved in the important sector of polymer composites.
Download or read book Advances in Design Simulation and Manufacturing written by Vitalii Ivanov and published by Springer. This book was released on 2018-06-15 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reports on topics at the interface between manufacturing, mechanical and chemical engineering. It gives a special emphasis to CAD/CAE systems, information management systems, advanced numerical simulation methods and computational modeling techniques, and their use in product design, industrial process optimization and in the study of the properties of solids, structures and fluids. Control theory, ICT for engineering education as well as ecological design and food technologies are also among the topics discussed in the book. Based on the International Conference on Design, Simulation, Manufacturing: The Innovation Exchange (DSMIE-2018), held on June 12-15, 2018, in Sumy, Ukraine, the book provides academics and professionals with a timely overview and extensive information on trends and technologies behind current and future developments of Industry 4.0, innovative design and renewable energy generation.
