Download or read book Spinning and Drawing Properties of Ultrahigh molecular weight Polyethylene Fibers Prepared at Varying Concentrations and Temperatures written by Kan-nan Chen and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applications of Computation in Mechanical Engineering written by Dean Vučinić and published by Springer Nature. This book was released on 2022-11-28 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes select peer reviewed proceedings from the 3rd International Conference on Computing in Mechanical Engineering (ICCME 2021) discussing the application of computer based simulations in mechanical and allied engineering disciplines. The book shows advanced applications of numerical techniques in different areas of mechanical engineering. The topics covered include numerical modelling, simulations and optimization best practices in various challenging domains like fluid dynamics, combustion in IC engines, heat transfer analysis, vibration damping and control, chemical and process engineering, mechanics of machining, nano fluidics and material science. This book will be a useful resource to students, researchers and engineers working on multidisciplinary engineering problems, specially focusing on mechanical engineering and applied mathematics issues, with hope that it will impact future developments in engineering disciplines and motivate advancements and innovations in technical sciences.

Download or read book Processing Structure Property Relationships in Ultra High Molecular Weight Polyethylene Fibers written by Christopher K. Henry and published by . This book was released on 2021 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lightweight and robust materials are of interest for many applications. Ultra-high molecular weight polyethylene (UHMWPE) fibers are currently capable of tensile properties comparable to common industrial materials while also providing a low density. A few manufacturers have begun to utilize these materials in various applications, yet fundamental questions regarding the development and cause of the remarkable properties remain unanswered. In this study, the processing and structure of UHMWPE fibers from all stages of fabrication were analyzed to establish relationships with mechanical performance. The goal of this study was to determine which parameters were most critical in the development of the tensile response of the fiber, and then, if possible, how the processing could be altered to generate improved properties. A gel-spinning apparatus was developed to investigate the fiber spinning process. It was found that the strain rate during the spinning process, normalized by the relaxation time and represented via the Weissenberg number (Wi), correlates to the crystalline structure of the fiber, and that velocity ratio (the common method of characterization in these processes) is insufficient in classifying the structure of the spun fiber. A modified extensional rheometer was used to investigate the post drawing of the characterized fibers. Both draw temperature, draw velocity, and starting crystalline structure were studied. Draw velocity and temperature were found to control the sizes observed in the drawn structures. The initial morphology, when drawn at identical velocity and temperature, provides relatively constant structural sizes, but causes changes in the proportions of the structural features and the percent crystallinity. With this data set, we conclude that the crystalline structure is unrelated to mechanical performance. However the intermediate Wi fiber exhibits increased tensile strength and stiffness compared to the other spun fibers. This improved performance is attributed to differences in the initial crystallinity, or distribution of the different crystalline morphologies, of the samples. Differences in starting crystallinity are thought to alter the necessary amount of drawing required to reach the same mechanical response. While draw temperature and velocity do not directly improve the ultimate tensile properties, they do play a role in maximizing the possible deformation. Failure during drawing is observed to occur at a constant stress ceiling, which is independent of all observed parameters. This critical stress indicates a failure defect size of 0.93 nm through Griffith's Theory analysis. When maximum draw ratio is observed as a function of initial fiber diameter it is found that thinner fibers result in higher ultimate draw ratios. Controlling initial diameter, and to a lesser extent temperature and velocity, adjusts the strain at which this critical stress is reached providing higher draw ratios and ultimately higher crystallinity. Crystallinity is further found to be the ultimate determining factor in tensile property behavior, as seen through Fusion theory.

Download or read book High Performance Polymer Fibres written by P. R. Lewis and published by iSmithers Rapra Publishing. This book was released on 1999 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr. Lewis reviews the theory development and uses of high performance polymer fibres. He describes their manufacture, and compares the properties of different polymers. Applications of different materials are described, together with their advantages and limitations. His review is complemented by the addition of a fully indexed set of references and abstracts selected from the Polymer Library database. These provide further reading on the technology and uses of high performance polymers.

Download or read book Biodegradable and Sustainable Fibres written by Richard Blackburn and published by Taylor & Francis US. This book was released on 2005-11-30 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: With increasing concerns regarding the effect the textile industry is having on the environment, more and more textile researchers, producers and manufacturers are looking to biodegradable and sustainable fibres as an effective way of reducing the impact textiles have on the environment. The emphasis in Biodegradable and sustainable fibres is on textiles that are beneficial by their biodegradation and come from sustainable sources. Biodegradable and sustainable fibres opens with a discussion of microbial processes in fibre degradation. It then moves on to discuss the major fibre types, including bast fibres, alginates, cellulose and speciality biodegradable fibres, such as lyocell, poly(lactic acid) and poly(hydroxyalkanoate)s. The development of synthetic silks is covered along with biodegradable natural fibre composites, nonwovens, and geotextiles. The final chapter looks at the history and future of soya bean protein fibres. Biodegradable and sustainable fibres is a comprehensive monograph providing essential reference for anyone interested in the area and environmental issues relating to textiles including fibre and textile scientists and students, textile technologists, manufacturers, and forensic specialists in industry and academia. Indispensable new book on this hot topic Discusses the major fibre types, inlcuding bast fibres Looks at biodegradable and sustainable fibres as an effective way of reducing the harm disposed textiles have on the environment

Download or read book High Performance and Specialty Fibers written by Japan The Society of Fiber Science and Techno and published by Springer. This book was released on 2016-08-16 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the key technologies and characteristics of the modern man-made specialty fibers mainly developed in Japan. Since the production of many low-cost man-made fibers shifted to China and other Asian countries, Japanese companies have focused on production of high-quality, high-performance super fibers as well as highly functionalized fibers so-called ‘Shin-gosen’. ZylonTM and DyneemaTM manufactured by Toyobo, TechnoraTM produced by Teijin, and VectranTM developed by Kuraray are those examples of super fibers. Carbon fibers ToraycaTM from Toray have occupied the most advanced high-performance application area. Various types of polyester fibers having design-shaped cross-sections and special fiber morphologies and those showing specific physico-chemical properties have also been developed to acquire a high-value textile market of the world. This book describes how these high-tech fibers have been developed and what aspects are the most important in each fiber based on its structure-property relationship. Famous specialists both in industry and academia are responsible for the contents, explaining the design concepts and the special technologies for the production of these special fibers. For university teachers and students, this volume is an excellent textbook that elucidates the basic concepts of modern fibers. At the same time, researchers, both in academia and industry, will find a comprehensive overview of recent man-made fibers. This publication, presenting the most easily understandable general survey of specialty man-made fibers to date, is dedicated to the 70th-anniversary of the Society of Fiber Science and Technology, Japan.

Download or read book Advanced Fiber Spinning Technology written by T. Nakajima and published by Woodhead Publishing. This book was released on 1994-01-15 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some of the most interesting developments of the last few decades in the field of fiber production have been the result of intensive study in Japanese industry and research institutes. This book was originally published in Japanese by the Society of Fiber Science and Technology, Japan, in order to present a thorough scientific and technological review of advances in fiber production, and is now published in English. In addition to providing an extensive review of recent breakthroughs in fiber spinning technology, this popular book illustrates how R&D can pay off in terms of commercial success in the textiles marketplace.

Download or read book Manufactured Fibre Technology written by V.B. Gupta and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manufactured Fibre Technology provides an accessible and comprehensive treatment of the chemical, physical and mechanical processes involved in the production of all important commodity manufactured fibres and most of the industrial fibres. The emphasis is on the fundamental principles and industrial aspects of production. Latest developments in manufactured fibres in terms of manufacturing processes, characteristics and their applications are also covered. Manufactured Fibre Technology is designed around twenty chapters with a balance of basic principles and production of specific fibre types. Newer and industrially relevant areas such as high speed spinning, production of speciality fibres (including microfibres), computer simulation of spinning, high performance fibres, spun-bonding and melt-blowing, and re-use of fibre waste are included. The structure, property and application areas of each fibre type are also discussed, thus providing a broad understanding of the subject. In addition, various aspects related to the testing and characterisation of fibres and polymers are reviewed. This book is an invaluable resource to students, lecturers, industrial technologists and researchers in this subject area.

Download or read book Ultra high Modulus Polymers written by A. Ciferri and published by . This book was released on 1979 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to the Mechanical Properties of Solid Polymers written by I. M. Ward and published by John Wiley & Sons. This book was released on 2005-08-19 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive introduction to the mechanical behaviour of solid polymers. Extensively revised and updated throughout, the second edition now includes new material on mechanical relaxations and anisotropy, composites modelling, non-linear viscoelasticity, yield behaviour and fracture of tough polymers. The accessible approach of the book has been retained with each chapter designed to be self contained and the theory and applications of the subject carefully introduced where appropriate. The latest developments in the field are included alongside worked examples, mathematical appendices and an extensive reference. Fully revised and updated throughout to include all the latest developments in the field Worked examples at the end of the chapter An invaluable resource for students of materials science, chemistry, physics or engineering studying polymer science

Download or read book UHMWPE Biomaterials Handbook written by Steven M. Kurtz and published by Academic Press. This book was released on 2009-04-27 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: UHMWPE Biomaterials Handbook describes the science, development, properties and application of of ultra-high molecular weight polyethylene (UHMWPE) used in artificial joints. This material is currently used in 1.4 million patients around the world every year for use in the hip, knee, upper extremities, and spine. Since the publication of the 1st edition there have been major advances in the development and clinical adoption of highly crosslinked UHMWPE for hip and knee replacement. There has also been a major international effort to introduce Vitamin E stabilized UHMWPE for patients. The accumulated knowledge on these two classes of materials are a key feature of the 2nd edition, along with an additional 19 additional chapters providing coverage of the key engineering aspects (biomechanical and materials science) and clinical/biological performance of UHMWPE, providing a more complete reference for industrial and academic materials specialists, and for surgeons and clinicians who require an understanding of the biomaterials properties of UHMWPE to work successfully on patient applications. - The UHMWPE Handbook is the comprehensive reference for professionals, researchers, and clinicians working with biomaterials technologies for joint replacement - New to this edition: 19 new chapters keep readers up to date with this fast moving topic, including a new section on UHMWPE biomaterials; highly crosslinked UHMWPE for hip and knee replacement; Vitamin E stabilized UHMWPE for patients; clinical performance, tribology an biologic interaction of UHMWPE - State-of-the-art coverage of UHMWPE technology, orthopedic applications, biomaterial characterisation and engineering aspects from recognised leaders in the field

Download or read book High speed Spinning of Ultra high Molecular Weight Polyethylene Fibres written by Mees Roukema and published by . This book was released on 1991 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineered Materials Abstracts written by and published by . This book was released on 1993-10 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Developments in Oriented Polymers 2 written by Ian M. Ward and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last four years since the publication of the first of this series have seen further striking developments in both the science and technology of oriented polymers. In particular, polymers possessing very high degrees of molecular orientation are now quite commonplace, and this is reflected by the inclusion of five chapters dealing with ultra-high modulus polyethylene fibres, oriented liquid crystalline polymers (both lyotropics and thermo tropics) and polydiacetylene single crystal fibres. At the same time there is continuing interest in the structure and properties of less highly oriented polymers and in the mechanisms of deformation in polymers. It is therefore good to have these themes represented also. I should like to thank the contributors for adhering to a rather tight time schedule, and the publishers for their cooperation, so that this book can provide up-to-date reviews of the state of the art in a rapidly moving area of polymer science. I. M. WARD v CONTENTS Preface.... . . . .. . . . . .. ... . . . . . . . . . .. . . .. . . . . . . ... ... v List of Contributors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IX 1. Polymer Single Crystal Fibres ........................ .

Download or read book Textile Technology Digest written by and published by . This book was released on 1998 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book High Performance Structural Fibers for Advanced Polymer Matrix Composites written by National Research Council and published by National Academies Press. This book was released on 2005-05-09 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Military use of advanced polymer matrix composites (PMC)â€"consisting of a resin matrix reinforced by high-performance carbon or organic fibersâ€"while extensive, accounts for less that 10 percent of the domestic market. Nevertheless, advanced composites are expected to play an even greater role in future military systems, and DOD will continue to require access to reliable sources of affordable, high-performance fibers including commercial materials and manufacturing processes. As a result of these forecasts, DOD requested the NRC to assess the challenges and opportunities associated with advanced PMCs with emphasis on high-performance fibers. This report provides an assessment of fiber technology and industries, a discussion of R&D opportunities for DOD, and recommendations about accelerating technology transition, reducing costs, and improving understanding of design methodology and promising technologies.

Download or read book Physics Briefs written by and published by . This book was released on 1986 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: