Failure of Plastics and Rubber Products - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Failure of Plastics and Rubber Products write by D. C. Wright. This book was released on 2001. Failure of Plastics and Rubber Products available in PDF, EPUB and Kindle. This book is based on the more than 30 years experience of Dr. Wright in researching the circumstances and consequences of failure in plastics and rubber products. It delves into the reasons why plastics fail, but does not stop there. This book is essential reading for almost every engineer, technician, researcher, and designer because it also outlines the practical application of plastic materials and exposes the potential problems inherent with plastics and rubbers. Case studies throughout the text describe the circumstances of specific failures, the consequences of the failure, and lessons learned. Most of the failed products are familiar and many color photographs help illustrate. Of all the variables within the process of designing and manufacturing with plastics, one is common... failure. Use this book as a preventive measure and reduce risks in material selection and processing. This book is based on research conducted or supervised by Dr. Wright during his three decades at Rapra Technology. Dr. Wright was involved in the diagnosis of over 5,000 product failures and has published 3 books and over 90 technical papers. He has specialized in failure mechanisms and critical issues of material durability, such as creep, fatigue and environmental stress cracking.
Failure of Plastics and Rubber Products
Failure of Plastics and Rubber Products - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Failure of Plastics and Rubber Products write by D. Wright. This book was released on 2001-06. Failure of Plastics and Rubber Products available in PDF, EPUB and Kindle. Plastics and rubbers together make up the most adaptable and varied class of materials available to product designers. They may be transparent or opaque, rigid or flexible, lightweight, insulating, and weatherproof. They are used in almost every industry, and in every part of the home. Applications range from the humble hot water bottle to the sheathing on a high voltage cable, and from a simple scrubbing brush to a tank for storing hydrochloric acid. Products may be disposable (e.g. packaging goods) or intended to last for decades, such as a buried sewage pipe. However, it is this very diversity which makes materials selection so difficult, and appropriate design so important. Indeed the one thing that all these particular products have in common is their presence in this book of failures. Failures due to degradation may result from exposure to the weather or an aggressive operating environment. Alternatively they may be caused by the introduction of an external agent unforeseen by the product designer. They may be rapid or very slow, and they may result from a combination of factors. In this book Dr. Wright describes the following mechanisms of polymer degradation, and then illustrates each failure mechanism with a number of case studies: Thermo-oxidation, Photo-oxidation, Degradation due to ionising radiation, Chemical attack, Environmental stress cracking, Other miscellaneous effects, including treeing, electrochemical degradation and biodegradation. Many of the case studies are based on Dr. Wrights own experiences whilst working at Rapra. In each case he describes the circumstances of the failure, and discusses both the consequences of the failure and the lessons that may be learned from it. Most of the failed products are familiar to us all, and his style is both readable and informative. Photographs are included where available. The book will be essential reading for designers, engineers, product specifiers and forensic engineers. Materials suppliers and processors will also benefit from the pragmatic analysis and advice it contains. It will also be of value to all students of polymer science and technology, providing an essential insight into the practical application of plastics and rubbers and the potential problems. Finally, it will be of interest to a much broader readership, including anyone who ever wondered why things break, and it should become a standard reference work in all technical libraries. This book was written with the support of the UK Department of Trade and Industry. It is intended to raise awareness of the causes and consequences of polymer product failures, in order to reduce the future incidences of such failures, and their considerable costs to industry
Rubber Product Failure
Rubber Product Failure - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Rubber Product Failure write by Roger P. Brown. This book was released on 2002. Rubber Product Failure available in PDF, EPUB and Kindle. Rubber components are used in many demanding applications, from tyres and seals to gloves and medical devices, and failure can be catastrophic. This review of Rubber Product Failure outlines and illustrates the common causes of failure, while addressing ways of avoiding it. There has been increasing pressure to improve performance so that rubbers can be used at higher temperatures and in harsher environments. For example, the under-the-bonnet temperature has increased in some vehicles and new medical devices require longer lifetimes in potentially degrading biological fluids. The expectations of tyre performance in particular are increasing, and retreads have been in the spotlight for failures. The definition of failure depends on the application. For example, a racing car engine seal that lasts for one race may be acceptable, but in a normal car a life span of 10 years is more reasonable. If appearance is critical as in surface coatings and paints, then discolouration is failure, whilst in seals leakage is not acceptable. Each rubber product must be fit for the use specified by the consumer. Failure analysis is critical to product improvement. the cause of the problem can be much harder to find. It can range from a design fault to poor material selection, to processing problems, to manufacturing errors such as poor dimensional tolerances, to poor installation, product abuse and unexpected service conditions. The rubber technologist must become a detective, gathering evidence, understanding the material type and using deductive reasoning. Testing and analysis of failed materials and components add to the information available for failure analysis. For example, stored aged tyres appeared superficially to be alright for use, but on drum testing small cracks grew more quickly than in new tyres leading to rapid failure in service. Quality control procedures such as product inspection, testing and material quality checks can help to reach 100 percent reliability. In critical applications such as electricians' gloves for high voltage working, gloves are inspected before each use, while engine seals may be routinely replaced before the expected lifetime to avoid problems. in the literature is not high. However, several reviews have been written on specific products and references can be found at the end of this review. Around 400 abstracts from papers in the Polymer Library are included with an index. Subjects covered include tyre wear and failure, seals, engine components, rubber bonding failure, rubber failure due to chloramine in water, tank treads, gloves and condoms, medical devices and EPDM roofing membranes.
Plastics Failure Analysis and Prevention
Plastics Failure Analysis and Prevention - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Plastics Failure Analysis and Prevention write by John Moalli. This book was released on 2001-12-31. Plastics Failure Analysis and Prevention available in PDF, EPUB and Kindle. This book contains analysis of reasons that cause products to fail. General methods of product failure evaluation give powerful tools in product improvement. Such methods, discussed in the book, include practical risk analysis, failure mode and effect analysis, preliminary hazard analysis, progressive failure analysis, fault tree analysis, mean time between failures, Wohler curves, finite element analysis, cohesive zone model, crack propagation kinetics, time-temperature collectives, quantitative characterization of fatigue damage, and fracture maps. Methods of failure analysis are critical to for material improvement and they are broadly discussed in this book. Fractography of plastics is relatively a new field which has many commonalities with fractography of metals. Here various aspects of fractography of plastics and metals are compared and contrasted. Fractography application in studies of static and cycling loading of ABS is also discussed. Other methods include SEM, SAXS, FTIR, DSC, DMA, GC/MS, optical microscopy, fatigue behavior, multiaxial stress, residual stress analysis, punch resistance, creep-rupture, impact, oxidative induction time, craze testing, defect analysis, fracture toughness, activation energy of degradation.Many references are given in this book to real products and real cases of their failure. The products discussed include office equipment, automotive compressed fuel gas system, pipes, polymer blends, blow molded parts, layered, cross-ply and continuous fiber composites, printed circuits, electronic packages, hip implants, blown and multilayered films, construction materials, component housings, brake cups, composite pressure vessels, swamp coolers, electrical cables, plumbing fittings, medical devices, medical packaging, strapping tapes, balloons, marine coatings, thermal switches, pressure relief membranes, pharmaceutical products, window profiles, and bone cements.
Plastics Failure
Plastics Failure - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Plastics Failure write by Myer Ezrin. This book was released on 2013-08-01. Plastics Failure available in PDF, EPUB and Kindle. Plastics failure, to a certain extent, is the result of a phenomenal increase in the number and variety of applications in relatively few years. The focus of this book is on actual field and product failures. The treatment is comprehensive, emphasizing cause and prevention. The concept of the interdependence of material, design, and processing is applied to all examples and cases. The "how to" of prevention is brought out as a logical extension of the cause of failure. Contents: Nature, Causes, and Consequences of Plastics Failure. Fundamental Materials Variables Affecting Processing and Product Performance or Failure. Failures Related to Design and Material Selection. Examples. Processing-Related Factors to Failure. Failure Related to Service Conditions. Failure Analysis and Test Procedures. Quality Control. Legal Aspects of Plastic Product Liability and Failure. Examples of Failures in Various Applications
