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Author: John Moalli Publisher: William Andrew ISBN: 081551865X Category : Technology & Engineering Languages : en Pages : 351
Book Description
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.
Author: D. Wright Publisher: iSmithers Rapra Publishing ISBN: 185957517X Category : Science Languages : en Pages : 412
Book Description
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
Author: John Moalli Publisher: William Andrew ISBN: 081551865X Category : Technology & Engineering Languages : en Pages : 351
Book Description
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.
Author: Vishu Shah Publisher: John Wiley & Sons ISBN: 1118943627 Category : Technology & Engineering Languages : en Pages : 528
Book Description
Written in easy-to-read and -use format, this book provides a strong training resource and reference for product designers using plastics in their products – helping them identify, quantify, and confirm whether problems are related to product design or process. • Updates coverage of data analysis techniques and examples and expands coverage of failure analysis, key because of increased litigation related to product liability • Overviews plastic testing methods and the framework to investigate causes of plastic part failure • Provides a strong training resource and reference for product designers using plastics in their products • Features a video tour of a plastics testing labroatory on a companion website and has a separate manual of problems and solutions that are appropriate for college professors using the book as a class textbook
Author: Friedrich Kurr Publisher: Carl Hanser Verlag GmbH Co KG ISBN: 1569905452 Category : Technology & Engineering Languages : en Pages : 461
Book Description
With 588 images and associated analyses for avoidance of damage to plastics, this manual is aimed at both professionals and students. Many technical terms and colloquial descriptions, explanations, and interconnections with related areas, together with the images, facilitate the reader in determining and describing the exact type of damage of a given sample. The images, from microscopic quality and damage analysis of molding materials, semi-finished products, and molded parts, are divided into 74 subject areas of plastics processing and application, and are classified based on over 2620 industry-standard technical terms. The analyses were performed with various light microscopes and a scanning electron microscope.
Author: ASM International Publisher: ASM International(OH) ISBN: Category : Technology & Engineering Languages : en Pages : 496
Book Description
The selection and application of engineered materials is an integrated process that requires an understanding of the interaction between materials properties, manufacturing characteristics, design considerations, and the total life cycle of the product. This reference book on engineering plastics provides practical and comprehensive coverage on how the performance of plastics is characterized during design, property testing, and failure analysis. The fundamental structure and properties of plastics are reviewed for general reference, and detailed articles describe the important design factors, properties, and failure mechanisms of plastics. The effects of composition, processing, and structure are detailed in articles on the physical, chemical, thermal, and mechanical properties. Other articles cover failure mechanisms such as: crazing and fracture; impact loading; fatigue failure; wear failures, moisture related failure; organic chemical related failure; photolytic degradation; and microbial degradation. Characterization of plastics in failure analysis is described with additional articles on analysis of structure, surface analysis, and fractography.
Author: Myer Ezrin Publisher: Carl Hanser Verlag GmbH Co KG ISBN: 3446428828 Category : Technology & Engineering Languages : en Pages : 869
Book Description
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
Author: Rainer Dahlmann Publisher: Walter de Gruyter GmbH & Co KG ISBN: 3110785692 Category : Science Languages : en Pages : 259
Book Description
Damage to plastic products requires immediate action in often complex situations. Failure and damage analysis is then an important tool for avoiding further economic losses and in the next steps for quality assurance and product safety. In order to solve problems and develop remedial measures, basic knowledge of plastics analysis, materials and typical damage mechanisms as well as systematic approach are necessary. The book supports the reader in all these points by providing a basic insight into the systematic approach and serving as a guide for practical implementation. In particular, manufacturing and material-related aspects are also taken into account, so that a comprehensive and universal method for determining the causes of damage to plastic products is presented. Examples in the form of briefly summarized cases of damage from practical experience as a damage analyst round off the descriptions of the procedure.
Author: Robert C Portnoy Publisher: William Andrew ISBN: 0815518250 Category : Technology & Engineering Languages : en Pages : 225
Book Description
The use of plastics is widespread. Less widespread, however, is a clear understanding and examination of the many forms of degradation inherent within the very environments these materials must perform. Medical PlasticsùDegradation Resistance & Failure Analysis fills that void. The introductory chapter gives an overview of the medical applications of plastics and the specific performance requirements they need to meet. The following chapters discuss various degrading environments and their effects including environmental stress cracking, effect of body liquids, effect of harsh environments, and various methods of sterilization. The book also discusses the failure of medical devices due to contamination, low temperature, the effects of UV light, migration of formulation components, mechanical stresses, and problems with design and fabrication. Case histories of failures of some common products used in medicine are also provided.
Author: John Moalli
Author: D. Wright
Author: John Moalli
Author: Vishu Shah
Author: Friedrich Kurr
Author: ASM International
Author: Myer Ezrin
Author: Rainer Dahlmann
Author: Robert C Portnoy
Author: TODD. MENNA
Author: Myer Ezrin