Download or read book Stiffness and Fatigue Failure Prediction of Bonded Elastomeric Components written by and published by . This book was released on 2002 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stiffness and Fatigue Failure Prediction of Bonded Elestomeric Components written by Wei Hann Ng and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Elastomers and Components written by V A Coveney and published by Woodhead Publishing. This book was released on 2006-10-30 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Elastomeric components are widely used in engineering. Increasing demands are placed on them to withstand hostile conditions such as high temperature and corrosive environments. These demands make it harder to predict likely service life or improve design to ensure their longer-term performance. This important book reviews the wealth of research on understanding fatigue and failure in elastomers, and how this understanding can be used to predict and extend their service life.The first part of the book reviews factors determining ageing behaviour such as heat, corrosive environments, wear and cracking. It also discusses the strengths and weaknesses of current service prediction models. The second part of the book focuses on analysing and improving the design and service life of particular applications such as O-rings, bearings, springs and valves.With its distinguished editor and team of contributors, Elastomers and components: service life prediction; progress and challenges is an invaluable reference for engineers involved in the design and use of elastomers. - Looks at the wealth of research on understanding fatigue and failure in elastomers - Discusses the strengths and weaknesses of current service prediction models - An invaluable reference for engineers

Download or read book Fatigue Life Prediction and Modeling of Elastomeric Components written by Touhid Zarrin-Ghalami and published by . This book was released on 2013 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study investigates constitutive behavior, material properties and fatigue damage under constant and variable amplitude uniaxial and multiaxial loading conditions, with the goal of developing CAE analytical techniques for durability and life prediction of elastomeric components. Such techniques involve various topics including material monotonic and cyclic deformation behaviors, proper knowledge of stress/strain histories, fatigue damage quantification parameters, efficient event identification methods, and damage accumulation rules. Elastomeric components are widely used in many applications, including automobiles due to their good damping and energy absorption characteristics. The type of loading normally encountered by these components in service is variable amplitude cyclic loading. Therefore, fatigue failure is a major consideration in their design and availability of an effective technique to predict fatigue life under complex loading is very valuable to the design procedure. In this work a fatigue life prediction methodology for rubber components is developed which is then verified by means of analysis and testing of an automobile cradle mount made of filled natural rubber. The methodology was validated with component testing under different loading conditions including constant and variable amplitude in-phase and out-of-phase axial-torsion experiments. The analysis conducted includes constitutive behavior representation of the material, finite element analysis of the component, and a fatigue damage parameter for life predictions. In addition, capabilities of Rainflow cycle counting procedure and Miner's linear cumulative damage rule are evaluated. Fatigue characterization typically includes both crack nucleation and crack growth. Therefore, relevant material deformation and fatigue properties are obtained from experiments conducted under stress states of simple tension and planar tension. For component life predictions, both fatigue crack initiation approach as well as fatigue crack growth approach based on fracture mechanics are presented. Crack initiation life prediction was performed using different damage criteria. The optimum method for crack initiation life prediction for complex multiaxial variable amplitude loading was found to be a critical plane approach based on maximum normal strain plane and damage quantification by cracking energy density on that plane. The fracture mechanics approach was used for total fatigue life prediction of the component based on specimen crack growth data and FE simulation results. Total fatigue life prediction results showed good agreement with experiments for all of the loading conditions considered.

Download or read book Advances in Modeling and Design of Adhesively Bonded Systems written by S. Kumar and published by John Wiley & Sons. This book was released on 2013-05-29 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book comprehensively charts a way for industry to employ adhesively bonded joints to make systems more efficient and cost-effective Adhesively bonded systems have found applications in a wide spectrum of industries (e.g., aerospace, electronics, construction, ship building, biomedical, etc.) for a variety of purposes. Emerging adhesive materials with improved mechanical properties have allowed adhesion strength approaching that of the bonded materials themselves. Due to advances in adhesive materials and the many potential merits that adhesive bonding offers, adhesive bonding has replaced other joining methods in many applications. Containing nine articles written by world-renowned experts, the book deals with the advances in theoretical and computational modeling as well as the design and experimental aspects of adhesively bonded structural systems. Stress analysis and strength prediction of adhesively bonded structural systems, considering a range of material models under a variety of loading conditions, are discussed. Finite element modeling using macro-elements is elaborated on. Recent developments in modeling and experimental aspects of bonded systems with graded adhesive layers and dual adhesives are described. Simulation of progressive damage in bonded joints is addressed. A novel vibration-based approach to detect disbonding and delamination in composite joints is also discussed. Readership The book is central to a range of engineers including mechanical, reliability, construction and surface engineers as well as materials scientists who are engaged in the mechanics of structural adhesive joints. Industries that will use this book include aerospace, electronics, biomedical, automotive, ship building, and construction.

Download or read book Cohesive Zone Modelling for Fatigue Life Analysis of Adhesive Joints written by Alireza Akhavan-Safar and published by Springer Nature. This book was released on 2022-01-24 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains the numerical method for fatigue life analysis of adhesive joints using the CZM technique. CZM is a robust approach that is widely used for failure analysis of adhesive joints exposed to various stress conditions including fatigue. In this book, various aspects of the numerical evaluation of adhesive bonds using CZM are discussed. First of all, it is explained how different load and environmental parameters influence the service life of adhesive connections. Various types of CZM shapes and their applications are then discussed. It was answered how different parameters of a CZM should be defined. It is also discussed which CZM form should be used for each condition. The book then describes how the CZM parameters should be degraded to simulate the cyclic loading behavior of bonded structures. Various CZM strategies for the fatigue life assessment of adhesive joints are discussed. The book presents various techniques that can be followed for the simulation of load cycles for both high-cycle and low-cycle fatigue regimes based on the concepts of the CZM. Details of numerical methods to be considered in the FE software for the fatigue life assessment of adhesives with CZM are also described in this book. Finally, some numerical examples using CZM are also provided.

Download or read book Bonding Elastomers written by G. Polaski and published by iSmithers Rapra Publishing. This book was released on 2005 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: This review has been written as a practical approach to bonding various kinds of elastomers to substrates such as steel and plastics, as used in the manufacture of diverse products such as rubber covered rolls, urethane fork lift wheels, rubber lining for chemical storage or solid rocket motors, engine bushes and mounts, seals for transmissions, electrical power connectors and military tank track pads. Based on the authors' years of experience working closely with end-use customers and it offers a thorough overview of how to successfully bond rubber to a given substrate in the manufacture of quality rubber engineered components. This review is supported by an indexed section containing several hundred key references and abstracts selected from the Rapra Abstracts database.

Download or read book Fatigue and Durability of Structural Materials written by Gary R. Halford and published by ASM International. This book was released on 2006 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue and Durability of Structural Materials explains how mechanical material behavior relates to the design of structural machine components. The major emphasis is on fatigue and failure behavior using engineering models that have been developed to predict, in advance of service, acceptable fatigue and other durability-related lifetimes. The book covers broad classes of materials used for high-performance structural applications such as aerospace components, automobiles, and power generation systems. Coverage focuses on metallic materials but also addresses unique capabilities of important nonmetals. The concepts are applied to behavior at room or ambient temperatures; a planned second volume will address behavior at higher-temperatures. The volume is a repository of the most significant contributions by the authors to the art and science of material and structural durability over the past half century. During their careers, including 40 years of direct collaboration, they have developed a host of durability models that are based on sound physical and engineering principles. Yet, the models and interpretation of behavior have a unique simplicity that is appreciated by the practicing engineer as well as the beginning student. In addition to their own pioneering work, the authors also present the work of numerous others who have provided useful results that have moved progress in these fields. This book will be of immense value to practicing mechanical and materials engineers and designers charged with producing structural components with adequate durability. The coverage is appropriate for a range of technical levels from undergraduate engineering students through material behavior researchers and model developers. It will be of interest to personnel in the automotive and off-highway vehicle manufacturing industry, the aeronautical industry, space propulsion and the power generation/conversion industry, the electric power industry, the machine tool industry, and any industry associated with the design and manufacturing of mechanical equipment subject to cyclic loads.

Download or read book Service Life Assessment of Elastomers written by V. Coveny and published by Maney Pub. This book was released on 2004-06 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multi-author book is the first in a new series from the Institute of Materials, Minerals and Mining's Rubber in Engineering Committee. It presents the basic principles underlying the service life prediction of elastomers in engineering applications and includes a number of case studies. Elastomeric materials are almost ubiquitous in engineering, yet such materials are rarely included in the typical engineering curriculum. The net result is that engineers in industry are often ill prepared for the unique problems associated with designing elastomers. This book aims to redress the balance in the area of life prediction and to inform the reader of the benefits and limitations of established and emerging approaches.

Download or read book Statistical Model Prediction of Fatigue Life for Diffusion Bonded Inconel 600 written by Timothy Nowicki and published by . This book was released on 2008 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Diffusion bonding is a solid-state joining process, used in a wide range of fields, allowing the joining of both metallic and ceramic materials to create complicated parts and geometries. Diffusion bonded material has been found to contain inherent defects caused by the bond process that have been loosely associated to the lower tensile and fatigue strengths of the parent material. The process is relatively new, and little research has been done to characterize these defects or their relationship to bond quality, with the exception of a recent study that did relate tensile strength to the bond quality. Previous work resulted in successful diffusion bonding of Inconel 600, a high strength super alloy, optimization of bond process parameters, and the development of a method for qualitative analysis of bond quality. The first goal of the present research is to develop a 2-dimensional characterization of the diffusion bonding defects for use in predicting fatigue life. Then, by treating the defects as pre-existing cracks, fracture mechanics can be used to predict life to failure based on initial material quality. A Monte Carlo Simulation will be used to capture the variability in the defects and quality of the bond. The overall goal of this research will be to enhance the previous qualitative bond quality assessment by using defect measurements taken with the SEM. This will allow for not only a more quantitative relationship between bond quality and tensile strength, but can also provide a relationship bond quality and fatigue strength. The result would lead to less of a need for destructive testing of samples, saving overall costs. The diffusion bonded defects were successfully modeled and characterized statistically by defining their, sizes, shapes, locations, and populations. Defect areas were characterized as following a log normal distribution. Although very random in shape, the defects were simplified down to elliptical geometries defined by their major and minor axis. Locations were determined to be truly random on the bonding surface. Many defects were present on the bonding surface and the population density followed a normal distribution with a high amount of deviation. The model was developed in three separate phases, each increased in complexity and accuracy of the bond surface. Each stage improved overall predictions but was still far of from the low cycle fatigue results that were being used as a comparison. It was determined that assumptions of independent multiple crack growth on the bond surface and the validity of linear elastic fracture mechanics were incorrect, causing an over prediction of fatigue life. Defect interaction and possibly analysis into elastic-plastic fracture mechanics must be undertaken to improve the predictions of the diffusion bonding fatigue life."--Abstract.

Download or read book Predicting the Fatigue Life of Elastomer Components written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanics of Soft Materials written by Konstantin Volokh and published by Springer. This book was released on 2019-06-11 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a concise introduction to soft matter modelling, together with an up-to-date review of the continuum mechanical description of soft and biological materials, from the basics to the latest scientific materials. It also includes multi-physics descriptions, such as chemo-, thermo-, and electro-mechanical coupling. The new edition includes a new chapter on fractures as well as numerous corrections, clarifications and new solutions. Based on a graduate course taught for the past few years at Technion, it presents original explanations for a number of standard materials, and features detailed examples to complement all topics discussed.

Download or read book Fatigue and Fracture of Adhesively Bonded Composite Joints written by Anastasios P. Vassilopoulos and published by Elsevier. This book was released on 2014-10-21 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is commonly accepted that the majority of engineering failures happen due to fatigue or fracture phenomena. Adhesive bonding is a prevailing joining technique, widely used for critical connections in composite structures. However, the lack of knowledge regarding fatigue and fracture behaviour, and the shortage of tools for credible fatigue design, hinders the potential benefits of adhesively bonded joints. The demand for reliable and safe structures necessitates deep knowledge in this area in order to avoid catastrophic structural failures. This book reviews recent research in the field of fatigue and fracture of adhesively-bonded composite joints. The first part of the book discusses the experimental investigation of the reliability of adhesively-bonded composite joints, current research on understanding damage mechanisms, fatigue and fracture, durability and ageing as well as implications for design. The second part of the book covers the modelling of bond performance and failure mechanisms in different loading conditions. - A detailed reference work for researchers in aerospace and engineering - Expert coverage of different adhesively bonded composite joint structures - An overview of joint failure

Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Advances in Numerical Modeling of Adhesive Joints written by Lucas Filipe Martins da Silva and published by Springer Science & Business Media. This book was released on 2011-10-15 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with the most recent numerical modeling of adhesive joints. Advances in damage mechanics and extended finite element method are described in the context of the Finite Element method with examples of application. The book also introduces the classical continuum mechanics and fracture mechanics approach and discusses the boundary element method and the finite difference method with indication of the cases they are most adapted to. At the moment there a no numerical technique that can solve any problem and the analyst needs to be aware of the limitations involved in each case.

Download or read book Transactions of the Annual Meeting of the Orthopaedic Research Society written by Orthopaedic Research Society and published by . This book was released on 1980 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: Consists of the transactions of the 22nd- annual meeting of the society.