[PDF] Durability Of Polymer Based Composite Systems For Structural Applications Analysis And Predictions eBook

Author : VRIJE UNIV BRUSSELS (Belgium)
Publisher :
Page : 16 pages
File Size : 12,3 MB
Release : 1990
Category :
ISBN :

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Most of the new composite systems, based on polymers (materials, structures and adhesive joints) exhibit time effects and their behaviour is strongly influenced by temperature moisture absorption and other environmental factors. The use of these materials for structural applications, mechanical loads, (of static, dynamical amd impact type), in a surrounding with varying environmental conditions, needs design procedures, which take into account this general loading history interacting with the thermomechanical characteristics, in order to obtain a reliable prediction of the long term behaviour. A valid methodology for life time prediction and/or durability analysis is probably the key element for a larger development of the use of polymer based composite systems in structures in the future. Belgium. (jes).

Author : A. H. Cardon
Publisher : Springer
Page : 536 pages
File Size : 36,31 MB
Release : 2011-10-08
Category : Technology & Engineering
ISBN : 9789401138574

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Ufe time prediction, durability and reliability analysis of structural components for industrial application, have been important problems for a long time, whatever materials used. Fatigue behaviour, fracture mechanics analysis, limit behaviour and strength criteria, as well as damage analysis, were developed in order to obtain material related elements to be used in structural component design. Classical materials such as metals are generally isotropic and a large amount of data are available for those materials since many decades. The analysis of many important failures of structural components brought attention to the influence of the environmental conditions, such as temperature, moisture, corrosive liquids and radiations, on the mechanical characteristics. In the last decades an important number of structural applications, especially in the aerospace industry, needed lightweight components and pushed the used materials and design concepts to higher levels of performances. The introduction of composites was an interesting answer to these goals, but they brought an important amount of new problems that has to be solved for safe structural applications under combined mechanical and environmental loading histories. Composites for structural applications can be built up with short or long continuous fibres or even textiles. They can be quasi-isotropic or anisotropic and the mismatch of fibre and matrix properties need a careful understanding of the interface interphase properties.

Author : A. H. Cardon
Publisher : Springer
Page : 560 pages
File Size : 48,94 MB
Release : 1991-01-31
Category : Technology & Engineering
ISBN :

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Advanced, high-performance composite materials are really material systems. The constituent materials interact in such a way that their collective response is more than the linear sum of the response of the constituents. This simple reality provides the technical community with a remarkable opportunity to create composite material systems which are uniquely suited to perform specific engineering tasks. At the same time, this systems aspect of composite materials is a very great challenge to the research community. In introduces complexity, nonlinearity, and scaling problems (to name a few) which require the development of new representations of material behavior, from the standpoint of mechanics, chemistry, and physics.

Author :
Publisher :
Page : 456 pages
File Size : 41,12 MB
Release : 1995
Category : Aeronautics
ISBN :

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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.

Author : Vistasp M. Karbhari
Publisher : Elsevier
Page : 381 pages
File Size : 35,10 MB
Release : 2007-07-25
Category : Technology & Engineering
ISBN : 1845693566

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Given the increasing use of fibre-reinforced polymer (FRP) composites in structural civil engineering, there is a vital need for critical information related to the overall durability and performance of these new materials under harsh and changing conditions. Durability of composites for civil and structural applications provides a thorough overview of key aspects of the durability of FRP composites for designers and practising engineers. Part one discusses general aspects of composite durability. Chapters examine mechanisms of degradation such as moisture, aqueous solutions, UV radiation, temperature, fatigue and wear. Part two then discusses ways of using FRP composites, including strengthening and rehabilitating existing structures with FRP composites, and monitoring techniques such as structural health monitoring. Durability of composites for civil and structural applications provides practising engineers, decision makers and students with a useful and fundamental guide to the use of FRP composites within civil and structural engineering. Provides a thorough overview of key aspects of the durability of composites Examines mechanisms of degradation such as aqueous solutions, moisture, fatigue and wear Discusses ways of using FRP composites, including strengthening and rehabilitating existing structures

Author : National Research Council
Publisher : National Academies Press
Page : 80 pages
File Size : 44,82 MB
Release : 2005-10-22
Category : Technology & Engineering
ISBN : 0309097150

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Advanced polymer matrix composites (PMC) have many advantages such as light weight and high specific strength that make them useful for many aerospace applications. Enormous uncertainty exists, however, in predicting long-term changes in properties of PMCs under extreme environmental conditions, which has limited their use. To help address this issue, the Department of Defense requested a study from the NRC to identify the barriers and limitations to the use of PMCs in extreme environments. The study was to focus on issues surrounding methodologies for predicting long-term performance. This report provides a review of the challenges facing application of PMCs in extreme environments, the current understanding of PMC properties and behavior, an analysis of the importance of data in developing effective models, and recommendations for improving long-term predictive methodologies.

Author : K.L. Reifsnider
Publisher : CRC Press
Page : 380 pages
File Size : 15,87 MB
Release : 1998-01-01
Category : Technology & Engineering
ISBN : 9789054109600

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Composite material systems are the basis for much of the natural world around us and are rapidly becoming the basis for many modern engineering components. A controlling feature for the general use of such systems is their damage tolerance, durability and reliability. The present book is a comprehensive cross section of the state of the art in the field of the durability of polymer-based, composite, and adhesive systems. As such, it is of special value to researchers concerned with the frontier of the field, to students concerned with the substance of the subject, and to the applied community concerned with the finding methodologies that make it possible to design safe and durable engineering components using material systems.

Author : A.T. Di Benedetto
Publisher : Elsevier
Page : 293 pages
File Size : 46,12 MB
Release : 1992-04-01
Category : Technology & Engineering
ISBN : 0444600795

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The contributions in this volume bring together the experience of specialists on the highly complex technology required for manufacturing composite structural parts, presenting fundamental descriptions of the processing and properties of these advanced materials.The 34 papers give a thorough overview on recent advances in this field. The contributions have been collected in two general categories: composites based on organic matrices; and composites based on inorganic matrices. In each group properties and manufacturing technologies are analyzed together with long term durability and the special applications for such advanced materials.

Author : Albert H. Cardon
Publisher : CRC Press
Page : 216 pages
File Size : 20,30 MB
Release : 1996-01-01
Category : Technology & Engineering
ISBN : 9789054106401

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Durability analysis can be defined as the prediction methodology of safe residual behaviour after a given life time under a complex mechanical loading history in combination with a program of environmental variations. This was, and is a central problem for the reliability of structural components whatever are the basic material systems. With composite systems, combination of different materials in interaction, an integrated material structure design becomes possible. If one of the phases is a polymer, the composite system has time dependent properties and as consequence durability analysis has to be performed taking into account the internal time factor in combination with strong influences from temperature changes and moisture diffusion. Insurance companies need information on durability and reliability in order to cover the risks, and in the event of failure lawyers have to arrive at an agreement om the responsibilites of the different actors involved in the constructiion. This book is an overview of the state of the different aspects of safe structural integrity for a given lifetime of composite structures, with special emphasis on polymer matrix composites. It is of interest for scientists and engineers involved in composites and for designers of composite structural components.

Author : Kishore V. Pochiraju
Publisher : Springer Science & Business Media
Page : 681 pages
File Size : 35,68 MB
Release : 2011-09-25
Category : Technology & Engineering
ISBN : 1441993088

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Long-Term Durability of Polymeric Matrix Composites presents a comprehensive knowledge-set of matrix, fiber and interphase behavior under long-term aging conditions, theoretical modeling and experimental methods. This book covers long-term constituent behavior, predictive methodologies, experimental validation and design practice. Readers will also find a discussion of various applications, including aging air craft structures, aging civil infrastructure, in addition to engines and high temperature applications.