Overview

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. Table of Contents Front Matter Executive Summary 1 Background and Overview 2 Composite Properties and Behavior 3 A Team Strategy 4 Roadmapping 5 The Importance of Data 6 A Path Forward Appendix A Committee Members Appendix B Frequently Used Abbreviations Appendix C Why Polymers Are More Susceptible Than Other Materials to Environmental Damage Appendix D Organizations Interested in Damage in Composite Materials Appendix E Survey of Some Computational Models for Failure, Damage, and Degradation in Composite Materials Appendix F Roadmapping Process Appendix G Attendees at the July 2004 Workshop

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Author Information

Committee on Durability and Life Prediction of Polymer Matrix Composites in Extreme Environments, National Research Council

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