Article | REF: COR112 V1

Aging of composites - Study mechanisms and methodology

Author: Bruno MORTAIGNE

Publication date: June 10, 2005

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


Overview

Français

Read this article from a comprehensive knowledge base, updated and supplemented with articles reviewed by scientific committees.

Read the article

AUTHOR

  • Bruno MORTAIGNE: Doctorate in materials from the École Nationale Supérieure d'Arts et Métiers (ENSAM) - Materials" specialist - French defense procurement agency (DGA)

 INTRODUCTION

Establishing criteria and models for predicting the long-term behavior of organic matrix composites (OMCs) with fibrous reinforcements is a major challenge for designers and users alike. Optimizing the performance of equipment, and consequently of the materials used to make it, over increasingly long periods of time requires increasingly reliable models that take into account all the stresses and degradations induced by their propagation in service. This behavior must be fully integrated into the certification of CMO structures prior to their use.

Durability involves complex phenomena, which means that we need to understand the degradation mechanisms involved and combine knowledge of chemistry, physical chemistry, mechanics and numerical simulation to produce reliable behavior prediction models, leading to the cooperation of multidisciplinary teams in their study. To better predict their long-term behavior, it is necessary to carry out accelerated aging and correlate it with the aging of these same materials, in their usual structural configuration and conditions of use. The chosen acceleration factor must not alter the material's evolutionary mechanisms, and all influencing factors must be explored and their mode of action understood. Feedback on their behavior in use is essential to validate the predictive models that can be developed.

This article attempts to define the mechanisms and phenomena likely to contribute to the degradation of composite material properties, as well as the aging method and means to be used to establish reliable predictive models of long-term behavior, or at least to predict behavior in use. It focuses in particular on CMOs used for structural applications, and uses a variety of examples to describe the aging phenomena likely to be encountered in service. The application of the long-term behavior prediction method and test methods to specific examples is reported in the article [AM 5 321] .

This article complements the various articles on ageing studies [AM 3 150] , ,

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

Corrosion - Aging

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
Aging of composites