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ASM Handbook

Composites

Edited by
Daniel B. Miracle
Daniel B. Miracle
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Steven L. Donaldson
Steven L. Donaldson
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ASM International
Volume
21
ISBN electronic:
978-1-62708-195-5
Publication date:
2001
Book Chapter

Fatigue and Life Prediction

By
Jeffrey R. Schaff
Jeffrey R. Schaff
United Technologies Research Center
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Published:
2001
Page range:
252 - 258
Publication history
November 01, 2001

Abstract

In the design of composite structures for durability and damage tolerance, the primary concerns are out-of-plane failures, such as delamination, material degradation associated with environment, stability under compression loading, large degree of scatter in fatigue life, and bearing failure of joints. This article presents introductory discussion on fatigue damage process, methodologies assessing fatigue behavior, and life prediction models. It describes the damage mechanisms introduced for a quasi-isotropic laminate under tension-compression fatigue loading. Delamination is a critical issue in fatigue and generally results from high interlaminar normal and shear stresses. The article schematically illustrates the structural elements in which high interlaminar stresses are common. It concludes with a discussion on the classification of fatigue models, such as mechanistic or phenomenological, for composite materials under cyclic loading.

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Jeffrey R. Schaff, 2001. "Fatigue and Life Prediction", Composites, Daniel B. Miracle, Steven L. Donaldson

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