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ASM Handbook

Mechanical Testing and Evaluation

Edited by
Howard Kuhn
Howard Kuhn
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Dana Medlin
Dana Medlin
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ASM International
Volume
8
ISBN electronic:
978-1-62708-176-4
Publication date:
2000
Book Chapter

Fatigue Crack Growth Testing

By
Ashok Saxena
Ashok Saxena
Georgia Institute of Technology
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Christopher L. Muhlstein
Christopher L. Muhlstein
University of California
,
Berkeley
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Published:
2000
Page range:
740 - 757

Abstract

Testing and characterization of fatigue crack growth are used extensively to predict the rate at which subcritical cracks grow due to fatigue loading. ASTM standard E 647 is the accepted guideline for fatigue crack growth testing (FCGR) and is applicable to a wide variety of materials and growth rates. The two most widely used types of specimens are the middle-crack tension and compact-type specimens. This article describes the factors affecting the selection of appropriate geometries of these specimens: consideration of material availability and raw form, desired loading condition, and equipment limitations. Various crack measurement techniques, including optical, ultrasonic, acoustic emission, electrical, and compliance methods, are also reviewed. The article discusses the two major aspects of FCGR test analysis: to ensure suitability of the test data and to calculate growth rates from the data.

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Ashok Saxena, Christopher L. Muhlstein, 2000. "Fatigue Crack Growth Testing", Mechanical Testing and Evaluation, Howard Kuhn, Dana Medlin

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