A Critique on Evaluating Fatigue Crack Propagation Properties Using Miniature Specimens

Chow Shing Shin; Shi Wei Lin

doi:10.4028/www.scientific.net/AMR.146-147.646

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 146-147A Critique on Evaluating Fatigue Crack Propagation...

A Critique on Evaluating Fatigue Crack Propagation Properties Using Miniature Specimens

Abstract:

There are situations where baseline fatigue crack propagation (FCP) data are needed but the available material for its evaluation is far from enough to fabricate full sized standard specimens. Miniature specimen testing techniques have been proposed but published data seems to be slightly but consistently slower under the same stress intensity than that from standard specimen results. In this work, an aluminum alloy and a steel, which have vastly different mechanical behaviors, are used to generate different stress states and premature crack closure to allow the validity of miniature specimen FCP data to be critically examined.

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Periodical:

Advanced Materials Research (Volumes 146-147)

Pages:

646-649

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.146-147.646

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Online since:

October 2010

Authors:

Chow Shing Shin, Shi Wei Lin

Keywords:

Crack Closure, Fatigue Crack Propagation Properties, Miniature Specimen, Small Specimen Test Technique, Stress State, Thickness Effect

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References

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