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High accuracy stress intensity factor measurement using the optical method of reflected caustics

✍ Scribed by I.R. Wallhead; L. Edwards

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
798 KB
Volume
49
Category
Article
ISSN
0013-7944

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✦ Synopsis

A comprehensive

guide to the application of the optical method of caustics to opaque engineering materials is provided. Practical recommendations are given which facilitate the measurement of stress intensity factors at considerably higher accuracies than is currently achieved and also permit measurements at stress intensities as low as I MPa&. Also included is a novel modification to the method whereby simultaneous measurement from both sides of the specimen automatically compensates for specimen aplanarity induced by a marginally misaligned loading fixture which produces errors of which most researchers may not be aware.

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