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On the influence of specimen geometry on the critical crack-tip-opening displacement

✍ Scribed by O. Kolednik; P. Kutles̆a

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
822 KB
Volume
33
Category
Article
ISSN
0013-7944

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✦ Synopsis

Critical values of the crack-tip-opening displacement, COD,, are determined on CIIspecimens having different thicknesses and ligament lengths. COD, is determined using the method of stereophotogrammetry with the scanning-electron microscope. The in&nce of specimen geometry on CODi is studied. Criteria are given for the minimum specimen dimensions which are necessary to measure correct plane-strain COD,-values.

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