Influence of Partial Unloadings Range on the JI-R Curves of ASTM A106 and 3-Ni Steels
- 1 January 1986
- book chapter
- Published by ASTM International
- p. 364-378
- https://doi.org/10.1520/stp17407s
Abstract
An investigation was performed to evaluate the effects of elastic unloadings on the J-integral-resistance curves of ASTM A106 Class C steel and 3-Ni steels. Compact specimens (1T) were tested using (1) the multispecimen technique, (2) the direct-current potential drop technique, and (3) an elastic unloading compliance technique with unloadings ranging from 10 to 90%. The two former techniques were 0% unloading procedures used to generate the reference J-R curves. These reference curves were compared with J-R curves obtained using elastic unloading for the two steels. Results indicated that use of the elastic unloading compliance technique caused no significant difference in the J-R curves.Keywords
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