Measuring and calculating GTOD and the J-integral with a double clip gauge |
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| Authors: | DENG ZHIH-SHEN CHANG CHYUN-HUA WANG TE-KEN |
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| Affiliation: | Central Iron &Steel Research Institute, Ministry of Metallurgical Industry, Peking, China;Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China;Central Iron &Steel Research Institute, Ministry of Metallurgical Industry, Peking, China |
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| Abstract: | This paper describes a technique for measuring and calculating CTOD (crack tip opening displacement) arid the J-integral with double clip gauge. CTOD (or δ) and the rotation factor (r), the relation between δ and J-integral, as well as the R-curves δ - Δa and J. Δa are discussed. From the measurements with double clip gauge, one can calculate CTOD and J througout the entire loading process. The present technique seems to be a better approach than DD19, in which r is taken as a constant (r = 1/3). |
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| Keywords: | CTOD J-integral measurement double clip gauge |
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