<i><b>J</b></i><b>-integral Evaluation from Displacement Fields around Crack Tip Measured by Digital Image Correlatio</b><b>n </b>
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- YAMANE Hiroto
- Department of Mechanical Engineering, Aoyama Gakuin University
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- ARIKAWA Shuichi
- Department of Mechanical Engineering Informatics, Meiji University
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- YONEYAMA Satoru
- Fundamental Technology Research Center, Fuji Electric Co., Ltd.
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- WATANABE Yasuaki
- New Industry Creation Hatchery Center, Tohoku University
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- ASAI Tatsuhiko
- Fundamental Technology Research Center, Fuji Electric Co., Ltd.
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- SHIOKAWA Kunio
- Fundamental Technology Research Center, Fuji Electric Co., Ltd.
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- YAMASHITA Mitsuo
- New Industry Creation Hatchery Center, Tohoku University
Bibliographic Information
- Other Title
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- J-integral Evaluation from Displacement Fields around Crack Tip Measured by Digital Image Correlation
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Abstract
<p>In this paper, a method for evaluating J-integral for displacement fields obtained by digital image correlation (DIC) is proposed. First, the displacement gradient and strain are determined from the displacement using a least squares method on the domain of integration. Next, the stress components are determined from the strain using the Newton-Raphson method and material properties. Finally, the J-integral value is determined by the numerical integration on the domain of integration. The usefulness of this evaluation method is verified by applying this method to the displacement field obtained from the elasticplastic finite element analysis, and by applying to the experimental displacement field obtained by DIC.</p>
Journal
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- Advanced Experimental Mechanics
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Advanced Experimental Mechanics 2 (0), 92-98, 2017
The Japanese Society for Experimental Mechanics
