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Full-field Strain Measurements for Microstructurally Small Fatigue Crack Propagation Using Digital Image Correlation Method
Published on: January 16, 2019
Development of a pattern to measure multiscale deformation and strain distribution via in situ FE-SEM observations
Y Tanaka1, K Naito, S Kishimoto
1The National Institute of Materials Science, Tsukuba, Ibaraki, Japan. TANAKA.Yoshihisa@nims.go.jp
Abstract:
We investigated a method for measuring deformation and strain distribution in a multiscale range from nanometers to millimeters via in situ FE-SEM observations. A multiscale pattern composed of a grid as well as random and nanocluster patterns was developed to measure the localized deformation at the specimen surface. Our in situ observations of a carbon fiber-reinforced polymer matrix composite with a hierarchical microstructure subjected to loading were conducted to identify local deformation behaviors at various boundaries. We measured and analyzed the multiscale deformation and strain localizations during various stages of loading.
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