PSI - Issue 28

Mohamed Ali Bouaziz et al. / Procedia Structural Integrity 28 (2020) 393–402 M.A. BOUAZIZ et al/ Structural Integrity Procedia 00 (2019) 000–000

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minimization of the error between experimental and numerical displacements. This enhancement improved the method accuracy and made the crack growth measurement less sensitive to the path discretization. It was shown that the J -integral could be obtained accurately by both (DIC-based and FE-based) methods during most of the propagation regime. In the DIC-based method, the J -integral calculation utilized local measurements and thus made it possible to obtain J - R curves independently of the specimen geometry. It is worth noting that these methods did not need any a priori calibration for the calculation of J . The investigated procedures were shown to be well adapted to polymeric 3D printed materials, and gave access to micrometer scales that have an important effect on the mechanical properties of such mesostructured architectures. References ASTM-6068. 2013. “Standard Test Method for Determining J-R Curves of Plastic Materials.” ASTM Standard Test Method i(C): 1–8. 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