Fig. 6: J-integral data obtained from the iterative and combined approaches. | Communications Materials

Fig. 6: J-integral data obtained from the iterative and combined approaches.

From: Resolving the fundamentals of the J-integral concept by multi-method in situ nanoscale stress-strain mapping

Fig. 6

J-integral data from the iterative approach in analogy to ASTM 1820 (open black squares) in conjunction with the contour J-integral evaluation for LS1, LS2, and LS3 averaged from 5 to 13 µm crack tip distance as well as data from FE simulations (red pentagons). a The individual symbols correspond to small (8 µm: green squares), medium (16 µm: orange circles) and wide (24 µm: blue triangles) integration paths, respectively. Contour J-integral data as a function of distance between the crack tip and the elliptic contour are shown using plastic (filled symbols) and elastic (open symbols) strain energy density evaluation for (b) LS1, (c) LS2 and (d) LS3, respectively. The figure legend in (b) is applicable for (c) and (d) as well. The error bars in (a) depict the standard deviation of the J-integral values in the averaged region for the combined approach and uncertainty propagations from the uncorrelated geometric and mechanical input quantities for the iterative method.

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