Crack paths in plane situations—I. General form of the expansion of the stress intensity factors
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2020, Theoretical and Applied Fracture MechanicsCitation Excerpt :For mode II shear fracture, the prediction of the initiation angle is still an unsolved question. Many theories have been proposed, based on the maximum tangential stress [26], the strain energy density [87], the energy release rate [96,40], or even the stress intensity factors [48,5]. Some of them reproduce specific experiments [26], but none of them can describe a universal law that is valid for all materials [7,83].
Crack arrest through branching at curved weak interfaces: An experimental and numerical study
2020, Theoretical and Applied Fracture MechanicsCitation Excerpt :The experimental results were interpreted with the help of FE-based computational models of the system by incorporating the concepts and methods of LEFM. The energy release rate (ERR) extracted from the computations satisfactorily agreed with the well established crack growth criteria at interfaces in [24], where a complete map of fracture patterns based on the elastic and fracture parameters of the system was developed, and with respect to the semi-analytical formulations [2,28]. Consequently, these models provided a suitable methodology to interpret the experimental trends in terms of crack path and its stability, and also to qualitatively identify the interface fracture toughness.
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