Abstract
We analyze a kinked and curved crack in an elastic body by using the first order perturbation method, where the result is applied to a straight crack with a slightly kinked and curved crack extension in a finite body. Crack path criteria are discussed for the crack path prediction in brittle solids, which may also lead to some considerations about the crack path stability; i.e., whether the crack path keeps its direction or not. The first order perturbation is then applied to a system of kinked and curved cracks for the simulation of curved or wavy crack propagation in brittle solids, where attention is focused on the transition from straight to wavy crack propagation of edge cracks due to the penetration of surface cooling. The simulated results are compared with experimentally observed wavy cracks in a heated glass plate, whose edge was gradually immersed into a cooling bath filled with water, so as to identify the parameter which characterizes the straight versus wavy crack paths.
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Sumi, Y. (2014). Crack Paths in Brittle Solids. In: Mathematical and Computational Analyses of Cracking Formation. Mathematics for Industry, vol 2. Springer, Tokyo. https://doi.org/10.1007/978-4-431-54935-2_7
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DOI: https://doi.org/10.1007/978-4-431-54935-2_7
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