Local and equivalent stress intensity factors for tortuous cracks under remote mode II loading
Sign Up to like & getrecommendations! Published in 2019 at "Theoretical and Applied Fracture Mechanics"
DOI: 10.1016/j.tafmec.2019.01.030
Abstract: Abstract In metallic materials the paths and fronts of fatigue cracks usually exhibit a certain tortuosity caused by microstructural heterogeneities. Our previous calculations for remote mode III loading revealed that the in-plane tortuosity of pre-crack… read more here.
Keywords: plane; remote mode; crack fronts; crack ... See more keywords
Nonlinear Focusing in Dynamic Crack Fronts and the Microbranching Transition.
Sign Up to like & getrecommendations! Published in 2017 at "Physical review letters"
DOI: 10.1103/physrevlett.119.215505
Abstract: Cracks in brittle materials produce two types of generic surface structures: facets at low velocities and microbranches at higher ones. Here we observe a transition from faceting to microbranching in polyacrylamide gels that is characterized… read more here.
Keywords: dynamic crack; transition; crack fronts; nonlinear focusing ... See more keywords
Depinning Dynamics of Crack Fronts.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.121.235501
Abstract: We investigate experimentally and theoretically the dynamics of a crack front during the microinstabilities taking place in heterogeneous materials between two successive equilibrium positions. We focus specifically on the spatiotemporal evolution of the front, as… read more here.
Keywords: dynamics crack; speed; depinning dynamics; crack fronts ... See more keywords