摘要: The crack propagation in PCBA (Lexan)-PMMA (Plexiglas) sandwich plates has been studied by means of the high-speed photography together with a dynamic caustics method. Various phenomena were observed these experiments: time lag between two cracks propagating into phases sandwich, coincidence and acceleration, deceleration bifurcation cracks. More precisely, initial begins to propagate first brittle (PMMA) phase while second later ductile (PCBA) plate. depend on nature degree compatibility
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