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Brief Communications

Crack dynamics in polymethyl methacrylate plates under quasi-static and dynamic loading

I. V. Smirnov, Yu. V. Sudienkov

Saint Petersburg State University

Abstract: Crack propagation in polymethyl methacrylate plates under various loading conditions are studied experimentally. It is shown that the behavior of a crack is unstable at both quasi-static and impulse loading. It is found that the time of crack propagation may be much longer than the duration of an external impulse action.

Received: 04.03.2011
Accepted: 12.05.2011

 English version: Technical Physics, 2011, 56:12, 1811–1814

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