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ZHENYA ZHANG1, SHUHUA ZHENG1,* , FENGHUA ZHOU2
Dynamic crack propagation experiments of PMMA plate under tensile loading are investigated using the modified version of electrical resistance grid technique. The experimental results show that for each preloaded plate, cracks arrive at a steady speed v0 after a short acceleration stage; the obvious crack speed oscillation occurs when the steady speed exceeds certain a critical speed. In order to quantify the relative amplitude of the crack’s speed oscillation, we introduced two basic parameters: the steady speed 0 v and the mean square error of the instantaneous speed k, which give a clear statement of the crack’s speed oscillation..
Dynamic crack propagation, PMMA, Mean square error, Speed oscillation.
ZHENYA ZHANG, SHUHUA ZHENG, FENGHUA ZHOU, Dynamic crack propagation experiment in brittle PMMA, Optoelectronics and Advanced Materials - Rapid Communications, 8, 9-10, September-October 2014, pp.937-942 (2014).
Submitted at: Sept. 11, 2013
Accepted at: Sept. 11, 2014
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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