Features of Acoustic Emission in Composites and Applications for Stress Monitoring in Rocks
P. V. NIKOLENKO, V. L. SHKURATNIK
Moscow State Mining University, Leninskii pr. 6, Moscow, 119991 Russia
Keywords: stress–strain state, control, composites, anisotropy, acoustic emission, acoustic emission memory effect
Abstract
Experimental research is focused on the effect exerted by natural anisotropy orientation in some composites on the acoustic emission sensitivity of sensors. Acoustic emission is related with the angle of load application and lamination orientation in a composite. Based on cyclic test data, it is shown that the load application angle has significant influence on acoustic emission memory effect up to its complete vanishing. Considering the revealed mechanisms, the authors propose the method of stress-strain state control in mine design elements.
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