Use of Acoustic Emission Memory of Composites for Ultimate Stress Control in Rock Masses
V. L. SHKURATNIK, P. V. NIKOLENKO
Moscow State Mining University, Leninskii pr. 6, Moscow, 119991 Russia
Keywords: stress–strain state, rock mass, composites, acoustic emission, memory effect, sensor-indicator
Abstract
The regular patterns of initiation and show of acoustic emission memory effect in a composite are experimentally obtained using cloth laminate. The authors illustrate capacity of cloth laminate as an absolute sensitive stress-to-acoustic emission converter. The designed and tested downhole sensor enclosing this converter provides indication of incremental stress excess over pre-assigned critical limit.
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