FIELD: instrumentation.
SUBSTANCE: sound emission measurements of signals indicating fracture formation in fragile strained coat. Note here that additionally measured is the concentration of aerosol concentration in near-surface layer of fragile strained coat. At stress variation rate of up to 0.1 kN/s with allowance for 30 second correction for recording delay, oxide film and substrate destruction is revealed.
EFFECT: limiting state is diagnosed, early warning of structure destruction under bench and natural test conditions.
4 dwg
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