METHOD OF RECORDING FRACTURES IN FRAGILE STRAIN INDICATORS

摘要

FIELD: instrumentation.;SUBSTANCE: sound emission measurements of signals indicating fracture formation in fragile strained coat with additional measurement of aerosol concentration in near-surface layer of fragile stained coat are carried out. Concentration of micro particles depending on oxide film depth is defined by the formula: Ω=K_δ·lg(δ/δ₁₀), where δ₁₀ is oxide film minimum depth arbitrary taken to make 10 mcm; K_δ is the factor defined by strain indicator film depth and determined by experiments.;EFFECT: possibility to record structural material reconfiguration long before destruction.;2 cl, 5 dwg