FIELD: physics.
SUBSTANCE: local stress-strain state is created in the construction by cooling the surface of the controlled area. Low-temperature energy is locally fed to the surface of the controlled area, received under the influence of the solid carbon dioxide CO2 "Dry ice" on the local control area. The appearance of the temperature gradient in the test material area is the cause of its stress-strain state, as a result of the dislocation motion, which will be accompanied by the acoustic-emission signals. The coordinates of the detected defects are determined and the hazard criteria of the detected defects is estimated by measuring the energy of the acoustic-emission signals initiated by the dislocation motion.
EFFECT: encreasing the reliability of defect detecting and performance of non-destructive testing in the acoustic-emission method of diagnosis.
3 dwg
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