FIELD: testing technologies.
SUBSTANCE: method includes using symmetric cycles with different load levels to unload standard samples until destruction, calibration dependence of number of cycles until destruction from load value is determined, after that at least one tested sample is cyclically load, with changing of cycle parameters in turns. Each loading step of tested object includes recording infrared radiation from its surface, using it to measure temperature increase in place of local heating of object and determining dependences of increases of temperature from load value and cycle asymmetry coefficient, after that calibration dependence for each increase of temperature is used to determine appropriate number of cycles until destruction.
EFFECT: higher precision and efficiency.
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