Abstract

A method is described for monitoring changes in the strength properties of steels during fatigue testing based on measuring the velocity of propagation of ultrasound. It is shown to be possible to detect the dangerous stage of development of fatigue damage for individual industrial parts. A method is also proposed for restoring the function of manufactured items by treating them with high-power electric current pulses. It is shown that such treatment significantly increases the useful lifetime and can prevent fatigue failure.

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