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CONTROL OF ELEMENTS OF CONSTRUCTION MACHINES AND METAL STRUCTURES USING LOW-APERTURE MAGNETOSTRICTIVE SENSORS

The aim of the work is to develop a method and technique for ultrasonic testing of elements of building machines and metal structures using low-aperture magnetostrictive transducers.A study was conducted to detect cracks in the prototype. The crack was grown artificially by repeated variable bending loads on the part.It was shown that the delay time for the signal to pass through the cracked section of the sample increased by 0,5∙10-6 s compared to the delay time when the signal passed through the defect-free portion of the sample, and the signal amplitude decreased by more than 10 times.Currently, ultrasonic testing methods for detecting surface cracks are the most promising. It seems advisable to direct further actions to an in-depth study of the transformation and interference of various types of waves in ultrasound paths and the development of methods for monitoring various objects.