INCREASING THE RELIABILITY OF ULTRASONIC INSPECTION WITH USE OF MAGNETOLIQUID ACOUSTIC CONTACT

This article proposes a simple method of determination of the reliabil ity of ultrasonic inspection in terms of the probability of detection of a defect of a certain equivalent size. The method was used for a co mparative investigation of the reliability of ultrasonic inspection in the contact and immersion methods and also with use of magnetoliquid acoustic contact. The investigation results show that use of magnetoli quid acoustic contact increases the probability of revealing of a defe ct with a signal/noise ratio of 6 dB from 30% to 100% and provides a r eduction in labor of three to five times without a decrease in reliabi lity.