Method of Controlling Housings of Engine Combustion Chambers with the Aid of an Ultrasonic Seeking Head

摘要

The method utilizes an ultrasonic seeking head, placed obliquely to the outer surface of the housings, for the purpose of exciting in it longitudinal and transverse waves for the detection of defects, the angle of beam inclination is fixed by changeable adapter. The proposed method increases the reliability of detecting inner and outer defects of engine combustion chamber housings by alternately changing the angle of inclination of the ultrasonic seeking head in plane of the investigated direction. At an alternating change in the angle of inclination of the seeking head in the housing symmetrical and asymmetrical normal waves do originate simultaneously. With symmetrical waves are revealed defects of the scaling type, and with asymmetrical waves - scratches and cracks. (Author)