ULTRASONIC FLAW DETECTOR.

摘要

Distance sensor means (10a), (10b) and an ultrasonic probe (9) are coupled together as a unitary structure such that distance sensor means (10a), (10b) will scan over the scanning lines in advance of the ultrasonic probe (9). The shape detection scanning for an object W by the distance sensor means (10a), (10b) takes place in parallel with the flaw detection scanning by the ultrasonic probe (9). The flaw detection region is divided into a plurality of small regions, a plurality of memory regions are set like a mesh to the memory to correspond to the small regions, and only one shape data of position memory region including the flaw detection region is stored in each of the memory regions. Based on the thus stored shape data, the position and attitude of the ultrasonic probe (9) are controlled at each of the flaw detecting points.