AUTOMATED ULTRASONIC NONDESTRUCTIVE TESTING SYSTEM

摘要

A small, general-purpose computer was used to automate an ultrasonic inspection machine designed to evaluate the internal integrity of flat plates and right circular cylinders. Application of the computer extended the capabilities of the basic system to include inspection of free-form surfaces of revolution. The automated system controls the positioning of the ultrasonic probe to maintain the probe perpendicular to and at a constant distance from the part surface. Using the front surface echo as the feedback control parameter, the desired tracking was achieved. Development of the automatic control system has greatly increased the versatility of the inspection device.