The Technology for Detecting Defect Position in Propellant Gains By Means of Automatic Ultrasonic Testing

摘要

The author aims at the realization of the exact position to the defects in testing the nonmetal material by ultrasonic transmission, so as to improve the testing quality. By transmission principle of tilt incident with ultrasonic longitudinal wave on the tangent line of the interior circle of the work-piece, making probe revolve one cycle, a single defect can be tested by testing twice, the exact position of the defect can be fixed based on the geometric theory. The author has fulfilled the exact position-fix of the defect and the pictured with three-dimensional array.