ULTRASONIC FLAW DETECTION METHOD AND ULTRASONIC FLAW DETECTION APPARATUS

摘要

PROBLEM TO BE SOLVED: To mitigate a constraint of an object, whose flaws can be detected by a TOFD (Time Of Flight Diffraction) method, in an ultrasonic flaw detection method. SOLUTION: A transmitting oblique probe 11 for transmitting pulsed ultrasonic longitudinal waves to a scanned face 52 and a receiving oblique probe 12 for receiving the longitudinal waves of at least one of diffraction waves and scatter waves from an end of a defect on the scanned face 52 are disposed adjacent to a scanned face 53 on the same side as the scanned face 52. The transmitting oblique probe 11 transmits the ultrasonic longitudinal wave at an incident angle of 45°or smaller with respect to the scanned face 52. COPYRIGHT: (C)2004,JPO&NCIPI