| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic flaw detection method having improved reliability.SOLUTION: In a three-dimensional ultrasonic flaw detection method using two or more of ultrasonic flaw detection sensors, the relative position between sensors from the propagation distance and the scanning direction of an ultrasonic wave directly transmitted/received between the sensors, the position of the ultrasonic flaw detection sensor on an object to be inspected is obtained from the propagation distance and the scanning direction of a wave reflected from the object to be inspected, and the ultrasonic wave is surely transmitted to and received from a place where flaw detection is required. |
