| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasound flaw detection method capable of easily measuring the thickness of a test object and a material quality changed part. SOLUTION: The ultrasound flaw detector 10 detects a flaw on a test object 20 by bringing a transmitter probe T and a receiver probe R into contact with a surface 11 of the test object 20. The transmission probe T transmits outgoing pulse tends to mode convert between transverse waves and longitudinal waves to the test body 20, and the receiver probe R receives the mode converted mode conversion pulse from a bottom surface 13 of the test object 20. The thickness of the test object or the material quality changed part is measured from the distance between the transmission probe T and the receiver probe R, and the path length of the incident bottom surface mode conversion pulse. COPYRIGHT: (C)2006,JPO&NCIPI
|
