Title:
DEFECT DETECTING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/150952
Kind Code:
A1
Abstract:
This defect detecting method is a method for using an ultrasonic probe to detect a defect present in an object under inspection, and includes a step of comparing a reference signal generated when an ultrasonic wave transmitted from a transmitting transducer in a state in which a bottom surface of a wedge is separated from the object under inspection is received by a receiving transducer by way of a lower surface of an absorbing portion, and surface noise generated when the ultrasonic wave transmitted from the transmitting transducer is received by the receiving transducer by way of a boundary between the lower surface of the absorbing portion and the object under inspection, to thereby determine whether the wedge and the object under inspection are in contact with one another.
Inventors:
NOMURA KOTA
WASA YASUHIRO
FUKUI TOSHIHIDE
WASA YASUHIRO
FUKUI TOSHIHIDE
Application Number:
PCT/JP2019/001117
Publication Date:
August 08, 2019
Filing Date:
January 16, 2019
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
G01N29/07; G01N29/32
Foreign References:
| JPH0517563U | 1993-03-05 | |||
| JPS62199670U | 1987-12-19 | |||
| JPH054009U | 1993-01-22 | |||
| JP2002243706A | 2002-08-28 | |||
| JP2005308691A | 2005-11-04 | |||
| JPS63235857A | 1988-09-30 | |||
| US5201225A | 1993-04-13 |
Other References:
"Non-destructive Inspection technology series, Ultrasonic flaw detection test 2", THE JAPANESE SOCIETY FOR NON-DESTRUCTIVE INSPECTION, 1 November 2000 (2000-11-01), pages 29 - 42
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (JP)
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