Title:
超音波探傷方法及び装置
Document Type and Number:
Japanese Patent JP7120917
Kind Code:
B2
Abstract:
An ultrasonic flaw detection method and device identifies echoes appearing in flaw detection images. By selecting and controlling combinations of transmitting elements and receiving elements, plural waveform signals c are recorded. For each position in an inspection object, intensities of plural waveform signals are extracted based on the propagation time of ultrasonic waves and are totalized. A flaw detection image showing distribution of totalized intensities is generated. By selectively using at least three sound velocities for calculating propagation time of ultrasonic waves, at least three flaw detection images are generated. The areas of at least three echoes respectively appearing in the flaw detection images are calculated and the echo area which is the smallest is identified according to whether or not the flaw detection image showing the echo is one generated using one of a longitudinal sound velocity, a transverse sound velocity and a medium sound velocity.
Inventors:
Satoshi Kitazawa
Hidetaka Komuro
Junichiro Naganuma
Kazuya Ehara
Hidetaka Komuro
Junichiro Naganuma
Kazuya Ehara
Application Number:
JP2018245628A
Publication Date:
August 17, 2022
Filing Date:
December 27, 2018
Export Citation:
Assignee:
Hitachi ge Nuclear Energy Co., Ltd.
International Classes:
G01N29/06; G01N29/07
Domestic Patent References:
| JP2015210173A | ||||
| JP2020056687A | ||||
| JP4136755A | ||||
| JP2013215384A | ||||
| JP2010276465A |
Foreign References:
| WO2013114545A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Kaichi