Title:
WELD DEFECT DETECTION METHOD AND WELD DEFECT DETECTION DEVICE
Document Type and Number:
Japanese Patent JP2013185969
Kind Code:
A
Abstract:
To provide a weld defect detection method and weld defect detection device which can simply extract an indication unit and identify an echo of the extracted indication unit.
A weld defect detection method and weld defect detection device include the steps of detecting an ultrasonic signal passing through a portion to be detected, adjusting a detection level according to the detection level of a detection signal with the shortest propagation path, and determining the increase of wave number from the waveform of a signal detected at the adjusted level.
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Inventors:
KIRIHIGASHI AKIHIRO
MICHIHASHI MASAHARU
MICHIHASHI MASAHARU
Application Number:
JP2012051465A
Publication Date:
September 19, 2013
Filing Date:
March 08, 2012
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
G01N29/04
Attorney, Agent or Firm:
Ryuichiro Mori
Masatake Shiga
Tadashi Takahashi
Tetsuo Yamazaki
Yasushi Matsunuma
Masatake Shiga
Tadashi Takahashi
Tetsuo Yamazaki
Yasushi Matsunuma