G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 29/04 (2006.01) G01B 17/02 (2006.01) G01N 29/24 (2006.01)
Patent
CA 2390712
A method for inspecting a clad pipe, having the steps of: transmitting longitudinal ultrasonic waves with wide-band characteristic to make it incident on an inner surface of a clad pipe, the clad pipe including a metal pipe with a coarse crystal grain structure and a different kind of clad metal built up on an inner surface thereof; and receiving reflected echoes of the longitudinal ultrasonic waves on the inner surface side thereof. When a flaw generated in an interface between the metal pipe and the different kind of metal is to be detected, the longitudinal ultrasonic waves in a frequency range of 10 to 30 MHz are preferably used as the ultrasonic waves. When the pipe thickness of the clad pipe is to be measured, the longitudinal ultrasonic waves in a frequency range of 2 to 10 MHz are preferably used as the ultrasonic waves.
Kaneshige Kenichi
Yamada Ryuzo
Daido Tokushuko Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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