Acoustic pulse-echo wall thickness method and apparatus

Details Acoustic pulse-echo wall thickness method and apparatus Acoustic pulse-echo wall thickness method and apparatus

G - Physics

01

B

349/41

G01B 17/02 (2006.01) G01S 15/10 (2006.01)

Patent

CA 1175545

ACOUSTIC PULSE-ECHO WALL THICKNESS METHOD AND APPARATUS (D#77,150-F) ABSTRACT An apparatus and method for making wall thickness measurements. It is particularly applicable to pipeline use. It uses a pulse-echo acoustic arrangement with a single piezoelectric transducer sending and receiving acoustic signals from both faces. It has a pair of re- flectors, one for each face of the transducer so that acoustic energy is directed both normal to the wall and at an angle in order to simultaneously measure the wall thick- ness and find any anomaly such as pitting or the like. For pipeline use there may be a plurality of instruments situ- ated around the periphery of a unit to scan the walls as it travels through the pipeline.

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