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

1981-07-27

1983-10-25

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

73623, 310335, 367151, G01S 1508

Patent

active

044123159

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 reflectors, 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 thickness and find any anomaly such as pitting or the like. For pipeline use there may be a plurality of instruments situated around the periphery of a unit to scan the walls as it travels through the pipeline.

REFERENCES:
patent: 3106839 (1963-10-01), Sansom
patent: 4022055 (1977-05-01), Flournoy et al.

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