Measuring and testing – Vibration – By mechanical waves
Patent
1988-06-13
1989-11-21
Levy, Stewart J.
Measuring and testing
Vibration
By mechanical waves
73644, 376252, G01N 2900
Patent
active
048814091
ABSTRACT:
A multi-point wall thickness gage (10) comprises a pad (16) of flexible magnetic material that includes an array of ultrasonic transducers (13) and a multi-point ultrasonic transmitter and receiver (25) to which each transducer (13) is attached. The magnetic pad (16) is attachable to the wall of a ferro-magnetic object (19), and serves to hold the array or matrix of ultrasonic transducers (13) against the wall of the object. The specific region of the object wall being inspected is marked off (17), and the magnetic pad (16) is periodically applied over this region (17). The output of the transducers (13) is used to detect whether any wall thinning is occurring over the particular area of the object covered by the magnetic pad (16), and if so, the particular pattern of thinning within the area. Trend monitoring is simplified since exact relocation of the transducers (13) for periodic measurements is more readily accomplished.
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Fess Lawrence G.
Levy Stewart J.
Panian Michael G.
Westinghouse Electric Corp.
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