Measuring and testing – Vibration – By mechanical waves
Patent
1978-01-06
1982-12-28
Lovering, Richard D.
Measuring and testing
Vibration
By mechanical waves
73104, 25230119, 252316, 2524081, 252DIG1, 252600, 436 5, C09K 300, G01N 2904
Patent
active
043655165
ABSTRACT:
Substantially non-pollutant and non-toxic water washable composition in the form of a gel for use in non-destructive ultrasonic inspection of surface and subsurface flaws and discontinuities in bodies comprising a (1) poly(oxypropylene) poly(oxyethylene) condensate having a molecular weight ranging from about 1,000 to about 15,000, and (2) silica, particularly fumed silica, such silica being present in certain proportions, e.g. about 5% by weight of the composition. The composition or gel is applied to a surface of a body such as a metal aircraft structural part, and a probe or transducer of an ultrasonic testing device is contacted or pressed against the gel, and the transducer is caused to move or slide in various directions on the gel to transmit ultrasonic energy through the gel and the object, to inspect the object and locate any surface or subsurface flaws or discontinuities.
REFERENCES:
patent: 3304262 (1967-02-01), Corey
patent: 3367872 (1968-02-01), Martinek et al.
patent: 3621709 (1971-11-01), Frey
patent: 3740421 (1973-06-01), Schmolka
patent: 3826127 (1974-07-01), Molina
"Cab-0-Sil", Cabot Corp., 1968, pp. 8-10.
Geldin Max
Lovering Richard D.
Rockwell International Corporation
Silberberg Charles T.
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