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US 3,939,101 AGranted
Composition for ultrasonic inspection of objects and method for employing same
AssigneeRockwell International Corporation
InventorOrlando G. Molina
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AssigneeRockwell International Corporation
InventorOrlando G. Molina
Estimating the term…
Composition for ultrasonic inspection of surface and subsurface flaws and discontinuities in bodies, in the form of an aqueous gel containing an N-alkyl-2-pyrrolidone having a short alkyl chain, preferably N-methyl-2-pyrrolidone, a water soluble surfactant, e.g. a nonyl phenyl ether of polyethylene glycol, and silica, preferably in fine powder form, suspended uniformly in the gel. 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.
A composition for ultrasonic inspection of surface and subsurface flaws and discontinuities, comprising an aqueous gel containing an N-alkyl-2-pyrrolidone wherein the alkyl group contains from 1 to 4 carbon atoms, a water soluble surfactant and silica suspended in said gel.
A composition for ultrasonic inspection of surface and subsurface flaws and discontinuities, comprising a gel consisting essentially of about 10 to about 40 percent of an N-alkyl-2-pyrrolidone wherein the alkyl group contains from 1 to 4 carbon atoms, about 10 to about 35 percent of a water soluble surfactant, about 10 to about 50 percent water and about 10 to about 40 percent powdered silica distributed in said gel, by weight.
Dependencies are inferred from the claim text.