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Method of fabricating an article with cavitiesAn article having a cavity with a thin bottom wall is provided by assembling a thin sheet, for example, a metal sheet, adjacent to the surface of a member having one or more apertures. A bonding adhesive is interposed between the thin sheet and the subadjacent member, and the thin sheet is subjected to a high fluid pressure. In order to prevent the differential pressure from being exerted against the thin sheet, the aperture is filled with a plug of solid material having a linear coefficient of thermal expansion higher than that of the member. When the assembly is subjected to pressure, the material is heated to a temperature such that its expansion exerts a pressure against the thin sheet thus reducing the differential pressure.
Document ID
19740009976
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Dale, W. J. (NASA Langley Research Center Hampton, VA, United States)
Jurscaga, G. M. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 3, 2013
Publication Date
February 19, 1974
Subject Category
Space Vehicles
Accession Number
74N18089
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-LAR-10318-1|US-PATENT-3,793,109
Patent Application
US-PATENT-APPL-SN-224489

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