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Pressurized Shell Molds For Metal-Matrix CompositesBalanced-pressure molds used to make parts in complex shapes from fiber-reinforced metal-matrix composite materials. In single step, molding process makes parts in nearly final shapes; only minor finishing needed. Because molding pressure same on inside and outside, mold does not have to be especially strong and can be made of cheap, nonstructural material like glass or graphite. Fibers do not have to be cut to conform to molds. Method produces parts with high content of continuous fibers. Parts stiff but light in weight, and coefficients of thermal expansion adjusted. Parts resistant to mechanical and thermal fatigue superior to similar parts made by prior fabrication methods.
Document ID
19930000108
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Kashalikar, Uday K.
(Foster-Miller, Inc.)
Lusignea, Richard N.
(Foster-Miller, Inc.)
Cornie, James
(Massachusetts Inst. of Tech.)
Date Acquired
August 16, 2013
Publication Date
February 1, 1993
Publication Information
Publication: NASA Tech Briefs
Volume: 17
Issue: 2
ISSN: 0145-319X
Subject Category
Fabrication Technology
Report/Patent Number
MSC-21452
Accession Number
93B10108
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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