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Aging results for PRD 49 III/epoxy and Kevlar 49/epoxy composite pressure vesselsKevlar 49/epoxy composite is growing in use as a structural material because of its high strength-to-weight ratio. Currently, it is used for the Trident rocket motor case and for various pressure vessels on the Space Shuttle. In 1979, the initial results for aging of filament-wound cylindrical pressure vessels which were manufactured with preproduction Kevlar 49 (Hamstad, 1979) were published. This preproduction fiber was called PRD 49 III. This report updates the continuing study to 10-year data and also presents 7.5-year data for spherical pressure vessels wound with production Kevlar 49. For completeness, this report will again describe the specimens of the original study with PRD 49 as well as specimens for the new study with Kevlar 49.
Document ID
19840039060
Document Type
Reprint (Version printed in journal)
Authors
Hamstad, M. A. (California, University Livermore, CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1983
Publication Information
Publication: Composites Technology Review
Volume: 5
Subject Category
COMPOSITE MATERIALS
Funding Number(s)
CONTRACT_GRANT: W-7405-ENG-48
CONTRACT_GRANT: NASA ORDER C-13980-C
Distribution Limits
Public
Copyright
Other