Accession Number:

AD0291539

Title:

POTENTIAL OF FILAMENT WOUND COMPOSITES

Descriptive Note:

Corporate Author:

WHITTAKER CORP SAN DIEGO CALIF NARMCO RESEARCH AND DEVELOPMENT DIV

Personal Author(s):

Report Date:

1962-11-01

Pagination or Media Count:

12.0

Abstract:

The structural advantages of coating the fibers in a fiberglass composite with a ductile resin were investigated. It was hypothesized that such a coating might minimize the effects of crazing of the relatively brittle resin matrix by stopping craze cracks before they reach the glass fibers. In addition, the ductile coating might reduce any stress concentrations around broken fibers where load must be transferred into the broken fiber by resin shear. In an effort to detect the latter effect, fiber pull-out specimens were prepared using nylon coated fibers. Data on these tests are tabulated. Photoelastic specimens were prepared using Nylon coated fibers and containing discontinuities in the fibers. Biaxial tests were conducted on Scotchply maltese crosses simulating a filament-wound fiber-glass laminate. The data presented indicates that the maltese cross in the configuration used has its limitations, but among its advantages is the fact that it provides a cheap and convenient method of testing materials under biaxial loads. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE