Ballistic damage of graphite-epoxy plates
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Authors
Eaton, George Arthur
Subjects
Advisors
Bank, Milton H.
Date of Issue
1977-06
Date
1977-06
Publisher
Language
en_US
Abstract
Thin eight-ply laminated graphite-epoxy plates of a representative lay-up (0/tolerance 45 degrees/0)(s) were damaged ballistically. The extent of damage varied with impact velocity and impactor mass. Visual and microscopic inspection was augmented by x-ray inspection utilizing a radio-opaque dye, to evaluate the extent of damage area. Specimens were then tested in tension to failure, to evaluate the residual strength. Damage length (in the 0 degree direction) varied with impact velocity, the greatest damage resulting from the lower velocities. Damage width (in the 90 degree direction) was not greatly affected by velocity changes. Variation of impactor mass had little effect. Residual strength as measured by tensile tests in the 0 degree direction was insensitive to damage size effects.
Type
Thesis
Description
Series/Report No
Department
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
62 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.