Proof test methodology for composites
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Authors
Wu, Edward M.
Bell, David K.
Subjects
ARAMID FIBER COMPOSITES
FAILURE MODES
FATIGUE TESTS
MATERIALS TESTS
MATHEMATICAL MODELS
PROBABILITY THEORY
PROVING
RELIABILITY ENGINEERING
WEIBULL DENSITY FUNCTIONS
AIRCRAFT DESIGN
CERTIFICATION
DEFECTS
GLASS TRANSITION TEMPERATURE
HARDNESS
REINFORCING FIBERS
SERVICE LIFE
TENSILE STRENGTH
FAILURE MODES
FATIGUE TESTS
MATERIALS TESTS
MATHEMATICAL MODELS
PROBABILITY THEORY
PROVING
RELIABILITY ENGINEERING
WEIBULL DENSITY FUNCTIONS
AIRCRAFT DESIGN
CERTIFICATION
DEFECTS
GLASS TRANSITION TEMPERATURE
HARDNESS
REINFORCING FIBERS
SERVICE LIFE
TENSILE STRENGTH
Advisors
Date of Issue
1992-09
Date
Sep 01, 1992
Publisher
Language
Abstract
The special requirements for proof test of composites are identified based on the underlying failure process of composites. Two proof test methods are developed to eliminate the inevitable weak fiber sites without also causing flaw clustering which weakens the post-proof-test composite. Significant reliability enhancement by these proof test methods has been experimentally demonstrated for composite strength and composite life in tension. This basic proof test methodology is relevant to the certification and acceptance of critical composite structures. It can also be applied to the manufacturing process development to achieve zero-reject for very large composite structures.
Type
Conference Paper
Description
Series/Report No
Department
Organization
Unspecified Center
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
FAA, Ninth DOD(NASA)FAA Conference on Fibrous Composites in Structural Design, Volume 1; p. p 549-56
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.