Statistical characterization of graphite fiber for prediction of composite structure reliability
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Authors
Engelbert, Carl Robert
Subjects
Graphite fiber strength testing
graphite fiber statistical evaluation
composite reliability predictions
graphite fiber statistical evaluation
composite reliability predictions
Advisors
Wu, Edward M.
Date of Issue
1990-06
Date
June 1990
Publisher
Monterey, California: Naval Postgraduate School
Language
Abstract
The increased use of composite materials in Navy Applications brings with it the need to know quantitatively the reliability of composite structures. Traditional methods of reliability prediction cannot be used. Therefore, analytical modeling is required, and experimental methods with which to assess the model are needed. This research refined experimental methods and obtained benchmark statistical data on the strength of graphite fibers. With the Chain- of-Bundles local load sharing model, the data were then used as a guide to perform a parametric influence study on the sensitivity of composite structure reliability to the statistical distribution of its constituent graphite fibers. The results indicate a strong influence by the lower tail of the single fiber statistical distribution, which has important implications for design, acceptance testing, and other Navy procurement functions.
Type
Thesis
Description
Series/Report No
Department
Department of Aeronautics and Astronautics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
vii, 80 p. ill.
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.