Effect of fiber diameter on the reliability of composites - Automated laser diffraction implementation

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effectoffiberdia00kunk.pdf (4.92 MB)
Authors
Kunkel, Jeffrey Scott
Subjects
Fiber diameter measurement||laser diffraction
stochastic diameter||composite reliability
Advisors
Wu, Edward M.
Date of Issue
1987-12
Date
December 1987
Publisher
Language
en_US
Abstract
Composite failures are microscopically sequential and locally redundant. As a result, a composite structure reliability and its strength dependency on geometric size is intimately dependent on the statistics of fiber filament strength. A composite reliability model is needed to utilize such inherent materials redundancy in structural design. This investigation first establishes the important role of fiber diameter measurement in the characterization of fiber filament strength statistics and the composite reliability function, and second, implements the diameter measurement by laser diffraction. This method is automated and lends itself to industrial adoption for materials development, acceptance and quality control.
Type
Thesis
Description
URI
https://hdl.handle.net/10945/22762
Series/Report No
Department
Aeronautics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
117 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.
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