Composite failure criterion - probabilistic formulation and geometric interpretation.
Loading...
Authors
Lim, Jong Chun
Subjects
probabilistic composite failure criterion
Advisors
Wu, Edward M.
Date of Issue
1988-12
Date
December 1988
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
The objective of this investigation is to derive the reliability and the
associated probabilistic failure criterion for composite materials under
combined stress. In the analytical derivation, the concept of joint probability
was used and applied to the Weibull distribution function. In applications, given
the experimental measurements of the necessary statistical parameters for the
specific composite, the probabilistic criterion of the composite failure and the
reliability of the specific structure can be predicted.
Graphical representations for the joint reliability and joint failure contours
were made in two and three dimensional space for the several different sets of
statistical strength parameters to illustrate the effect of parameters on reliability.
Such understanding will enhance selection of fiber and matrix (which have their
own statistical strength parameters) and can lead to improvement in reliability of
some composite components in an aircraft structure. These reliability and
failure concepts can also be used in repair problems by selecting the proper
composite material with the appropriate statistical parameters.
Type
Thesis
Description
Series/Report No
Department
Aeronautics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
89 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
Copyright is reserved by the copyright owner