The work done in this investigation is part of a continuing program
designed to develop probabilistic strength and life models for filament
composite materials. In this particular experiment, groups of single fibers
from two chemically identical different production spools of graphite were
loaded to identical sustained tensile loads in order to determine their life
statistics while under stress. While previous work has produced models
of composite reliability as a function of strength, this work develops a
model which will be necessary to predict the reliability of composite fibers
as a function of time. Parametric and non-parametric methods were used
to quantify the relationship between fiber reliability as a function of stress
and as a function of time.
http://archive.org/details/probabilisticstr00gard
Lieutenant Commander, United States Navy
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