Probabilistic strength-life model for graphite fibers under stress.
Gardener, Nigel Ian.
Wu, Edward M.
Gorman, Michael R.
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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.
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