A Model for Fatigue Strength Degradation Including Temperature Effect
A general statistical model that includes the interaction of applied stress, number of fatigue cycles and temperature is developed to analyze the fatigue degradation of composites. It is verified experimentally using fatigue data at room and liquid nitrogen temperatures for three different composites, e.g. cloth glass/epoxy, unidirectional glass/polyester and glass/polyester laminates. This model is useful in calculating the cyclic strength degradation curve at any desired temperature from static strength test results at this temperature and both static and fatigue results at room temperature.
KeywordsFatigue Graphite Epoxy Extren Fiberglass
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