Abstract
A current approach to the acoustic fatigue analysis of composite structures is reviewed which is based upon the single mode method used previously for metallic aircraft structures. Some recent developments in acoustic fatigue studies are outlined and progressive wave tube testing at elevated temperatures is described. A recently developed method for fatigue testing composite material specimens in flexure is presented together with fatigue data for a composite material in several environmental conditions. The occurrence of residual thermal stresses in composite materials has been studied and future work required concerning three dimensional stress prediction methods and design procedures is discussed.
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