Abstract

A method of predicting lifetime to failure for any wood composite system subjected to a complex load–time history has been developed. The prediction first requires the generation of a simple model to characterize the fatigue response of the particular composite system and a rainflow analysis breakdown of the load–time history under investigation. Once the models are derived they can be used to predict lifetimes to failure for any load–time history using a modified Palmgren–Miner damage summation rule. Variable amplitude fatigue testing of sample material using the same load–time histories allowed a comparison to be made between predicted and actual lifetimes to failure and was useful in verifying and refining the life prediction models. © 1998 Kluwer Academic Publishers

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