A Reliability Analysis Approach to Fatigue Life Dispersion of Laminated Glass Fiber Composite Materials

摘要

The statistical nature of the fatigue life of laminated glass fiber composite materials (FRP) is studied. Four different FRP laminates (satin woven FRP, plain woven FRP, roving woven FRP, and SMC laminated FRP) were used in the experiments. Unidirectional carbon fiber reinforced plastic was used for comparison. P-S-N diagrams for each laminate are presented. A statistical approach based on the Weibull distribution was applied to the test data to evaluate the dispersion in the fatigue life of the material. The effect of varying applied stress levels, specimen size, and glass fiber content on the fatigue life and its dispersion of the laminates is discussed.