Abstract
The objective of this study was to investigate the distribution properties of fatigue life and fatigue strength in sharply notched specimens of a carbon fabric laminate, which was made of three layers of eight-harness-satin/epoxy prepreg sheets. Fatigue life distributions were obtained at six stress levels by performing the carefully designed fatigue tests of four point plane bending under a constant temperature and humidity condition. The sample size used was 30 for the three high stress levels and 12 for the three low stress levels. The amount of scatter and distributional form of fatigue life and fatigue strength were discussed based on test results. It was found that the fatigue strength distributions were practically normal and their standard deviations were constant regardless of fatigue life.
