The static and fatigue strength of bolted joints in composites with hygrothermal cycling

摘要

The effects of hygrothermal cycling upon the performance of a bolted composite joint was examined. Bot torque relaxed as the number of environmental cycles increased. Comparison with analytical results suggested that the bolt torque "zigzag" behavior probably results from the natural sensitivity of bolted composite joints to the existing ambient temperature and moisture. The washer effect and specimen surface finishes were investigated to study the friction effect on joint bearing performance.