Multiaxial fatigue behaviour of composite laminates

The behaviour of composite laminates and tubes subjected to multiaxial fatigue loads is analysed and discussed. Experimental data taken from literature are compared to investigate the influence of the main design parameters on the multiaxial fatigue strength. The effects of biaxiality ratio, off-axis angle, phase angle 5 between load components as well as the presence of notches have been considered. The biaxiality ratio turned out to be the more influencing design parameter, for both smooth and notched component