Three-point bending fatigue properties of carbon fiber composite laminates
In this paper,three-point bending tests of T700 carbon fiber composite multi-directional laminates with different thicknesses are carried out under two stress ratios and three stress levels,and the static and fatigue properties of three-point bending are analyzed.The morphology after damage was observed in different ways.The results show that the increase of material thickness increases the flexural strength and modulus of the specimen,and the three-point bending fatigue life of composite multi-directional laminates is proportional to the material thickness,and inversely proportional to the test stress ratio and stress level.The final fatigue failure degree of the sample is related to the fatigue life,the higher the number of fatigue cycles,the more severe the damage in the transverse and longitudinal directions of the plywood.At the same time,the greater the thickness of the sample,the more obvious the delamination phenomenon,and the phenomenon of fiber pull out.
composite materialthree point bendingbending fatiguedestroy the shapefatigue performance
万方数据
维普
