Experiment on high-speed sand continuous erosion characteristics of CCF300/QY9511 composite laminates
Continuous erosion test was carried out for the CCF300/QY9511 carbon fiber/bismaleimide resin composite laminate,and the mass erosion rate and damage law under different erosion conditions were studied.It was found that the mass erosion first increased and then decreased with the increase of the erosion angle.The peak erosion rate appeared around the erosion angle of 60°.The erosion rate increased with the increase of the erosion rate,while it first increased and then decreased with the increase of the sand supply rate.Laying plain weave cloth on the surface of the composite laminates could enhance the ability of the composite material to resist low-speed erosion.However,the improvement effect under high-speed erosion was not obvious.The main erosion mechanisms of composite materials accounted for the generation of micro-cracks,fiber breakage,fiber-matrix debonding,and matrix deformation.The research clarified the removal mechanism and damage change law of composite laminates,laying a foundation for subsequent research on erosion resistance of composite materials.
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