Influence of Machining Process and Machining Induced Surface Roughness on Mechanical Properties of Continuous Fiber Composites

International audienceThis paper focuses on the mechanical behavior in quasi-static tests (compression and inter-laminar shear) of two composite materials machined by different processes. First, the impact of the variation of average surface roughness (Ra) and the machining process is studied for both materials and for each stress. The results of compression and inter laminar shear tests show that the mechanical behavior is greatly affected by the surface roughness and the machining temperatures. Secondly the effect of machining processes is detailed. The experimental results show the major dependence of the mechanical behavior on the machining process. The results obtained on the two materials being different, this work sheds light on the influence of the composition of composite materials on the surface defects and the mechanical behavior of such materials