The material used in this study is a Carbon/PEEK (PolyEther-EtherKetone) pre-impregnated unidirectional tape composite. ROS samples were manufactured using chopped strands of preimpregnated tape. They were supplied already cut at the desired width and length. Unlike usual moulding compounds, that exhibit a variation in chopped strands dimensions, the ROS studied here, all have the same dimensions. The fibre volume fraction was approximately 60%. The consolidated ply thickness was 0.136 mm. The manufacturer’s recommended consolidation temperature was between 370 and 400 _C. In this study, three different strand sizes were considered: Large (25.4 mm long by 6.35 mm wide), Medium (12.5 mm long by 3.18 mm wide) and Small (6.35 mm long by 3.18 mm wide).