Cakici, U. G.Ece, R. E.Toros, S.Apatay, T.Yildirim, B.2024-11-072024-11-0720240039-23161573-9325https://doi.org/10.1007/s11223-024-00655-3https://hdl.handle.net/11480/16247In rotary wing aircraft, composite lug structures are perforated structures that connect the rotor and blades. They play a significant structural role in rotary wing aircraft. In this study the effect of lay-up parameters on mechanical strength of a thick composite part that represents a blade root. This part is autoclave manufactured polyetherketoneketone matrix carbon fiber reinforced (CF/PEKK) composites, which have recently been researched for usage in defense and aerospace is investigated. The chosen material carbon-fiber-reinforced polyetherketoneketone composites (CF-PEKK) have an excellent mechanical, physical, thermal performance. Aerospace sector has a special interest on this material due to material's low density and versatility. In this study, static and fatigue performance of rotorcraft lug part were investigated by applying non-destructive-test (NDT) methods and the mechanical strength values were discussed according to the experimental results. It has been observed that the component parts with -/+ 45 degrees layup has the highest mechanical strength. As a result of the static and fatigue tests, it is seen that satisfactorily performance in the view of the both static and dynamic loading states.eninfo:eu-repo/semantics/closedAccessthermoplastic compositescomposite lug structuresfatiguenon-destructive testArticle56236137410.1007/s11223-024-00655-32-s2.0-85199622808Q3WOS:001276954900002N/A