In-Plane Shear Characterization of Unidirectional Fiber Reinforced Thermoplastic Tape Using the Bias Extension Method

Through an improved characterization methodology, this work contributes to better prediction quality in composite forming simulations for unidirectional thermoplastic composites. A understanding of the behavior will aid adoption these lightweight materials aerospace applications. The bias extension method was implemented and applied cross-ply laminates from carbon fiber reinforced characterize in-plane shear deformation resistance molten material. Two commercially available were characterized at three rates temperatures. measured directly on specimen throughout test using a video extensometer, avoiding use pin-jointed net assumption relate clamp displacement. In addition, distribution over surface after image analysis. observed similar typical woven materials, with some agreement assumptions but also identified deviations. Localization along direction outer ply occur approximately 15° angle. proposed relates force specimen, ensuring correct mechanism. This key benefit solves common issue found other methods