Matched‐die forming of a 90° bend in a quasi‐isotropic 16 ply laminate of ICI's APC‐2, containing 61 volume % Hercules AS‐4 continuous carbon fiber in poly(etheretherketone) (PEEK), is described. To uncouple and characterize elementary deformation phenomena, a series of simple tests are developed. Single ply bending of APC‐2 tape up to 420°C has been performed to characterize elastic bending. Transverse flow, axial interply shear flow, and z direction elasticity have been characterized in an instrumented matched die mold. Interply shear flow is characterized using a simple shear test fixture. Transverse flow and interply slip are relatively easily induced. Precautions should be taken to avoid fiber buckling and to provide for laminate reconsolidation.
No takes yet. Share an insight, caveat, or question.
Muzzy et al. (1990) studied this question.