Variation of Tow Geometry according to Mold Property and Shear Angle during Draping on 3D Curved Surfaces

3 차원 곡면 드레이핑 중 금형의 물성과 전단각에 따른 토우구조의 변화

This paper aims to investigate the tow deformation pattern with respect to shear angle and mold property during draping of plain weave carbon/epoxy prepreg. Aluminum and PVC foams with different foam density are used for the draping hemisphere molds with 250 mm diameters. Microscopic observation reveals that tow parameters like crimp angle and Y-directional tow intervals are influenced by shear angle and mold density at the same time. The correlation between crimp angle and Y-directional tow interval is also found out.