Effects of Layering Types and Fiber Off-Axis Angle on the Mechanical Properties of S-Glass-fiber-Reinforced Composites

S-glass-fiber-reinforced plastic layered composites were prepared by the vacuum-assisted resin transfer molding, and their mechanical properties in relation to different layering types were studied. The effects of layering type and off-axis angle on the tensile and flexural strengths of the composites were clarified. In addition, variations in the intelaminar shear strength and bearing strength by bolted joints as functions of off-axis angle were investigated. Results indicated that the tensile and flexural strengths of the S-glass fiber composites with the 0° lamination were more sensitive to the off-axis angle than those with the 0°/90° orthogonal lamination.