Impact and post-impact flexural property of 3D five-directional braided carbon/glass hybrid epoxy composites

Abstract

The impact property and residual flexural property of three-dimensional (3D) five-directional braided carbon/glass hybrid epoxy composites were studied. Four kinds of arrangement for carbon fiber and glass fiber in the axial yarn were designed. Taking pure carbon fiber composites (C/Ca) as the control, the rest of arrangements were that glass fiber and carbon fiber alternately arranged at the width direction (C/G1), glass fiber and carbon fiber alternately arranged at the thickness direction (C/G2), and only glass fiber appeared at the axial yarn (C/G3). Results showed that the C/G2 composite has higher impact energy absorption capacity, and the C/G1 composite has higher impact stress. The flexural properties of C/Ca composite are the best and that of C/G3 composite are the worst before impacting. This study is helpful for the structural design of composites in specific occasions.

A novel design of three‐dimensional/unidirectional hybrid composites to balance in‐plane and interlaminar mechanical properties

“…The results showed that the mechanical properties increase with the decrease of the braiding angle, and the longitudinal mechanical properties are more sensitive to braiding angle. Fang 15 added other fibers in the form of axial yarn to form a polyphase reinforced braided composite. The results showed that the polyphase reinforced braided composite could improve the impact resistance.…”