An Experimental Study of Installing-Holes Parameter Optimization for Metallic Inserts Bonded into CFRP Laminates

摘要

CFRP laminates are used for various aircraft structural components because of their good mechanical and physical properties. Metallic inserts are one kind of aerospace fasteners, which are usually installed in the metallic components by an interference fit. However, when metallic inserts are installed in the CFRP laminates by the traditional installing way, delamination and low efficiencies are troublesome. Therefore, excellent quality and cost effective installing metallic inserts into the CFRP laminates remains a challenge. In this paper, a series of experiments were carried out to study the installing-holes parameter optimization for metallic inserts bonded into the CFRP laminates. The experimental results show that the push-out values and breakaway torque values of metallic inserts bonded in the CFRP laminates are not reduced obviously for 4 different type installing-holes.