STUDY ON RECOVERY AND DEBONDING BEHAVIOR OF STEEL MEMBERS NEAR STIFFENERS WITH SECTIONAL LOSS USING EXTERNALLY BONDED CFRP

Abstract

 The purpose of this study is to develop a method to recover performance by integrating CFRP and steel members with sectional loss using the vacuum assisted resin transfer molding (VaRTM) technique. The effect of arrangement of CFRP on the recovery of bending strength has been experimentally investigated for steel members with trapezoidal sectional loss near the weld joint of stiffeners. The three-point bending tests have been conducted. Three cases of repair method have been prepared and examined. As a result, by attaching resin to the corner and then bonding the multi-layered CFRP, when CFRP is in a bending tensile state, it was found that it is possible to recover to maximum load of sound.