BONDING STRENGTH EVALUATING METHOD OF DOUBLE WRAP COUPLING

PROBLEM TO BE SOLVED: To provide a bonding strength evaluating method of a double wrap coupling for evaluating a peel strength in a joint which can not clearly define an adhesive layer. SOLUTION: The bonding strength evaluating method of the double wrap coupling 100 including three laminated plate members including a composite material 10 and bound on side faces, has the process of obtaining an allowable shear stress of the double wrap coupling 100 by a tension test using a plurality of specimens with different binding lengths L, the process of obtaining a shear stress of the double wrap coupling 100 by a finite element analysis method, and the process of comparing and evaluating the allowable shear stress and the shear stress. COPYRIGHT: (C)2009,JPO&INPIT