Shear properties in the plane of the panel ( interlaminar shear ) duplicate the kind of shear stress encountered in such glued structural assemblies as structural sandwiches and adjacent to gluelines between ? anges and webs in box - beams and i - beams and gusset plates in trusses 面板表面剪切性能（层间剪切） ，在遇到粘合结构组合例如结构夹层以及靠近于边缘，箱束网和构架盘上三角片间的粘合线时，使剪切应力双倍
