Shear strength and tensile strength essentially refer to the adhesive joint's ability to withstand the maximum load parallel or perpendicular to the bonding surface.Most adhesive shear strength tests are conducted using a single-lap joint structure. However, according to the test method specified in ASTM D3528, a double-lap shear test is adopted. This test ensures more balanced force distribution, thereby reducing the impact of peel stress and cleavage stress in single-lap tests.The determination of an adhesive's tensile strength and shear strength is typically carried out together.