Lap Shear Tensile Testing Machine per (ASTM D5868)

 Lap Shear determines the shear strength of adhesives for bonding materials when tested on a single-lap-joint specimen. The test is applicable for determining adhesive strengths, surface preparation parameters and adhesive environmental durability.

There are a variety of ASTM single-lap-joint shear tests including ASTM D1002 which specifies lap shear for metal to metal, ASTM D3163 for plastics joints, and ASTM D5868 for fiber reinforced plastics (FRP) against itself or metal.