Shear Strength Testing

Shear strength measures a material's ability to resist forces that cause the material to slide against itself. Many types of shear tests are performed on a universal test machine and the difference can be attributed to how two materials are joined together for testing. Popular methods of testing include Single lap shear (bevelled & joggled), Double lap shear, and Double-butt lap shear. A common shear test would involve testing a material that has been glued together. A universal test machine is used to apply the tensile or compressive load to determine the overall strength of the adhesive once the samples are pulled or pushed apart. Shear testing is not limited to adhesives but can also be applied to samples that have been welded together, for example, or joined in any number of ways.