An experiment for determining the shear strength of specimens using a double shear test. It fits in the Universal Testing Machine (SM1000) and consists of a specimen holder and shear strap.
Shear testing determines the shear strength, t, of cylindrical materials. This is based upon DIN50141 standard which is valid for materials with a maximum tensile stregth of 1300 n.mm-2.
The Double Shear Experiment (SM1000j) fits in the area below the loading platform of TecQuipment’s Universal Testing Machine (SM1000).
In a single shear test (one when a specimen is sheared on one cross section), the specimen can bend before it shears, this has to be accounted for to obtain good results with a double shear test, the specimen is sheared at two locations, bending is eliminated resulting in a much simpler test.
The specimen holder fits to the lower ball joint and the shear strap holder to the upper ball joint. The copper specimen is passed through the specimen holder and the shear strap. The two sections are joined by fitting the dowel through the shear strap holder and shear strap. The pump is used to increase the ram force until the specimen shears.