An unsymmetric double cantilever beam test for interfacial fracture toughness determination

An unsymmetric double cantilever beam test is described and its suitability for the determination of interfacial fracture toughness is evaluated. The test specimen consists of a beam type geometry comprised of two materials, one ‘top’ and one ‘bottom’, with a crack at one end along the bimaterial interface. The specimen is loaded in a splitting fashion similar to that of a conventional double cantilever beam test. Due to the dissimilar in-plane...