Patent ID: 9091619
Filing Date: 2015-07-28
Classification: G01N

Abstract:
1. A test fixture for determining circumferential shear properties of an arcuate test specimen, comprising: an outer fixture to which a test load is applied and configured to be coupled to an outer load plate having an arcuate shape and attached to an outer side of a test specimen having an arcuate shape, the outer fixture being rotatably mounted on a central pin and including an rocker arm; a side plate for mechanically couple the side of the outer fixture to the side of the outer load plate and transferring the test load from the outer fixture to the outer load plate; an inner fixture configured to be coupled to an inner side of the test specimen, the inner fixture being rotatably mounted on the central pin and including a load arm extending in a direction opposite the rocker arm; the inner fixture and the outer fixture being configured such that application of the test load to the rocker arm and the load arm causes rotation thereof about the central pin producing circumferential movement of the inner side relative to the outer side and inducing a circumferential shear load in the test specimen.