Biaxial tensile testing apparatus and a test piece for tensile test biaxial

摘要

PROBLEM TO BE SOLVED: To provide a biaxial tension test device which gives tensile force to a thin tabular test piece to obtain experimental data on even stress-strain at the center part in the surface direction of a part to be measured of the test piece.;SOLUTION: A test piece 1 includes: a rectangular part 2 to be measured; thick-shaped tabs 3, 4, 5 which are formed at marginal parts of the respective sides of the part to be measured, and project to at least one of the plate thickness directions from the marginal part of the part to be measured. A test piece chuck part 8 includes: grip jigs 10, 12, 13 which give the tensile force to the part to be measured by arranging tabs of the respective sides of the test piece in a holding groove and engaging the marginal parts of the tabs rising from the part to be measured with the inner wall of the holding groove to move in the action direction of the tensile force; and grip jig adjustment means 9a, 9b, 11, 15, 16 for adjusting the action direction of the tensile force of the grip jigs to the part to be measured so that the tensile force is evenly given to the longitudinal directions of the respective sides of the part to be measured even when the rectangular shape of the part to be measured expands.;COPYRIGHT: (C)2012,JPO&INPIT