Patent ID: 6647802
Filing Date: 2003-11-18
Classification: G01N

Abstract:
A creep testing fixture for applying a precise amount of constant tensile stress to a creep test specimen to allow for precise measurement of creep in the test specimen, the fixture comprising:first and second mounting grips for holding opposite ends of a test specimen; a frame supporting the first and second mounting grips for relative reciprocal movement toward and away from each other; a spring connected between the first and second mounting grips, the frame being configured to subject a test specimen held between the mounting grips to tensile stress in response to force that the spring applies to the frame; and the spring is a tensile spring and the frame and spring are configured to subject a test specimen to tensile stress in response to axially inward force that the tensile spring applies to the frame such that spring load loss over time is limited by an amount sufficient to allow for accurate tensile creep testing of the test specimen.