A tensile creep-testing apparatus for ceramic materials using simple knife-edge universal joints

Abstract

A simple method of long-term tensile creep-testing of ceramic materials is described, employing frictionless knife-edge universal joints and a gripping system which minimizes nonaxialities. The apparatus has a maximum constant load capability of 100 kg and was designed for use up to 1000 degrees C to test glass-ceramic materials. Some results are given which illustrate the reproducibility of the method, and an estimation of the errors involved in strain measurement is made.