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Fatigue failure is very common phenomenon in engineering field, and fatigue problem is more and more prominent with the development of modern social production to high speed, high temperature, high strength load. In this paper, experiments were carried out by the college students to study bending strength change rule of the mullite ceramic specimens under thermal shock, according to the college students' innovation research project of Shandong University of Science and Technology. The experiment results have shown that in the condition of air-cooling, with the increase of thermal shock temperature difference, the bending strength changed little. However, the bending strength value reduced significantly when temperature difference is 200℃ under the condition of water cooling, and the critical temperature difference of the material can be largely determined. Through the above innovative experiments, the students could master the thermal shock fatigue test approaches, and understand the effects of different heat shock factors influence on the mechanical properties of mullite ceramics.

Experiment Study on Thermal fatigue strength of Ceramic Materials - Implementation of students' innovative research project of Shandong University of Science and Technology