Abstract
Thermal shock strength of carbon–carbon composite has not been evaluated yet. This paper presents it by laser irradiation technique newly developed for ceramics. Traditionally adapted quenching test has a big difficulty in which heat transfer coefficient is very unstable under the quenching process. To avoid this problem, laser irradiation method was proposed and applied effectively to several ceramics. Thermal shock strength of carbon–carbon composite was evaluated by laser irradiation method and the critical laser power density which causes the material’s fracture was obtained. It was concluded that the critical power density can be a new measure to evaluate thermal shock strength.
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