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Thermal Shock Strength of Carbon-Carbon Composite by Laser Irradiation Technique Based on Shear Strength Criterion

Hong-Wei Li, Shigeyasu Amada, Shigeru Akiyama

Fusion Science and Technology / Volume 40 / Number 3 / Pages 265-273

November 2001

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The laminated carbon-carbon (C/C) composite is candidate material for plasma-facing components in fusion reactors. Its thermal shock strength must be evaluated for an application to the components facing the high-temperature plasma field. However, few studies have been done. A laser irradiation method newly proposed was applied effectively to lamination of C/C composite for the evaluation of thermal shock strength by subjecting a heat flux up to 27 J/mm2 on the specimen surface. By introducing the critical power density at which the material fracture occurs, thermal shock strength was obtained. It was concluded that the critical power density could be a new measure to evaluate thermal shock strength for laminated C/C composite.

 
 
 
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