2744 球圧子押込みによる多孔質セラミックスの強度低下に関する研究(S18-1 セラミックス(1),S18 セラミックスおよびセラミックス系複合材料)

概要

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Porous ceramics have a large attention as a suitable material for filters such as an enviromental photocatalytic carrier, because of its filterability and thermostability. Since damages induced by contact stress on filters cause serious degradation of their strength and life span, it is necessity to investigate residual strength after the damage. Porous ceramics were damaged beforehand by sphere indentation test, and it was done 4-point bending test. The result shows that when the peak of the load doesn't appear on the load-displacement diagram by indentation test, the decrease of the residual strength is a small. Also, the radial crack was not observed on the specimen surface after indentation test. After 4-point bending test, the fracture morphology was able to be classified into three.
社団法人日本機械学会の論文
2007-09-07