小球衝突に対するセラミックス部材の破壊形態と強度特性について

概要

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In order to clarify the conditions for fracture morphology of monolithic ceramics subjected to a solid particle collision, the stress analysis of ceramic circle plate subjected to compressive contact load by a small ball was carried out for the various circle plate thicknesses. The maximum stresses of three critical points were compared in the relation with the plate thickness. As fracture criteria the stress intensity factor on the basis of stress distribution were analyzed for each critical points. The behaviors of fracture morphology depending to the plate thickness were successfully clarified by estimating K_I for fracture criteria. On the basis of small ball collision test results, the collision velocity, which converted from impact load, can express the conditions for the fracture morphology. The critical collision velocity is found to change depending to plate thickness and fracture toughness of ceramics.
一般社団法人日本機械学会の論文
2000-09-25