繊維機械におけるセラミック部品の強度・信頼性の向上 : セラミックディスクの破壊メカニズムの解明

概要

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In order to clarify the extreme strength of spinning fracture, the high-speed spin tests were carried out for two ceramic circular disks till they burst. On the other hand, the spinning fracture strengths were evaluated by theoretically analyzing the centrifugal stress distribution and by using the unified estimation method for ceramic strength. Also, the residual stresses on the surface of the ceramic circular disks were estimated by using the indentation flaw method (IF method) and their influences on the spinning fracture strength were studied from the viewpoint of fracture mechanics. The extreme spinning fracture strengths were successfully estimated from the 4-point bending strength by using the unified strength estimation method. The residual stress had the negligible influence on the spinning fracture strength. The ceramic circular disks were clarified to have sufficient reliability against fracture in practical service of textile machinery.
社団法人日本材料学会の論文
2001-03-15