706 アルミナ単繊維の破壊特性に及ぼす湿潤ガス環境の影響(GS-4・20 機械材料・材料加工(2))

概要

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An investigation has been carried out concerning the influence of wet environment on the fracture behavior of alumina single fiber. The alumina fiber used in this study was Altex. Tension-tension fatigue tests were conducted under sinusoidal wave form in dry air, laboratory air and wet air. Creep tests were conducted in dry air and wet air. The fatigue strength in dry air was the highest, in laboratory air was the second and in wet air was the lowest. The fracture surfaces were observed with a high-resolution field emission type scanning electron microscope. The fiber surfaces were closely examined with atomic force microscope and surface roughness of the virgin fibers and tested ones were calculated. The fracture mechanism of the fiber was discussed.
一般社団法人日本機械学会の論文
2001-03-16