著者

村上 惇 松下 裕臣 吉識 忠継 新保 正樹

出版者

公益社団法人 日本材料学会

雑誌

材料 (ISSN:05145163)

巻号頁・発行日

vol.34, no.384, pp.1099-1104, 1985-09-15 (Released:2009-06-03)

参考文献数

27

被引用文献数

2 2

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The morphology of phase-separation and the mechanical properties of amine cured rubber-modified epoxy resins were investigated.The results of the dynamic mechanical properties and the microscopic observations indicated that the epoxy-rich matrix phase was plasticized by the dissolved rubber and the rubber-rich domains were dispersed homogeneously in the epoxy-rich matrix.The rubber-modification of epoxy resins enhanced the fracture toughness against crack initiation and caused the crack arrest. The size of the plastic-deformed region at the crack tip was correlated well with the fracture toughness against crack initiation according to Dugdal's equation.From the fatigue crack propagation (FCP) tests at a low frequency it has been shown that the presence of rubber domains introduces the interfacial debonding between the domain and the matrix as the result of stress response, which promotes the FCP at the low stress intensity factor range.

著者

格内 敏 厳 希哲 坂本 亨 村上 惇 池田 大作 藤原 紘郎

出版者

一般社団法人 日本機械学会

雑誌

関西支部講演会講演論文集 2000.75 (ISSN:24242756)

巻号頁・発行日

pp._11-53_-_11-54_, 2000-03-16 (Released:2017-06-19)

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Various implants are employed to provide osteosynthesis of the trochanteric fracture of femur by providing mechanical fixation. However, pain due to the stress concentration in the bone and new fracture are caused, when the implant does not physically suit the patient. The purpose of this study is to compare the mechanical properties between fixation implant devices of differing design by holographic interferometry.