315 鉄鋼材料における不安定脆性破壊の確率と固有距離

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概要

• 論文の詳細を見る

• This paper presents a procedure for numerical quantifying the probability of brittle failures in steels controlled by size distribution of initiated microcracks. It shows how the fracture probability varies with the stress intensity factor, the temperature, and with the deformation characteristics of steel. The application of the proposed method on Ni-Cr steel demonstrated very good agreement of predicted temperature dependence of scatter in fracture toughness with experimental results. Controlling micromechanism of initiation and propagation of brittle fracture and its stages were identified from results of fractography analysis. Newly, using two ways the characteristic distance as the radial distance from the crack tip where the microcrack initiation is most probable has been calculated in dependence on temperature.

• 一般社団法人日本機械学会の論文
• 2000-10-05

著者

• 白鳥 正樹

  Department Of Mechanical Engineering And Materials Science Yokohama National University

• Bohumir Strnadel

  Technical University of Ostrava, Department of Materials Engineering

• Nedbal Ivan

  Czech Technical University of Prague, Department of Materials

• Prioul Claude

  Ecole Centrale Paris, Laboratoire de Mecanique des Sols, Structures et Materiaux, Voie des Vignes

• Nedbal Ivan

  Czech Technical University Of Prague Department Of Materials

• Prioul Claude

  Ecole Centrale Paris Laboratoire De Mecanique Des Sols Structures Et Materiaux Voie Des Vignes

• Bohumir Strnadel

  Technical University Of Ostrava Department Of Materials Engineering

関連論文

• 315 鉄鋼材料における不安定脆性破壊の確率と固有距離
• Statistical Aspects of Brittle Fracture in Low-Alloyed Steels(Fatigue & Fracture)

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