FRACTURE MECHANICS APPROACH FOR THE EFFECT OF STRESS RATIO OF CARBURIZED STEELS.

Chitoshi Masuda; Satoshi Nisijima; Etsuo Takeuchi; Yoshihisa Tanaka; Akira Ishii

FRACTURE MECHANICS APPROACH FOR THE EFFECT OF STRESS RATIO OF CARBURIZED STEELS.

Chitoshi Masuda^*, Satoshi Nisijima, Etsuo Takeuchi, Yoshihisa Tanaka, Akira Ishii

^*Corresponding author for this work

Waseda Research Institute for Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

To make a quantitative analysis of the effect of stress ratio on the fatigue properties for carburized steel, the fatigue properties and fatigue fracture mechanism were examined for 2 carburized steels. Carburizing, quenching and tempering were performed at one condition, and the fatigue strength was evaluated up to 10**8 cycles under uniaxial loading of two stress ratios, R equals minus 1 and 0, at room temperature in laboratory air. The threshold stress intensity factor when a mode I crack begins to grow was linearly related to (1-R)** gamma for the two carburized steels, and by a similar relation, the fatigue life can be predicted in the long life region over about 10**6. The lope on the Haigh diagram was discussed by fracture mechanics.

Original language	English
Pages (from-to)	841-846
Number of pages	6
Journal	Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume	52
Issue number	476
Publication status	Published - 1986 Apr

ASJC Scopus subject areas

Mechanical Engineering

Cite this

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abstract = "To make a quantitative analysis of the effect of stress ratio on the fatigue properties for carburized steel, the fatigue properties and fatigue fracture mechanism were examined for 2 carburized steels. Carburizing, quenching and tempering were performed at one condition, and the fatigue strength was evaluated up to 10**8 cycles under uniaxial loading of two stress ratios, R equals minus 1 and 0, at room temperature in laboratory air. The threshold stress intensity factor when a mode I crack begins to grow was linearly related to (1-R)** gamma for the two carburized steels, and by a similar relation, the fatigue life can be predicted in the long life region over about 10**6. The lope on the Haigh diagram was discussed by fracture mechanics.",

author = "Chitoshi Masuda and Satoshi Nisijima and Etsuo Takeuchi and Yoshihisa Tanaka and Akira Ishii",

year = "1986",

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AU - Takeuchi, Etsuo

AU - Tanaka, Yoshihisa

AU - Ishii, Akira

PY - 1986/4

Y1 - 1986/4

N2 - To make a quantitative analysis of the effect of stress ratio on the fatigue properties for carburized steel, the fatigue properties and fatigue fracture mechanism were examined for 2 carburized steels. Carburizing, quenching and tempering were performed at one condition, and the fatigue strength was evaluated up to 10**8 cycles under uniaxial loading of two stress ratios, R equals minus 1 and 0, at room temperature in laboratory air. The threshold stress intensity factor when a mode I crack begins to grow was linearly related to (1-R)** gamma for the two carburized steels, and by a similar relation, the fatigue life can be predicted in the long life region over about 10**6. The lope on the Haigh diagram was discussed by fracture mechanics.

AB - To make a quantitative analysis of the effect of stress ratio on the fatigue properties for carburized steel, the fatigue properties and fatigue fracture mechanism were examined for 2 carburized steels. Carburizing, quenching and tempering were performed at one condition, and the fatigue strength was evaluated up to 10**8 cycles under uniaxial loading of two stress ratios, R equals minus 1 and 0, at room temperature in laboratory air. The threshold stress intensity factor when a mode I crack begins to grow was linearly related to (1-R)** gamma for the two carburized steels, and by a similar relation, the fatigue life can be predicted in the long life region over about 10**6. The lope on the Haigh diagram was discussed by fracture mechanics.

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FRACTURE MECHANICS APPROACH FOR THE EFFECT OF STRESS RATIO OF CARBURIZED STEELS.

Abstract

ASJC Scopus subject areas

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