金属疲労 S-N 曲線の基本構造にもとづく人工微小欠陥材の疲労寿命とそのばらつきの解析†

Yukitaka Murakami; Toshio Takagi; Kentaro Wada; Yoshihiro Fukushima; Hisao Matsunaga

doi:10.2472/JSMS.70.889

金属疲労 S-N 曲線の基本構造にもとづく人工微小欠陥材の疲労寿命とそのばらつきの解析^†

Translated title of the contribution: Analysis on Fatigue Life and its Scatter of Specimens Containing Small Artificial Defects with Various Sizes Based on the Essential Structure of S-N Curve

Yukitaka Murakami, Toshio Takagi, Kentaro Wada, Yoshihiro Fukushima, Hisao Matsunaga

Hydrogen Utilization Engineering

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

Abstract

The origin of fatigue life scatter was quantitatively analyzed by fatigue test of specimens containing small drill holes with various sizes. The size of the holes ranged from 40 µm to 400 µm. In several specimens, three holes with different sizes were introduced to investigate the behavior of crack growth from holes which were observed at the cycle Nf of fatigue failure from the largest hole. The dependency of fatigue life and its scatter on defect size and stress level was analyzed by the model explained in the 1st report and the factors which cause the scatter of fatigue life for other materials such as cast irons and AM materials were discussed by comparing the fatigue data and the predictions.

Translated title of the contribution	Analysis on Fatigue Life and its Scatter of Specimens Containing Small Artificial Defects with Various Sizes Based on the Essential Structure of S-N Curve
Original language	Japanese
Pages (from-to)	889-895
Number of pages	7
Journal	Clinical Neurology
Volume	70
Issue number	12
DOIs	https://doi.org/10.2472/JSMS.70.889
Publication status	Published - 2021

All Science Journal Classification (ASJC) codes

Clinical Neurology

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10.2472/JSMS.70.889

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title = "金属疲労 S-N 曲線の基本構造にもとづく人工微小欠陥材の疲労寿命とそのばらつきの解析†",

abstract = "The origin of fatigue life scatter was quantitatively analyzed by fatigue test of specimens containing small drill holes with various sizes. The size of the holes ranged from 40 µm to 400 µm. In several specimens, three holes with different sizes were introduced to investigate the behavior of crack growth from holes which were observed at the cycle Nf of fatigue failure from the largest hole. The dependency of fatigue life and its scatter on defect size and stress level was analyzed by the model explained in the 1st report and the factors which cause the scatter of fatigue life for other materials such as cast irons and AM materials were discussed by comparing the fatigue data and the predictions.",

author = "Yukitaka Murakami and Toshio Takagi and Kentaro Wada and Yoshihiro Fukushima and Hisao Matsunaga",

year = "2021",

doi = "10.2472/JSMS.70.889",

language = "日本語",

volume = "70",

pages = "889--895",

journal = "Clinical Neurology",

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T1 - 金属疲労 S-N 曲線の基本構造にもとづく人工微小欠陥材の疲労寿命とそのばらつきの解析†

AU - Murakami, Yukitaka

AU - Takagi, Toshio

AU - Wada, Kentaro

AU - Fukushima, Yoshihiro

AU - Matsunaga, Hisao

PY - 2021

Y1 - 2021

N2 - The origin of fatigue life scatter was quantitatively analyzed by fatigue test of specimens containing small drill holes with various sizes. The size of the holes ranged from 40 µm to 400 µm. In several specimens, three holes with different sizes were introduced to investigate the behavior of crack growth from holes which were observed at the cycle Nf of fatigue failure from the largest hole. The dependency of fatigue life and its scatter on defect size and stress level was analyzed by the model explained in the 1st report and the factors which cause the scatter of fatigue life for other materials such as cast irons and AM materials were discussed by comparing the fatigue data and the predictions.

AB - The origin of fatigue life scatter was quantitatively analyzed by fatigue test of specimens containing small drill holes with various sizes. The size of the holes ranged from 40 µm to 400 µm. In several specimens, three holes with different sizes were introduced to investigate the behavior of crack growth from holes which were observed at the cycle Nf of fatigue failure from the largest hole. The dependency of fatigue life and its scatter on defect size and stress level was analyzed by the model explained in the 1st report and the factors which cause the scatter of fatigue life for other materials such as cast irons and AM materials were discussed by comparing the fatigue data and the predictions.

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金属疲労 S-N 曲線の基本構造にもとづく人工微小欠陥材の疲労寿命とそのばらつきの解析^†

Abstract

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