書誌事項
- タイトル別名
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- GS0227-112 Fatigue Life of Shape Memory Alloy Thin Wires in Hydrogen Environments
抄録
In this study, the fatigue behavior of TiNi alloy under various hydrogen environments was investigated by using thin wires with the diameter of 0.7 mm. In particular, the effect of frequency in hydrogen environments was investigated. Fatigue tests with stress ratio of R=0.1 were conducted in four kinds of environments: NaOH solution with hydrogen charging (current density J=127 mA/mm^2 and 0.0254 mA/mm^2), NaOH solution without charging, and pure water. Fatigue life decreased in these all hydrogen environments than in air. The effect of hydrogen charging current density on fatigue life was very small. The effect of frequency in current density J=127 mA/mm^2 was similar to that in ordinary metal corrosion fatigue, while in current density J=0.0254 mA/mm^2, the frequency effect was very small in the range of stress amplitude above fatigue limit in air, and the fatigue life depended on number of cycles. Therefore, life prediction by net stress model was conducted for current density J=127 mA/mm^2. As a result, the predictions agreed with the test results.
収録刊行物
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- M&M材料力学カンファレンス
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M&M材料力学カンファレンス 2015 (0), _GS0227-11-_GS0227-11, 2015
一般社団法人 日本機械学会
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詳細情報
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- CRID
- 1390282680851346048
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- NII論文ID
- 110010053384
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- ISSN
- 24242845
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可