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- 鈴木 環輝
- 日本製鉄先端技術研究所
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- 大川 鉄平
- 日本製鉄鉄鋼技術研究所
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- ステファヌス ハルヨ
- 日本原子力研究開発機構
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- 佐々木 敏彦
- 金沢大学大学院自然科学研究科
書誌事項
- タイトル別名
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- Residual stress evaluation by pulsed neutron stress measurement for cruciform welded joints treated with ultrasonic impact method
抄録
<p>The residual stress state inside the cruciform welded joints were measured using the pulsed neutron stress measurement method. The points of interest in this study are the weld toe and its interior. We also compared the cases with and without ultrasonic impact treatment (UIT), which is expected as a fatigue strength improvement technology. Furthermore, the case where tensile stress or compressive stress was applied after UIT treatment was also examined. The applied stresses at this time were 75 % or 85 % of the yield point, respectively. From the above, we considered the cause of the change in the residual stress on the surface after UIT treatment, which was clarified in the preliminary experiment, in the early stage of fatigue. As a result, the load after the UIT treatment caused plastic deformation in a part of the inside, which caused the redistribution of residual stress. It was also found that such changes in the internal residual stress state are the cause of the changes in the surface residual stress.</p>
収録刊行物
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- 日本機械学会論文集
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日本機械学会論文集 87 (894), 20-00377-20-00377, 2021
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390850247500963712
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- NII論文ID
- 130007991574
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- ISSN
- 21879761
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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