書誌事項
- タイトル別名
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- Fracture Mechanical Estimation for the Maximum Defect Size Rendered Harmless by Peening for High Tensile Steel Welded Joint Containing a Surface Defect at the Weld Toe
- コウチョウリョクコウ ヨウセツブ ニ ショウジタ ヒョウメン ケッカン ニ タイスル ピーニング ニ ヨル ムガイカ カノウ ナ ケッカン スンポウ ノ ハカイ リキガクテキ ヒョウカ
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<p>The purpose of this study is to estimate the acceptable defect size αmax after needle peening (NP) and laser peening (LP) for a high tensile steel welded joint containing a surface defect on a weld toe. The magnitude of the relationship between the positive value of the stress intensity factor range ΔKT and the threshold stress intensity factor range ΔKth was compared to determine whether the semi-circular crack propagated or not. The value of ΔKT was evaluated from the applied stress distribution and residual stress distribution using the finite element analysis method. The value of ΔKth was evaluated considering a local stress ratio in addition to a crack size. The estimation results of αmax of post NP and LP treatment were both consistent with experimental results. The new estimation method could provide safer αmax than that of former method. </p>
収録刊行物
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- 材料
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材料 70 (6), 465-472, 2021-06-15
公益社団法人 日本材料学会
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詳細情報 詳細情報について
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- CRID
- 1390006973365628544
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- NII論文ID
- 130008054277
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- NII書誌ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL書誌ID
- 031578976
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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
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可