書誌事項
- タイトル別名
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- Fatigue Crack Detection Method with Strain Gages and Theory of Elasticity for a Notch of Actual Thin Plate Structures under In-Plane Loading
- ヒズミ ゲージ ト ダンセイロン オ モチイタ メン ナイ カジュウ オ ウケル ジツ コウゾウブツ ウスイタ キリカキ ブ ニ オケル ヒロウ キレツ ケンチホウ
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A practical method is proposed for in-situ fatigue crack detection in actual notched structures. This method is available for cases when the initiation position and propagation direction of a crack are uncertain and the load direction or load mode changes. In the present method, the stress fields near a notch root are estimated, using the general stress function in a polar coordinate system and the stress values obtained from strain gages around the notch root. The stress fields are characterized by the residual stress due to plastic deformation around a fatigue crack. Therefore, not only a propagating crack but also a non-propagating crack can be detected from the characteristic stress field. Moreover, the detection limitation is subject to the relative strength of the residual stress field to an elastic stress field due to loads. The fatigue experiment of a notched specimen of steel was carried out, in which a 0.33mm long crack was detected in a notch whose radius was 12.5mm.
収録刊行物
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- 非破壊検査
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非破壊検査 54 (4), 197-205, 2005
一般社団法人 日本非破壊検査協会
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詳細情報 詳細情報について
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- CRID
- 1390001206494063104
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- NII論文ID
- 130004458069
- 10015577185
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- NII書誌ID
- AN00208370
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- NDL書誌ID
- 7300650
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- ISSN
- 03675866
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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
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可