書誌事項
- タイトル別名
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- Inverse Problem Analyses with Noised Signals in Eddy Current Testing.
- ノイズ オ フクム カリュウタンショウ シンゴウ ノ ギャクモンダイ カイセキ
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This paper demonstrates crack reconstruction from the relative signals, which overlap with noises in eddy current testing. A method for the reconstruction from the signals, a kind of inverse problem, has been developed with fast signal predictions and the steepest descent algorithm. The signal predictions use a pre-computed unflawed database approach based on edge-based finite elements and the reciprocity theorem.This approach makes it possible that the problem domain of an electromagnetic field is reduced to a small region where a crack/cracks possibly exist.In the inspection of steam generator tubes in nuclear power plants, this test detects deposits on the surfaces of thetubes and structures to fix the tubes such as support sheets or plates, and rigs, as well as defects.The signals from the structures are thought to be noises when finding out the defects.Crack profile identification is given from the crack signals with residual noises, which remain after multi-frequency processing of the signals disturbed by the presence of copper/magnetic deposits and support plantes.
収録刊行物
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- 日本機械学会論文集A編
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日本機械学会論文集A編 66 (641), 63-70, 2000
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
- 1390001204447948032
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- NII論文ID
- 110002373300
- 10007390644
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- NII書誌ID
- AN0018742X
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- ISSN
- 18848338
- 03875008
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- HANDLE
- 10097/53484
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- NDL書誌ID
- 4970790
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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
- IRDB
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可