書誌事項
- タイトル別名
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- Fast Signal Predictions of 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 コウソク シミュレーション
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説明
This paper describes a new method for the simulations of signals noised by the presence of other materials except for test articles in eddy current testing (ECT). In the inspection of steam generator tubes in nuclear power plants, the sensor detects structures, for example support plates to fix the tubes, and deposits adhering to their outside, as well as tube defects. The signals from the structures are thought to be noises when finding the defects. The method developed here is based on a set of governing equations constructed with magnetic vector potentials, introducing a precondition that a small part of the inverse matrix of the coefficient matrix in an algebraic equation from finite elements and the potentials for the unflawed conductor model are stored. Following the reciprocity theorem, an impedance change due to a flaw, as an eddy current signal, can be computed through integration in the flaw region, and unknowns corresponding to the flaw region only are considered. It results in much smaller degrees of freedom than typical finite element approaches require, and the method provides a fast forward simulator. The fast forward simulator is tested with experimental measurements of ECT benchmark problems with noise factors mentioned above, and is compared with a conventional approach from the point of view of computational costs.
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 65 (638), 2024-2031, 1999
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
- 1390282679424793984
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- NII論文ID
- 110002375125
- 10009515442
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- NII書誌ID
- AN0018742X
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- ISSN
- 18848338
- 03875008
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- HANDLE
- 10097/53486
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- NDL書誌ID
- 4889592
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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
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可