SCC Monitoring of Chloride Droplets on Thin SUS304 Plate Specimens by Analysis of Continuous Recorded AE Waveform
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- Ito Kaita
- Department of Materials Engineering, The University of Tokyo
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- Yamawaki Hisashi
- National Institute for Materials Science
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- Masuda Hiroyuki
- National Institute for Materials Science
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- Shiwa Mitsuharu
- National Institute for Materials Science
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- Enoki Manabu
- Department of Materials Engineering, The University of Tokyo
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An acoustic emission (AE) monitoring method for chloride stress corrosion cracking (SCC) in SUS304 stainless steel has been proposed to investigate this mechanism. The method combines a droplet SCC monitoring system and an AE system capable of continuous waveform data acquisition and storage. MgCl2 droplets were placed on a thin plate specimen of SUS304 to induce SCC. Since detected AE waveforms had small amplitudes with large noises, a means of noise filtering was developed to extract these features, based on time-frequency analysis of the continuous waveform. About 200 AE events were taken out after filtering. SEM observation showed that the AE source was attributable to transgranular SCC which cannot be detected by conventional AE monitoring systems. Therefore the new method demonstrated high sensitivity for the SCC monitoring.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 51 (8), 1409-1413, 2010
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679227276416
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- NII論文ID
- 10026513546
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- NII書誌ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BC3cXht1ahsbnF
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 10768757
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可