書誌事項
- タイトル別名
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- Location of Corrosion Damage on the Floor Plate of a Cylindrical Storage Tank by Lamb Wave Acoustic Emission -Source Location Accuracy of Artificial Sources-
- ラムハ AE オ モチイタ エントウ タンク ソコイタ フショク ソンショウ イチ ノ ヒョウ テイ ジンコウ オンゲン オ モチイタ イチヒョウ テイセイド
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On-site study for the source location of artificial acoustic sources on the floor plate of a cylindrical storage tank of 32.98 m diameter was performed. We monitored Lamb wave AEs from artificial sources on the floor plate inside the tank using four types of AE sensors with different center frequencies mounted on the terrace of the annular plate. Among the sensors, only the one with a center frequency of 30 kHz monitored the Lamb wave AEs from 15 artificial sources (slight impacts) on the one radial line and 5 sources on the annular plates along a quarter circumferential line. AE sources were located from the arrival time differences of Ao-Lamb waves using two kinds of location scheme, i.e., a virtual source scanning method developed in-house and a conventional time-of-flight method. Fifteen artificial sources on the radial line were located within 3.2 m error from the given locations. Five artificial sources along the quarter circumferential line were located within 2.9 m error. These sources, however, tend to be located toward to the tank center. Location accuracy was discussed in relation to the propagation path and attenuation of the Lamb wave.
収録刊行物
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- 非破壊検査
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非破壊検査 54 (5), 259-264, 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
- 1390282681469957504
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- NII論文ID
- 130004458072
- 10015530229
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- NII書誌ID
- AN00208370
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- NDL書誌ID
- 7348503
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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