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Nondestructive technique for estimating crack positions in a concrete structure by subtraction of the surface-wave component
https://iwate-u.repo.nii.ac.jp/records/10264
https://iwate-u.repo.nii.ac.jp/records/10264fd02e8ea-b201-4e95-a65f-02677bcca20b
名前 / ファイル | ライセンス | アクション |
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ast-v28n5p310-318.pdf (748.8 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2013-02-26 | |||||
タイトル | ||||||
タイトル | Nondestructive technique for estimating crack positions in a concrete structure by subtraction of the surface-wave component | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Nondestructive measurement | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Elastic wave | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Multiple sensors | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Beamforming | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Murakami, Takeshi
× Murakami, Takeshi× Fujioka, Toyota× Nagata, Yoshifumi× Abe, Masato |
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著者(機関) | ||||||
Faculty of Engineering, Iwate University | ||||||
登録日 | ||||||
日付 | 2013-02-26 | |||||
書誌情報 |
Acoustical Science and Technology 巻 28, 号 5, p. 310-318, 発行日 2007-01-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1346-3969 | |||||
Abstract | ||||||
内容記述タイプ | Other | |||||
内容記述 | In this paper, we describe a method for estimating a crack position in a concrete structure using several accelerometers. An array of accelerometers is attached to the concrete structure and an impact is made on the concrete surface using a small impulse hammer. A reflection wave is generated from the crack position if a crack exists. Conventional methods for estimating the reflection point might seem to be useful for the detection of cracks. Because the concrete structure is elastic, however, it has three wave-propagation modes: the surface-wave mode, the primary-wave mode, and the secondary-wave mode. We cannot estimate the position using conventional methods because the necessary primary-wave mode is weaker than the surface-wave mode. To estimate the crack position precisely, we have already proposed two methods for eliminating the surface-wave and side-wall reflections. However, elimination using those methods was insufficient because they sometimes indicated a peak at a position where no crack existed. Therefore, in this paper, we propose a new method for estimating the surface wave more precisely to suppress such peaks. Some experiments were carried out, yielding better results. | |||||
出版者 | ||||||
出版者 | The Acoustical Society of Japan | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1250/ast.28.310 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |