| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2013-02-26 |
| タイトル |
|
|
タイトル |
Location of a defect in a concrete block by a non-destructive technique |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Non-destructive measurement |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Vibration |
| 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 |
Abe, Masato
Fujioka, Toyota
Nagata, Yoshifumi
|
| 著者(機関) |
|
|
値 |
CIS., Iwate University |
| 登録日 |
|
|
日付 |
2013-02-26 |
| 書誌情報 |
Acoustical Science and Technology
巻 23,
号 6,
p. 308-312,
発行日 2002-01-01
|
| 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 |
This paper describes a method to estimate the position of a crack in a concrete block using several vibration pick-ups. An array of vibration pick-ups is attached on the concrete block, and a vibration pulse is forced by using a small hammer. If there is a crack, a reflection wave is generated from the position of the crack. Therefore, conventional methods to estimate the position of vibration source seems to be useful for this purpose. However, since the concrete block is elastic, there are three wave propagation modes; the surface wave mode, the primary wave mode and the secondary wave mode. Since the necessary primary wave mode is not significant in magnitude, we cannot estimate the position by the conventional methods. To increase the S/N, we had already proposed a method to eliminate the first-coming surface wave. However, the method was insufficient to achieve a higher S/N. Therefore, this paper proposes a new method to achieve a better location of a crack. Some experiments were carried out, and good results were obtained. |
| 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.23.308 |
| 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 |
ast-v23n6p308-312.pdf (324.2 kB)
