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Global Monitoring of Large Concrete Structures Using Acoustic Emission and Ultrasonic Techniques: Case Study |
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| Authors: | Tomoki Shiotani Dimitrios G Aggelis Osamu Makishima |
| Affiliation: | 1Associate Professor, Dept. of Urban Management, Graduate School of Engineering, Kyoto Univ. C1-2-236, Kyoto-Daigaku-Katsura, Nishikyo-Ku, Kyoto 615-8540, Japan. E-mail: shiotani@toshi.kuciv.kyoto-u.ac.jp 2Assistant Professor, Dept. of Materials Science and Engineering, Univ. of Ioannina, Greece; formerly, Ph.D. Research Fellow, Research Institute of Technology, Tobishima Corp., Kimagase 5472, Noda-shi, Chiba 270-0222, Japan. E-mail: daggelis@cc.uoi.gr 3Civil Engineering Headquarters, Tobishima Corp., 2-Banchi, Sanbancho, Chiyoda-ku, Tokyo, 102-8332, Japan. E-mail:osamu_makishima@tobishima.co.jp |
| Abstract: | Global monitoring of civil structures is a demanding challenge for engineers. Acoustic emission (AE) is one of the techniques that have the potential to inspect large volumes with transducers placed in strategic locations of the structure. In this paper, the AE technique is used to characterize the structural condition of a concrete bridge. The evaluation of AE activity leads to information about any specific part of the structure that requires attention. Consequently, more detailed examinations can be conducted once the target area is selected. In this case, wave propagation velocity was used as a means to evaluate, in more detail, the condition of the region indicated by the AE analysis. |
| Keywords: | Acoustic techniques Ultrasonic methods Bridges Concrete Damage Nondestructive tests Strain measurement Wave velocity Monitoring |