| Presentation | 2015-11-09 Non-contact ultrasonic imaging system using time reversal Hirotaka Saitoh, Hideyuki Nomura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Ultrasonic imaging using a pulse echo is decreasing azimuth resolution and probe of device must contact with target. In this study, to resolve the problem, non-contact ultrasonic imaging using a time reversal (TR) signal is proposed and experimentally verified. In order to realize the TR non-contact ultrasonic imaging, effects of noise in the TR signal on the focusing of sound wave in time and spatial domains must be considered. Experimental results indicated that the excluding the noise increased the signal-to-noise ration of the focusing signal. Imaging brass plates with and without an appendage were carried out as an application of the proposed method. Obtained vibration distribution images indicated that the proposed imaging method can visualize a defect on a plate, however, reducing the bandwidth of the focusing wave is necessary to improve image quality. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Time reversal / Non-contact / Focus / Ultrasonic imaging |
| Paper # | US2015-70 |
| Date of Issue | 2015-11-02 (US) |
| Conference Information | |
| Committee | US |
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| Conference Date | 2015/11/9(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagoya Ekimae Office for Inovation hub, AIST |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Chair | Youichi Ito(Nihon Univ.) |
| Vice Chair | Mami Matsukawa(Doshisha Univ.) / Nobuyuki Endoh(Kanagawa Univ.) |
| Secretary | Mami Matsukawa(Univ. of Electro-Comm.) / Nobuyuki Endoh(Univ. of Electro-Comm.) |
| Assistant | Hideyuki Hasegawa(Univ. of Toyama) |
| Paper Information | |
| Registration To | Technical Committee on Ultrasonics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Non-contact ultrasonic imaging system using time reversal |
| Sub Title (in English) | |
| Keyword(1) | Time reversal |
| Keyword(2) | Non-contact |
| Keyword(3) | Focus |
| Keyword(4) | Ultrasonic imaging |
| 1st Author's Name | Hirotaka Saitoh |
| 1st Author's Affiliation | The University of Electro-Communications(UEC) |
| 2nd Author's Name | Hideyuki Nomura |
| 2nd Author's Affiliation | The University of Electro-Communications(UEC) |
| Date | 2015-11-09 |
| Paper # | US2015-70 |
| Volume (vol) | vol.115 |
| Number (no) | US-299 |
| Page | pp.pp.29-34(US), |
| #Pages | 6 |
| Date of Issue | 2015-11-02 (US) |