| Presentation | 2019-01-23 Analysis of Ultrasonic Propagation and Virtual Images in Air-coupled Ultrasonic Testing Yuusuke Tanaka, Masaaki Noji, Nobuhiro Tsuge, Yukio Ogura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A virtual image may be generated near the defect in defect measurement by aerial ultrasonic waves. The virtual image is caused by multiple reflections in the specimen and spreading of ultrasonic waves, which is due to the fluctuation in the amplitude due to the reception of the spread signal with a large probe. In the simulation, ultrasonic wave propagation was analyzed, three of the edge wave, the direct wave which passed near the defect part, and the ultrasonic wave which was multiply reflected under the defect and spread were received at different timings. Although we used a large focused ultrasonic probe for the receiving probe, we considered that it is appropriate to use a small receiving probe so that the amplitude fluctuation does not affect the virtual image. Ultrasonic measurement was actually performed with a probe whose receiving surface was made small, and virtual images could be reduced. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Ultrasonic / Non-contact / Air / Virtual image / Receiving waveform |
| Paper # | US2018-105 |
| Date of Issue | 2019-01-15 (US) |
| Conference Information | |
| Committee | EA / US |
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| Conference Date | 2019/1/22(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Doshisha Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | [Joint Meeting on Acoustics and Ultrasonics Subsociety] Engineering/Electro Acoustics, Ultrasonics, and Related Topics |
| Chair | Suehiro Shimauchi(Kanazawa Inst. of Tech.) / Shinichi Takeuchi(Toin Univ. of Yokohama) |
| Vice Chair | Kenichi Furuya(Oita Univ.) / Kanji Watanabe(Akita Pref. Univ.) / Minoru Kurosawa(Tokyo Inst. of Tech.) / Jun Kondo(Shizuoka Univ.) |
| Secretary | Kenichi Furuya(Shizuoka Inst. of Science and Tech.) / Kanji Watanabe(NHK) / Minoru Kurosawa(Univ. of Tokyo) / Jun Kondo(Kanagawa Univ.) |
| Assistant | Keisuke Imoto(Ritsumeikan Univ.) / Daisuke Morikawa(Toyama Pref Univ.) / Daisuke Koyama(Doshisha Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics / 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) | Analysis of Ultrasonic Propagation and Virtual Images in Air-coupled Ultrasonic Testing |
| Sub Title (in English) | |
| Keyword(1) | Ultrasonic |
| Keyword(2) | Non-contact |
| Keyword(3) | Air |
| Keyword(4) | Virtual image |
| Keyword(5) | Receiving waveform |
| 1st Author's Name | Yuusuke Tanaka |
| 1st Author's Affiliation | Japan Probe Co., Ltd.(Japan Probe) |
| 2nd Author's Name | Masaaki Noji |
| 2nd Author's Affiliation | Japan Probe Co., Ltd.(Japan Probe) |
| 3rd Author's Name | Nobuhiro Tsuge |
| 3rd Author's Affiliation | Japan Probe Co., Ltd.(Japan Probe) |
| 4th Author's Name | Yukio Ogura |
| 4th Author's Affiliation | Japan Probe Co., Ltd.(Japan Probe) |
| Date | 2019-01-23 |
| Paper # | US2018-105 |
| Volume (vol) | vol.118 |
| Number (no) | US-409 |
| Page | pp.pp.129-133(US), |
| #Pages | 5 |
| Date of Issue | 2019-01-15 (US) |