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| Presentation | 2019-01-23 13:10 Directionality of ultrasonic probe at transmitting and receiving Yuusuke Tanaka, Yukio Ogura (Japan Probe)  US2018-104 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The directivity of the ultrasonic probe was explained by diffusion caused by the generation of edge waves during transmission and propagation time difference on the receiving surface during reception. Diffusion of edge waves becomes large in long range sound field, so high directivity of large probe is high directivity. The amount of edge waves generated depends on the medium, and hardly occurs in air. Furthermore, in the air, the edge wave hardly diffuses due to attenuation. Therefore, ultrasonic waves go straight in practical use. Directivity at reception is confirmed by simulation, and the reception signal is detected by combination of reception points. In the case of receiving from an oblique direction, since the signals cancel each other, the reception intensity is lowered. Ultrasonic waves from an oblique angle decrease the received signal intensity when the receiving surface is large, the wavelength of the received signal becomes longer, and the frequency drops. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Ultrasonic / Probe / Directivity / Edge wave / Time difference / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 118, no. 409, US2018-104, pp. 123-128, Jan. 2019. | |
| Paper # | US2018-104 | |
| Date of Issue | 2019-01-15 (US) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | US2018-104 |
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| Conference Information | |
| Committee | EA US |
| Conference Date | 2019-01-22 - 2019-01-23 |
| 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 |
| Paper Information | |
| Registration To | US |
| Conference Code | 2019-01-EA-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Directionality of ultrasonic probe at transmitting and receiving |
| Sub Title (in English) | |
| Keyword(1) | Ultrasonic |
| Keyword(2) | Probe |
| Keyword(3) | Directivity |
| Keyword(4) | Edge wave |
| Keyword(5) | Time difference |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yuusuke Tanaka |
| 1st Author's Affiliation | Japan Probe Co., Ltd. (Japan Probe) |
| 2nd Author's Name | Yukio Ogura |
| 2nd Author's Affiliation | Japan Probe Co., Ltd. (Japan Probe) |
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| Speaker | Author-1 |
| Date Time | 2019-01-23 13:10:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2018-104 |
| Volume (vol) | vol.118 |
| Number (no) | no.409 |
| Page | pp.123-128 |
| #Pages | 6 |
| Date of Issue | 2019-01-15 (US) |
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