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| Presentation | 2022-02-24 15:10 Basic study of guided wave pulse compression by airborne ultrasound excitation Kyosuke Shimizu, Ayumu Osumi, Youichi Ito (Nihon Univ.)  US2021-72 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We have studied the non-contact material evaluation method using an airborne ultrasound phased array (AUPA) as the scanning elastic wave source technique that scans an elastic wave source in two dimensions and measures at high speed. The ultrasound emitters that construct the AUPA are difficult to emit pulsed sound waves, because it utilizes resonance drive. Therefore, the artifact and the decrease in the imaging accuracy of defects occur for the guided wave propagation imaging result using the ultrasound wave in the material. As one method to solve this problem, we have considered performing pulse compression processing using a chirp wave for the transmitted wave of the guided wave propagating in the material and visualizing the guided wave propagating image in the material as a pulse wave propagating image. In this report, for the purpose of realizing pulse compression of the guided wave by airborne ultrasound excitation, we verified the effectiveness of the pulse compression process for the guided waves propagating in the mortar sample, excited by the chirp waves emitted from AUPA. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | High-intensity aerial ultrasonic waves / Focus ultrasonic waves / Airborne ultrasound phased array / Pulse compression / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 380, US2021-72, pp. 16-20, Feb. 2022. | |
| Paper # | US2021-72 | |
| Date of Issue | 2022-02-17 (US) | |
| ISSN | 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 | US2021-72 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2022-02-24 - 2022-02-24 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Acoustic imaging, NDT, Ultrasound in medicine, Ultrasonics, etc. |
| Paper Information | |
| Registration To | US |
| Conference Code | 2022-02-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Basic study of guided wave pulse compression by airborne ultrasound excitation |
| Sub Title (in English) | |
| Keyword(1) | High-intensity aerial ultrasonic waves |
| Keyword(2) | Focus ultrasonic waves |
| Keyword(3) | Airborne ultrasound phased array |
| Keyword(4) | Pulse compression |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Kyosuke Shimizu |
| 1st Author's Affiliation | Nihon University (Nihon Univ.) |
| 2nd Author's Name | Ayumu Osumi |
| 2nd Author's Affiliation | Nihon University (Nihon Univ.) |
| 3rd Author's Name | Youichi Ito |
| 3rd Author's Affiliation | Nihon University (Nihon Univ.) |
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| Speaker | Author-1 |
| Date Time | 2022-02-24 15:10:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2021-72 |
| Volume (vol) | vol.121 |
| Number (no) | no.380 |
| Page | pp.16-20 |
| #Pages | 5 |
| Date of Issue | 2022-02-17 (US) |
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