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Paper Abstract and Keywords
Presentation 2026-01-28 14:00
Design of a 40 kHz Prismatic Transducer with a 4 mm Square Vibrating Surface -- Investigation of Mode Separation Between Longitudinal and Flexural Vibrations Using FEM --
Yusuke Tsukamoto, Hikaru Miura, Takuya Asami (Nihon Univ.) US2025-55
Abstract (in Japanese) (See Japanese page) 
(in English) This study focuses on designing a compact bolt-clamped Langevin transducer with a 4-mm square radiating surface for use in airborne ultrasonic phased arrays. Large transducer apertures in conventional airborne sensors often cause grating lobes, limiting beam steering capability. Finite element analysis was conducted by varying the screw material and structural dimensions to identify the configuration that maximizes longitudinal-mode selectivity. The results indicate that employing a duralumin screw with L_1=16.3" " and L_2=56.2" " minimizes mode coupling, demonstrating the feasibility of achieving both miniaturization and high directivity.
Keyword (in Japanese) (See Japanese page) 
(in English) Airborne Ultrasound / Transducer / Technical Report / FEM Analysis / Mode Separation / / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 343, US2025-55, pp. 12-15, Jan. 2026.
Paper # US2025-55 
Date of Issue 2026-01-21 (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 US2025-55

Conference Information
Committee US  
Conference Date 2026-01-28 - 2026-01-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) High-intensity ultrasound, Ultrasonics, etc. 
Paper Information
Registration To US 
Conference Code 2026-01-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Design of a 40 kHz Prismatic Transducer with a 4 mm Square Vibrating Surface 
Sub Title (in English) Investigation of Mode Separation Between Longitudinal and Flexural Vibrations Using FEM 
Keyword(1) Airborne Ultrasound  
Keyword(2) Transducer  
Keyword(3) Technical Report  
Keyword(4) FEM Analysis  
Keyword(5) Mode Separation  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Yusuke Tsukamoto  
1st Author's Affiliation Nihon University (Nihon Univ.)
2nd Author's Name Hikaru Miura  
2nd Author's Affiliation Nihon University (Nihon Univ.)
3rd Author's Name Takuya Asami  
3rd Author's Affiliation Nihon University (Nihon Univ.)
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Speaker Author-1 
Date Time 2026-01-28 14:00:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2025-55 
Volume (vol) vol.125 
Number (no) no.343 
Page pp.12-15 
#Pages 4 
Date of Issue 2026-01-21 (US) 

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