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Paper Abstract and Keywords
Presentation 2020-05-18 13:55
Non-contact measurement of viscoelasticity of rice cake by using focused airborne ultrasound
Ryo Aoki, Marie Tabaru (Tokyo Tech) US2020-9
Abstract (in Japanese) (See Japanese page) 
(in English) In the rice cake manufacturing process, race cake is only managed by the room temperature. For high precision management, non-contact measurement of elastic properties of race cake is in demand. So far, there research about contact measurement method of elastic properties of rice cake. However, there is no reports about non-contact method. Therefore, in this report, we established non-contact and temperature controllable measurement system of viscoelastic properties of rice cake by using airborne ultrasound, Laser Doppler vibrometer (LDV), and Peltier device. Detectability of viscoelastic characteristic changes with temperature were investigated as a fundamental study.
Firstly, we developed temperature controllable system by using Peltier device within the temperature range of 0~70°C. Next, vibrations (~100 nm) ware produced by focused airborne ultrasound while changing the temperature and vibration velocities were measured by LDV. Amplitudes of displacements obtained from integral calculation were 50~300 nm. Then, Young’s moduli and viscosities were estimated by curve fitting to theoretical equation derived from Voigt model. The results showed that the Young’s moduli and viscosities were changed in the range of 35~135 MPa and 5~20 kPa・s for the temperature changes in the range of 0~70°C, and elastic characteristics increased as temperature decreased. From the results, we confirm the possibility of application to non-contact viscoelasticity measurement of rice cake using the proposed system.
Keyword (in Japanese) (See Japanese page) 
(in English) Rice cake / Non-contact measurement / Viscoelasticity / Airborne ultrasound / Acoustic radiation force / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 27, US2020-9, pp. 7-11, May 2020.
Paper # US2020-9 
Date of Issue 2020-05-11 (US) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee US  
Conference Date 2020-05-18 - 2020-05-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To US 
Conference Code 2020-05-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Non-contact measurement of viscoelasticity of rice cake by using focused airborne ultrasound 
Sub Title (in English)  
Keyword(1) Rice cake  
Keyword(2) Non-contact measurement  
Keyword(3) Viscoelasticity  
Keyword(4) Airborne ultrasound  
Keyword(5) Acoustic radiation force  
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1st Author's Name Ryo Aoki  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Marie Tabaru  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
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Speaker Author-2 
Date Time 2020-05-18 13:55:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2020-9 
Volume (vol) vol.120 
Number (no) no.27 
Page pp.7-11 
#Pages
Date of Issue 2020-05-11 (US) 


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