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Paper Abstract and Keywords
Presentation 2013-11-16 09:45
An Evaluating Method for Fundamental Dynamical Parameters of Objects on a Printed Circuit Board -- Natural Frequency and Damping Ratio (2) --
Shin-ichi Wada, Keiji Koshida, Hiroaki Kubota (TMC System), Koichiro Sawa (Nippon Inst. of Tech.) EMD2013-79 Link to ES Tech. Rep. Archives: EMD2013-79
Abstract (in Japanese) (See Japanese page) 
(in English) Authors developed the mechanism which gives real vibration to electrical contacts by hammering oscillation in the vertical direction similar to real cases and studied the influences of micro-oscillating on contacts. Using an evaluating method (Method 1), the real dynamical parameters: to effective mass, effective force, and effective acceleration are obtained under the influence of external micro-oscillation. In addition another evaluating method (Method 2) reaches the real dynamical parameters: natural frequency and damping ratio. It is possible to known the values of effective mass m, effective force F and effective acceleration α0 from Method 1 in previous paper and natural frequency ω0 and damping ratio ζ from Method 2 in this paper. And it is possible to obtain the approximate dynamical properties of the objects by some equations.
Keyword (in Japanese) (See Japanese page) 
(in English) electrical contact / micro-oscillation / degradation phenomenon / acceleration / force / mass / natural frequency / damping ratio  
Reference Info. IEICE Tech. Rep., vol. 113, no. 298, EMD2013-79, pp. 19-22, Nov. 2013.
Paper # EMD2013-79 
Date of Issue 2013-11-09 (EMD) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 EMD  
Conference Date 2013-11-16 - 2013-11-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Huazhong University of Science and Technology, Wuhan, P.R.China 
Topics (in Japanese) (See Japanese page) 
Topics (in English) International Session IS-EMD2013 
Paper Information
Registration To EMD 
Conference Code 2013-11-EMD 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Evaluating Method for Fundamental Dynamical Parameters of Objects on a Printed Circuit Board 
Sub Title (in English) Natural Frequency and Damping Ratio (2) 
Keyword(1) electrical contact  
Keyword(2) micro-oscillation  
Keyword(3) degradation phenomenon  
Keyword(4) acceleration  
Keyword(5) force  
Keyword(6) mass  
Keyword(7) natural frequency  
Keyword(8) damping ratio  
1st Author's Name Shin-ichi Wada  
1st Author's Affiliation TMC System Co. Ltd. (TMC System)
2nd Author's Name Keiji Koshida  
2nd Author's Affiliation TMC System Co. Ltd. (TMC System)
3rd Author's Name Hiroaki Kubota  
3rd Author's Affiliation TMC System Co. Ltd. (TMC System)
4th Author's Name Koichiro Sawa  
4th Author's Affiliation Nippon Institute of Technology (Nippon Inst. of Tech.)
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Speaker Author-1 
Date Time 2013-11-16 09:45:00 
Presentation Time 15 minutes 
Registration for EMD 
Paper # EMD2013-79 
Volume (vol) vol.113 
Number (no) no.298 
Page pp.19-22 
Date of Issue 2013-11-09 (EMD) 

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