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Paper Abstract and Keywords
Presentation 2011-02-18 13:05
Peculiar Phenomena for Increase in Friction Coefficient due to Application of Lubrication
Terutaka Tamai, Shigeru Sawada (Mie Univ.), Yasuhiro Hattori (AN Lab.) R2010-42 EMD2010-143 Link to ES Tech. Rep. Archives: EMD2010-143
Abstract (in Japanese) (See Japanese page) 
(in English) For tin plated connector contacts, it was found that friction coefficient at lubricated contacts was higher than the friction coefficient at non lubricated contacts. This is very different from common knowledge of lubrication. In this paper, size of true contact area of static contact condition was discussed by FEM analysis under conditions for both lubricated and non lubricated contacts between platinum (Pt) hemisphere and tin (Sn) plated flat. In the result, the contact area with lubricant become larger than non lubricated contacts was clarified. This is due to sinking depth of the sphere into tin plated layer. Projected area to fretting direction of the sunken contact surface was calculated by geometrical contact model. From these discussion, it was concluded that the increase in friction coefficient with lubricant was not caused by increase in sdhesion area but by increase in depth of the contact trace.
Keyword (in Japanese) (See Japanese page) 
(in English) connector / plated tin / friction coefficient / lubrication / true contact area / fretting / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 416, EMD2010-143, pp. 1-6, Feb. 2011.
Paper # EMD2010-143 
Date of Issue 2011-02-11 (R, 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)
Download PDF R2010-42 EMD2010-143 Link to ES Tech. Rep. Archives: EMD2010-143

Conference Information
Committee EMD R  
Conference Date 2011-02-18 - 2011-02-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Shizuoka Univ. (Hamamatsu) 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMD 
Conference Code 2011-02-EMD-R 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Peculiar Phenomena for Increase in Friction Coefficient due to Application of Lubrication 
Sub Title (in English)  
Keyword(1) connector  
Keyword(2) plated tin  
Keyword(3) friction coefficient  
Keyword(4) lubrication  
Keyword(5) true contact area  
Keyword(6) fretting  
1st Author's Name Terutaka Tamai  
1st Author's Affiliation Mie University (Mie Univ.)
2nd Author's Name Shigeru Sawada  
2nd Author's Affiliation Mie University (Mie Univ.)
3rd Author's Name Yasuhiro Hattori  
3rd Author's Affiliation AutoNetworks Technolory, Ltd. (AN Lab.)
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Date Time 2011-02-18 13:05:00 
Presentation Time 25 
Registration for EMD 
Paper # IEICE-R2010-42,IEICE-EMD2010-143 
Volume (vol) IEICE-110 
Number (no) no.415(R), no.416(EMD) 
Page pp.1-6 
#Pages IEICE-6 
Date of Issue IEICE-R-2011-02-11,IEICE-EMD-2011-02-11 

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