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Paper Abstract and Keywords
Presentation 2013-03-01 15:35
Damage shape evaluation system of electrical contacts and investigation of material transfer and erosion phenomena
Keisuke Takahashi, Daichi Kawamura, Yuya Hirano, Makoto Hasegawa (Chitose Inst. of Science and Tech.) EMD2012-118 Link to ES Tech. Rep. Archives: EMD2012-118
Abstract (in Japanese) (See Japanese page) 
(in English) Contact surfaces of mechanical relays and switches are often damaged by arc discharges and/or mechanical wear during switching operations. Conventionally, erosion and transfer characteristics of various contact materials under different load conditions have been mainly studied based on observation and evaluation of contact surfaces after switching operation tests. On the other hand, a further detailed study will become possible if we can observe and numerically evaluate a changing process of surface damages (especially, growth of a crater and/or a pip) on contact surfaces during switching operations. For that purpose, an evaluation system of contact surface damages which employs an optical cross-section method is being constructed. In this paper, Ag contacts and AgSnO2 contacts were operated to break a DC inductive 14V-2A or 3A load current for 50,000 operations, and changes of contact surface shapes were observed and numerically evaluated with this system during the switching operations.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical cross-section method / electrical contacts / arc discharge / material transfer / erosion / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 453, EMD2012-118, pp. 37-40, March 2013.
Paper # EMD2012-118 
Date of Issue 2013-02-22 (EMD) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 EMD2012-118 Link to ES Tech. Rep. Archives: EMD2012-118

Conference Information
Committee EMD  
Conference Date 2013-03-01 - 2013-03-01 
Place (in Japanese) (See Japanese page) 
Place (in English) Nippon Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Graduation and master's thesis 
Paper Information
Registration To EMD 
Conference Code 2013-03-EMD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Damage shape evaluation system of electrical contacts and investigation of material transfer and erosion phenomena 
Sub Title (in English)  
Keyword(1) Optical cross-section method  
Keyword(2) electrical contacts  
Keyword(3) arc discharge  
Keyword(4) material transfer  
Keyword(5) erosion  
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Keyword(8)  
1st Author's Name Keisuke Takahashi  
1st Author's Affiliation Chitose Institute of Science and Technology (Chitose Inst. of Science and Tech.)
2nd Author's Name Daichi Kawamura  
2nd Author's Affiliation Chitose Institute of Science and Technology (Chitose Inst. of Science and Tech.)
3rd Author's Name Yuya Hirano  
3rd Author's Affiliation Chitose Institute of Science and Technology (Chitose Inst. of Science and Tech.)
4th Author's Name Makoto Hasegawa  
4th Author's Affiliation Chitose Institute of Science and Technology (Chitose Inst. of Science and Tech.)
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Speaker Author-1 
Date Time 2013-03-01 15:35:00 
Presentation Time 15 minutes 
Registration for EMD 
Paper # EMD2012-118 
Volume (vol) vol.112 
Number (no) no.453 
Page pp.37-40 
#Pages
Date of Issue 2013-02-22 (EMD) 


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