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| Presentation | 2011-11-17 16:50 An Experimental Study on Evaluation of Contact Surface Damages with an Optical Cross-Section Method Keisuke Takahashi, Makoto Hasegawa (Chitose Inst. of Science & Tech.)  EMD2011-84 Link to ES Tech. Rep. Archives: EMD2011-84 |
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| 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. A further detailed study will become possible if we can observe, and preferably, 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 by way of an optical cross-section method is being constructed. In this paper, Ag contacts were operated to break a DC inductive 14V-2A load current for 50,000 operations. During the switching operations, changes in a surface profile of the movable (cathode) electrode (a crater growth process) were observed with the optical cross-section method at every 2000 operations. A surface of the counterpart stationary (anode) electrode (a pip growth process) was also observed with another camera system. From the results, certain changes in both electrode surfaces were able to observed during the switching operations. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | optical cross-section method / electrical contacts / arc discharge / crater shape / material transfer / erosion / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 299, EMD2011-84, pp. 91-96, Nov. 2011. | |
| Paper # | EMD2011-84 | |
| Date of Issue | 2011-11-10 (EMD) | |
| ISSN | Print edition: ISSN 0913-5685 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 | EMD2011-84 Link to ES Tech. Rep. Archives: EMD2011-84 |
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| Conference Information | |
| Committee | EMD |
| Conference Date | 2011-11-17 - 2011-11-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Akita Univ. Tegata Campus |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | International Session IS-EMD2011 |
| Paper Information | |
| Registration To | EMD |
| Conference Code | 2011-11-EMD |
| Language | English |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Experimental Study on Evaluation of Contact Surface Damages with an Optical Cross-Section Method |
| Sub Title (in English) | |
| Keyword(1) | optical cross-section method |
| Keyword(2) | electrical contacts |
| Keyword(3) | arc discharge |
| Keyword(4) | crater shape |
| Keyword(5) | material transfer |
| Keyword(6) | erosion |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Keisuke Takahashi |
| 1st Author's Affiliation | Chitose Institute of Science and Technology (Chitose Inst. of Science & Tech.) |
| 2nd Author's Name | Makoto Hasegawa |
| 2nd Author's Affiliation | Chitose Institute of Science and Technology (Chitose Inst. of Science & Tech.) |
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| Speaker | Author-1 |
| Date Time | 2011-11-17 16:50:00 |
| Presentation Time | 20 minutes |
| Registration for | EMD |
| Paper # | EMD2011-84 |
| Volume (vol) | vol.111 |
| Number (no) | no.299 |
| Page | pp.91-96 |
| #Pages | 6 |
| Date of Issue | 2011-11-10 (EMD) |
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