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Paper Abstract and Keywords
Presentation 2026-07-17 13:05
Magnetic Pulse Welding of Al/Cu Sheets Using Thin Flat 5-Turn Coil
Tomokatsu Aizawa (Metropolitan College of Technology), Kazuo Matsuzawa, Rio Senda (Metropolitan College of Industrial Technology) EMCJ2026-25 WPT2026-14 EMD2026-1
Abstract (in Japanese) (See Japanese page) 
(in English) Magnetic pulse welding method can create a high-quality electrical connection between Al and Cu sheets at low temperatures. The experiments are carried out passing a large discharge current from a capacitor bank to a thin flat 5-turn coil. Using the thin coil, the capacitor bank energy and discharge current required for welding can be reduced. The coil is elastic and consists of five coil plates with high strength and medium conductivity. The coil thickness is 2mm including insulating sheets. The Al/Cu sheets are overlapped with a gap (1mm) between them and fixed onto the insulated coil. The Al sheet near the coil is electromagnetically coupled to the coil. When the discharge current flows through the coil, a high-density magnetic flux is suddenly applied to the Al sheet. As a result, eddy currents flow in the Al sheet, and electromagnetic forces are generated. The Al sheet is accelerated and collided with the Cu sheet at high speed, and the two sheets are impact welded together. The capacity of the capacitor bank is 24μF, the oscillation period of the discharge current is 30μs. For example, the bank energy required for welding of Al/Cu sheets (each thickness 0.5mm) is 0.38kJ, the discharge voltage is 5.6kV, and the maximum discharge current is approximately 19kA.
Keyword (in Japanese) (See Japanese page) 
(in English) Magnetic pulse welding / Overlapped Al/Cu sheets / Thin flat 5-turn coil / Capacitor bank / Discharge current / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 117, EMD2026-1, pp. 1-6, July 2026.
Paper # EMD2026-1 
Date of Issue 2026-07-10 (EMCJ, WPT, EMD) 
ISSN 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 EMCJ2026-25 WPT2026-14 EMD2026-1

Conference Information
Committee WPT EMCJ EMD  
Conference Date 2026-07-17 - 2026-07-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Power Transfer, EMC, Electronic Device Implementation 
Paper Information
Registration To EMD 
Conference Code 2026-07-WPT-EMCJ-EMD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Magnetic Pulse Welding of Al/Cu Sheets Using Thin Flat 5-Turn Coil 
Sub Title (in English)  
Keyword(1) Magnetic pulse welding  
Keyword(2) Overlapped Al/Cu sheets  
Keyword(3) Thin flat 5-turn coil  
Keyword(4) Capacitor bank  
Keyword(5) Discharge current  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Tomokatsu Aizawa  
1st Author's Affiliation Tokyo Metropolitan College of Technology (Metropolitan College of Technology)
2nd Author's Name Kazuo Matsuzawa  
2nd Author's Affiliation Tokyo Metropolitan College of Industrial Technology (Metropolitan College of Industrial Technology)
3rd Author's Name Rio Senda  
3rd Author's Affiliation Tokyo Metropolitan College of Industrial Technology (Metropolitan College of Industrial Technology)
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Speaker Author-1 
Date Time 2026-07-17 13:05:00 
Presentation Time 25 minutes 
Registration for EMD 
Paper # EMCJ2026-25, WPT2026-14, EMD2026-1 
Volume (vol) vol.126 
Number (no) no.115(EMCJ), no.116(WPT), no.117(EMD) 
Page pp.1-6 
#Pages 6 
Date of Issue 2026-07-10 (EMCJ, WPT, EMD) 

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