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Advances in Materials Science and Engineering
Volume 2013 (2013), Article ID 630984, 6 pages
Review Article

Review on Techniques for On-Line Monitoring of Resistance Spot Welding Process

College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China

Received 2 August 2013; Accepted 26 November 2013

Academic Editor: Daolun Chen

Copyright © 2013 Yanhua Ma et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Resistance spot welding has been widely used for joining sheet metals, especially in automotive and aerospace industries. However, since the formation of weld nugget is invisible in resistance spot welding, traditionally off-line destructive test is applied for inspection of the weld quality, which is costly and inefficient. Therefore, in recent years, a lot of efforts have been made in estimating or detecting the weld quality nondestructively by on-line welding parameter monitoring. This paper presents a review on techniques of monitoring resistance spot welding process or weld quality, and the advantages as well as limitations of these techniques are discussed.