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Article

Effect of Epoxy Adhesive on Nugget Formation in Resistance Welding of SAE1004/DP600/DP780 Steel Sheets

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Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures, Shanghai Jiao Tong University, Shanghai 200240, China
2
State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, China
*
Author to whom correspondence should be addressed.
Materials 2018, 11(10), 1828; https://doi.org/10.3390/ma11101828
Received: 2 September 2018 / Revised: 18 September 2018 / Accepted: 22 September 2018 / Published: 26 September 2018
This study focused on the nugget formation in resistance welding of three dissimilar steel sheets influenced by different types and thicknesses of epoxy adhesive. An improved finite element model was employed to estimate the temperature distribution in three-sheet weld-bonding and was validated by the metallographic tests. Results showed that the weld initiation time and corresponding nugget size for weld-bonds would be earlier and larger than that of resistance spot welds in term of the same welding parameters. Compared to the adhesive Betamate Flex, the weld-bonding joint of three-sheets with adhesive Terokal 5089 would have a greater increment of the weld nugget sizes due to the increase of the static contact resistance brought by the interfaces between the steel sheets. However, the bond line thickness of the previously mentioned adhesive would take little effect on the weld sizes in weld-bonding of three dissimilar steel sheets. View Full-Text
Keywords: resistance welding; epoxy adhesive; finite element model; three-sheet weld-bonding; nugget size; adhesive types; bond line thickness resistance welding; epoxy adhesive; finite element model; three-sheet weld-bonding; nugget size; adhesive types; bond line thickness
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MDPI and ACS Style

Zhao, Y.; Zhang, Y.; Lai, X. Effect of Epoxy Adhesive on Nugget Formation in Resistance Welding of SAE1004/DP600/DP780 Steel Sheets. Materials 2018, 11, 1828. https://doi.org/10.3390/ma11101828

AMA Style

Zhao Y, Zhang Y, Lai X. Effect of Epoxy Adhesive on Nugget Formation in Resistance Welding of SAE1004/DP600/DP780 Steel Sheets. Materials. 2018; 11(10):1828. https://doi.org/10.3390/ma11101828

Chicago/Turabian Style

Zhao, Yixi, Yansong Zhang, and Xinmin Lai. 2018. "Effect of Epoxy Adhesive on Nugget Formation in Resistance Welding of SAE1004/DP600/DP780 Steel Sheets" Materials 11, no. 10: 1828. https://doi.org/10.3390/ma11101828

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