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Effect of weld geometry on fatigue performance of 6061-T6 aluminum GMAW: part 2. Lap joint

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Abstract

To investigate the effect of weld geometry on the fatigue performance of aluminum lap joint arc welding, GMAW experiments and fatigue tests were conducted. The results show that the combination of a smaller toe angle and full penetration with a proper gap size results in the best fatigue performance. A proper gap size can disperse the stress concentration, and the dispersion increases fatigue performance. Because of the reduction in the welded area, partial penetration has a lower fatigue performance than the full-penetration case. In the lap joint, a large toe angle causes a smaller weld reinforcement owing to geometric reasons, and therefore exhibits a lower fatigue performance.

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Acknowledgments

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No.2021R1A4A1033141) and (No.2021R1F1A106-4238).

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Authors and Affiliations

  1. School of Mechanical Engineering, Chungbuk National University, Cheongju, 28644, Korea

    Sang-Woo Han, Geonho Lee, Hansol Kim & Jungho Cho

  2. Light Metal Materials Development Team, Hyundai Motor Group, Hwaseong, 18280, Korea

    Min-Soo Kim & Young-Rae Jo

Authors
  1. Sang-Woo Han
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  2. Geonho Lee
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  3. Hansol Kim
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  4. Min-Soo Kim
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  5. Young-Rae Jo
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  6. Jungho Cho
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Corresponding author

Correspondence to Jungho Cho.

Additional information

Jungho Cho received his Ph.D. at KAIST in 2007 and now he is a Faculty of Chungbuk National University after working at Hyundai Motors and Ohio State University, USA for several years. His major is development of welding and joining techniques, welding physics and thermo-dynamical analysis of weld pool.

Sang-Woo Han is a Visiting Scholar of Research Institute of Industrial Science & Technology, Chungbuk National University, Cheongju, Korea. He received his Ph.D. in Mechanical Engineering from KAIST. His research interests include arc welding, laser processing, and numerical simulation.

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Han, SW., Lee, G., Kim, H. et al. Effect of weld geometry on fatigue performance of 6061-T6 aluminum GMAW: part 2. Lap joint. J Mech Sci Technol 36, 5209–5214 (2022). https://doi.org/10.1007/s12206-022-0933-9

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  • DOI: https://doi.org/10.1007/s12206-022-0933-9

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