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Joining performance evaluation of different types of GEP224 glass/epoxy-to-AZ31B magnesium alloy singlelap joints

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Abstract

The joining performance was evaluated for different types of GEP224 glass/epoxy-to-AZ31B magnesium alloy single-lap joints. To achieve this goal, three types of single-lap joints with adhesive bonded, mechanically fastened and hybrid (bond/bolt) joints were fabricated. The strength and failure mechanism of the joints was investigated and compared with each other. Additionally, the width and joining torque effect was evaluated. From the test results, the load-displacement curves of the bonded and the bolted single-lap joints showed a nearly linear and logarithmic curve shape until final failure, respectively. In the hybrid joints, they initially behaved like bonded joints, while they followed a logarithmic curve shape, like the bolted joints, after a sudden load drop. The failure strength of the bonded joint showed the biggest increase as the width was getting wider. In the bolted joint, the failure load showed a decreased trend as the torque increased due to the early net tension failure of the GFRP adherends. In contrast, the failure load of the hybrid joint increased as the torque increased.

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Authors and Affiliations

  1. New Transportation Systems Research Center, Korea Railroad Research Institute, 176, Cheoldobangmulgwan-ro, Uiwang-si, Gyeonggi-do, 437-757, South Korea

    Jung-Seok Kim & Jae-Young Lim

  2. Railway System Engineering, University of Science & Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon, 305-350, South Korea

    Woo-Geun Lee

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  1. Jung-Seok Kim
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  2. Jae-Young Lim
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  3. Woo-Geun Lee
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Correspondence to Jung-Seok Kim.

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Kim, JS., Lim, JY. & Lee, WG. Joining performance evaluation of different types of GEP224 glass/epoxy-to-AZ31B magnesium alloy singlelap joints. Int. J. Precis. Eng. Manuf. 16, 1135–1140 (2015). https://doi.org/10.1007/s12541-015-0147-5

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  • DOI: https://doi.org/10.1007/s12541-015-0147-5

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