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Direct joining of 3D-printed thermoplastic parts to SLM-fabricated metal cellular structures by ultrasonic welding

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Abstract

The joining capability of metal cellular structures fabricated using the additive manufacturing (selective laser melting (SLM)) method is investigated herein. The metal cellular structures are composed of sub-millimeter holes and internal pores. The direct joining of 3D-printed ABS-M30i thermoplastic parts to metal cellular structures by ultrasonic welding is demonstrated. The SLM-fabricated structures comprised of partially melted powders provide micro-scale roughness, which enhances the micro-mechanical interlocking between joining parts. A shear strength 17.7 MPa and normal tensile strength of 15.2 MPa were obtained, up to 55 and 48% of ABS-M30i ultimate tensile strength, respectively. Moreover, normal tensile plastic strength up to 86% of the shear strength was obtained.

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Acknowledgements

The authors gratefully acknowledge the support of the Ministry of Science and Technology for this research under grants MOST 105-2218-E-006-004 and MOST 105-2221-E-009-063.

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Authors and Affiliations

  1. Department of Mechanical Engineering, National Chiao Tung University, No. 1001, Ta Hsueh Road, Hsinchu, 300, Taiwan

    Sheng-Hung Tang, Chung-Wei Cheng, Ren-Yu Yeh & Ray-Quan Hsu

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  1. Sheng-Hung Tang
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  2. Chung-Wei Cheng
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  3. Ren-Yu Yeh
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  4. Ray-Quan Hsu
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Correspondence to Chung-Wei Cheng.

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Tang, SH., Cheng, CW., Yeh, RY. et al. Direct joining of 3D-printed thermoplastic parts to SLM-fabricated metal cellular structures by ultrasonic welding. Int J Adv Manuf Technol 99, 729–736 (2018). https://doi.org/10.1007/s00170-018-2409-8

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  • DOI: https://doi.org/10.1007/s00170-018-2409-8

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