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Enhancing interlayer bonding strength of FDM 3D printing technology by diode laser-assisted system

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Abstract

Fused deposition modeling (FDM) is the most widespread 3D printing technology. The primary reasons for this are its simplicity in manufacturing and low cost. The common issue of FDM is an anisotropic property of the extruded layer. Therefore, the mechanical strength of traditional machining methods is significantly better than FDM-fabricated parts. Implementation of diode laser (450 nm) with 5 W power for localized heating of the pre-deposition layer is proposed to overcome this problem. The laser power is controlled during the printing process. Thereby, layer interface temperature reached for critical point, where the bonding diffusion process between layers increased for the maximum level. The effect of the pre-deposing heating method is presented at different laser power values and printing speed. Tensile test results on PLA (polylactic acid) plastic specimen indicate a 10.16% increase in ultimate tensile strength at 2.84 W power of the laser. However, crack and hole formations indicate a negative result of intensive laser heating employment.

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Acknowledgements

Authors sincerely express their gratitude to Nazarbayev University for this research grant. The award number is 090118FD5327. Due to the financial support, the research activities are carried out successfully.

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  1. Department of Mechanical & Aerospace Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, Kazakhstan

    Nurbol Sabyrov, Anuar Abilgaziyev & Md. Hazrat Ali

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  1. Nurbol Sabyrov
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  2. Anuar Abilgaziyev
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  3. Md. Hazrat Ali
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Correspondence to Md. Hazrat Ali.

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Sabyrov, N., Abilgaziyev, A. & Ali, M.H. Enhancing interlayer bonding strength of FDM 3D printing technology by diode laser-assisted system. Int J Adv Manuf Technol 108, 603–611 (2020). https://doi.org/10.1007/s00170-020-05455-y

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  • DOI: https://doi.org/10.1007/s00170-020-05455-y

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