A feasibility study of various joining techniques for three-dimensional printed polylactic acid and wood-reinforced polylactic acid biocomposite

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Palaniyappan, S., Sivakumar, N.K., Bodaghi, M. ORCID: 0000-0002-0707-944X, Kumar, M. and Rahaman, M., 2023. A feasibility study of various joining techniques for three-dimensional printed polylactic acid and wood-reinforced polylactic acid biocomposite. Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications. ISSN 1464-4207

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Official URL: https://doi.org/10.1177/14644207231189956

Abstract

Current research assesses various joining techniques such as an adhesive bond, direct three-dimensional (3D) printing, and an ultrasonic welding of 3D printed dissimilar thermoplastic materials such as PLA and wood reinforced PLA composites. The importance of the present study is to determine the effective technique for joining the 3D printed complex structural profiles. Mechanical responses such as lap shear strength and shore D hardness of the various joints were studied and compared experimentally. The results highlighted that 15-17 % of higher shear strength was obtained for the ultrasonically welded joints compared with the direct 3D printed PLA and wood PLA lap joints. Macroscopic investigation of the ultrasonic welded polymeric joint exhibits the melting of polymers and wet the interface—the results in inter-molecular diffusion of polymeric chains and entanglement of polymers under the respective conditions.

Item Type:

Journal article

Publication Title:

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications

Creators:

Palaniyappan, S., Sivakumar, N.K., Bodaghi, M., Kumar, M. and Rahaman, M.

Publisher:

SAGE Publications

Date:

18 July 2023

ISSN:

1464-4207