Influence of extrusion 4D printing parameters on the thermal shape-morphing behaviors of polylactic acid (PLA)

Ansaripour, A., Heidari-Rarani, M., Mahshid, R. and Bodaghi, M. ORCID: 0000-0002-0707-944X, 2024. Influence of extrusion 4D printing parameters on the thermal shape-morphing behaviors of polylactic acid (PLA). International Journal of Advanced Manufacturing Technology. ISSN 0268-3768

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Abstract

A simple and inactive structure is able to transform into a complex and active one via four-dimensional (4D) printing. Controlling bending deformation, activation time, and temperature is crucial in 4D printing. This study aimed to comprehensively evaluate and analyze the effect of different process parameters on the bending deformation of polylactic acid (PLA) shape-morphing produced by material extrusion additive manufacturing. These parameters included layup, layer thickness, printing speed, nozzle temperature, nozzle diameter, and bed temperature. Since the bending deformation is significantly affected by the specimen wall, this study has focused, for the first time, on the simultaneous influence of process parameters and presence of a wall on the deformation. Furthermore, the study examined the influence of printing parameters on activation time and activation temperature. The results indicated that increasing the pre-strain stored in the parts led to a decrease in activation time and activation temperature. Subsequently, the the Taguchi design of experiment method was used to optimize the most influential parameters on the bending deformation. The difference between the optimal predicted and the experimental deformations was less than 2%. Layer thickness, layup, nozzle temperature, and printing speed were recognized respectively as the most effective parameters for controlling deformation.

Item Type:	Journal article
Publication Title:	International Journal of Advanced Manufacturing Technology
Creators:	Ansaripour, A., Heidari-Rarani, M., Mahshid, R. and Bodaghi, M.
Publisher:	Springer Science and Business Media LLC
Date:	25 March 2024
ISSN:	0268-3768
Identifiers:	Number Type 10.1007/s00170-024-13470-6 DOI 1881297 Other
Rights:	This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s00170-024-13470-6
Divisions:	Schools > School of Science and Technology
Record created by:	Laura Ward
Date Added:	05 Apr 2024 09:44
Last Modified:	05 Apr 2024 09:44
URI:	https://irep.ntu.ac.uk/id/eprint/51201

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