Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

Shape Memory Properties of Additive Manufactured Continuous Metallic Wire-Reinforced PLA with Electrothermal Activation

Version 2 : Received: 31 October 2023 / Approved: 1 November 2023 / Online: 1 November 2023 (04:35:15 CET)

How to cite: Ghaemi Sarcheshmeh, M.; Behravesh, A.H.; Hedayati, S.K.; Bakhtiyari, A.; Akbari, D.; Rizvi, G. Shape Memory Properties of Additive Manufactured Continuous Metallic Wire-Reinforced PLA with Electrothermal Activation. Preprints 2023, 2023101142. https://doi.org/10.20944/preprints202310.1142.v2 Ghaemi Sarcheshmeh, M.; Behravesh, A.H.; Hedayati, S.K.; Bakhtiyari, A.; Akbari, D.; Rizvi, G. Shape Memory Properties of Additive Manufactured Continuous Metallic Wire-Reinforced PLA with Electrothermal Activation. Preprints 2023, 2023101142. https://doi.org/10.20944/preprints202310.1142.v2

Abstract

In this study, additive manufacturing of reinforced parts using metallic wire as both a reinforcement component and a shape memory stimulus through Fused Deposition Modeling (FDM) was investigated. A Shape Memory Polymer (SMP) restores its original shape and recovers it upon specific stimuli. This research employed chromium-nickel metal wire as a reinforcing component to enhance mechanical properties and introduce the capability for thermal stimulation of polylactic acid (PLA) via electrical current using the "in-situ impregnation" method within FDM process. Reinforced specimens were fabricated with wire with two diameters of 0.1 and 0.15 mm, along with two volume percentages of 5 and 10. Comprehensive evaluations encompassing mechanical (tensile and flexural) and thermal properties of the printed specimens were conducted. The outcomes revealed a significant enhancement in both tensile and flexural properties of the polymer matrix due to the embedding metallic wire, even under elevated temperatures during bending test. Furthermore, the thermal properties of the reinforced specimens were examined by subjecting them to various voltages, resulting in temperature ranging from 36.4 to 150.1°C. These findings highlight the ability to tailor a wide range of mechanical properties and shape recovery in the reinforced specimens by carefully selecting the wire volume fraction, voltage, and wire diameter, thus regulating the materials properties with specific application requirements.

Keywords

Additive Manufacturing; Polylactic Acid; Shape Memory Polymer; Continuous Fibers; Thermoplastic Composites

Subject

Engineering, Mechanical Engineering

Comments (1)

Comment 1
Received: 1 November 2023
Commenter: Amir Hossein Behravesh
Commenter's Conflict of Interests: Author
Comment: Corresponding author name was mentioned incorrectly and replaced
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