Experimental analysis of FDM structures in shape memory polylactic acid
Maria Pia Desole, Annamaria Gisario, Franco Maria Di Russo, Massimiliano Barletta
download PDFAbstract. The behavior of solid cellular structures in polylactic acid (PLA) manufactured by Fused Deposition Modeling (FDM) is herein investigated. In particular, the manuscript investigates the capability of permanently deformed PLA structures to restore their starting shapes, once a thermal stimulus is applied on them. In this study, a structure called Rototetrachiral was produced, which originates from Rotochiral and Tetrachiral. The latter was tested to verify its mechanical response and its ability to absorb energy when subjected to a compression stress, repeated over several cycles. The experimental results showed a close connection between the structure’s ability to absorb energy and its extent of damage, which gradually increases with the number of cycles. Microscopic analysis shows that the central cells are the most deformed. However, the applied thermal stimulus allows to recover the deformation, ensuring good performance of the structure for a certain number of cycles.
Keywords
Additive Manufacturing, Energy Absorption, Shape Recovery
Published online 9/5/2023, 7 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Maria Pia Desole, Annamaria Gisario, Franco Maria Di Russo, Massimiliano Barletta, Experimental analysis of FDM structures in shape memory polylactic acid, Materials Research Proceedings, Vol. 35, pp 191-197, 2023
DOI: https://doi.org/10.21741/9781644902714-23
The article was published as article 23 of the book Italian Manufacturing Association Conference
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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