Cargando…

Mechanical Properties of FDM Printed PLA Parts before and after Thermal Treatment

Fused deposition modeling (FDM) is one of the most often-used technologies in additive manufacturing. Several materials are used with this technology, such as poly(lactic acid) (PLA), which is most commonly applied. The mechanical properties of 3D-printed parts depend on the process parameters. This...

Descripción completa

Detalles Bibliográficos
Autores principales: Chalgham, Ali, Ehrmann, Andrea, Wickenkamp, Inge
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8069669/
https://www.ncbi.nlm.nih.gov/pubmed/33920433
http://dx.doi.org/10.3390/polym13081239
_version_ 1783683291299184640
author Chalgham, Ali
Ehrmann, Andrea
Wickenkamp, Inge
author_facet Chalgham, Ali
Ehrmann, Andrea
Wickenkamp, Inge
author_sort Chalgham, Ali
collection PubMed
description Fused deposition modeling (FDM) is one of the most often-used technologies in additive manufacturing. Several materials are used with this technology, such as poly(lactic acid) (PLA), which is most commonly applied. The mechanical properties of 3D-printed parts depend on the process parameters. This is why, in this study, three-point bending tests were carried out to characterize the influence of build orientation, layer thickness, printing temperature and printing speed on the mechanical properties of PLA samples. Not only the process parameters may affect the mechanical properties, but heat after-treatment also has an influence on them. For this reason, additional samples were printed with optimal process parameters and characterized after pure heat treatment as well as after deformation at a temperature above the glass transition temperature, cooling with applied deformation, and subsequent recovery under heat treatment. These findings are planned to be used in a future study on finger orthoses that could either be printed according to shape or in a flat shape and afterwards heated and bent around the finger.
format Online
Article
Text
id pubmed-8069669
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-80696692021-04-26 Mechanical Properties of FDM Printed PLA Parts before and after Thermal Treatment Chalgham, Ali Ehrmann, Andrea Wickenkamp, Inge Polymers (Basel) Article Fused deposition modeling (FDM) is one of the most often-used technologies in additive manufacturing. Several materials are used with this technology, such as poly(lactic acid) (PLA), which is most commonly applied. The mechanical properties of 3D-printed parts depend on the process parameters. This is why, in this study, three-point bending tests were carried out to characterize the influence of build orientation, layer thickness, printing temperature and printing speed on the mechanical properties of PLA samples. Not only the process parameters may affect the mechanical properties, but heat after-treatment also has an influence on them. For this reason, additional samples were printed with optimal process parameters and characterized after pure heat treatment as well as after deformation at a temperature above the glass transition temperature, cooling with applied deformation, and subsequent recovery under heat treatment. These findings are planned to be used in a future study on finger orthoses that could either be printed according to shape or in a flat shape and afterwards heated and bent around the finger. MDPI 2021-04-11 /pmc/articles/PMC8069669/ /pubmed/33920433 http://dx.doi.org/10.3390/polym13081239 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Chalgham, Ali
Ehrmann, Andrea
Wickenkamp, Inge
Mechanical Properties of FDM Printed PLA Parts before and after Thermal Treatment
title Mechanical Properties of FDM Printed PLA Parts before and after Thermal Treatment
title_full Mechanical Properties of FDM Printed PLA Parts before and after Thermal Treatment
title_fullStr Mechanical Properties of FDM Printed PLA Parts before and after Thermal Treatment
title_full_unstemmed Mechanical Properties of FDM Printed PLA Parts before and after Thermal Treatment
title_short Mechanical Properties of FDM Printed PLA Parts before and after Thermal Treatment
title_sort mechanical properties of fdm printed pla parts before and after thermal treatment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8069669/
https://www.ncbi.nlm.nih.gov/pubmed/33920433
http://dx.doi.org/10.3390/polym13081239
work_keys_str_mv AT chalghamali mechanicalpropertiesoffdmprintedplapartsbeforeandafterthermaltreatment
AT ehrmannandrea mechanicalpropertiesoffdmprintedplapartsbeforeandafterthermaltreatment
AT wickenkampinge mechanicalpropertiesoffdmprintedplapartsbeforeandafterthermaltreatment