Insights into Mechanical and Thermal Properties of Additively Manufactured PLA Samples Triggered by Automotive Industry Demands

Motoc, Dana Luca; Draghicescu, Horatiu Teodorescu; Florea, Daniela; Preda, Ion; Ispas, Nicolae

Dana Luca Motoc, Horatiu Teodorescu Draghicescu, Daniela Florea, Ion Preda, Nicolae Ispas

Insights into Mechanical and Thermal Properties of Additively Manufactured PLA Samples Triggered by Automotive Industry Demands

Abstract:
Paper explores the influence of the infill density (%), as a process parameter in additive manufacturing (3D printing), upon the mechanical (tensile, impact) and thermo-physical properties of PLA samples. The results indicated degradation of both tensile strengths and moduli with decrease of samples’ relative density from 100% to 25% with 49.9% and 42.0%, respectively. Similar behaviour holds on impact strength values that degrades with 56.0% for the samples printed using a 25% infill density. The Young’s modulus variation with relative density values was approximated using a 3rd order polynomial function, in accordance with the expression for closed-cell thick edge rhombus cellular structures. All PLA samples revealed small difference on their coefficients of linear thermal expansion, irrespective of their infill densities, with a decrease of 6.34% in the lowest relative density value specimens, indicating enhanced stability within selected temperature range. Glass transition temperatures were approximately located at 65°C whereas cold-crystallization around 80°C, thus unaffected by selected process parameter.

Keywords:
polylactic acid (PLA); additive manufacturing; mechanical properties; thermal stability

Issue: 2020 Volume 57, Issue 4

Pages: 193-201

Publication date: 2021/1/6

https://doi.org/10.37358/MP.20.4.5418

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This article is published under the Creative Commons Attribution 4.0 International License

Citation Styles

Cite this article as:
MOTOC, D.L., DRAGHICESCU, H.T., FLOREA, D., PREDA, I., ISPAS, N., Insights into Mechanical and Thermal Properties of Additively Manufactured PLA Samples Triggered by Automotive Industry Demands, Mater. Plast., 57(4), 2020, 193-201. https://doi.org/10.37358/MP.20.4.5418

Vancouver
Motoc DL, Draghicescu HT, Florea D, Preda I, Ispas N. Insights into Mechanical and Thermal Properties of Additively Manufactured PLA Samples Triggered by Automotive Industry Demands. Mater. Plast.[internet]. 2020 Dec;57(4):193-201. Available from: https://doi.org/10.37358/MP.20.4.5418

APA 6th edition
Motoc, D.L., Draghicescu, H.T., Florea, D., Preda, I. & Ispas, N. (2020). Insights into Mechanical and Thermal Properties of Additively Manufactured PLA Samples Triggered by Automotive Industry Demands. Materiale Plastice, 57(4), 193-201. https://doi.org/10.37358/MP.20.4.5418

Harvard
Motoc, D.L., Draghicescu, H.T., Florea, D., Preda, I., Ispas, N. (2020). 'Insights into Mechanical and Thermal Properties of Additively Manufactured PLA Samples Triggered by Automotive Industry Demands', Materiale Plastice, 57(4), pp. 193-201. https://doi.org/10.37358/MP.20.4.5418

IEEE
D.L. Motoc, H.T. Draghicescu, D. Florea, I. Preda, N. Ispas, "Insights into Mechanical and Thermal Properties of Additively Manufactured PLA Samples Triggered by Automotive Industry Demands". Materiale Plastice, vol. 57, no. 4, pp. 193-201, 2020. [online]. https://doi.org/10.37358/MP.20.4.5418

Text
Dana Luca Motoc, Horatiu Teodorescu Draghicescu, Daniela Florea, Ion Preda, Nicolae Ispas,
Insights into Mechanical and Thermal Properties of Additively Manufactured PLA Samples Triggered by Automotive Industry Demands,
Materiale Plastice,
Volume 57, Issue 4,
2020,
Pages 193-201,
ISSN 2668-8220,
https://doi.org/10.37358/MP.20.4.5418.
(https://revmaterialeplastice.ro/Articles.asp?ID=5418)
Keywords: polylactic acid (PLA); additive manufacturing; mechanical properties; thermal stability

RIS
TY - JOUR
T1 - Insights into Mechanical and Thermal Properties of Additively Manufactured PLA Samples Triggered by Automotive Industry Demands
A1 - Motoc, Dana Luca
A2 - Draghicescu, Horatiu Teodorescu
A3 - Florea, Daniela
A4 - Preda, Ion
A5 - Ispas, Nicolae
JF - Materiale Plastice
JO - Mater. Plast.
PB - Materiale Plastice SRL
SN - 2668-8220
Y1 - 2020
VL - 57
IS - 4
SP - 193
EP - 201
UR - https://doi.org/10.37358/MP.20.4.5418
KW - polylactic acid (PLA)
KW - additive manufacturing
KW - mechanical properties
KW - thermal stability
ER -

BibTex
@article{MatPlast2020P193,
author = {Motoc Dana Luca and Draghicescu Horatiu Teodorescu and Florea Daniela and Preda Ion and Ispas Nicolae},
title = {Insights into Mechanical and Thermal Properties of Additively Manufactured PLA Samples Triggered by Automotive Industry Demands},
journal = {Materiale Plastice},
volume = {57},
number = {4},
pages = {193-201},
year = {2020},
issn = {2668-8220},
doi = {https://doi.org/10.37358/MP.20.4.5418},
url = {https://revmaterialeplastice.ro/Articles.asp?ID=5418}
}

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