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Altering the elastic properties of 3D printed poly-lactic acid (PLA) parts by compressive cyclic loading
ID
Pepelnjak, Tomaž
(
Author
),
ID
Karimi, Ako
(
Author
),
ID
Maček, Andraž
(
Author
),
ID
Mole, Nikolaj
(
Author
)
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MD5: CFE797260CD383B19B910690AE562512
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https://www.mdpi.com/1996-1944/13/19/4456
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Abstract
In designing high-performance, lightweight components, cellular structures are one of the approaches to be considered. The present study aimed to analyze the effect of the infill line distance of 3D printed circular samples on their compressive elastic behavior. Lightweight cellular poly-lactic acid (PLA) samples with a triangular infill pattern were exposed to cyclic compressive loading and their stiffness was investigated. PLA is one of the most commonly used thermoplastic materials in additive manufacturing using the fused filament fabrication (FFF) process. Cylindrical samples with a diameter of 11.42 mm and a height of 10 mm were printed using FFF technology with two different infill line distances (1.6 mm and 2.4 mm). Comparing the nominal compressive stress-nominal strain curves under cyclic loading showed that the first cycle response was significantly different with respect to the subsequent ones. Furthermore, an analysis of the dependence of the modulus of elasticity on the effects of cyclic loading was performed. It was found that through elastic deformation, and combined elastic and plastic deformation, the samples’ properties such as stiffness could be altered.
Language:
English
Keywords:
3D printing
,
compression test
,
cyclic loading
,
FFF
,
PLA
,
infill line distance
,
loading–unloading
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Publication status:
Published
Publication version:
Version of Record
Year:
2020
Number of pages:
18 str.
Numbering:
Vol. 13, iss. 19, art. 4456
PID:
20.500.12556/RUL-121580
UDC:
004.92:620.173(045)
ISSN on article:
1996-1944
DOI:
10.3390/ma13194456
COBISS.SI-ID:
32536579
Publication date in RUL:
16.10.2020
Views:
970
Downloads:
190
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Record is a part of a journal
Title:
Materials
Shortened title:
Materials
Publisher:
Molecular Diversity Preservation International
ISSN:
1996-1944
COBISS.SI-ID:
33588485
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:
08.10.2020
Secondary language
Language:
Slovenian
Keywords:
3D tiskanje
,
FFF
,
PLA
,
tlačni preizkus
,
ciklično obremenjevanje
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0248
Name:
Inovativni izdelovalni sistemi in procesi
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0263
Name:
Mehanika v tehniki
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