---
_id: '682'
abstract:
- lang: eng
text: Polylactic acid (PLA) belongs to the few thermoplastic polymers that are derived
from renewable resources such as corn starch or sugar cane. PLA is often used
in 3D printing by fused deposition modelling (FDM) since it is relatively easy
to print, does not show warping and can be printed without a closed building chamber.
On the other hand, PLA has interesting mechanical properties which are influenced
by the printing parameters and geometries. Here we present shape-memory properties
of PLA cubes with different infill patterns and percentages. We investigate the
material response under defined quasi-static load as well as the possibility to
restore the original 3D printed shape. The quasi-static flexural properties are
linked to the porosity and the infill structure of the samples under investigation,
examined optically and by simulations. Our results underline the importance of
designing the infill patterns carefully to develop samples with desired mechanical
properties.
author:
- first_name: Guido
full_name: Ehrmann, Guido
last_name: Ehrmann
- first_name: Andrea
full_name: Ehrmann, Andrea
id: '223776'
last_name: Ehrmann
orcid: 0000-0003-0695-3905
orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/105572577
citation:
alphadin: 'Ehrmann, Guido ; Ehrmann, Andrea: Shape-memory properties
of 3D printed PLA structures. In: The First International Conference on “Green”
Polymer Materials : MDPI, 2020'
ama: 'Ehrmann G, Ehrmann A. Shape-memory properties of 3D printed PLA structures.
In: The First International Conference on “Green” Polymer Materials. MDPI;
2020.'
apa: Ehrmann, G., & Ehrmann, A. (2020). Shape-memory properties of 3D printed
PLA structures. In The First International Conference on “Green” Polymer Materials.
MDPI.
bibtex: '@inproceedings{Ehrmann_Ehrmann_2020, title={ Shape-memory properties of
3D printed PLA structures}, booktitle={The First International Conference on “Green”
Polymer Materials}, publisher={MDPI}, author={Ehrmann, Guido and Ehrmann, Andrea},
year={2020} }'
chicago: Ehrmann, Guido, and Andrea Ehrmann. “ Shape-Memory Properties of 3D Printed
PLA Structures.” In The First International Conference on “Green” Polymer Materials.
MDPI, 2020.
ieee: G. Ehrmann and A. Ehrmann, “ Shape-memory properties of 3D printed PLA structures,”
in The First International Conference on “Green” Polymer Materials, 2020.
mla: Ehrmann, Guido, and Andrea Ehrmann. “ Shape-Memory Properties of 3D Printed
PLA Structures.” The First International Conference on “Green” Polymer Materials,
MDPI, 2020.
short: 'G. Ehrmann, A. Ehrmann, in: The First International Conference on “Green”
Polymer Materials, MDPI, 2020.'
conference:
end_date: 25 November 2020
name: The First International Conference on “Green” Polymer Materials
start_date: 5 November 2020
date_created: 2021-01-03T17:54:51Z
date_updated: 2022-01-01T15:23:44Z
department:
- _id: '103'
file:
- access_level: open_access
content_type: application/pdf
creator: aehrmann
date_created: 2021-01-03T17:53:23Z
date_updated: 2021-01-03T17:53:23Z
file_id: '683'
file_name: 2020_EhrmannG_Sciforum.pdf
file_size: 1037888
relation: main_file
success: 1
file_date_updated: 2021-01-03T17:53:23Z
has_accepted_license: '1'
keyword:
- polylactic acid
- fused deposition modelling
- 3 point bending test
- infill parameters
- infill density
- shape-memory properties
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
publication: The First International Conference on “Green” Polymer Materials
publication_status: published
publisher: MDPI
quality_controlled: '1'
status: public
title: ' Shape-memory properties of 3D printed PLA structures'
type: conference
user_id: '223776'
year: '2020'
...
---
_id: '1626'
abstract:
- lang: eng
text: ' Polylactic acid (PLA) belongs to the few thermoplastic polymers that are
derived from renewable resources such as corn starch or sugar cane. PLA is often
used in 3D printing by fused deposition modeling (FDM) since it is relatively
easy to print, does not show warping, and can be printed without a closed building
chamber. On the other hand, PLA has interesting mechanical properties which are
influenced by the printing parameters and geometries. Here we present shape-memory
properties of PLA cubes with different infill patterns and percentages. We investigate
the material response under defined quasi-static load as well as the possibility
to restore the original 3D printed shape. The quasi-static flexural properties
are linked to the porosity and the infill structure of the samples under investigation,
examined optically and by simulations. Our results underline the importance of
designing the infill patterns carefully to develop samples with desired mechanical
properties. '
author:
- first_name: Guido
full_name: Ehrmann, Guido
last_name: Ehrmann
- first_name: Andrea
full_name: Ehrmann, Andrea
id: '223776'
last_name: Ehrmann
orcid: 0000-0003-0695-3905
orcid_put_code_url: https://api.orcid.org/v2.0/0000-0003-0695-3905/work/105571396
citation:
alphadin: 'Ehrmann, Guido ; Ehrmann, Andrea: Shape-Memory Properties
of 3D Printed PLA Structures. In: Proceedings of The First International Conference
on “Green” Polymer Materials 2020. Basel, Switzerland : MDPI, 2020, S. 7198'
ama: 'Ehrmann G, Ehrmann A. Shape-Memory Properties of 3D Printed PLA Structures.
In: Proceedings of The First International Conference on “Green” Polymer Materials
2020. Basel, Switzerland: MDPI; 2020:7198. doi:10.3390/CGPM2020-07198'
apa: 'Ehrmann, G., & Ehrmann, A. (2020). Shape-Memory Properties of 3D Printed
PLA Structures. In Proceedings of The First International Conference on “Green”
Polymer Materials 2020 (p. 7198). Basel, Switzerland: MDPI. https://doi.org/10.3390/CGPM2020-07198'
bibtex: '@inproceedings{Ehrmann_Ehrmann_2020, place={Basel, Switzerland}, title={Shape-Memory
Properties of 3D Printed PLA Structures}, DOI={10.3390/CGPM2020-07198},
booktitle={Proceedings of The First International Conference on “Green” Polymer
Materials 2020}, publisher={MDPI}, author={Ehrmann, Guido and Ehrmann, Andrea},
year={2020}, pages={7198} }'
chicago: 'Ehrmann, Guido, and Andrea Ehrmann. “Shape-Memory Properties of 3D Printed
PLA Structures.” In Proceedings of The First International Conference on “Green”
Polymer Materials 2020, 7198. Basel, Switzerland: MDPI, 2020. https://doi.org/10.3390/CGPM2020-07198.'
ieee: G. Ehrmann and A. Ehrmann, “Shape-Memory Properties of 3D Printed PLA Structures,”
in Proceedings of The First International Conference on “Green” Polymer Materials
2020, Sciforum.net, 2020, p. 7198.
mla: Ehrmann, Guido, and Andrea Ehrmann. “Shape-Memory Properties of 3D Printed
PLA Structures.” Proceedings of The First International Conference on “Green”
Polymer Materials 2020, MDPI, 2020, p. 7198, doi:10.3390/CGPM2020-07198.
short: 'G. Ehrmann, A. Ehrmann, in: Proceedings of The First International Conference
on “Green” Polymer Materials 2020, MDPI, Basel, Switzerland, 2020, p. 7198.'
conference:
location: Sciforum.net
name: The First International Conference on “Green” Polymer Materials 2020
date_created: 2022-01-01T14:39:25Z
date_updated: 2022-01-01T14:54:53Z
department:
- _id: '103'
doi: 10.3390/CGPM2020-07198
keyword:
- polylactic acid
- fused deposition modelling
- 3-point bending test
- infill parameters
- infill density
- shape-memory properties
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.3390/CGPM2020-07198
oa: '1'
page: '7198'
place: Basel, Switzerland
publication: Proceedings of The First International Conference on “Green” Polymer
Materials 2020
publication_status: published
publisher: MDPI
quality_controlled: '1'
status: public
title: Shape-Memory Properties of 3D Printed PLA Structures
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: conference
user_id: '223776'
year: '2020'
...
---
_id: '625'
abstract:
- lang: eng
text: Additive manufacturing technologies are nowadays used in various industries.
In most cases, however, the surface texture of the produced models is unsatisfactory
and requires further processing, aiming to reduce surface roughness and waviness.
The quality of the surface layer in many cases plays not only an aesthetic role
but also affects, for example, the process of wear and tribological properties.
In the presented work, samples prepared by fused deposition modelling technology
from polylactic acid (PLA) material were subjected to tests. The samples were
subjected to heat or chemical treatment through the use of acetone. The quality
of the surface texture was tested both before and after the treatments. In addition,
tests were carried out to determine the effect of the presented finishing treatment
on the tensile strength of the tested sample models. The test results showed that
both thermal treatment and acetone treatment influence the surface texture quality,
especially the waviness, and that the acetone treatment can improve some mechanical
properties.
article_type: original
author:
- first_name: Tomasz
full_name: Kozior, Tomasz
last_name: Kozior
- first_name: Al
full_name: Mamun, Al
last_name: Mamun
- first_name: Marah
full_name: Trabelsi, Marah
last_name: Trabelsi
- first_name: Lilia
full_name: Sabantina, Lilia
last_name: Sabantina
- first_name: Andrea
full_name: Ehrmann, Andrea
last_name: Ehrmann
date_created: 2021-01-03T13:31:12Z
date_updated: 2021-01-18T15:32:28Z
department:
- _id: '103'
doi: 10.5545/sv-jme.2019.6322
intvolume: ' 66'
issue: '2'
keyword:
- 3D printing
- finishing treatment
- fused deposition modelling
- surface texture
- mechanical properties
language:
- iso: eng
page: 105-113
publication: Strojniški vestnik – Journal of Mechanical Engineering
publication_identifier:
issn:
- 0039-2480
publication_status: published
quality_controlled: '1'
status: public
title: Quality of the Surface Texture and Mechanical Properties of FDM Printed Samples
after Thermal and Chemical Treatment
type: journal_article
user_id: '223776'
volume: 66
year: '2020'
...