---
_id: '46764'
abstract:
- lang: eng
text: "Polymer composites represent the industry standard in injection molding for
the production \r\nof plastic components with increased requirements in terms
of heat resistance and stiffness. In the \r\nfield of laser sintering (LS), these
materials are less common so far. In order to extend the available \r\nmaterial
variety for the LS process, new ceramic-filled Polyamide 613 powders are investigated\r\nwithin
the scope of this work. Here, the resulting properties from two different powder
production \r\nmethods are compared. One filled powder is produced by dry blending
and the other powder with \r\nthe same filler and filling ratio is produced by
encapsulating the filler particles inside the polymer \r\nparticles within the
dissolution-precipitation process. It was found that encapsulating the filler
\r\nparticles can provide certain benefits for the processability, for example
an improved powder \r\nflowability or better filler dispersion. However, encapsulating
the filler also alters the thermal \r\nproperties of the precipitated powder."
author:
- first_name: Ivo
full_name: Kletetzka, Ivo
id: '50769'
last_name: Kletetzka
- first_name: Fabian
full_name: Neitzel, Fabian
last_name: Neitzel
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
citation:
ama: 'Kletetzka I, Neitzel F, Schmid H-J. Assessing the Impact of the Powder Production
Method on Ceramic-filled Polyamide Composites made by Laser Sintering. In: Beaman
J, ed. Proceedings of the 34th Annual International Solid Freeform Fabrication
Symposium. Vol 34. Laboratory for Freeform Fabrication and University of Texas;
2023.'
apa: Kletetzka, I., Neitzel, F., & Schmid, H.-J. (2023). Assessing the Impact
of the Powder Production Method on Ceramic-filled Polyamide Composites made by
Laser Sintering. In J. Beaman (Ed.), Proceedings of the 34th Annual International
Solid Freeform Fabrication Symposium (Vol. 34). Laboratory for Freeform Fabrication
and University of Texas.
bibtex: '@inproceedings{Kletetzka_Neitzel_Schmid_2023, place={Austin}, title={Assessing
the Impact of the Powder Production Method on Ceramic-filled Polyamide Composites
made by Laser Sintering}, volume={34}, booktitle={Proceedings of the 34th Annual
International Solid Freeform Fabrication Symposium}, publisher={Laboratory for
Freeform Fabrication and University of Texas}, author={Kletetzka, Ivo and Neitzel,
Fabian and Schmid, Hans-Joachim}, editor={Beaman, Joseph}, year={2023} }'
chicago: 'Kletetzka, Ivo, Fabian Neitzel, and Hans-Joachim Schmid. “Assessing the
Impact of the Powder Production Method on Ceramic-Filled Polyamide Composites
Made by Laser Sintering.” In Proceedings of the 34th Annual International Solid
Freeform Fabrication Symposium, edited by Joseph Beaman, Vol. 34. Austin:
Laboratory for Freeform Fabrication and University of Texas, 2023.'
ieee: I. Kletetzka, F. Neitzel, and H.-J. Schmid, “Assessing the Impact of the Powder
Production Method on Ceramic-filled Polyamide Composites made by Laser Sintering,”
in Proceedings of the 34th Annual International Solid Freeform Fabrication
Symposium, Austin, 2023, vol. 34.
mla: Kletetzka, Ivo, et al. “Assessing the Impact of the Powder Production Method
on Ceramic-Filled Polyamide Composites Made by Laser Sintering.” Proceedings
of the 34th Annual International Solid Freeform Fabrication Symposium, edited
by Joseph Beaman, vol. 34, Laboratory for Freeform Fabrication and University
of Texas, 2023.
short: 'I. Kletetzka, F. Neitzel, H.-J. Schmid, in: J. Beaman (Ed.), Proceedings
of the 34th Annual International Solid Freeform Fabrication Symposium, Laboratory
for Freeform Fabrication and University of Texas, Austin, 2023.'
conference:
end_date: 2023-08-16
location: Austin
name: 34th Annual International Solid Freeform Fabrication Symposium
start_date: 2023-08-13
date_created: 2023-09-01T12:30:25Z
date_updated: 2023-11-02T16:49:49Z
department:
- _id: '150'
- _id: '624'
- _id: '219'
- _id: '9'
editor:
- first_name: Joseph
full_name: Beaman, Joseph
last_name: Beaman
intvolume: ' 34'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sffsymposium.org/
oa: '1'
place: Austin
publication: Proceedings of the 34th Annual International Solid Freeform Fabrication
Symposium
publication_status: published
publisher: Laboratory for Freeform Fabrication and University of Texas
quality_controlled: '1'
status: public
title: Assessing the Impact of the Powder Production Method on Ceramic-filled Polyamide
Composites made by Laser Sintering
type: conference
user_id: '50769'
volume: 34
year: '2023'
...
---
_id: '51218'
abstract:
- lang: eng
text: 'Polymer composites represent the industry standard in injection molding for
the production of plastic components with increased requirements in terms of heat
resistance and stiffness. In the field of laser sintering (LS), these materials
are less common so far. In order to extend the available material variety for
the LS process, new ceramic-filled Polyamide 613 powders are investigated within
the scope of this work. Here, the resulting properties from two different powder
production methods are compared. One filled powder is produced by dry blending
and the other powder with the same filler and filling ratio is produced by encapsulating
the filler particles inside the polymer particles within the dissolution-precipitation
process. It was found that encapsulating the filler particles can provide certain
benefits for the processability, for example an improved powder flowability or
better filler dispersion. However, encapsulating the filler also alters the thermal
properties of the precipitated powder. '
author:
- first_name: Ivo
full_name: Kletetzka, Ivo
id: '50769'
last_name: Kletetzka
- first_name: Fabian
full_name: Neitzel, Fabian
id: '72307'
last_name: Neitzel
orcid: '0009-0004-8412-3645 '
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
citation:
ama: 'Kletetzka I, Neitzel F, Schmid H-J. Assessing the Impact of the Powder Production
Method on Ceramic-filled Polyamide Composites made by Laser Sintering. In: Beaman
J, ed. Proceedings of the 34th Annual International Solid Freeform Fabrication
Symposium. ; 2023. doi:https://doi.org/10.26153/tsw/50931'
apa: Kletetzka, I., Neitzel, F., & Schmid, H.-J. (2023). Assessing the Impact
of the Powder Production Method on Ceramic-filled Polyamide Composites made by
Laser Sintering. In J. Beaman (Ed.), Proceedings of the 34th Annual International
Solid Freeform Fabrication Symposium. https://doi.org/10.26153/tsw/50931
bibtex: '@inproceedings{Kletetzka_Neitzel_Schmid_2023, place={Laboratory for Freeform
Fabrication and University of Texas, Austin}, title={Assessing the Impact of the
Powder Production Method on Ceramic-filled Polyamide Composites made by Laser
Sintering}, DOI={https://doi.org/10.26153/tsw/50931},
booktitle={Proceedings of the 34th Annual International Solid Freeform Fabrication
Symposium}, author={Kletetzka, Ivo and Neitzel, Fabian and Schmid, Hans-Joachim},
editor={Beaman, Joseph}, year={2023} }'
chicago: Kletetzka, Ivo, Fabian Neitzel, and Hans-Joachim Schmid. “Assessing the
Impact of the Powder Production Method on Ceramic-Filled Polyamide Composites
Made by Laser Sintering.” In Proceedings of the 34th Annual International Solid
Freeform Fabrication Symposium, edited by Joseph Beaman. Laboratory for Freeform
Fabrication and University of Texas, Austin, 2023. https://doi.org/10.26153/tsw/50931.
ieee: 'I. Kletetzka, F. Neitzel, and H.-J. Schmid, “Assessing the Impact of the
Powder Production Method on Ceramic-filled Polyamide Composites made by Laser
Sintering,” in Proceedings of the 34th Annual International Solid Freeform
Fabrication Symposium, Austin, 2023, doi: https://doi.org/10.26153/tsw/50931.'
mla: Kletetzka, Ivo, et al. “Assessing the Impact of the Powder Production Method
on Ceramic-Filled Polyamide Composites Made by Laser Sintering.” Proceedings
of the 34th Annual International Solid Freeform Fabrication Symposium, edited
by Joseph Beaman, 2023, doi:https://doi.org/10.26153/tsw/50931.
short: 'I. Kletetzka, F. Neitzel, H.-J. Schmid, in: J. Beaman (Ed.), Proceedings
of the 34th Annual International Solid Freeform Fabrication Symposium, Laboratory
for Freeform Fabrication and University of Texas, Austin, 2023.'
conference:
end_date: 2023-08-16
location: Austin
name: 34th Annual International Solid Freeform Fabrication Symposium
start_date: 2023-08-14
date_created: 2024-02-07T13:59:25Z
date_updated: 2024-04-02T12:46:08Z
department:
- _id: '150'
- _id: '219'
- _id: '624'
- _id: '9'
doi: https://doi.org/10.26153/tsw/50931
editor:
- first_name: Joseph
full_name: Beaman, Joseph
last_name: Beaman
keyword:
- Additive Manufacturing
- Laser Sintering
- Filled Materials
- Composites
- Polyamide 613
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sffsymposium.org/
oa: '1'
place: Laboratory for Freeform Fabrication and University of Texas, Austin
publication: Proceedings of the 34th Annual International Solid Freeform Fabrication
Symposium
publication_status: published
quality_controlled: '1'
status: public
title: Assessing the Impact of the Powder Production Method on Ceramic-filled Polyamide
Composites made by Laser Sintering
type: conference
user_id: '50769'
year: '2023'
...
---
_id: '46862'
abstract:
- lang: eng
text: The high flammability of components manufactured by laser sintering (LS) using
standard polyamide 12 (PA12) powder still severely restricts their use in industries
such as electronics, aviation, and transportation. A key factor for the further
establishment of LS is the expansion of the material portfolio with, for example,
refreshable and halogen-free flame-retardant (FR) powder materials. Accordingly,
various halogen-free FRs are investigated in this work and evaluated with respect
to their use in LS. First, their decomposition behavior and mode of action are
examined. Subsequently, the additives are dry blended with PA12 to investigate
properties relevant for LS, such as particle morphology, thermal behavior and
melt viscosity. Afterwards, test specimens for UL94 vertical flame-retardancy
tests are produced by processing the dry blends on an EOS P3 LS system. Finally,
the process stability of the process-aged powder blends is investigated by again
examining the thermal behavior and melt viscosity.
author:
- first_name: Fabian
full_name: Neitzel, Fabian
id: '72307'
last_name: Neitzel
orcid: '0009-0004-8412-3645 '
- first_name: Ivo
full_name: Kletetzka, Ivo
id: '50769'
last_name: Kletetzka
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
citation:
ama: 'Neitzel F, Kletetzka I, Schmid H-J. Halogen-Free Flame Retardant Powder Materials
for Laser Sintering: Evaluation and Process Stability Analysis. In: Beaman J,
ed. Proceedings of the 34th Annual International Solid Freeform Fabrication
Symposium. ; 2023. doi:https://doi.org/10.26153/tsw/50926'
apa: 'Neitzel, F., Kletetzka, I., & Schmid, H.-J. (2023). Halogen-Free Flame
Retardant Powder Materials for Laser Sintering: Evaluation and Process Stability
Analysis. In J. Beaman (Ed.), Proceedings of the 34th Annual International
Solid Freeform Fabrication Symposium. https://doi.org/10.26153/tsw/50926'
bibtex: '@inproceedings{Neitzel_Kletetzka_Schmid_2023, place={Laboratory for Freeform
Fabrication and University of Texas, Austin}, title={Halogen-Free Flame Retardant
Powder Materials for Laser Sintering: Evaluation and Process Stability Analysis},
DOI={https://doi.org/10.26153/tsw/50926},
booktitle={Proceedings of the 34th Annual International Solid Freeform Fabrication
Symposium}, author={Neitzel, Fabian and Kletetzka, Ivo and Schmid, Hans-Joachim},
editor={Beaman, Joseph}, year={2023} }'
chicago: 'Neitzel, Fabian, Ivo Kletetzka, and Hans-Joachim Schmid. “Halogen-Free
Flame Retardant Powder Materials for Laser Sintering: Evaluation and Process Stability
Analysis.” In Proceedings of the 34th Annual International Solid Freeform Fabrication
Symposium, edited by Joseph Beaman. Laboratory for Freeform Fabrication and
University of Texas, Austin, 2023. https://doi.org/10.26153/tsw/50926.'
ieee: 'F. Neitzel, I. Kletetzka, and H.-J. Schmid, “Halogen-Free Flame Retardant
Powder Materials for Laser Sintering: Evaluation and Process Stability Analysis,”
in Proceedings of the 34th Annual International Solid Freeform Fabrication
Symposium, Austin, 2023, doi: https://doi.org/10.26153/tsw/50926.'
mla: 'Neitzel, Fabian, et al. “Halogen-Free Flame Retardant Powder Materials for
Laser Sintering: Evaluation and Process Stability Analysis.” Proceedings of
the 34th Annual International Solid Freeform Fabrication Symposium, edited
by Joseph Beaman, 2023, doi:https://doi.org/10.26153/tsw/50926.'
short: 'F. Neitzel, I. Kletetzka, H.-J. Schmid, in: J. Beaman (Ed.), Proceedings
of the 34th Annual International Solid Freeform Fabrication Symposium, Laboratory
for Freeform Fabrication and University of Texas, Austin, 2023.'
conference:
end_date: 2023-08-16
location: Austin
name: 34th Annual International Solid Freeform Fabrication Symposium
start_date: 2023-08-14
date_created: 2023-09-07T12:11:51Z
date_updated: 2024-04-02T12:43:51Z
department:
- _id: '150'
- _id: '219'
- _id: '624'
- _id: '9'
doi: https://doi.org/10.26153/tsw/50926
editor:
- first_name: Joseph
full_name: Beaman, Joseph
last_name: Beaman
keyword:
- Additive Manufacturing
- Laser Sintering
- Flame Retardant
- Polyamide 12
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sffsymposium.org/
oa: '1'
place: Laboratory for Freeform Fabrication and University of Texas, Austin
publication: Proceedings of the 34th Annual International Solid Freeform Fabrication
Symposium
publication_status: published
quality_controlled: '1'
status: public
title: 'Halogen-Free Flame Retardant Powder Materials for Laser Sintering: Evaluation
and Process Stability Analysis'
type: conference
user_id: '72307'
year: '2023'
...
---
_id: '46815'
abstract:
- lang: eng
text: In this work, the influence of the filler–matrix adhesion on the tensile properties
of laser-sintered parts built with Polyamide 613 filled with glass beads was investigated.
For this purpose, dry blends of glass beads with and without organosilane coupling
agents and polyamide powder were prepared and processed into tensile specimens
on an EOS P396 laser sintering system. The samples were tested both in the dry
state and after an accelerated conditioning in a climate chamber. Furthermore,
finite element method (FEM) simulations were performed to model the extreme cases
of optimum adhesion and no adhesion. By correlating the tensile tests with the
simulation results and by analyzing the fracture surfaces, it was shown that the
filler–matrix adhesion is sufficient in the dry state but is strongly degraded
by conditioning. Even the presence of various organosilane thin films could not
prevent a strong deterioration of the filler–matrix adhesion and the associated
deterioration of the mechanical properties. Since a comparison with an injection-molded
sample of the same polymer filler combination shows identical behavior after conditioning,
it is assumed that this problem is not limited to additively manufactured parts.
author:
- first_name: Ivo
full_name: Kletetzka, Ivo
id: '50769'
last_name: Kletetzka
- first_name: Maren
full_name: Kosanke, Maren
last_name: Kosanke
- first_name: Dennis
full_name: Meinderink, Dennis
last_name: Meinderink
- first_name: Vanessa
full_name: Neßlinger, Vanessa
last_name: Neßlinger
- first_name: Guido
full_name: Grundmeier, Guido
id: '194'
last_name: Grundmeier
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
citation:
ama: Kletetzka I, Kosanke M, Meinderink D, Neßlinger V, Grundmeier G, Schmid H-J.
Influence of the filler–matrix adhesion and the effects of conditioning on tensile
properties of laser-sintered parts built with polyamide–glass bead dry blends.
Progress in Additive Manufacturing. Published online 2023. doi:10.1007/s40964-023-00501-z
apa: Kletetzka, I., Kosanke, M., Meinderink, D., Neßlinger, V., Grundmeier, G.,
& Schmid, H.-J. (2023). Influence of the filler–matrix adhesion and the effects
of conditioning on tensile properties of laser-sintered parts built with polyamide–glass
bead dry blends. Progress in Additive Manufacturing. https://doi.org/10.1007/s40964-023-00501-z
bibtex: '@article{Kletetzka_Kosanke_Meinderink_Neßlinger_Grundmeier_Schmid_2023,
title={Influence of the filler–matrix adhesion and the effects of conditioning
on tensile properties of laser-sintered parts built with polyamide–glass bead
dry blends}, DOI={10.1007/s40964-023-00501-z},
journal={Progress in Additive Manufacturing}, publisher={Springer Science and
Business Media LLC}, author={Kletetzka, Ivo and Kosanke, Maren and Meinderink,
Dennis and Neßlinger, Vanessa and Grundmeier, Guido and Schmid, Hans-Joachim},
year={2023} }'
chicago: Kletetzka, Ivo, Maren Kosanke, Dennis Meinderink, Vanessa Neßlinger, Guido
Grundmeier, and Hans-Joachim Schmid. “Influence of the Filler–Matrix Adhesion
and the Effects of Conditioning on Tensile Properties of Laser-Sintered Parts
Built with Polyamide–Glass Bead Dry Blends.” Progress in Additive Manufacturing,
2023. https://doi.org/10.1007/s40964-023-00501-z.
ieee: 'I. Kletetzka, M. Kosanke, D. Meinderink, V. Neßlinger, G. Grundmeier, and
H.-J. Schmid, “Influence of the filler–matrix adhesion and the effects of conditioning
on tensile properties of laser-sintered parts built with polyamide–glass bead
dry blends,” Progress in Additive Manufacturing, 2023, doi: 10.1007/s40964-023-00501-z.'
mla: Kletetzka, Ivo, et al. “Influence of the Filler–Matrix Adhesion and the Effects
of Conditioning on Tensile Properties of Laser-Sintered Parts Built with Polyamide–Glass
Bead Dry Blends.” Progress in Additive Manufacturing, Springer Science
and Business Media LLC, 2023, doi:10.1007/s40964-023-00501-z.
short: I. Kletetzka, M. Kosanke, D. Meinderink, V. Neßlinger, G. Grundmeier, H.-J.
Schmid, Progress in Additive Manufacturing (2023).
date_created: 2023-09-06T06:49:38Z
date_updated: 2023-09-07T11:51:01Z
department:
- _id: '150'
- _id: '624'
- _id: '219'
- _id: '9'
doi: 10.1007/s40964-023-00501-z
keyword:
- Industrial and Manufacturing Engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://rdcu.be/dlqzG
oa: '1'
publication: Progress in Additive Manufacturing
publication_identifier:
issn:
- 2363-9512
- 2363-9520
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: Influence of the filler–matrix adhesion and the effects of conditioning on
tensile properties of laser-sintered parts built with polyamide–glass bead dry blends
type: journal_article
user_id: '50769'
year: '2023'
...
---
_id: '45783'
author:
- first_name: Ivo
full_name: Kletetzka, Ivo
id: '50769'
last_name: Kletetzka
citation:
ama: 'Kletetzka I. Tensile Testing for Polymer AM - Best Pratice at the DMRC. In:
; 2023.'
apa: Kletetzka, I. (2023). Tensile Testing for Polymer AM - Best Pratice at the
DMRC. Mobility goes Additve, Berlin.
bibtex: '@inproceedings{Kletetzka_2023, title={Tensile Testing for Polymer AM -
Best Pratice at the DMRC}, author={Kletetzka, Ivo}, year={2023} }'
chicago: Kletetzka, Ivo. “Tensile Testing for Polymer AM - Best Pratice at the DMRC,”
2023.
ieee: I. Kletetzka, “Tensile Testing for Polymer AM - Best Pratice at the DMRC,”
presented at the Mobility goes Additve, Berlin, 2023.
mla: Kletetzka, Ivo. Tensile Testing for Polymer AM - Best Pratice at the DMRC.
2023.
short: 'I. Kletetzka, in: 2023.'
conference:
end_date: 2023-05-31
location: Berlin
name: Mobility goes Additve
start_date: 2023-05-31
date_created: 2023-06-27T08:32:16Z
date_updated: 2023-09-07T11:52:08Z
department:
- _id: '150'
- _id: '624'
- _id: '219'
- _id: '9'
language:
- iso: eng
publication_status: published
status: public
title: Tensile Testing for Polymer AM - Best Pratice at the DMRC
type: conference_abstract
user_id: '50769'
year: '2023'
...
---
_id: '43046'
abstract:
- lang: eng
text: In the laser sintering technology, the semi-crystalline polymer material is
exposed to elevated temperatures during processing, which leads to serious material
ageing for most materials. This has already been investigated intensively by various
authors. However, the ageing of the material at ambient temperatures during shelf
life has not been the focus so far. The need to analyse the shelf life can be
derived from an ecological and economic point of view. This work is focusing on
the shelf life of PA2200 (PA12). To reduce the potential influences of powder
production fluctuations, two different powder batches stored for 5.5 years and
6.5 years are investigated and compared to a reference powder produced 0.5 years
before these investigations. Multiple powder analyses and part characterisations
have been performed. A significant yellowing and molecular chain length reduction
can be derived from the measurement results. Whereas the influence on mechanical
part performance was minor, the parts built with the stored powders are more yellowish.
As it is most likely that this is due to the consumption of polyamide stabilisers,
it can be assumed that these parts will be subject to significantly faster ageing.
Therefore, it is still not recommended to use the stored powders for critical
parts or light intense and humid environments.
author:
- first_name: Sven Helge
full_name: Klippstein, Sven Helge
id: '71545'
last_name: Klippstein
- first_name: Ivo
full_name: Kletetzka, Ivo
id: '50769'
last_name: Kletetzka
- first_name: Ilknur
full_name: Sural, Ilknur
last_name: Sural
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
citation:
ama: Klippstein SH, Kletetzka I, Sural I, Schmid H-J. Influence of a prolonged shelf
time on PA12 laser sintering powder and resulting part properties. The International
Journal of Advanced Manufacturing Technology . Published online 2023. doi:https://doi.org/10.1007/s00170-023-11243-1
apa: Klippstein, S. H., Kletetzka, I., Sural, I., & Schmid, H.-J. (2023). Influence
of a prolonged shelf time on PA12 laser sintering powder and resulting part properties.
The International Journal of Advanced Manufacturing Technology . https://doi.org/10.1007/s00170-023-11243-1
bibtex: '@article{Klippstein_Kletetzka_Sural_Schmid_2023, title={Influence of a
prolonged shelf time on PA12 laser sintering powder and resulting part properties},
DOI={https://doi.org/10.1007/s00170-023-11243-1},
journal={The International Journal of Advanced Manufacturing Technology }, publisher={Springer},
author={Klippstein, Sven Helge and Kletetzka, Ivo and Sural, Ilknur and Schmid,
Hans-Joachim}, year={2023} }'
chicago: Klippstein, Sven Helge, Ivo Kletetzka, Ilknur Sural, and Hans-Joachim Schmid.
“Influence of a Prolonged Shelf Time on PA12 Laser Sintering Powder and Resulting
Part Properties.” The International Journal of Advanced Manufacturing Technology
, 2023. https://doi.org/10.1007/s00170-023-11243-1.
ieee: 'S. H. Klippstein, I. Kletetzka, I. Sural, and H.-J. Schmid, “Influence of
a prolonged shelf time on PA12 laser sintering powder and resulting part properties,”
The International Journal of Advanced Manufacturing Technology , 2023,
doi: https://doi.org/10.1007/s00170-023-11243-1.'
mla: Klippstein, Sven Helge, et al. “Influence of a Prolonged Shelf Time on PA12
Laser Sintering Powder and Resulting Part Properties.” The International Journal
of Advanced Manufacturing Technology , Springer, 2023, doi:https://doi.org/10.1007/s00170-023-11243-1.
short: S.H. Klippstein, I. Kletetzka, I. Sural, H.-J. Schmid, The International
Journal of Advanced Manufacturing Technology (2023).
date_created: 2023-03-18T14:28:46Z
date_updated: 2023-09-07T11:57:59Z
department:
- _id: '150'
- _id: '624'
- _id: '219'
- _id: '9'
doi: https://doi.org/10.1007/s00170-023-11243-1
keyword:
- Selective laser sintering
- Shelf life
- Polyamide 12
- powder
- PA2200
- material ageing
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://link.springer.com/article/10.1007/s00170-023-11243-1
oa: '1'
publication: 'The International Journal of Advanced Manufacturing Technology '
publication_status: published
publisher: Springer
quality_controlled: '1'
status: public
title: Influence of a prolonged shelf time on PA12 laser sintering powder and resulting
part properties
type: journal_article
user_id: '50769'
year: '2023'
...
---
_id: '30220'
abstract:
- lang: eng
text: 'In this work, the influences of spherical fillers on the processing properties
and the resulting mechanical properties of laser sintered components are investigated.
For this purpose, micro glass spheres, hollow glass bubbles and mineral spheres
are dry blended to the matrix polymers polyamide 613 and polypropylene with a
filling ratio of 20 and 40 vol%. First, relevant properties of the blends, such
as powder flowability, thermal behavior and melt viscosity, are investigated.
Based on the results, processing parameters are then developed for the LS process
and the mechanical properties of the components are investigated. The aim is to
be able to tailor the mechanical properties of LS components by adding fillers
and thus to create new application areas for additively manufactured components. '
author:
- first_name: Ivo
full_name: Kletetzka, Ivo
id: '50769'
last_name: Kletetzka
- first_name: Roland
full_name: Gawlikowicz, Roland
last_name: Gawlikowicz
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
citation:
ama: 'Kletetzka I, Gawlikowicz R, Schmid H-J. Effects of spherical fillers on the
processability and mechanical properties of PA613 and PP-based LS dry blends.
In: Proceedings of the 33th Annual International Solid Freeform Fabrication
Symposium. Vol 33. Laboratory for Freeform Fabrication and University of Texas;
2022. doi:http://dx.doi.org/10.26153/tsw/44558'
apa: Kletetzka, I., Gawlikowicz, R., & Schmid, H.-J. (2022). Effects of spherical
fillers on the processability and mechanical properties of PA613 and PP-based
LS dry blends. Proceedings of the 33th Annual International Solid Freeform
Fabrication Symposium, 33. http://dx.doi.org/10.26153/tsw/44558
bibtex: '@inproceedings{Kletetzka_Gawlikowicz_Schmid_2022, place={Austin}, title={Effects
of spherical fillers on the processability and mechanical properties of PA613
and PP-based LS dry blends}, volume={33}, DOI={http://dx.doi.org/10.26153/tsw/44558},
booktitle={Proceedings of the 33th Annual International Solid Freeform Fabrication
Symposium}, publisher={Laboratory for Freeform Fabrication and University of Texas},
author={Kletetzka, Ivo and Gawlikowicz, Roland and Schmid, Hans-Joachim}, year={2022}
}'
chicago: 'Kletetzka, Ivo, Roland Gawlikowicz, and Hans-Joachim Schmid. “Effects
of Spherical Fillers on the Processability and Mechanical Properties of PA613
and PP-Based LS Dry Blends.” In Proceedings of the 33th Annual International
Solid Freeform Fabrication Symposium, Vol. 33. Austin: Laboratory for Freeform
Fabrication and University of Texas, 2022. http://dx.doi.org/10.26153/tsw/44558.'
ieee: 'I. Kletetzka, R. Gawlikowicz, and H.-J. Schmid, “Effects of spherical fillers
on the processability and mechanical properties of PA613 and PP-based LS dry blends,”
in Proceedings of the 33th Annual International Solid Freeform Fabrication
Symposium, Austin, 2022, vol. 33, doi: http://dx.doi.org/10.26153/tsw/44558.'
mla: Kletetzka, Ivo, et al. “Effects of Spherical Fillers on the Processability
and Mechanical Properties of PA613 and PP-Based LS Dry Blends.” Proceedings
of the 33th Annual International Solid Freeform Fabrication Symposium, vol.
33, Laboratory for Freeform Fabrication and University of Texas, 2022, doi:http://dx.doi.org/10.26153/tsw/44558.
short: 'I. Kletetzka, R. Gawlikowicz, H.-J. Schmid, in: Proceedings of the 33th
Annual International Solid Freeform Fabrication Symposium, Laboratory for Freeform
Fabrication and University of Texas, Austin, 2022.'
conference:
end_date: 2022-07-27
location: Austin
name: 2022 Annual International Solid Freeform Fabrication Symposium
start_date: 2022-07-25
date_created: 2022-03-10T08:05:46Z
date_updated: 2024-01-17T07:30:39Z
department:
- _id: '150'
- _id: '624'
- _id: '219'
- _id: '9'
doi: http://dx.doi.org/10.26153/tsw/44558
intvolume: ' 33'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://utw10945.utweb.utexas.edu/sites/default/files/2022/Effects%20of%20Spherical%20Fillers%20on%20the%20Processability.pdf
oa: '1'
place: Austin
publication: Proceedings of the 33th Annual International Solid Freeform Fabrication
Symposium
publication_status: published
publisher: Laboratory for Freeform Fabrication and University of Texas
quality_controlled: '1'
status: public
title: Effects of spherical fillers on the processability and mechanical properties
of PA613 and PP-based LS dry blends
type: conference
user_id: '50769'
volume: 33
year: '2022'
...
---
_id: '32874'
author:
- first_name: Ivo
full_name: Kletetzka, Ivo
id: '50769'
last_name: Kletetzka
- first_name: Sven Helge
full_name: Klippstein, Sven Helge
id: '71545'
last_name: Klippstein
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
citation:
ama: 'Kletetzka I, Klippstein SH, Schmid H-J. Shelf Life of Polyamide 12 (PA2200)
Laser Sintering Powder. In: Proceedings of the 33th Annual International Solid
Freeform Fabrication Symposium. Vol 33. Laboratory for Freeform Fabrication
and University of Texas; 2022. doi:http://dx.doi.org/10.26153/tsw/44555'
apa: Kletetzka, I., Klippstein, S. H., & Schmid, H.-J. (2022). Shelf Life of
Polyamide 12 (PA2200) Laser Sintering Powder. Proceedings of the 33th Annual
International Solid Freeform Fabrication Symposium, 33. http://dx.doi.org/10.26153/tsw/44555
bibtex: '@inproceedings{Kletetzka_Klippstein_Schmid_2022, place={Austin}, title={Shelf
Life of Polyamide 12 (PA2200) Laser Sintering Powder}, volume={33}, DOI={http://dx.doi.org/10.26153/tsw/44555},
booktitle={Proceedings of the 33th Annual International Solid Freeform Fabrication
Symposium}, publisher={Laboratory for Freeform Fabrication and University of Texas},
author={Kletetzka, Ivo and Klippstein, Sven Helge and Schmid, Hans-Joachim}, year={2022}
}'
chicago: 'Kletetzka, Ivo, Sven Helge Klippstein, and Hans-Joachim Schmid. “Shelf
Life of Polyamide 12 (PA2200) Laser Sintering Powder.” In Proceedings of the
33th Annual International Solid Freeform Fabrication Symposium, Vol. 33. Austin:
Laboratory for Freeform Fabrication and University of Texas, 2022. http://dx.doi.org/10.26153/tsw/44555.'
ieee: 'I. Kletetzka, S. H. Klippstein, and H.-J. Schmid, “Shelf Life of Polyamide
12 (PA2200) Laser Sintering Powder,” in Proceedings of the 33th Annual International
Solid Freeform Fabrication Symposium, Austin, 2022, vol. 33, doi: http://dx.doi.org/10.26153/tsw/44555.'
mla: Kletetzka, Ivo, et al. “Shelf Life of Polyamide 12 (PA2200) Laser Sintering
Powder.” Proceedings of the 33th Annual International Solid Freeform Fabrication
Symposium, vol. 33, Laboratory for Freeform Fabrication and University of
Texas, 2022, doi:http://dx.doi.org/10.26153/tsw/44555.
short: 'I. Kletetzka, S.H. Klippstein, H.-J. Schmid, in: Proceedings of the 33th
Annual International Solid Freeform Fabrication Symposium, Laboratory for Freeform
Fabrication and University of Texas, Austin, 2022.'
conference:
end_date: 2022-07-27
location: Austin
name: 2022 annual international Solid Freeform Fabrication Symposium
start_date: 2022-07-25
date_created: 2022-08-17T11:11:01Z
date_updated: 2024-01-17T07:29:41Z
department:
- _id: '150'
- _id: '624'
- _id: '219'
- _id: '9'
doi: http://dx.doi.org/10.26153/tsw/44555
intvolume: ' 33'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://utw10945.utweb.utexas.edu/sites/default/files/2022/Shelf%20Life%20of%20Polyamide%2012%20%28PA2200%29%20Laser%20Sinterin.pdf
oa: '1'
place: Austin
publication: Proceedings of the 33th Annual International Solid Freeform Fabrication
Symposium
publication_status: published
publisher: Laboratory for Freeform Fabrication and University of Texas
quality_controlled: '1'
status: public
title: Shelf Life of Polyamide 12 (PA2200) Laser Sintering Powder
type: conference
user_id: '50769'
volume: 33
year: '2022'
...
---
_id: '31871'
author:
- first_name: Ivo
full_name: Kletetzka, Ivo
id: '50769'
last_name: Kletetzka
- first_name: Sven Helge
full_name: Klippstein, Sven Helge
id: '71545'
last_name: Klippstein
citation:
ama: 'Kletetzka I, Klippstein SH. Pulver im 3D-Druck - von Mascarabürsten bis zum
Interieur eines Mini-Coopers (Vortrag). In: 3D-DRUCK HAUTNAH - Der Einfluss
einer Zukunftstechnologie auf unser Leben . Universität Paderborn; 2022.'
apa: Kletetzka, I., & Klippstein, S. H. (2022). Pulver im 3D-Druck - von Mascarabürsten
bis zum Interieur eines Mini-Coopers (Vortrag). 3D-DRUCK HAUTNAH - Der Einfluss
einer Zukunftstechnologie auf unser Leben . 3D-DRUCK HAUTNAH - Der Einfluss
einer Zukunftstechnologie auf unser Leben, Paderborn.
bibtex: '@inproceedings{Kletetzka_Klippstein_2022, title={Pulver im 3D-Druck - von
Mascarabürsten bis zum Interieur eines Mini-Coopers (Vortrag)}, booktitle={3D-DRUCK
HAUTNAH - Der Einfluss einer Zukunftstechnologie auf unser Leben }, publisher={Universität
Paderborn}, author={Kletetzka, Ivo and Klippstein, Sven Helge}, year={2022} }'
chicago: Kletetzka, Ivo, and Sven Helge Klippstein. “Pulver im 3D-Druck - von Mascarabürsten
bis zum Interieur eines Mini-Coopers (Vortrag).” In 3D-DRUCK HAUTNAH - Der
Einfluss einer Zukunftstechnologie auf unser Leben . Universität Paderborn,
2022.
ieee: I. Kletetzka and S. H. Klippstein, “Pulver im 3D-Druck - von Mascarabürsten
bis zum Interieur eines Mini-Coopers (Vortrag),” presented at the 3D-DRUCK HAUTNAH
- Der Einfluss einer Zukunftstechnologie auf unser Leben, Paderborn, 2022.
mla: Kletetzka, Ivo, and Sven Helge Klippstein. “Pulver im 3D-Druck - von Mascarabürsten
bis zum Interieur eines Mini-Coopers (Vortrag).” 3D-DRUCK HAUTNAH - Der Einfluss
einer Zukunftstechnologie auf unser Leben , Universität Paderborn, 2022.
short: 'I. Kletetzka, S.H. Klippstein, in: 3D-DRUCK HAUTNAH - Der Einfluss einer
Zukunftstechnologie auf unser Leben , Universität Paderborn, 2022.'
conference:
end_date: 2022-06-11
location: Paderborn
name: 3D-DRUCK HAUTNAH - Der Einfluss einer Zukunftstechnologie auf unser Leben
start_date: 2022-06-11
date_created: 2022-06-13T14:10:35Z
date_updated: 2023-09-07T11:54:49Z
department:
- _id: '150'
- _id: '624'
- _id: '219'
- _id: '9'
language:
- iso: ger
publication: '3D-DRUCK HAUTNAH - Der Einfluss einer Zukunftstechnologie auf unser
Leben '
publication_status: published
publisher: Universität Paderborn
status: public
title: Pulver im 3D-Druck - von Mascarabürsten bis zum Interieur eines Mini-Coopers
(Vortrag)
type: conference_abstract
user_id: '50769'
year: '2022'
...
---
_id: '24160'
abstract:
- lang: eng
text: "In automotive and other fields of application media-carrying components often
have complex, flow-optimized geometries and are made of plastics for reasons of
weight and cost. Therefore, the laser sintering technology is predestinated to
manufacture these components as it offers a very high degree of design freedom
and good mechanical properties.\r\nFor industrial applications the long-term properties
of the SLS material in contact with liquid media are important and were therefore
investigated for PA12, PP and PA613. Hereby, different media such as motor oil
or Glysantin based coolant were tested with different temperatures and immersion
times of up to 26 weeks. The mechanical properties were tested after immersion
and compared to injection molded samples. Furthermore, laser sintering design
guidelines for media-carrying components were developed. These guidelines for
instance include the minimum wall thickness to ensure media tightness and the
removal of powder from channels with a high length to diameter ratio."
author:
- first_name: Ivo
full_name: Kletetzka, Ivo
id: '50769'
last_name: Kletetzka
- first_name: Christina
full_name: Kummert, Christina
last_name: Kummert
- first_name: Hans-Joachim
full_name: Schmid, Hans-Joachim
id: '464'
last_name: Schmid
orcid: 000-0001-8590-1921
citation:
ama: 'Kletetzka I, Kummert C, Schmid H-J. Laser Sintering Design Guidelines for
media transmitting Components. In: Proceedings of the 32nd Annual International
Solid Freeform Fabrication Symposium. Vol 32. Laboratory for Freeform Fabrication
and University of Texas; 2021. doi:http://dx.doi.org/10.26153/tsw/17548'
apa: Kletetzka, I., Kummert, C., & Schmid, H.-J. (2021). Laser Sintering Design
Guidelines for media transmitting Components. Proceedings of the 32nd Annual
International Solid Freeform Fabrication Symposium, 32. http://dx.doi.org/10.26153/tsw/17548
bibtex: '@inproceedings{Kletetzka_Kummert_Schmid_2021, place={Austin}, title={Laser
Sintering Design Guidelines for media transmitting Components}, volume={32}, DOI={http://dx.doi.org/10.26153/tsw/17548},
booktitle={Proceedings of the 32nd Annual International Solid Freeform Fabrication
Symposium}, publisher={Laboratory for Freeform Fabrication and University of Texas},
author={Kletetzka, Ivo and Kummert, Christina and Schmid, Hans-Joachim}, year={2021}
}'
chicago: 'Kletetzka, Ivo, Christina Kummert, and Hans-Joachim Schmid. “Laser Sintering
Design Guidelines for Media Transmitting Components.” In Proceedings of the
32nd Annual International Solid Freeform Fabrication Symposium, Vol. 32. Austin:
Laboratory for Freeform Fabrication and University of Texas, 2021. http://dx.doi.org/10.26153/tsw/17548.'
ieee: 'I. Kletetzka, C. Kummert, and H.-J. Schmid, “Laser Sintering Design Guidelines
for media transmitting Components,” in Proceedings of the 32nd Annual International
Solid Freeform Fabrication Symposium, Austin, 2021, vol. 32, doi: http://dx.doi.org/10.26153/tsw/17548.'
mla: Kletetzka, Ivo, et al. “Laser Sintering Design Guidelines for Media Transmitting
Components.” Proceedings of the 32nd Annual International Solid Freeform Fabrication
Symposium, vol. 32, Laboratory for Freeform Fabrication and University of
Texas, 2021, doi:http://dx.doi.org/10.26153/tsw/17548.
short: 'I. Kletetzka, C. Kummert, H.-J. Schmid, in: Proceedings of the 32nd Annual
International Solid Freeform Fabrication Symposium, Laboratory for Freeform Fabrication
and University of Texas, Austin, 2021.'
conference:
end_date: 2021-08-04
location: Austin
name: 2021 Annual International Solid Freeform Fabrication Symposium
start_date: 2021-08-02
date_created: 2021-09-13T07:26:09Z
date_updated: 2024-01-17T07:31:46Z
department:
- _id: '150'
- _id: '624'
- _id: '219'
doi: http://dx.doi.org/10.26153/tsw/17548
intvolume: ' 32'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: http://utw10945.utweb.utexas.edu/sites/default/files/2021/019%20Laser%20Sintering%20Design%20Guidelines%20for%20Media%20Transm.pdf
oa: '1'
place: Austin
publication: Proceedings of the 32nd Annual International Solid Freeform Fabrication
Symposium
publication_status: published
publisher: Laboratory for Freeform Fabrication and University of Texas
quality_controlled: '1'
status: public
title: Laser Sintering Design Guidelines for media transmitting Components
type: conference
user_id: '50769'
volume: 32
year: '2021'
...