---
_id: '59873'
abstract:
- lang: eng
text: This paper focuses on the failure behavior of clinched specimens with various
stiffnesses under shear tensile loading. The primary objective is to assess the
influence of the specimen stiffness with an arrangement of clinched joints. The
specimen stiffness depends on several variables. In addition to the material selection,
the specific choice of geometry and the design of the clinched joints must also
be taken into account. A number of experiments was conducted to investigate the
failure behavior of specimens with an arrangement of three clinched joints under
shear tensile loading. These configurations were subjected to shear tensile tests,
with force displacement curves recorded for each specimen to provide a detailed
characterization of their structural response. The stiffness is modified by altering
the specimen width, which has marginal impact on the maximum force. The experimental
findings indicate that reducing the specimen stiffness results in a shift in the
type of stress, with the failure behavior becoming increasingly influenced by
bending stress. These results offer important insights for the design of clinched
joint assemblies, indicating that it is feasible to achieve the desired properties
by changing the specimen stiffness.
article_number: '01080'
author:
- first_name: Eugen
full_name: Wolf, Eugen
last_name: Wolf
- first_name: Alexander
full_name: Brosius, Alexander
last_name: Brosius
citation:
ama: 'Wolf E, Brosius A. Investigation failure behavior in the shear tensile test
with variety of specimen stiffness. In: MATEC Web of Conferences. Vol 408.
EDP Sciences; 2025. doi:10.1051/matecconf/202540801080'
apa: Wolf, E., & Brosius, A. (2025). Investigation failure behavior in the shear
tensile test with variety of specimen stiffness. MATEC Web of Conferences,
408, Article 01080. https://doi.org/10.1051/matecconf/202540801080
bibtex: '@inproceedings{Wolf_Brosius_2025, title={Investigation failure behavior
in the shear tensile test with variety of specimen stiffness}, volume={408}, DOI={10.1051/matecconf/202540801080},
number={01080}, booktitle={MATEC Web of Conferences}, publisher={EDP Sciences},
author={Wolf, Eugen and Brosius, Alexander}, year={2025} }'
chicago: Wolf, Eugen, and Alexander Brosius. “Investigation Failure Behavior in
the Shear Tensile Test with Variety of Specimen Stiffness.” In MATEC Web of
Conferences, Vol. 408. EDP Sciences, 2025. https://doi.org/10.1051/matecconf/202540801080.
ieee: 'E. Wolf and A. Brosius, “Investigation failure behavior in the shear tensile
test with variety of specimen stiffness,” in MATEC Web of Conferences,
Lisbon, 2025, vol. 408, doi: 10.1051/matecconf/202540801080.'
mla: Wolf, Eugen, and Alexander Brosius. “Investigation Failure Behavior in the
Shear Tensile Test with Variety of Specimen Stiffness.” MATEC Web of Conferences,
vol. 408, 01080, EDP Sciences, 2025, doi:10.1051/matecconf/202540801080.
short: 'E. Wolf, A. Brosius, in: MATEC Web of Conferences, EDP Sciences, 2025.'
conference:
end_date: 2025-06-05
location: Lisbon
name: 44th Conference of the International Deep Drawing Research Group
start_date: 2025-06-01
date_created: 2025-05-13T05:41:58Z
date_updated: 2025-06-23T07:25:21Z
department:
- _id: '630'
doi: 10.1051/matecconf/202540801080
intvolume: ' 408'
keyword:
- Joining
- Sheet Metal
- Stiffness
- Clinching
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
publication: MATEC Web of Conferences
publication_identifier:
issn:
- 2261-236X
publication_status: published
publisher: EDP Sciences
status: public
title: Investigation failure behavior in the shear tensile test with variety of specimen
stiffness
type: conference
user_id: '104464'
volume: 408
year: '2025'
...
---
_id: '59485'
abstract:
- lang: eng
text: This paper focuses on the failure behavior of specimens with various configurations
of clinched joints under shear tensile loading. The primary objective is to assess
the influence of the joining direction and the spatial arrangement of clinched
joints on their mechanical performance. A number of experiments was conducted,
focusing on three clinched joints arranged in different configurations, each varying
in terms of joining direction and spacing. These configurations were subjected
to shear tensile tests, with force-displacement curves recorded for each sample
to provide a detailed characterization of their structural response. The experimental
findings indicate that the specific arrangement of the clinched joints, in terms
of joining direction, has a marginal impact on the overall failure behavior. This
suggests that intricate modifications to the joining direction are unnecessary
to achieve improved mechanical performance in such applications. These results
offer valuable insights for the design of clinched joint assemblies, indicating
that simplified joining strategies may suffice without compromising structural
integrity under shear loading.
author:
- first_name: Eugen
full_name: Wolf, Eugen
last_name: Wolf
- first_name: Alexander
full_name: Brosius, Alexander
last_name: Brosius
citation:
ama: 'Wolf E, Brosius A. Investigation failure behavior in the shear tensile test
with respect to the arrangements of clinched joints. In: Materials Research
Proceedings. Vol 52. Materials Research Forum LLC; 2025:86-92. doi:10.21741/9781644903551-11'
apa: Wolf, E., & Brosius, A. (2025). Investigation failure behavior in the shear
tensile test with respect to the arrangements of clinched joints. Materials
Research Proceedings, 52, 86–92. https://doi.org/10.21741/9781644903551-11
bibtex: '@inproceedings{Wolf_Brosius_2025, title={Investigation failure behavior
in the shear tensile test with respect to the arrangements of clinched joints},
volume={52}, DOI={10.21741/9781644903551-11},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Wolf, Eugen and Brosius, Alexander}, year={2025}, pages={86–92}
}'
chicago: Wolf, Eugen, and Alexander Brosius. “Investigation Failure Behavior in
the Shear Tensile Test with Respect to the Arrangements of Clinched Joints.” In
Materials Research Proceedings, 52:86–92. Materials Research Forum LLC,
2025. https://doi.org/10.21741/9781644903551-11.
ieee: 'E. Wolf and A. Brosius, “Investigation failure behavior in the shear tensile
test with respect to the arrangements of clinched joints,” in Materials Research
Proceedings, Paderborn, 2025, vol. 52, pp. 86–92, doi: 10.21741/9781644903551-11.'
mla: Wolf, Eugen, and Alexander Brosius. “Investigation Failure Behavior in the
Shear Tensile Test with Respect to the Arrangements of Clinched Joints.” Materials
Research Proceedings, vol. 52, Materials Research Forum LLC, 2025, pp. 86–92,
doi:10.21741/9781644903551-11.
short: 'E. Wolf, A. Brosius, in: Materials Research Proceedings, Materials Research
Forum LLC, 2025, pp. 86–92.'
conference:
end_date: 2025-04-03
location: Paderborn
name: 21st International Conference on Sheet Metal
start_date: 2025-04-01
date_created: 2025-04-10T11:28:28Z
date_updated: 2025-06-23T07:26:23Z
department:
- _id: '630'
doi: 10.21741/9781644903551-11
intvolume: ' 52'
keyword:
- Joining
- Sheet Metal
- Clinching
language:
- iso: eng
page: ' 86 - 92'
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
status: public
title: Investigation failure behavior in the shear tensile test with respect to the
arrangements of clinched joints
type: conference
user_id: '104464'
volume: 52
year: '2025'
...
---
_id: '60290'
abstract:
- lang: eng
text: The constantly increasing demand for climate protection and resource conservation
requires innovative and versatile joining processes that improve adaptability
to the joining task and robustness to enable flexible manufacturing on a production
line. Therefore, the versatile SPR (V-SPR) and tumbling SPR (T-SPR) were developed.
Using the example of a mixed material combination HCT590X+Z (t0 = 1.0 mm) / EN
AW-6014 T4 (t0 = 2.0 mm), these processes were examined and compared with regard
to the binding mechanisms form closure and force closure using micrographs, non-destructive
resistance measurements and destructive torsion tests. For this purpose, a new
sample geometry was defined, and the methods were adapted to the SPR process variants.
author:
- first_name: Stephan
full_name: Lüder, Stephan
last_name: Lüder
- first_name: Pia Katharina
full_name: Holtkamp, Pia Katharina
id: '44935'
last_name: Holtkamp
- first_name: Simon
full_name: Wituschek, Simon
last_name: Wituschek
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Michael
full_name: Lechner, Michael
last_name: Lechner
- first_name: Hans Christian
full_name: Schmale, Hans Christian
last_name: Schmale
citation:
ama: 'Lüder S, Holtkamp PK, Wituschek S, et al. Analysis of the binding mechanisms
depending on versatile process variants of self-piercing riveting. In: Meschut
G, Bobbert M, Duflou J, et al., eds. Materials Research Proceedings. Vol
52. Sheet Metal 2025. Materials Research Forum LLC; 2025:101-108. doi:10.21741/9781644903551-13'
apa: Lüder, S., Holtkamp, P. K., Wituschek, S., Bobbert, M., Meschut, G., Lechner,
M., & Schmale, H. C. (2025). Analysis of the binding mechanisms depending
on versatile process variants of self-piercing riveting. In G. Meschut, M. Bobbert,
J. Duflou, L. Fratini, H. Hagenah, P. A. F. Martins, M. Merklein, & F. Micari
(Eds.), Materials Research Proceedings (Vol. 52, pp. 101–108). Materials
Research Forum LLC. https://doi.org/10.21741/9781644903551-13
bibtex: '@inproceedings{Lüder_Holtkamp_Wituschek_Bobbert_Meschut_Lechner_Schmale_2025,
place={Millersville}, series={Sheet Metal 2025}, title={Analysis of the binding
mechanisms depending on versatile process variants of self-piercing riveting},
volume={52}, DOI={10.21741/9781644903551-13},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Lüder, Stephan and Holtkamp, Pia Katharina and Wituschek, Simon
and Bobbert, Mathias and Meschut, Gerson and Lechner, Michael and Schmale, Hans
Christian}, editor={Meschut, Gerson and Bobbert, Mathias and Duflou, Joost and
Fratini, Livan and Hagenah, Hinnerk and Martins, Paulo A. F. and Merklein, Marion
and Micari, Fabrizio}, year={2025}, pages={101–108}, collection={Sheet Metal 2025}
}'
chicago: 'Lüder, Stephan, Pia Katharina Holtkamp, Simon Wituschek, Mathias Bobbert,
Gerson Meschut, Michael Lechner, and Hans Christian Schmale. “Analysis of the
Binding Mechanisms Depending on Versatile Process Variants of Self-Piercing Riveting.”
In Materials Research Proceedings, edited by Gerson Meschut, Mathias Bobbert,
Joost Duflou, Livan Fratini, Hinnerk Hagenah, Paulo A. F. Martins, Marion Merklein,
and Fabrizio Micari, 52:101–8. Sheet Metal 2025. Millersville: Materials Research
Forum LLC, 2025. https://doi.org/10.21741/9781644903551-13.'
ieee: 'S. Lüder et al., “Analysis of the binding mechanisms depending on
versatile process variants of self-piercing riveting,” in Materials Research
Proceedings, Paderborn, 2025, vol. 52, pp. 101–108, doi: 10.21741/9781644903551-13.'
mla: Lüder, Stephan, et al. “Analysis of the Binding Mechanisms Depending on Versatile
Process Variants of Self-Piercing Riveting.” Materials Research Proceedings,
edited by Gerson Meschut et al., vol. 52, Materials Research Forum LLC, 2025,
pp. 101–08, doi:10.21741/9781644903551-13.
short: 'S. Lüder, P.K. Holtkamp, S. Wituschek, M. Bobbert, G. Meschut, M. Lechner,
H.C. Schmale, in: G. Meschut, M. Bobbert, J. Duflou, L. Fratini, H. Hagenah, P.A.F.
Martins, M. Merklein, F. Micari (Eds.), Materials Research Proceedings, Materials
Research Forum LLC, Millersville, 2025, pp. 101–108.'
conference:
end_date: 2025-04-03
location: Paderborn
name: 21st International Conference on Sheet Metal
start_date: 2025-04-01
date_created: 2025-06-20T10:13:22Z
date_updated: 2025-06-27T08:19:26Z
department:
- _id: '630'
- _id: '43'
- _id: '157'
doi: 10.21741/9781644903551-13
editor:
- first_name: Gerson
full_name: Meschut, Gerson
last_name: Meschut
- first_name: Mathias
full_name: Bobbert, Mathias
last_name: Bobbert
- first_name: Joost
full_name: Duflou, Joost
last_name: Duflou
- first_name: Livan
full_name: Fratini, Livan
last_name: Fratini
- first_name: Hinnerk
full_name: Hagenah, Hinnerk
last_name: Hagenah
- first_name: Paulo A. F.
full_name: Martins, Paulo A. F.
last_name: Martins
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
- first_name: Fabrizio
full_name: Micari, Fabrizio
last_name: Micari
extern: '1'
intvolume: ' 52'
keyword:
- Joining
- Self-Piercing Riveting
- Sheet Metal
language:
- iso: eng
page: 101 - 108
place: Millersville
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
series_title: Sheet Metal 2025
status: public
title: Analysis of the binding mechanisms depending on versatile process variants
of self-piercing riveting
type: conference
user_id: '44935'
volume: 52
year: '2025'
...
---
_id: '60285'
abstract:
- lang: eng
text: This paper examines the impact of a rotationally superimposed punch stroke
on the binding mechanisms of clinched joints of aluminum sheets. As part of the
development of a method for ensuring the versatility of clinching, an additional
rotational movement of the punch was introduced as a control variable to influence
friction in the mechanical joining process. The effect of rotational superimposition
on the force-displacement curve of the clinching processes was investigated using
four test variants with different kinematics. The primary objective was to evaluate
the binding mechanisms that maintain the integrity of the clinched joint. To evaluate
the force closure of the resulting joint, two testing methods were employed throughout
the course of the research, non-destructive resistance measurement using four-wire
sensing method and destructive torsion testing. A crucial factor influencing the
efficacy of the process is surface cleanliness, as contaminants between joining
partners can impede the effectiveness of the clinched joint. Therefore, all specimens
were meticulously cleaned prior to experimentation. This method exhibits promising
potential in creating clinched joints that align with the demands of flexible
manufacturing environments.
article_number: '01086'
author:
- first_name: Stephan
full_name: Lüder, Stephan
last_name: Lüder
- first_name: Eugen
full_name: Wolf, Eugen
last_name: Wolf
- first_name: Hans Christian
full_name: Schmale, Hans Christian
last_name: Schmale
- first_name: Alexander
full_name: Brosius, Alexander
last_name: Brosius
citation:
ama: 'Lüder S, Wolf E, Schmale HC, Brosius A. Investigation of the impact of a rotationally
superimposed punch stroke on the binding mechanisms of a clinched joint. In: MATEC
Web of Conferences. Vol 408. EDP Sciences; 2025. doi:10.1051/matecconf/202540801086'
apa: Lüder, S., Wolf, E., Schmale, H. C., & Brosius, A. (2025). Investigation
of the impact of a rotationally superimposed punch stroke on the binding mechanisms
of a clinched joint. MATEC Web of Conferences, 408, Article 01086.
https://doi.org/10.1051/matecconf/202540801086
bibtex: '@inproceedings{Lüder_Wolf_Schmale_Brosius_2025, title={Investigation of
the impact of a rotationally superimposed punch stroke on the binding mechanisms
of a clinched joint}, volume={408}, DOI={10.1051/matecconf/202540801086},
number={01086}, booktitle={MATEC Web of Conferences}, publisher={EDP Sciences},
author={Lüder, Stephan and Wolf, Eugen and Schmale, Hans Christian and Brosius,
Alexander}, year={2025} }'
chicago: Lüder, Stephan, Eugen Wolf, Hans Christian Schmale, and Alexander Brosius.
“Investigation of the Impact of a Rotationally Superimposed Punch Stroke on the
Binding Mechanisms of a Clinched Joint.” In MATEC Web of Conferences, Vol.
408. EDP Sciences, 2025. https://doi.org/10.1051/matecconf/202540801086.
ieee: 'S. Lüder, E. Wolf, H. C. Schmale, and A. Brosius, “Investigation of the impact
of a rotationally superimposed punch stroke on the binding mechanisms of a clinched
joint,” in MATEC Web of Conferences, Lisbon, 2025, vol. 408, doi: 10.1051/matecconf/202540801086.'
mla: Lüder, Stephan, et al. “Investigation of the Impact of a Rotationally Superimposed
Punch Stroke on the Binding Mechanisms of a Clinched Joint.” MATEC Web of Conferences,
vol. 408, 01086, EDP Sciences, 2025, doi:10.1051/matecconf/202540801086.
short: 'S. Lüder, E. Wolf, H.C. Schmale, A. Brosius, in: MATEC Web of Conferences,
EDP Sciences, 2025.'
conference:
end_date: 2025-06-05
location: Lisbon
name: '44th Conference of the International Deep Drawing Research Group (IDDRG 2025) '
start_date: 2025-06-01
date_created: 2025-06-20T06:57:16Z
date_updated: 2025-07-18T09:01:46Z
department:
- _id: '630'
doi: 10.1051/matecconf/202540801086
extern: '1'
intvolume: ' 408'
keyword:
- Joining
- Sheet Metal
- Tribology
- Clinching
language:
- iso: eng
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
publication: MATEC Web of Conferences
publication_identifier:
issn:
- 2261-236X
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
status: public
title: Investigation of the impact of a rotationally superimposed punch stroke on
the binding mechanisms of a clinched joint
type: conference
user_id: '104468'
volume: 408
year: '2025'
...
---
_id: '64894'
abstract:
- lang: eng
text: "This dataset contains experimental measurements of the radial dynamic and
quasi-static characteristics of four different types of Rubber-Metal Bushings
(RMBs) used in the suspension system of a passenger car under harmonic displacement
excitation. For each bushing type, 2–3 individual specimens were tested.\r\n \r\nQuasi-static
measurements were performed at a constant excitation frequency of 0.05 Hz with
varying displacement amplitudes. Dynamic measurements were conducted with displacement
amplitudes ranging from 0.04 mm to 0.3 mm and excitation frequencies of 2, 5,
10, ..., up to 100 Hz.\r\n\r\nThe data is structured by bushing type, measurement
mode, amplitude, and frequency, and is provided in *.csv and *.hrm format. It
is intended to support further research in modeling rubber-metal bushings and
parameter identification techniques."
author:
- first_name: Jan
full_name: Schütte, Jan
id: '22109'
last_name: Schütte
orcid: 0000-0001-9025-9742
citation:
ama: 'Schütte J. Experimental Dataset: Force and Displacement Measurements of
Four Rubber-Metal Bushing Types from a Passenger Car under Harmonic Displacement
Excitation. LibreCat University; 2025. doi:10.5281/ZENODO.14851317'
apa: 'Schütte, J. (2025). Experimental Dataset: Force and Displacement Measurements
of Four Rubber-Metal Bushing Types from a Passenger Car under Harmonic Displacement
Excitation. LibreCat University. https://doi.org/10.5281/ZENODO.14851317'
bibtex: '@book{Schütte_2025, title={Experimental Dataset: Force and Displacement
Measurements of Four Rubber-Metal Bushing Types from a Passenger Car under Harmonic
Displacement Excitation}, DOI={10.5281/ZENODO.14851317},
publisher={LibreCat University}, author={Schütte, Jan}, year={2025} }'
chicago: 'Schütte, Jan. Experimental Dataset: Force and Displacement Measurements
of Four Rubber-Metal Bushing Types from a Passenger Car under Harmonic Displacement
Excitation. LibreCat University, 2025. https://doi.org/10.5281/ZENODO.14851317.'
ieee: 'J. Schütte, Experimental Dataset: Force and Displacement Measurements
of Four Rubber-Metal Bushing Types from a Passenger Car under Harmonic Displacement
Excitation. LibreCat University, 2025.'
mla: 'Schütte, Jan. Experimental Dataset: Force and Displacement Measurements
of Four Rubber-Metal Bushing Types from a Passenger Car under Harmonic Displacement
Excitation. LibreCat University, 2025, doi:10.5281/ZENODO.14851317.'
short: 'J. Schütte, Experimental Dataset: Force and Displacement Measurements of
Four Rubber-Metal Bushing Types from a Passenger Car under Harmonic Displacement
Excitation, LibreCat University, 2025.'
date_created: 2026-03-11T10:22:01Z
date_updated: 2026-03-11T10:25:23Z
department:
- _id: '151'
doi: 10.5281/ZENODO.14851317
keyword:
- bushing
- experimental data
- rubber-metal-bushing
- Dataset suspension
publisher: LibreCat University
status: public
title: 'Experimental Dataset: Force and Displacement Measurements of Four Rubber-Metal
Bushing Types from a Passenger Car under Harmonic Displacement Excitation'
type: research_data
user_id: '22109'
year: '2025'
...
---
_id: '55999'
abstract:
- lang: eng
text: Clean hydrogen is a key aspect of carbon neutrality, necessitating robust
methods for monitoring hydrogen concentration in critical infrastructures like
pipelines or power plants. While semiconducting metal oxides such as In2O3 can
monitor gas concentrations down to the ppm range, they often exhibit cross-sensitivity
to other gases like H2O. In this study, we investigated whether cyclic optical
illumination of a gas-sensitive In2O3 layer creates identifiable changes in a
gas sensor´s electronic resistance that can be linked to H2 and H2O concentrations
via machine learning. We exposed nanostructured In2O3 with a large surface area
of 95 m2 g-1 to H2 concentrations (0-800 ppm) and relative humidity (0-70%) under
cyclic activation utilizing blue light. The sensors were tested for 20 classes
of gas combinations. A support vector machine achieved classification rates up
to 92.0%, with reliable reproducibility (88.2 ± 2.7%) across five individual sensors
using 10-fold cross-validation. Our findings suggest that cyclic optical activation
can be used as a tool to classify H2 and H2O concentrations.
article_type: original
author:
- first_name: 'Dominik '
full_name: 'Baier, Dominik '
last_name: Baier
- first_name: 'Alexander '
full_name: 'Krüger, Alexander '
last_name: Krüger
- first_name: 'Thorsten '
full_name: 'Wagner, Thorsten '
last_name: Wagner
- first_name: Michael
full_name: Tiemann, Michael
id: '23547'
last_name: Tiemann
orcid: 0000-0003-1711-2722
- first_name: Christian
full_name: Weinberger, Christian
id: '11848'
last_name: Weinberger
citation:
ama: 'Baier D, Krüger A, Wagner T, Tiemann M, Weinberger C. Gas Sensing with Nanoporous
In2O3 under Cyclic Optical Activation: Machine Learning-Aided Classification of
H2 and H2O. Chemosensors. 2024;12(9):178. doi:10.3390/chemosensors12090178'
apa: 'Baier, D., Krüger, A., Wagner, T., Tiemann, M., & Weinberger, C. (2024).
Gas Sensing with Nanoporous In2O3 under Cyclic Optical Activation: Machine Learning-Aided
Classification of H2 and H2O. Chemosensors, 12(9), 178. https://doi.org/10.3390/chemosensors12090178'
bibtex: '@article{Baier_Krüger_Wagner_Tiemann_Weinberger_2024, title={Gas Sensing
with Nanoporous In2O3 under Cyclic Optical Activation: Machine Learning-Aided
Classification of H2 and H2O}, volume={12}, DOI={10.3390/chemosensors12090178},
number={9}, journal={Chemosensors}, publisher={MDPI}, author={Baier, Dominik and
Krüger, Alexander and Wagner, Thorsten and Tiemann, Michael and Weinberger,
Christian}, year={2024}, pages={178} }'
chicago: 'Baier, Dominik , Alexander Krüger, Thorsten Wagner, Michael Tiemann,
and Christian Weinberger. “Gas Sensing with Nanoporous In2O3 under Cyclic Optical
Activation: Machine Learning-Aided Classification of H2 and H2O.” Chemosensors
12, no. 9 (2024): 178. https://doi.org/10.3390/chemosensors12090178.'
ieee: 'D. Baier, A. Krüger, T. Wagner, M. Tiemann, and C. Weinberger, “Gas Sensing
with Nanoporous In2O3 under Cyclic Optical Activation: Machine Learning-Aided
Classification of H2 and H2O,” Chemosensors, vol. 12, no. 9, p. 178, 2024,
doi: 10.3390/chemosensors12090178.'
mla: 'Baier, Dominik, et al. “Gas Sensing with Nanoporous In2O3 under Cyclic Optical
Activation: Machine Learning-Aided Classification of H2 and H2O.” Chemosensors,
vol. 12, no. 9, MDPI, 2024, p. 178, doi:10.3390/chemosensors12090178.'
short: D. Baier, A. Krüger, T. Wagner, M. Tiemann, C. Weinberger, Chemosensors 12
(2024) 178.
date_created: 2024-09-03T13:49:42Z
date_updated: 2025-11-26T12:14:21Z
ddc:
- '540'
department:
- _id: '2'
- _id: '307'
doi: 10.3390/chemosensors12090178
file:
- access_level: closed
content_type: application/pdf
creator: cweinber
date_created: 2024-09-03T13:58:18Z
date_updated: 2024-09-03T13:58:18Z
file_id: '56000'
file_name: chemosensors-12-00178.pdf
file_size: 3275869
relation: main_file
success: 1
file_date_updated: 2024-09-03T13:58:18Z
has_accepted_license: '1'
intvolume: ' 12'
issue: '9'
keyword:
- resistive gas sensor
- chemiresistor
- semiconductor
- metal oxide
- In2O3
- mesoporous
- hydrogen
- humidtiy
- machine learning
- sustainable
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.mdpi.com/2227-9040/12/9/178
oa: '1'
page: '178'
publication: Chemosensors
publication_identifier:
issn:
- 2227-9040
publication_status: published
publisher: MDPI
quality_controlled: '1'
status: public
title: 'Gas Sensing with Nanoporous In2O3 under Cyclic Optical Activation: Machine
Learning-Aided Classification of H2 and H2O'
type: journal_article
user_id: '11848'
volume: 12
year: '2024'
...
---
_id: '57699'
abstract:
- lang: eng
text: The optimization of process parameters in powder Directed Energy Deposition
(DED) is essential for achieving consistent, high-quality bead geometries, which
directly influence the performance and structural integrity of fabricated components.
As a subset of additive manufacturing (AM), the DED process, also referred to
as laser metal deposition (LMD), enables precise, layer-by-layer material deposition,
making it highly suitable for complex geometries and part repair applications.
Critical parameters, such as the laser power, feed rate, powder mass flow, and
substrate temperature govern the deposition process, impacting the bead height,
width, contact angle, and dilution. Inconsistent control over these variables
can lead to defects, such as poor bonding, dimensional inaccuracies, and material
weaknesses, ultimately compromising the final product. This paper investigates
the effects of various process parameters, specifically the substrate temperature,
on bead track geometry in DED processes for stainless steel (1.4404). A specialized
experimental setup, integrated within a DED machine, facilitates the controlled
thermal conditioning of sample sheets. Using Design of Experiments (DoE) methods,
individual bead marks are generated and analyzed to assess geometric characteristics.
Regression models, including both linear and quadratic approaches, are constructed
to predict machine parameters for achieving the desired bead geometry at different
substrate temperatures. Validation experiments confirm the accuracy and reliability
of the models, particularly in predicting the bead height, bead width, and contact
angle across a broad range of substrate temperatures. However, the models demonstrated
limitations in accurately predicting dilution, indicating the need for further
refinement. Despite some deviations in measured values, successful fabrication
is achieved, demonstrating robust bonding between the bead and substrate. The
developed models offer insights into optimizing DED process parameters to achieve
desired bead characteristics, advancing the precision and reliability of additive
manufacturing technology. Future work will focus on refining the regression models
to improve predictions, particularly for dilution, and further investigate non-linear
interactions between process variables.
article_number: '1353'
article_type: original
author:
- first_name: Deviprasad
full_name: Chalicheemalapalli Jayasankar, Deviprasad
id: '49504'
last_name: Chalicheemalapalli Jayasankar
orcid: https://orcid.org/ 0000-0002-3446-2444
- first_name: Stefan
full_name: Gnaase, Stefan
id: '25730'
last_name: Gnaase
- first_name: Dennis
full_name: Lehnert, Dennis
id: '90491'
last_name: Lehnert
- first_name: Artur
full_name: Walter, Artur
last_name: Walter
- first_name: Robin
full_name: Rohling, Robin
last_name: Rohling
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: 'Chalicheemalapalli Jayasankar D, Gnaase S, Lehnert D, Walter A, Rohling R,
Tröster T. Effect of Substrate Temperature on Bead Track Geometry of 316L in Directed
Energy Deposition: Investigation and Regression Modeling. Metals. 2024;14(12).
doi:10.3390/met14121353'
apa: 'Chalicheemalapalli Jayasankar, D., Gnaase, S., Lehnert, D., Walter, A., Rohling,
R., & Tröster, T. (2024). Effect of Substrate Temperature on Bead Track Geometry
of 316L in Directed Energy Deposition: Investigation and Regression Modeling.
Metals, 14(12), Article 1353. https://doi.org/10.3390/met14121353'
bibtex: '@article{Chalicheemalapalli Jayasankar_Gnaase_Lehnert_Walter_Rohling_Tröster_2024,
title={Effect of Substrate Temperature on Bead Track Geometry of 316L in Directed
Energy Deposition: Investigation and Regression Modeling}, volume={14}, DOI={10.3390/met14121353}, number={121353},
journal={Metals}, publisher={MDPI AG}, author={Chalicheemalapalli Jayasankar,
Deviprasad and Gnaase, Stefan and Lehnert, Dennis and Walter, Artur and Rohling,
Robin and Tröster, Thomas}, year={2024} }'
chicago: 'Chalicheemalapalli Jayasankar, Deviprasad, Stefan Gnaase, Dennis Lehnert,
Artur Walter, Robin Rohling, and Thomas Tröster. “Effect of Substrate Temperature
on Bead Track Geometry of 316L in Directed Energy Deposition: Investigation and
Regression Modeling.” Metals 14, no. 12 (2024). https://doi.org/10.3390/met14121353.'
ieee: 'D. Chalicheemalapalli Jayasankar, S. Gnaase, D. Lehnert, A. Walter, R. Rohling,
and T. Tröster, “Effect of Substrate Temperature on Bead Track Geometry of 316L
in Directed Energy Deposition: Investigation and Regression Modeling,” Metals,
vol. 14, no. 12, Art. no. 1353, 2024, doi: 10.3390/met14121353.'
mla: 'Chalicheemalapalli Jayasankar, Deviprasad, et al. “Effect of Substrate Temperature
on Bead Track Geometry of 316L in Directed Energy Deposition: Investigation and
Regression Modeling.” Metals, vol. 14, no. 12, 1353, MDPI AG, 2024, doi:10.3390/met14121353.'
short: D. Chalicheemalapalli Jayasankar, S. Gnaase, D. Lehnert, A. Walter, R. Rohling,
T. Tröster, Metals 14 (2024).
date_created: 2024-12-10T12:13:23Z
date_updated: 2026-03-20T08:44:28Z
ddc:
- '670'
department:
- _id: '321'
- _id: '149'
- _id: '9'
doi: 10.3390/met14121353
has_accepted_license: '1'
intvolume: ' 14'
issue: '12'
keyword:
- additive manufacturing
- direct energy deposition
- laser metal deposition
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.mdpi.com/2075-4701/14/12/1353
oa: '1'
publication: Metals
publication_identifier:
issn:
- 2075-4701
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: 'Effect of Substrate Temperature on Bead Track Geometry of 316L in Directed
Energy Deposition: Investigation and Regression Modeling'
type: journal_article
user_id: '49504'
volume: 14
year: '2024'
...
---
_id: '56089'
abstract:
- lang: eng
text: Additive manufacturing (AM) technologies enable near-net-shape designs
and demand-oriented material usage, which significantly minimizes waste. This
points to a substantial opportunity for further optimization in material savings
and process design. The current study delves into the advancement of sustainable
manufacturing practices in the automotive industry, emphasizing the crucial role
of lightweight construction concepts and AM technologies in enhancing resource
efficiency and reducing greenhouse gas emissions. By exploring the integration
of novel AM techniques such as selective laser melting (SLM) and laser metal deposition
(LMD), the study aims to overcome existing limitations like slow build-up rates
and limited component resolution. The study’s core objective revolves around the
development and validation of a continuous process chain that synergizes different
AM routes. In the current study, the continuous process chain for DMG MORI Lasertec
65 3D’s LMD system and the DMG MORI Lasertec 30 3D’s was demonstrated using 316L
and 1.2709 steel materials. This integrated approach is designed to significantly
curtail process times and minimize component costs, thus suggesting an industry-oriented
process chain for future manufacturing paradigms. Additionally, the research investigates
the production and material behavior of components under varying manufacturing
processes, material combinations, and boundary layer materials. The culmination
of this study is the validation of the proposed process route through a technology
demonstrator, assessing its scalability and setting a benchmark for resource-efficient
manufacturing in the automotive sector.
article_number: '772'
article_type: original
author:
- first_name: Deviprasad
full_name: Chalicheemalapalli Jayasankar, Deviprasad
id: '49504'
last_name: Chalicheemalapalli Jayasankar
orcid: https://orcid.org/ 0000-0002-3446-2444
- first_name: Stefan
full_name: Gnaase, Stefan
id: '25730'
last_name: Gnaase
- first_name: Maximilian Alexander
full_name: Kaiser, Maximilian Alexander
id: '72351'
last_name: Kaiser
orcid: 0009-0008-1333-3396
- first_name: Dennis
full_name: Lehnert, Dennis
id: '90491'
last_name: Lehnert
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: 'Chalicheemalapalli Jayasankar D, Gnaase S, Kaiser MA, Lehnert D, Tröster T.
Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD for High-Performance
Applications. Metals. 2024;14(7). doi:10.3390/met14070772'
apa: 'Chalicheemalapalli Jayasankar, D., Gnaase, S., Kaiser, M. A., Lehnert, D.,
& Tröster, T. (2024). Advancements in Hybrid Additive Manufacturing: Integrating
SLM and LMD for High-Performance Applications. Metals, 14(7), Article
772. https://doi.org/10.3390/met14070772'
bibtex: '@article{Chalicheemalapalli Jayasankar_Gnaase_Kaiser_Lehnert_Tröster_2024,
title={Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD
for High-Performance Applications}, volume={14}, DOI={10.3390/met14070772},
number={7772}, journal={Metals}, publisher={MDPI AG}, author={Chalicheemalapalli
Jayasankar, Deviprasad and Gnaase, Stefan and Kaiser, Maximilian Alexander and
Lehnert, Dennis and Tröster, Thomas}, year={2024} }'
chicago: 'Chalicheemalapalli Jayasankar, Deviprasad, Stefan Gnaase, Maximilian Alexander
Kaiser, Dennis Lehnert, and Thomas Tröster. “Advancements in Hybrid Additive Manufacturing:
Integrating SLM and LMD for High-Performance Applications.” Metals 14,
no. 7 (2024). https://doi.org/10.3390/met14070772.'
ieee: 'D. Chalicheemalapalli Jayasankar, S. Gnaase, M. A. Kaiser, D. Lehnert, and
T. Tröster, “Advancements in Hybrid Additive Manufacturing: Integrating SLM and
LMD for High-Performance Applications,” Metals, vol. 14, no. 7, Art. no.
772, 2024, doi: 10.3390/met14070772.'
mla: 'Chalicheemalapalli Jayasankar, Deviprasad, et al. “Advancements in Hybrid
Additive Manufacturing: Integrating SLM and LMD for High-Performance Applications.”
Metals, vol. 14, no. 7, 772, MDPI AG, 2024, doi:10.3390/met14070772.'
short: D. Chalicheemalapalli Jayasankar, S. Gnaase, M.A. Kaiser, D. Lehnert, T.
Tröster, Metals 14 (2024).
date_created: 2024-09-10T10:19:32Z
date_updated: 2026-03-20T08:44:23Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: 10.3390/met14070772
intvolume: ' 14'
issue: '7'
keyword:
- additive manufacturing (AM)
- selective laser melting (SLM)
- laser metal deposition (LMD)
- hybrid manufacturing
- process optimization
- 316L
- '1.2709'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.mdpi.com/2075-4701/14/7/772
oa: '1'
publication: Metals
publication_identifier:
issn:
- 2075-4701
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: 'Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD for
High-Performance Applications'
type: journal_article
user_id: '49504'
volume: 14
year: '2024'
...
---
_id: '55743'
abstract:
- lang: eng
text: The use of hybrid materials as a combination of fibre-reinforced plastic (FRP)
and metal is of great interest in order to meet the increasing demands for sustainability,
efficiency, and emission reduction based on the principle of lightweight design.
These two components can therefore be joined using the intrinsic joining technique,
which is formed by curing the matrix of the FRP component. In this study, for
the hybrid joint, unidirectionally pre-impregnated semi-finished products (prepregs)
with duromer matrix resin and micro-alloyed HC340LA steel were used. In order
to conduct a detailed investigation, the damage mechanisms of intrinsically produced
fibre metal laminates (FMLs), a new clamping device, and a novel pressing tool
were designed and put into operation. The prepregs were prestressed by applying
a preloading force using a specially designed prestressing frame. Hybrid specimens
were then produced and subjected to nanoindentation and a shear tensile test.
In particular, the effect of the residual stress state by varying the defined
prestressing force on the damage mechanisms was studied. The results showed that
no fracture patterns occurred in the interface of the specimens without preloading
as a result of curing at 120 °C, whereas specimens with preloading failed at the
boundary layer in the tensile range. Nevertheless, all specimens cured at 160
°C failed at the boundary layer in the tensile range. Furthermore, it was proven
that the force and displacement of the preloaded specimens were promisingly higher
than those of the unpreloaded specimens.
article_number: '316'
article_type: original
author:
- first_name: Hayrettin
full_name: Irmak, Hayrettin
id: '75657'
last_name: Irmak
orcid: https://orcid.org/0009-0009-6267-2957
- first_name: Steffen Rainer
full_name: Tinkloh, Steffen Rainer
id: '72722'
last_name: Tinkloh
- first_name: Thorsten
full_name: Marten, Thorsten
id: '338'
last_name: Marten
orcid: 0009-0001-6433-7839
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: Irmak H, Tinkloh SR, Marten T, Tröster T. Development of a Tool Concept for
Prestressed Fibre Metal Laminates and Their Effect on Interface Failure. Journal
of Composites Science. 2024;8(8). doi:10.3390/jcs8080316
apa: Irmak, H., Tinkloh, S. R., Marten, T., & Tröster, T. (2024). Development
of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface
Failure. Journal of Composites Science, 8(8), Article 316. https://doi.org/10.3390/jcs8080316
bibtex: '@article{Irmak_Tinkloh_Marten_Tröster_2024, title={Development of a Tool
Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure},
volume={8}, DOI={10.3390/jcs8080316},
number={8316}, journal={Journal of Composites Science}, publisher={MDPI AG}, author={Irmak,
Hayrettin and Tinkloh, Steffen Rainer and Marten, Thorsten and Tröster, Thomas},
year={2024} }'
chicago: Irmak, Hayrettin, Steffen Rainer Tinkloh, Thorsten Marten, and Thomas Tröster.
“Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their
Effect on Interface Failure.” Journal of Composites Science 8, no. 8 (2024).
https://doi.org/10.3390/jcs8080316.
ieee: 'H. Irmak, S. R. Tinkloh, T. Marten, and T. Tröster, “Development of a Tool
Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure,”
Journal of Composites Science, vol. 8, no. 8, Art. no. 316, 2024, doi:
10.3390/jcs8080316.'
mla: Irmak, Hayrettin, et al. “Development of a Tool Concept for Prestressed Fibre
Metal Laminates and Their Effect on Interface Failure.” Journal of Composites
Science, vol. 8, no. 8, 316, MDPI AG, 2024, doi:10.3390/jcs8080316.
short: H. Irmak, S.R. Tinkloh, T. Marten, T. Tröster, Journal of Composites Science
8 (2024).
date_created: 2024-08-23T06:47:27Z
date_updated: 2026-03-23T10:31:09Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: 10.3390/jcs8080316
intvolume: ' 8'
issue: '8'
keyword:
- CFRP
- prestressing
- fibre metal laminate
- interface
- prepreg
- shear tensile test
language:
- iso: eng
publication: Journal of Composites Science
publication_identifier:
issn:
- 2504-477X
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their
Effect on Interface Failure
type: journal_article
user_id: '338'
volume: 8
year: '2024'
...
---
_id: '45782'
abstract:
- lang: eng
text: The development of automotive components with reduced greenhouse gas
(GHG) emissions is needed to reduce overall vehicle emissions. Life Cycle Engineering
(LCE) based on Life Cycle Assessment (LCA) supports this by providing holistic
information and improvement potentials regarding eco-efficient products. Key factors
influencing LCAs of automotive components, such as material production, will change
in the future. First approaches for integrating future scenarios for these key
factors into LCE already exist, but they only consider a limited number of parameters
and scenarios. This work aims to develop a method that can be practically applied
in the industry for integrating prospective LCAs (pLCA) into the LCE of automotive
components, considering relevant parameters and consistent scenarios. Therefore,
pLCA methods are further developed to investigate the influence of future scenarios
on the GHG emissions of automotive components. The practical application is demonstrated
for a vehicle component with different design options. This paper shows that different
development paths of the foreground and background system can shift the ecological
optimum of design alternatives. Therefore, future pathways of relevant parameters
must be considered comprehensively to reduce GHG emissions of future vehicles.
This work contributes to the methodological and practical integration of pLCA
into automotive development processes and provides quantitative results.
article_number: '10041'
author:
- first_name: Julian
full_name: Grenz, Julian
last_name: Grenz
- first_name: Moritz
full_name: Ostermann, Moritz
id: '44763'
last_name: Ostermann
orcid: https://orcid.org/0000-0003-1146-0443
- first_name: Karoline
full_name: Käsewieter, Karoline
last_name: Käsewieter
- first_name: Felipe
full_name: Cerdas, Felipe
last_name: Cerdas
- first_name: Thorsten
full_name: Marten, Thorsten
id: '338'
last_name: Marten
- first_name: Christoph
full_name: Herrmann, Christoph
last_name: Herrmann
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: Grenz J, Ostermann M, Käsewieter K, et al. Integrating Prospective LCA in the
Development of Automotive Components. Sustainability. 2023;15(13). doi:10.3390/su151310041
apa: Grenz, J., Ostermann, M., Käsewieter, K., Cerdas, F., Marten, T., Herrmann,
C., & Tröster, T. (2023). Integrating Prospective LCA in the Development of
Automotive Components. Sustainability, 15(13), Article 10041. https://doi.org/10.3390/su151310041
bibtex: '@article{Grenz_Ostermann_Käsewieter_Cerdas_Marten_Herrmann_Tröster_2023,
title={Integrating Prospective LCA in the Development of Automotive Components},
volume={15}, DOI={10.3390/su151310041},
number={1310041}, journal={Sustainability}, publisher={MDPI AG}, author={Grenz,
Julian and Ostermann, Moritz and Käsewieter, Karoline and Cerdas, Felipe and Marten,
Thorsten and Herrmann, Christoph and Tröster, Thomas}, year={2023} }'
chicago: Grenz, Julian, Moritz Ostermann, Karoline Käsewieter, Felipe Cerdas, Thorsten
Marten, Christoph Herrmann, and Thomas Tröster. “Integrating Prospective LCA in
the Development of Automotive Components.” Sustainability 15, no. 13 (2023).
https://doi.org/10.3390/su151310041.
ieee: 'J. Grenz et al., “Integrating Prospective LCA in the Development of
Automotive Components,” Sustainability, vol. 15, no. 13, Art. no. 10041,
2023, doi: 10.3390/su151310041.'
mla: Grenz, Julian, et al. “Integrating Prospective LCA in the Development of Automotive
Components.” Sustainability, vol. 15, no. 13, 10041, MDPI AG, 2023, doi:10.3390/su151310041.
short: J. Grenz, M. Ostermann, K. Käsewieter, F. Cerdas, T. Marten, C. Herrmann,
T. Tröster, Sustainability 15 (2023).
date_created: 2023-06-27T06:35:20Z
date_updated: 2023-06-27T06:39:47Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: 10.3390/su151310041
intvolume: ' 15'
issue: '13'
keyword:
- prospective LCA
- life cycle engineering (LCE)
- lightweight design
- automotive components
- body parts
- circular economy
- steel
- aluminum
- hybrid materials
- fiber metal laminates
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.mdpi.com/2071-1050/15/13/10041
oa: '1'
publication: Sustainability
publication_identifier:
issn:
- 2071-1050
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
related_material:
link:
- relation: supplementary_material
url: ' https://www.mdpi.com/article/10.3390/su151310041/s1'
status: public
title: Integrating Prospective LCA in the Development of Automotive Components
type: journal_article
user_id: '44763'
volume: 15
year: '2023'
...
---
_id: '60302'
abstract:
- lang: eng
text: The combination of the mechanical properties of a clinched joint and of the
material surrounding the joint determine the resulting properties of the component
and joint. The cause and effect relationships between the joint and the joint
environment offers the possibility of a specific modification through an adaptation
in the design process. In order to identify these cause and effect relationships
and resulting interactions experimentally, numerous of experiments are required.
In this publication, a concept for the automated manufacturing of head tensile
test and shear tensile test specimens – from cutting to clinching – by using a
punch laser machine is presented. Based on a full-factorial experimental design,
the parameters change of the properties of the joint environment by beading and
change of the punch displacement are addressed. The influence on the properties
of the clinched specimen is evaluated based on the variables Stiffness, force
at the beginning of yielding and maximum force at head tensile loading and shear
tensile loading. In addition, the geometric quality parameters of neck thickness,
interlock and bottom thickness are evaluated. The relationships can be used to
apply uniform loads to joints in joined structures to counteract oversizing.
author:
- first_name: Christian
full_name: Steinfelder, Christian
last_name: Steinfelder
- first_name: Alexander
full_name: Brosius, Alexander
last_name: Brosius
citation:
ama: 'Steinfelder C, Brosius A. Experimental investigation of the cause and effect
relationships between the joint and the component during clinching. In: Materials
Research Proceedings. Vol 25. Materials Research Forum LLC; 2023. doi:10.21741/9781644902417-19'
apa: Steinfelder, C., & Brosius, A. (2023). Experimental investigation of the
cause and effect relationships between the joint and the component during clinching.
Materials Research Proceedings, 25. https://doi.org/10.21741/9781644902417-19
bibtex: '@inproceedings{Steinfelder_Brosius_2023, title={Experimental investigation
of the cause and effect relationships between the joint and the component during
clinching}, volume={25}, DOI={10.21741/9781644902417-19},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Steinfelder, Christian and Brosius, Alexander}, year={2023} }'
chicago: Steinfelder, Christian, and Alexander Brosius. “Experimental Investigation
of the Cause and Effect Relationships between the Joint and the Component during
Clinching.” In Materials Research Proceedings, Vol. 25. Materials Research
Forum LLC, 2023. https://doi.org/10.21741/9781644902417-19.
ieee: 'C. Steinfelder and A. Brosius, “Experimental investigation of the cause and
effect relationships between the joint and the component during clinching,” in
Materials Research Proceedings, Erlangen-Nürnberg, 2023, vol. 25, doi:
10.21741/9781644902417-19.'
mla: Steinfelder, Christian, and Alexander Brosius. “Experimental Investigation
of the Cause and Effect Relationships between the Joint and the Component during
Clinching.” Materials Research Proceedings, vol. 25, Materials Research
Forum LLC, 2023, doi:10.21741/9781644902417-19.
short: 'C. Steinfelder, A. Brosius, in: Materials Research Proceedings, Materials
Research Forum LLC, 2023.'
conference:
end_date: 2023-04-05
location: Erlangen-Nürnberg
name: 20th International Conference on Sheet Metal
start_date: 2023-04-02
date_created: 2025-06-23T08:00:55Z
date_updated: 2025-06-23T08:07:52Z
department:
- _id: '630'
doi: 10.21741/9781644902417-19
intvolume: ' 25'
keyword:
- Sheet Metal
- Joining
- Stiffness
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '140'
name: 'TRR 285 – B01: TRR 285 - Subproject B01'
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
status: public
title: Experimental investigation of the cause and effect relationships between the
joint and the component during clinching
type: conference
user_id: '104464'
volume: 25
year: '2023'
...
---
_id: '27652'
abstract:
- lang: ger
text: "Aufgrund der Fortschritte der Digitalisierung finden Systeme zur Zustandsüberwachung
vermehrt Einsatz in der Industrie, um durch eine zustandsbasierte oder eine prädiktive
Instandhaltung Vorteile, wie eine verbesserte Zuverlässigkeit und geringere Kosten
zu erzielen. Dabei beruhen Zustandsüberwachungssysteme auf den folgenden Bausteinen:
Sensorik, Datenvorverarbeitung, Merkmalsextraktion und -auswahl, Diagnose bzw.
Prognose sowie einer Entscheidungsfindung basierend auf den Ergebnissen. Jeder
dieser Bausteine erfordert individuelle Einstellungen, um ein geeignetes Zustandsüberwachungssystem
für die jeweilige Anwendung zu entwickeln. Eine offene Fragestellung im Bereich
der Zustandsüberwachung ergibt sich aufgrund der Unsicherheit der Zukunft, die
sich in den zukünftigen Betriebs- und Umgebungsbedingungen zeigt. Diese Unsicherheit
gilt es in allen Bausteinen zu berücksichtigen.\r\nDieser Beitrag konzentriert
sich auf den Baustein Merkmalsextraktion und -selektion, mit dem Ziel anhand geeigneter
Merkmale eine Prognose der nutzbaren Restlebensdauer mit hoher Genauigkeit realisieren
zu können. Daher werden geeignete Merkmale aus dem Zeitbereich und daraus abgeleitete
Zustandsindikatoren für die Restlebensdauerprognose von technischen Systemen vorgestellt.
Dabei sind Zustandsindikatoren Kenngrößen zur Beobachtung des Zustands der kritischen
Systemkomponenten. Anhand dreier Anwendungsbeispiele wird ihre Eignung evaluiert.
Dabei werden Daten aus Lebensdauerversuchen unter instationären Betriebs- und
Umgebungsbedingungen ausgewertet. Die auftretenden Unsicherheiten der Zukunft
werden somit berücksichtigt. Die Beispielsysteme beruhen auf Gummi-Metall-Elementen
und Wälzlagern. Aus den generierten Ergebnissen lässt sich schließen, dass die
Zustandsindikatoren aus der betrachteten Zeitreihen-Toolbox auch unter unbekannten
Betriebs- und Umgebungsbedingungen robust sind.\r\n"
- lang: eng
text: "Due to the advances in digitalization, condition monitoring systems have
found numerous applications in the industry due to benefits such as improved reliability
and lowered costs through condition-based or predictive maintenance. Condition
monitoring systems typically involve elements, such as data acquisition via suitable
sensors, data preprocessing, feature extraction and selection, diagnostics, prognostics
and (maintenance) decisions based on diagnosis or prognosis. For the application-specific
development of a suitable condition monitoring system, each of these elements
requires individual settings. Due to the uncertainty of the future, an open question
arises in the condition monitoring field, which is reflected in unknown future
operating and environmental conditions. This uncertainty needs consideration in
all elements of a condition monitoring system.\r\nThis article focuses on feature
extraction and selection, building on the hypothesis that the remaining useful
life of a technical system can be predicted with high accuracy utilizing suitable
features. In this article, health indicators derived from time-domain features
that permit the monitoring of the health of critical system components are presented
for predicting the remaining useful life of technical systems. Three distinct
application examples based on rubber-metal elements and rolling-element bearings
are evaluated to validate the suitability of the presented methods. Experimental
data from accelerated lifetime tests conducted under non-stationary operating
and environmental conditions are considered to take possible future uncertainties
into account. It can be concluded from the acquired results that health indicators
derived from the presented time series toolbox are robust to varying operating
and environmental conditions.\r\n"
author:
- first_name: Osarenren Kennedy
full_name: Aimiyekagbon, Osarenren Kennedy
id: '9557'
last_name: Aimiyekagbon
- first_name: Amelie
full_name: Bender, Amelie
id: '54290'
last_name: Bender
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Aimiyekagbon OK, Bender A, Sextro W. Extraktion und Selektion geeigneter Merkmale
für die Restlebensdauerprognose von technischen Systemen trotz aleatorischen Unsicherheiten
. In: VDI-Berichte 2391. VDI Verlag GmbH; 2021:197-210.'
apa: Aimiyekagbon, O. K., Bender, A., & Sextro, W. (2021). Extraktion und Selektion
geeigneter Merkmale für die Restlebensdauerprognose von technischen Systemen trotz
aleatorischen Unsicherheiten . VDI-Berichte 2391, 197–210.
bibtex: '@inproceedings{Aimiyekagbon_Bender_Sextro_2021, place={Düsseldorf}, title={Extraktion
und Selektion geeigneter Merkmale für die Restlebensdauerprognose von technischen
Systemen trotz aleatorischen Unsicherheiten }, booktitle={VDI-Berichte 2391},
publisher={VDI Verlag GmbH}, author={Aimiyekagbon, Osarenren Kennedy and Bender,
Amelie and Sextro, Walter}, year={2021}, pages={197–210} }'
chicago: 'Aimiyekagbon, Osarenren Kennedy, Amelie Bender, and Walter Sextro. “Extraktion
und Selektion geeigneter Merkmale für die Restlebensdauerprognose von technischen
Systemen trotz aleatorischen Unsicherheiten .” In VDI-Berichte 2391, 197–210.
Düsseldorf: VDI Verlag GmbH, 2021.'
ieee: O. K. Aimiyekagbon, A. Bender, and W. Sextro, “Extraktion und Selektion geeigneter
Merkmale für die Restlebensdauerprognose von technischen Systemen trotz aleatorischen
Unsicherheiten ,” in VDI-Berichte 2391, Würzburg, 2021, pp. 197–210.
mla: Aimiyekagbon, Osarenren Kennedy, et al. “Extraktion und Selektion geeigneter
Merkmale für die Restlebensdauerprognose von technischen Systemen trotz aleatorischen
Unsicherheiten .” VDI-Berichte 2391, VDI Verlag GmbH, 2021, pp. 197–210.
short: 'O.K. Aimiyekagbon, A. Bender, W. Sextro, in: VDI-Berichte 2391, VDI Verlag
GmbH, Düsseldorf, 2021, pp. 197–210.'
conference:
end_date: 2021-11-17
location: Würzburg
name: '3. VDI-Fachtagung '
start_date: 2021-11-16
date_created: 2021-11-22T07:42:44Z
date_updated: 2022-01-06T06:57:43Z
department:
- _id: '151'
keyword:
- run-to-failure
- rubber-metal element
- bearing prognostics
- non-stationary operating conditions
- varying operating conditions
- feature extraction
- feature selection
language:
- iso: ger
page: 197 - 210
place: Düsseldorf
publication: VDI-Berichte 2391
publication_identifier:
isbn:
- 978-3-18-092391-8
issn:
- '0083-5560 '
publication_status: published
publisher: VDI Verlag GmbH
status: public
title: 'Extraktion und Selektion geeigneter Merkmale für die Restlebensdauerprognose
von technischen Systemen trotz aleatorischen Unsicherheiten '
type: conference
user_id: '9557'
year: '2021'
...
---
_id: '25046'
abstract:
- lang: eng
text: While increasing digitalization enables multiple advantages for a
reliable operation of technical systems, a remaining challenge in the context
of condition monitoring is seen in suitable consideration of uncertainties affecting
the monitored system. Therefore, a suitable prognostic approach to predict the
remaining useful lifetime of complex technical systems is required. To handle
different kinds of uncertainties, a novel Multi-Model-Particle Filtering-based
prognostic approach is developed and evaluated by the use case of rubber-metal-elements.
These elements are maintained preventively due to the strong influence of uncertainties
on their behavior. In this paper, two measurement quantities are compared concerning
their ability to establish a prediction of the remaining useful lifetime of the
monitored elements and the influence of present uncertainties. Based on three
performance indices, the results are evaluated. A comparison with predictions
of a classical Particle Filter underlines the superiority of the developed Multi-Model-Particle
Filter. Finally, the value of the developed method for enabling condition monitoring
of technical systems related to uncertainties is given exemplary by a comparison
between the preventive and the predictive maintenance strategy for the use case.
article_number: '210'
article_type: original
author:
- first_name: Amelie
full_name: Bender, Amelie
id: '54290'
last_name: Bender
citation:
ama: Bender A. A Multi-Model-Particle Filtering-Based Prognostic Approach to Consider
Uncertainties in RUL Predictions. Machines. 2021;9(10). doi:10.3390/machines9100210
apa: Bender, A. (2021). A Multi-Model-Particle Filtering-Based Prognostic Approach
to Consider Uncertainties in RUL Predictions. Machines, 9(10), Article
210. https://doi.org/10.3390/machines9100210
bibtex: '@article{Bender_2021, title={A Multi-Model-Particle Filtering-Based Prognostic
Approach to Consider Uncertainties in RUL Predictions}, volume={9}, DOI={10.3390/machines9100210},
number={10210}, journal={Machines}, author={Bender, Amelie}, year={2021} }'
chicago: Bender, Amelie. “A Multi-Model-Particle Filtering-Based Prognostic Approach
to Consider Uncertainties in RUL Predictions.” Machines 9, no. 10 (2021).
https://doi.org/10.3390/machines9100210.
ieee: 'A. Bender, “A Multi-Model-Particle Filtering-Based Prognostic Approach to
Consider Uncertainties in RUL Predictions,” Machines, vol. 9, no. 10, Art.
no. 210, 2021, doi: 10.3390/machines9100210.'
mla: Bender, Amelie. “A Multi-Model-Particle Filtering-Based Prognostic Approach
to Consider Uncertainties in RUL Predictions.” Machines, vol. 9, no. 10,
210, 2021, doi:10.3390/machines9100210.
short: A. Bender, Machines 9 (2021).
date_created: 2021-09-27T07:07:58Z
date_updated: 2022-11-03T11:42:46Z
department:
- _id: '151'
doi: 10.3390/machines9100210
intvolume: ' 9'
issue: '10'
keyword:
- prognostics
- RUL predictions
- particle filter
- uncertainty consideration
- Multi-Model-Particle Filter
- model-based approach
- rubber-metal-elements
- predictive maintenance
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.mdpi.com/2075-1702/9/10/210
oa: '1'
publication: Machines
publication_identifier:
issn:
- 2075-1702
publication_status: published
quality_controlled: '1'
status: public
title: A Multi-Model-Particle Filtering-Based Prognostic Approach to Consider Uncertainties
in RUL Predictions
type: journal_article
user_id: '54290'
volume: 9
year: '2021'
...
---
_id: '21811'
abstract:
- lang: eng
text: 'In order to reduce the fuel consumption and consequently the greenhouse emissions,
the automotive industry is implementing lightweight constructions in the body
in white production. As a result, the use of aluminum alloys is continuously increasing.
Due to poor weldability of aluminum in combination with other materials, mechanical
joining technologies like clinching are increasingly used. In order to predict
relevant characteristics of clinched joints and to ensure the reliability of the
process, it is simulated numerically during product development processes. In
this regard the predictive accuracy of the simulated process highly depends on
the implemented friction model. In particular, the frictional behavior between
the sheet metals affects the geometrical formation of the clinched joint significantly.
This paper presents a testing method, which enables to determine the frictional
coefficients between sheet metal materials for the simulation of clinching processes.
For this purpose, the correlation of interface pressure and the relative velocity
between aluminum sheets in clinching processes is investigated using numerical
simulation. Furthermore, the developed testing method focuses on the specimen
geometry as well as the reproduction of the occurring friction conditions between
two sheet metal materials in clinching processes. Based on a methodical approach
the test setup is explained and the functionality of the method is proven by experimental
tests using sheet metal material EN AW6014. '
author:
- first_name: Moritz Sebastian
full_name: Rossel, Moritz Sebastian
id: '44503'
last_name: Rossel
- first_name: Max
full_name: Böhnke, Max
id: '45779'
last_name: Böhnke
- first_name: Christian Roman
full_name: Bielak, Christian Roman
id: '34782'
last_name: Bielak
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: 'Rossel MS, Böhnke M, Bielak CR, Bobbert M, Meschut G. Development of a Method
for the Identification of Friction Coefficients in Sheet Metal Materials for the
Numerical Simulation of Clinching Processes. In: Sheet Metal 2021. Vol
883. Key Engineering Materials. Trans Tech Publications Ltd; 2021:81-88. doi:10.4028/www.scientific.net/KEM.883.81'
apa: Rossel, M. S., Böhnke, M., Bielak, C. R., Bobbert, M., & Meschut, G. (2021).
Development of a Method for the Identification of Friction Coefficients in Sheet
Metal Materials for the Numerical Simulation of Clinching Processes. Sheet
Metal 2021, 883, 81–88. https://doi.org/10.4028/www.scientific.net/KEM.883.81
bibtex: '@inproceedings{Rossel_Böhnke_Bielak_Bobbert_Meschut_2021, series={Key Engineering
Materials}, title={Development of a Method for the Identification of Friction
Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching
Processes}, volume={883}, DOI={10.4028/www.scientific.net/KEM.883.81},
booktitle={Sheet Metal 2021}, publisher={Trans Tech Publications Ltd}, author={Rossel,
Moritz Sebastian and Böhnke, Max and Bielak, Christian Roman and Bobbert, Mathias
and Meschut, Gerson}, year={2021}, pages={81–88}, collection={Key Engineering
Materials} }'
chicago: Rossel, Moritz Sebastian, Max Böhnke, Christian Roman Bielak, Mathias Bobbert,
and Gerson Meschut. “Development of a Method for the Identification of Friction
Coefficients in Sheet Metal Materials for the Numerical Simulation of Clinching
Processes.” In Sheet Metal 2021, 883:81–88. Key Engineering Materials.
Trans Tech Publications Ltd, 2021. https://doi.org/10.4028/www.scientific.net/KEM.883.81.
ieee: 'M. S. Rossel, M. Böhnke, C. R. Bielak, M. Bobbert, and G. Meschut, “Development
of a Method for the Identification of Friction Coefficients in Sheet Metal Materials
for the Numerical Simulation of Clinching Processes,” in Sheet Metal 2021,
2021, vol. 883, pp. 81–88, doi: 10.4028/www.scientific.net/KEM.883.81.'
mla: Rossel, Moritz Sebastian, et al. “Development of a Method for the Identification
of Friction Coefficients in Sheet Metal Materials for the Numerical Simulation
of Clinching Processes.” Sheet Metal 2021, vol. 883, Trans Tech Publications
Ltd, 2021, pp. 81–88, doi:10.4028/www.scientific.net/KEM.883.81.
short: 'M.S. Rossel, M. Böhnke, C.R. Bielak, M. Bobbert, G. Meschut, in: Sheet Metal
2021, Trans Tech Publications Ltd, 2021, pp. 81–88.'
date_created: 2021-04-28T06:12:54Z
date_updated: 2024-03-11T08:15:08Z
department:
- _id: '157'
doi: 10.4028/www.scientific.net/KEM.883.81
intvolume: ' 883'
keyword:
- Tribology
- Sheet Metal
- Simulation
language:
- iso: eng
page: 81-88
publication: Sheet Metal 2021
publication_status: published
publisher: Trans Tech Publications Ltd
quality_controlled: '1'
series_title: Key Engineering Materials
status: public
title: Development of a Method for the Identification of Friction Coefficients in
Sheet Metal Materials for the Numerical Simulation of Clinching Processes
type: conference
user_id: '45779'
volume: 883
year: '2021'
...
---
_id: '64019'
abstract:
- lang: eng
text: A chiral zirconium-based catalyst, DUT-67-Pro containing 8-connected Zr6-clusters
is obtained by post synthetic functionalization of Zr6O6(OH)2(TDC)4(HCOO)2 (DUT-67,
TDC = 2,5-thiophenedicarboxylate) with the chiral monocarboxylic acid, L-proline.
13C and 15N solid state MAS and DNP NMR studies of DUT-67-Pro confirm the integration
of L-proline into the porous framework. The chiral MOF catalyst exhibits an excellent
catalytic activity at low temperature (298 K) with an unprecedented syn-(S,S)-product
selectivity in an asymmetric aldol addition reaction of cyclohexanone to 4-nitrobenzaldehyde
(yield = 95%, ee = 96%). Comparative catalytic studies using a molecular Zr6-cluster
model compound indicate the Zr6-moiety to be responsible for this inverse diastereoselectivity
compared to well-established L-proline organocatalysis and a mechanism is proposed
to explain the Zr6-cluster-mediated syn-selectivity. Masking residual acidic active
sites in the cluster of the framework was found to be a key prerequisite to achieve
the high enantioselectivity. The purely heterogeneous catalytic system based on
DUT-67-Pro is highly stable and can be recycled several times.
author:
- first_name: Khoa D.
full_name: Nguyen, Khoa D.
last_name: Nguyen
- first_name: Christel
full_name: Kutzscher, Christel
last_name: Kutzscher
- first_name: Sebastian
full_name: Ehrling, Sebastian
last_name: Ehrling
- first_name: Irena
full_name: Senkovska, Irena
last_name: Senkovska
- first_name: Volodymyr
full_name: Bon, Volodymyr
last_name: Bon
- first_name: Marcos
full_name: Oliveira, Marcos
last_name: Oliveira
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: Gerd
full_name: Buntkowsky, Gerd
last_name: Buntkowsky
- first_name: Stefan
full_name: Kaskel, Stefan
last_name: Kaskel
citation:
ama: Nguyen KD, Kutzscher C, Ehrling S, et al. Insights into the role of zirconium
in proline functionalized metal-organic frameworks attaining high enantio- and
diastereoselectivity. Journal of Catalysis. 2019;377:41–50. doi:10.1016/j.jcat.2019.07.003
apa: Nguyen, K. D., Kutzscher, C., Ehrling, S., Senkovska, I., Bon, V., Oliveira,
M., Gutmann, T., Buntkowsky, G., & Kaskel, S. (2019). Insights into the role
of zirconium in proline functionalized metal-organic frameworks attaining high
enantio- and diastereoselectivity. Journal of Catalysis, 377, 41–50.
https://doi.org/10.1016/j.jcat.2019.07.003
bibtex: '@article{Nguyen_Kutzscher_Ehrling_Senkovska_Bon_Oliveira_Gutmann_Buntkowsky_Kaskel_2019,
title={Insights into the role of zirconium in proline functionalized metal-organic
frameworks attaining high enantio- and diastereoselectivity}, volume={377}, DOI={10.1016/j.jcat.2019.07.003},
journal={Journal of Catalysis}, author={Nguyen, Khoa D. and Kutzscher, Christel
and Ehrling, Sebastian and Senkovska, Irena and Bon, Volodymyr and Oliveira, Marcos
and Gutmann, Torsten and Buntkowsky, Gerd and Kaskel, Stefan}, year={2019}, pages={41–50}
}'
chicago: 'Nguyen, Khoa D., Christel Kutzscher, Sebastian Ehrling, Irena Senkovska,
Volodymyr Bon, Marcos Oliveira, Torsten Gutmann, Gerd Buntkowsky, and Stefan Kaskel.
“Insights into the Role of Zirconium in Proline Functionalized Metal-Organic Frameworks
Attaining High Enantio- and Diastereoselectivity.” Journal of Catalysis
377 (2019): 41–50. https://doi.org/10.1016/j.jcat.2019.07.003.'
ieee: 'K. D. Nguyen et al., “Insights into the role of zirconium in proline
functionalized metal-organic frameworks attaining high enantio- and diastereoselectivity,”
Journal of Catalysis, vol. 377, pp. 41–50, 2019, doi: 10.1016/j.jcat.2019.07.003.'
mla: Nguyen, Khoa D., et al. “Insights into the Role of Zirconium in Proline Functionalized
Metal-Organic Frameworks Attaining High Enantio- and Diastereoselectivity.” Journal
of Catalysis, vol. 377, 2019, pp. 41–50, doi:10.1016/j.jcat.2019.07.003.
short: K.D. Nguyen, C. Kutzscher, S. Ehrling, I. Senkovska, V. Bon, M. Oliveira,
T. Gutmann, G. Buntkowsky, S. Kaskel, Journal of Catalysis 377 (2019) 41–50.
date_created: 2026-02-07T16:02:33Z
date_updated: 2026-02-17T16:14:42Z
doi: 10.1016/j.jcat.2019.07.003
extern: '1'
intvolume: ' 377'
keyword:
- -proline
- -selective aldol reaction
- Chirality
- Metal-organic framework
- Zirconium
language:
- iso: eng
page: 41–50
publication: Journal of Catalysis
status: public
title: Insights into the role of zirconium in proline functionalized metal-organic
frameworks attaining high enantio- and diastereoselectivity
type: journal_article
user_id: '100715'
volume: 377
year: '2019'
...
---
_id: '63991'
abstract:
- lang: eng
text: A series of 1 and 2 nm sized platinum nanoparticles (Pt-NPs) deposited on
different support materials, namely, gamma-alumina (gamma-Al2O3), titanium dioxide
(TiO2), silicon dioxide (SiO2) and fumed silica are investigated by solid-state
NMR and dynamic nuclear polarization enhanced NMR spectroscopy (DNP). DNP signal
enhancement factors up to 170 enable gaining deeper insight into the surface chemistry
of Pt-NPs. Carbon monoxide is used as a probe molecule to analyze the adsorption
process and the surface chemistry on the supported Pt-NPs. The studied systems
show significant catalytic activity in carbon monoxide oxidation on their surface
at room temperature. The underlying catalytic mechanism is the water-gas shift
reaction. In the case of alumina as the support the produced CO2 reacts with the
surface to form carbonate, which is revealed by solid-state NMR. A similar carbonate
formation is also observed when physical mixtures of neat alumina with silica,
fumed silica and titania supported Pt-NPs are studied.
author:
- first_name: V.
full_name: Klimavicius, V.
last_name: Klimavicius
- first_name: S.
full_name: Neumann, S.
last_name: Neumann
- first_name: S.
full_name: Kunz, S.
last_name: Kunz
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: G.
full_name: Buntkowsky, G.
last_name: Buntkowsky
citation:
ama: Klimavicius V, Neumann S, Kunz S, Gutmann T, Buntkowsky G. Room temperature
CO oxidation catalysed by supported Pt nanoparticles revealed by solid-state NMR
and DNP spectroscopy. Catalysis Science & Technology. 2019;9(14):3743–3752.
doi:10.1039/c9cy00684b
apa: Klimavicius, V., Neumann, S., Kunz, S., Gutmann, T., & Buntkowsky, G. (2019).
Room temperature CO oxidation catalysed by supported Pt nanoparticles revealed
by solid-state NMR and DNP spectroscopy. Catalysis Science & Technology,
9(14), 3743–3752. https://doi.org/10.1039/c9cy00684b
bibtex: '@article{Klimavicius_Neumann_Kunz_Gutmann_Buntkowsky_2019, title={Room
temperature CO oxidation catalysed by supported Pt nanoparticles revealed by solid-state
NMR and DNP spectroscopy}, volume={9}, DOI={10.1039/c9cy00684b},
number={14}, journal={Catalysis Science & Technology}, author={Klimavicius,
V. and Neumann, S. and Kunz, S. and Gutmann, Torsten and Buntkowsky, G.}, year={2019},
pages={3743–3752} }'
chicago: 'Klimavicius, V., S. Neumann, S. Kunz, Torsten Gutmann, and G. Buntkowsky.
“Room Temperature CO Oxidation Catalysed by Supported Pt Nanoparticles Revealed
by Solid-State NMR and DNP Spectroscopy.” Catalysis Science & Technology
9, no. 14 (2019): 3743–3752. https://doi.org/10.1039/c9cy00684b.'
ieee: 'V. Klimavicius, S. Neumann, S. Kunz, T. Gutmann, and G. Buntkowsky, “Room
temperature CO oxidation catalysed by supported Pt nanoparticles revealed by solid-state
NMR and DNP spectroscopy,” Catalysis Science & Technology, vol. 9,
no. 14, pp. 3743–3752, 2019, doi: 10.1039/c9cy00684b.'
mla: Klimavicius, V., et al. “Room Temperature CO Oxidation Catalysed by Supported
Pt Nanoparticles Revealed by Solid-State NMR and DNP Spectroscopy.” Catalysis
Science & Technology, vol. 9, no. 14, 2019, pp. 3743–3752, doi:10.1039/c9cy00684b.
short: V. Klimavicius, S. Neumann, S. Kunz, T. Gutmann, G. Buntkowsky, Catalysis
Science & Technology 9 (2019) 3743–3752.
date_created: 2026-02-07T15:47:21Z
date_updated: 2026-02-17T16:16:33Z
doi: 10.1039/c9cy00684b
extern: '1'
intvolume: ' 9'
issue: '14'
keyword:
- Chemistry
- gamma-alumina
- hydrogenation
- silica
- c-13
- interactions
- metal-catalysts
- particle-size
- platinum nanoparticles
- sites
- surface
- water-gas shift
language:
- iso: eng
page: 3743–3752
publication: Catalysis Science & Technology
publication_identifier:
issn:
- 2044-4753
status: public
title: Room temperature CO oxidation catalysed by supported Pt nanoparticles revealed
by solid-state NMR and DNP spectroscopy
type: journal_article
user_id: '100715'
volume: 9
year: '2019'
...
---
_id: '64010'
abstract:
- lang: eng
text: Seven novel dirhodium coordination polymers (Rh-2-Ln) (n = 1-7) are prepared
by employing bitopic ligands to connect dirhodium nodes. The formation of the
framework is confirmed by attenuated total reflectance Fourier transform infrared
(ATR-FTIR) and H-1 C-13 cross polarization magic angle spinning nuclear magnetic
resonance (CP MAS NMR) spectroscopy. Defect sites resulting from incomplete ligand
substitution are revealed by F-19 MAS NMR. The random stacking behavior of the
frameworks in the obtained solid is analyzed by scanning electron microscopy (SEM)
and X-ray diffraction (XRD). The Rh-2/O interaction in neighboring layers is investigated
by diffuse reflectance ultra-violet visible light (DR-UV-vis) spectroscopy and
X-ray photoelectron spectroscopy (XPS). This interaction is relevant to understand
the catalytic behavior of various Rh-2-Ln catalysts in the cyclopropanation of
styrene with ethyl diazoacetate (EDA). In this context, the structure-reactivity
relationship is discussed by taking into consideration both interlayer Rh-2/O
interactions and steric effects of side chains.
author:
- first_name: J. Q.
full_name: Liu, J. Q.
last_name: Liu
- first_name: Y. P.
full_name: Xu, Y. P.
last_name: Xu
- first_name: P. B.
full_name: Groszewicz, P. B.
last_name: Groszewicz
- first_name: M.
full_name: Brodrecht, M.
last_name: Brodrecht
- first_name: C.
full_name: Fasel, C.
last_name: Fasel
- first_name: K.
full_name: Hofmann, K.
last_name: Hofmann
- first_name: X. J.
full_name: Tan, X. J.
last_name: Tan
- first_name: Torsten
full_name: Gutmann, Torsten
id: '118165'
last_name: Gutmann
- first_name: G.
full_name: Buntkowsky, G.
last_name: Buntkowsky
citation:
ama: 'Liu JQ, Xu YP, Groszewicz PB, et al. Novel dirhodium coordination polymers:
the impact of side chains on cyclopropanation. Catalysis Science & Technology.
2018;8(20):5190–5200. doi:10.1039/c8cy01493k'
apa: 'Liu, J. Q., Xu, Y. P., Groszewicz, P. B., Brodrecht, M., Fasel, C., Hofmann,
K., Tan, X. J., Gutmann, T., & Buntkowsky, G. (2018). Novel dirhodium coordination
polymers: the impact of side chains on cyclopropanation. Catalysis Science
& Technology, 8(20), 5190–5200. https://doi.org/10.1039/c8cy01493k'
bibtex: '@article{Liu_Xu_Groszewicz_Brodrecht_Fasel_Hofmann_Tan_Gutmann_Buntkowsky_2018,
title={Novel dirhodium coordination polymers: the impact of side chains on cyclopropanation},
volume={8}, DOI={10.1039/c8cy01493k},
number={20}, journal={Catalysis Science & Technology}, author={Liu, J. Q.
and Xu, Y. P. and Groszewicz, P. B. and Brodrecht, M. and Fasel, C. and Hofmann,
K. and Tan, X. J. and Gutmann, Torsten and Buntkowsky, G.}, year={2018}, pages={5190–5200}
}'
chicago: 'Liu, J. Q., Y. P. Xu, P. B. Groszewicz, M. Brodrecht, C. Fasel, K. Hofmann,
X. J. Tan, Torsten Gutmann, and G. Buntkowsky. “Novel Dirhodium Coordination Polymers:
The Impact of Side Chains on Cyclopropanation.” Catalysis Science & Technology
8, no. 20 (2018): 5190–5200. https://doi.org/10.1039/c8cy01493k.'
ieee: 'J. Q. Liu et al., “Novel dirhodium coordination polymers: the impact
of side chains on cyclopropanation,” Catalysis Science & Technology,
vol. 8, no. 20, pp. 5190–5200, 2018, doi: 10.1039/c8cy01493k.'
mla: 'Liu, J. Q., et al. “Novel Dirhodium Coordination Polymers: The Impact of Side
Chains on Cyclopropanation.” Catalysis Science & Technology, vol. 8,
no. 20, 2018, pp. 5190–5200, doi:10.1039/c8cy01493k.'
short: J.Q. Liu, Y.P. Xu, P.B. Groszewicz, M. Brodrecht, C. Fasel, K. Hofmann, X.J.
Tan, T. Gutmann, G. Buntkowsky, Catalysis Science & Technology 8 (2018) 5190–5200.
date_created: 2026-02-07T15:57:34Z
date_updated: 2026-02-17T16:15:22Z
doi: 10.1039/c8cy01493k
extern: '1'
intvolume: ' 8'
issue: '20'
keyword:
- Chemistry
- asymmetric cyclopropanation
- c-h insertion
- carbene transformations
- carboxylates
- catalysts
- functionalization
- immobilization
- metal-organic frameworks
- nmr
- solid support
language:
- iso: eng
page: 5190–5200
publication: Catalysis Science & Technology
publication_identifier:
issn:
- 2044-4753
status: public
title: 'Novel dirhodium coordination polymers: the impact of side chains on cyclopropanation'
type: journal_article
user_id: '100715'
volume: 8
year: '2018'
...
---
_id: '62809'
abstract:
- lang: eng
text: Superhierarchically rough films are rapidly synthesised on metal substrates
via electrochemically triggered self-assembly of meso/macroporous-structured metal-organic
framework (MOF) crystals. These coatings are applied to immobilise a functional
oil with low surface energy to provide stable coatings repellent to a wide range
of hydrophobic as well as hydrophilic fluids. Such omniphobic surfaces are highly
interesting for several applications such as anti-fouling, anti-icing, and dropwise
condensation, and become easily scalable with the presented bottom-up fabrication
approach. As investigated by environmental scanning electron microscopy (ESEM),
the presented perfluorinated oil-infused Cu-BTC coating constitutes of a flat
liquid-covered surface with protruding edges of octahedral superstructured MOF
crystals. Water and non-polar diiodomethane droplets form considerably high contact
angles and even low-surface-tension fluids, e.g. acetone, form droplets on the
infused coating. The repellent properties towards the test fluids do not change
upon extended water spraying in contrast to oil-infused porous copper oxide or
native copper surfaces. It is discussed in detail, how the presented electrodeposited
MOF films grow and provide a proficient surface morphology to stabilise the functional
oil film due to hemiwicking.
article_number: '15400'
article_type: original
author:
- first_name: Jakob
full_name: Sablowski, Jakob
last_name: Sablowski
- first_name: Julia
full_name: Linnemann, Julia
id: '116779'
last_name: Linnemann
orcid: 0000-0001-6883-5424
- first_name: Simone
full_name: Hempel, Simone
last_name: Hempel
- first_name: Volker
full_name: Hoffmann, Volker
last_name: Hoffmann
- first_name: Simon
full_name: Unz, Simon
last_name: Unz
- first_name: Michael
full_name: Beckmann, Michael
last_name: Beckmann
- first_name: Lars
full_name: Giebeler, Lars
last_name: Giebeler
citation:
ama: Sablowski J, Linnemann J, Hempel S, et al. Electrodeposited metal-organic framework
films as self-assembled hierarchically superstructured supports for stable omniphobic
surface coatings. Scientific Reports. 2018;8(1). doi:10.1038/s41598-018-33542-4
apa: Sablowski, J., Linnemann, J., Hempel, S., Hoffmann, V., Unz, S., Beckmann,
M., & Giebeler, L. (2018). Electrodeposited metal-organic framework films
as self-assembled hierarchically superstructured supports for stable omniphobic
surface coatings. Scientific Reports, 8(1), Article 15400. https://doi.org/10.1038/s41598-018-33542-4
bibtex: '@article{Sablowski_Linnemann_Hempel_Hoffmann_Unz_Beckmann_Giebeler_2018,
title={Electrodeposited metal-organic framework films as self-assembled hierarchically
superstructured supports for stable omniphobic surface coatings}, volume={8},
DOI={10.1038/s41598-018-33542-4},
number={115400}, journal={Scientific Reports}, publisher={Springer Science and
Business Media LLC}, author={Sablowski, Jakob and Linnemann, Julia and Hempel,
Simone and Hoffmann, Volker and Unz, Simon and Beckmann, Michael and Giebeler,
Lars}, year={2018} }'
chicago: Sablowski, Jakob, Julia Linnemann, Simone Hempel, Volker Hoffmann, Simon
Unz, Michael Beckmann, and Lars Giebeler. “Electrodeposited Metal-Organic Framework
Films as Self-Assembled Hierarchically Superstructured Supports for Stable Omniphobic
Surface Coatings.” Scientific Reports 8, no. 1 (2018). https://doi.org/10.1038/s41598-018-33542-4.
ieee: 'J. Sablowski et al., “Electrodeposited metal-organic framework films
as self-assembled hierarchically superstructured supports for stable omniphobic
surface coatings,” Scientific Reports, vol. 8, no. 1, Art. no. 15400, 2018,
doi: 10.1038/s41598-018-33542-4.'
mla: Sablowski, Jakob, et al. “Electrodeposited Metal-Organic Framework Films as
Self-Assembled Hierarchically Superstructured Supports for Stable Omniphobic Surface
Coatings.” Scientific Reports, vol. 8, no. 1, 15400, Springer Science and
Business Media LLC, 2018, doi:10.1038/s41598-018-33542-4.
short: J. Sablowski, J. Linnemann, S. Hempel, V. Hoffmann, S. Unz, M. Beckmann,
L. Giebeler, Scientific Reports 8 (2018).
date_created: 2025-12-03T15:48:43Z
date_updated: 2025-12-03T16:34:02Z
department:
- _id: '985'
doi: 10.1038/s41598-018-33542-4
extern: '1'
intvolume: ' 8'
issue: '1'
keyword:
- electrodeposition
- metal-organic framework
- MOF
- drop-wise condensation
- omniphobic coatings
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
publication: Scientific Reports
publication_identifier:
issn:
- 2045-2322
publication_status: published
publisher: Springer Science and Business Media LLC
quality_controlled: '1'
status: public
title: Electrodeposited metal-organic framework films as self-assembled hierarchically
superstructured supports for stable omniphobic surface coatings
type: journal_article
user_id: '116779'
volume: 8
year: '2018'
...
---
_id: '62807'
abstract:
- lang: eng
text: The thermolysis of electrodeposited metal–organic framework (MOF) films represents
a novel approach to build supercapacitor electrodes of already electrically contacted
MOF-derived high-performance metal oxide/carbon materials which are also highly
interesting for other applications. MOFs are widely utilised as precursors to
synthesise functional materials by thermal decomposition (pyrolysis, carbonisation).
Using electrochemically coated MOF precursor films instead of powder greatly simplifies
the processing of such materials and potentially enhances the resulting active
materials' performance. In the case of electrochemical energy storage electrodes,
the coated substrate later functions as current collector which is well-attached
to the active material without the need for any additives. This close connection
decreases electron transfer resistances and saves multiple steps of powder formulation
and coating. Films of a metal–organic framework based on 1,3,5-benzene-tricarboxylate
(BTC) and cobalt(II) cations were electrochemically coated on cobalt foils which
act as the Co2+ cation source. Manganese films were electrodeposited and subsequently
partly redissolved in a linker-containing electrolyte to achieve Mn/Mn–BTC bilayered
films on stainless steel. This procedure extends the method for any kind of current
collector material. The films were thermolysed to gain nanostructured metal oxide
spinel (Me3O4)/carbon hybrid electrodes. Investigations of the electrochemical
properties in regard to supercapacitor applications show that Co3O4/C films exhibit
pseudocapacitance and that Mn3O4/C films are suitable for redox electrodes with
high-rate capability operating in a wide potential range in aqueous electrolytes.
Co–BTC powder was also thermally treated yielding cobalt particles embedded in
a graphitic carbon matrix. The pseudocapacitive properties of conventionally coated
films of this powder material are limited.
article_type: original
author:
- first_name: Julia
full_name: Linnemann, Julia
id: '116779'
last_name: Linnemann
orcid: 0000-0001-6883-5424
- first_name: Laura
full_name: Taudien, Laura
last_name: Taudien
- first_name: Markus
full_name: Klose, Markus
last_name: Klose
- first_name: Lars
full_name: Giebeler, Lars
last_name: Giebeler
citation:
ama: 'Linnemann J, Taudien L, Klose M, Giebeler L. Electrodeposited films to MOF-derived
electrochemical energy storage electrodes: a concept of simplified additive-free
electrode processing for self-standing, ready-to-use materials. Journal of
Materials Chemistry A. 2017;5(35):18420-18428. doi:10.1039/c7ta01874f'
apa: 'Linnemann, J., Taudien, L., Klose, M., & Giebeler, L. (2017). Electrodeposited
films to MOF-derived electrochemical energy storage electrodes: a concept of simplified
additive-free electrode processing for self-standing, ready-to-use materials.
Journal of Materials Chemistry A, 5(35), 18420–18428. https://doi.org/10.1039/c7ta01874f'
bibtex: '@article{Linnemann_Taudien_Klose_Giebeler_2017, title={Electrodeposited
films to MOF-derived electrochemical energy storage electrodes: a concept of simplified
additive-free electrode processing for self-standing, ready-to-use materials},
volume={5}, DOI={10.1039/c7ta01874f},
number={35}, journal={Journal of Materials Chemistry A}, publisher={Royal Society
of Chemistry (RSC)}, author={Linnemann, Julia and Taudien, Laura and Klose, Markus
and Giebeler, Lars}, year={2017}, pages={18420–18428} }'
chicago: 'Linnemann, Julia, Laura Taudien, Markus Klose, and Lars Giebeler. “Electrodeposited
Films to MOF-Derived Electrochemical Energy Storage Electrodes: A Concept of Simplified
Additive-Free Electrode Processing for Self-Standing, Ready-to-Use Materials.”
Journal of Materials Chemistry A 5, no. 35 (2017): 18420–28. https://doi.org/10.1039/c7ta01874f.'
ieee: 'J. Linnemann, L. Taudien, M. Klose, and L. Giebeler, “Electrodeposited films
to MOF-derived electrochemical energy storage electrodes: a concept of simplified
additive-free electrode processing for self-standing, ready-to-use materials,”
Journal of Materials Chemistry A, vol. 5, no. 35, pp. 18420–18428, 2017,
doi: 10.1039/c7ta01874f.'
mla: 'Linnemann, Julia, et al. “Electrodeposited Films to MOF-Derived Electrochemical
Energy Storage Electrodes: A Concept of Simplified Additive-Free Electrode Processing
for Self-Standing, Ready-to-Use Materials.” Journal of Materials Chemistry
A, vol. 5, no. 35, Royal Society of Chemistry (RSC), 2017, pp. 18420–28, doi:10.1039/c7ta01874f.'
short: J. Linnemann, L. Taudien, M. Klose, L. Giebeler, Journal of Materials Chemistry
A 5 (2017) 18420–18428.
date_created: 2025-12-03T15:43:52Z
date_updated: 2025-12-03T16:34:29Z
department:
- _id: '985'
doi: 10.1039/c7ta01874f
extern: '1'
intvolume: ' 5'
issue: '35'
keyword:
- electrodeposition
- metal-organic framework
- MOF
- supercapacitors
language:
- iso: eng
main_file_link:
- open_access: '1'
oa: '1'
page: 18420-18428
publication: Journal of Materials Chemistry A
publication_identifier:
issn:
- 2050-7488
- 2050-7496
publication_status: published
publisher: Royal Society of Chemistry (RSC)
quality_controlled: '1'
status: public
title: 'Electrodeposited films to MOF-derived electrochemical energy storage electrodes:
a concept of simplified additive-free electrode processing for self-standing, ready-to-use
materials'
type: journal_article
user_id: '116779'
volume: 5
year: '2017'
...
---
_id: '9887'
abstract:
- lang: eng
text: A model to calculate the locally resolved tangential contact forces of the
wheel rail contact with respect to contact kinematics, material and surface properties
as well as temperature is introduced. The elasticity of wheel and rail is modeled
as an elastic layer consisting of point contact elements connected by springs
to each other and to the wheel. Each element has two degrees of freedom in tangential
directions. The resulting total stiffness matrix is reduced to calculate only
the position of the elements in contact. Friction forces as well as contact stiffnesses
are incorporated by a nonlinear force-displacement characteristic, which originates
from a detailed contact model. The contact elements are transported through the
contact zone in discrete time steps. After each time step an equilibrium is calculated.
For all elements, their temperature and its influence on local friction are regarded
by calculating friction power and temperature each time step.
author:
- first_name: Jan
full_name: Neuhaus, Jan
last_name: Neuhaus
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Neuhaus J, Sextro W. Thermo-Mechanical Model for Wheel Rail Contact using
Coupled Point Contact Elements. In: Liu GR, Guan ZW, eds. Proceedings of the
5th International Conference on Computational Methods. ScienTech Publisher;
2014.'
apa: Neuhaus, J., & Sextro, W. (2014). Thermo-Mechanical Model for Wheel Rail
Contact using Coupled Point Contact Elements. In G. R. Liu & Z. W. Guan (Eds.),
Proceedings of the 5th International Conference on Computational Methods.
ScienTech Publisher.
bibtex: '@inproceedings{Neuhaus_Sextro_2014, title={Thermo-Mechanical Model for
Wheel Rail Contact using Coupled Point Contact Elements}, booktitle={Proceedings
of the 5th International Conference on Computational Methods}, publisher={ScienTech
Publisher}, author={Neuhaus, Jan and Sextro, Walter}, editor={Liu, G.R. and Guan,
Z.W.Editors}, year={2014} }'
chicago: Neuhaus, Jan, and Walter Sextro. “Thermo-Mechanical Model for Wheel Rail
Contact Using Coupled Point Contact Elements.” In Proceedings of the 5th International
Conference on Computational Methods, edited by G.R. Liu and Z.W. Guan. ScienTech
Publisher, 2014.
ieee: J. Neuhaus and W. Sextro, “Thermo-Mechanical Model for Wheel Rail Contact
using Coupled Point Contact Elements,” in Proceedings of the 5th International
Conference on Computational Methods, 2014.
mla: Neuhaus, Jan, and Walter Sextro. “Thermo-Mechanical Model for Wheel Rail Contact
Using Coupled Point Contact Elements.” Proceedings of the 5th International
Conference on Computational Methods, edited by G.R. Liu and Z.W. Guan, ScienTech
Publisher, 2014.
short: 'J. Neuhaus, W. Sextro, in: G.R. Liu, Z.W. Guan (Eds.), Proceedings of the
5th International Conference on Computational Methods, ScienTech Publisher, 2014.'
date_created: 2019-05-20T13:23:02Z
date_updated: 2019-09-16T10:59:46Z
department:
- _id: '151'
editor:
- first_name: G.R.
full_name: Liu, G.R.
last_name: Liu
- first_name: Z.W.
full_name: Guan, Z.W.
last_name: Guan
keyword:
- Rolling Contact
- Discrete Elements
- Contact Stiffness
- Temperature
language:
- iso: eng
publication: Proceedings of the 5th International Conference on Computational Methods
publisher: ScienTech Publisher
quality_controlled: '1'
status: public
title: Thermo-Mechanical Model for Wheel Rail Contact using Coupled Point Contact
Elements
type: conference
user_id: '55222'
year: '2014'
...