---
_id: '57190'
abstract:
- lang: eng
text: This paper deals with the modeling of a soft sensor for detecting α’-martensite
evolution from the micromagnetic signals that are measured during the reverse
flow forming of metastable AISI 304L austenitic steel. This model can be prospectively
used inside a closed-loop property-controlled flow forming process. To achieve
this, optimization by means of a non-linear regression of experimental data was
carried out. To collect the experimental data, specimens were produced by flow
forming seamless tubes at room temperature. Using a combination of production
parameters (like the infeed depth and feed rate), specimens with different α’-martensite
contents and wall-thickness reductions were produced. An equation to compute α’-martensite
from both specific production-process parameters and micromagnetic Barkhausen
noise (MBN) measurements was obtained using numerical methods. In this process,
the behavior of the quantity of interest (namely, the α’-martensite content) was
mathematically evaluated with respect to non-destructive MBN data and the feed
rate that was used to produce the components. A combination of exponential and
potential functions was defined as the ansatz functions of the model. The obtained
model was validated online and offline during the real flow forming of workpieces,
obtaining average deviations of up to 7% α’-martensite with respect to the model.
The implementation of the soft sensor model for property-controlled production
represents an important milestone for producing high-added-value components on
the basis of a well-understood process-microstructure-property relationship.
author:
- first_name: 'Julian '
full_name: 'Rozo Vasquez, Julian '
last_name: Rozo Vasquez
- first_name: Lukas
full_name: Kersting, Lukas
last_name: Kersting
- first_name: Bahman
full_name: Arian, Bahman
id: '36287'
last_name: Arian
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
- first_name: Frank
full_name: Walther, Frank
last_name: Walther
citation:
ama: 'Rozo Vasquez J, Kersting L, Arian B, Homberg W, Trächtler A, Walther F. Soft
Sensor Model of Phase Transformation During Flow Forming of Metastable Austenitic
Steel AISI 304L. In: Lecture Notes in Mechanical Engineering. Springer
International Publishing; 2024. doi:10.1007/978-3-031-58006-2_10'
apa: Rozo Vasquez, J., Kersting, L., Arian, B., Homberg, W., Trächtler, A., &
Walther, F. (2024). Soft Sensor Model of Phase Transformation During Flow Forming
of Metastable Austenitic Steel AISI 304L. In Lecture Notes in Mechanical Engineering.
Springer International Publishing. https://doi.org/10.1007/978-3-031-58006-2_10
bibtex: '@inbook{Rozo Vasquez_Kersting_Arian_Homberg_Trächtler_Walther_2024, place={Cham},
title={Soft Sensor Model of Phase Transformation During Flow Forming of Metastable
Austenitic Steel AISI 304L}, DOI={10.1007/978-3-031-58006-2_10},
booktitle={Lecture Notes in Mechanical Engineering}, publisher={Springer International
Publishing}, author={Rozo Vasquez, Julian and Kersting, Lukas and Arian, Bahman
and Homberg, Werner and Trächtler, Ansgar and Walther, Frank}, year={2024} }'
chicago: 'Rozo Vasquez, Julian , Lukas Kersting, Bahman Arian, Werner Homberg, Ansgar
Trächtler, and Frank Walther. “Soft Sensor Model of Phase Transformation During
Flow Forming of Metastable Austenitic Steel AISI 304L.” In Lecture Notes in
Mechanical Engineering. Cham: Springer International Publishing, 2024. https://doi.org/10.1007/978-3-031-58006-2_10.'
ieee: 'J. Rozo Vasquez, L. Kersting, B. Arian, W. Homberg, A. Trächtler, and F.
Walther, “Soft Sensor Model of Phase Transformation During Flow Forming of Metastable
Austenitic Steel AISI 304L,” in Lecture Notes in Mechanical Engineering,
Cham: Springer International Publishing, 2024.'
mla: Rozo Vasquez, Julian, et al. “Soft Sensor Model of Phase Transformation During
Flow Forming of Metastable Austenitic Steel AISI 304L.” Lecture Notes in Mechanical
Engineering, Springer International Publishing, 2024, doi:10.1007/978-3-031-58006-2_10.
short: 'J. Rozo Vasquez, L. Kersting, B. Arian, W. Homberg, A. Trächtler, F. Walther,
in: Lecture Notes in Mechanical Engineering, Springer International Publishing,
Cham, 2024.'
date_created: 2024-11-18T10:24:06Z
date_updated: 2024-11-18T10:39:03Z
department:
- _id: '153'
- _id: '241'
- _id: '156'
doi: 10.1007/978-3-031-58006-2_10
language:
- iso: eng
place: Cham
publication: Lecture Notes in Mechanical Engineering
publication_identifier:
isbn:
- '9783031580055'
- '9783031580062'
issn:
- 2195-4356
- 2195-4364
publication_status: published
publisher: Springer International Publishing
quality_controlled: '1'
status: public
title: Soft Sensor Model of Phase Transformation During Flow Forming of Metastable
Austenitic Steel AISI 304L
type: book_chapter
user_id: '41470'
year: '2024'
...
---
_id: '57189'
abstract:
- lang: eng
text: "This paper deals with micromagnetic measurements for online detection of\r\nstrain-induced
α’-martensite during plastic deformation of metastable\r\naustenitic steel AISI
304L. The operating principles of the sensors are\r\nBarkhausen noise (MBN) and
eddy currents (EC), which are suitable for\r\ndetection of microstructure evolution
due to formation of ferromagnetic\r\nphases. Nevertheless, the description of
the calibration and\r\ntransformation models of the micromagnetic measurements
into\r\nquantitative α’-martensite fractions is beyond the scope of this paper.\r\nThe
focus will be put on the qualification of different micromagnetic\r\nmethods as
well as of different measurement systems under conditions\r\nsimilar to the real
ones during production, which is crucial for\r\nimplementation of a property-controlled
flow forming process. The\r\ninvestigation was carried out on tubular specimens
produced by flow\r\nforming, which have different content of α’-martensite. To
characterize\r\nthe sensitivity of the sensors, different contact conditions between\r\nsensors
and workpieces were reproduced. MBN sensors are suitable for\r\ndetecting amount
of α’-martensite, but the measurements are affected by\r\nthe surface roughness.
This entails that the calibration models for MBN\r\nsensors must take account
of these effects. EC sensors show a closer\r\nmatch with the amount of α’-martensite
without having major affectation\r\nby other effects."
author:
- first_name: 'Julian '
full_name: 'Rozo Vasquez, Julian '
last_name: Rozo Vasquez
- first_name: Hanigah
full_name: Kanagarajah, Hanigah
last_name: Kanagarajah
- first_name: Bahman
full_name: Arian, Bahman
id: '36287'
last_name: Arian
- first_name: Lukas
full_name: Kersting, Lukas
last_name: Kersting
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
- first_name: Frank
full_name: Walther, Frank
last_name: Walther
citation:
ama: 'Rozo Vasquez J, Kanagarajah H, Arian B, et al. Barkhausen noise- and eddy
current-based measurements for online detection of deformation-induced martensite
during flow forming of metastable austenitic steel AISI 304L. In: Authorea, Inc.;
2024.'
apa: Rozo Vasquez, J., Kanagarajah, H., Arian, B., Kersting, L., Homberg, W., Trächtler,
A., & Walther, F. (2024). Barkhausen noise- and eddy current-based measurements
for online detection of deformation-induced martensite during flow forming of
metastable austenitic steel AISI 304L.
bibtex: '@inproceedings{Rozo Vasquez_Kanagarajah_Arian_Kersting_Homberg_Trächtler_Walther_2024,
title={Barkhausen noise- and eddy current-based measurements for online detection
of deformation-induced martensite during flow forming of metastable austenitic
steel AISI 304L}, publisher={Authorea, Inc.}, author={Rozo Vasquez, Julian and
Kanagarajah, Hanigah and Arian, Bahman and Kersting, Lukas and Homberg, Werner
and Trächtler, Ansgar and Walther, Frank}, year={2024} }'
chicago: Rozo Vasquez, Julian , Hanigah Kanagarajah, Bahman Arian, Lukas Kersting,
Werner Homberg, Ansgar Trächtler, and Frank Walther. “Barkhausen Noise- and Eddy
Current-Based Measurements for Online Detection of Deformation-Induced Martensite
during Flow Forming of Metastable Austenitic Steel AISI 304L.” Authorea, Inc.,
2024.
ieee: J. Rozo Vasquez et al., “Barkhausen noise- and eddy current-based measurements
for online detection of deformation-induced martensite during flow forming of
metastable austenitic steel AISI 304L,” 2024.
mla: Rozo Vasquez, Julian, et al. Barkhausen Noise- and Eddy Current-Based Measurements
for Online Detection of Deformation-Induced Martensite during Flow Forming of
Metastable Austenitic Steel AISI 304L. Authorea, Inc., 2024.
short: 'J. Rozo Vasquez, H. Kanagarajah, B. Arian, L. Kersting, W. Homberg, A. Trächtler,
F. Walther, in: Authorea, Inc., 2024.'
date_created: 2024-11-18T10:22:34Z
date_updated: 2024-11-18T10:39:19Z
department:
- _id: '153'
- _id: '241'
- _id: '156'
language:
- iso: eng
publication_status: published
publisher: Authorea, Inc.
quality_controlled: '1'
status: public
title: Barkhausen noise- and eddy current-based measurements for online detection
of deformation-induced martensite during flow forming of metastable austenitic steel
AISI 304L
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57175'
author:
- first_name: Lukas
full_name: Bathelt, Lukas
last_name: Bathelt
- first_name: Eugen
full_name: Djakow, Eugen
id: '7904'
last_name: Djakow
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: Bathelt L, Djakow E, Henke C, Trächtler A. Innovative measurement system for
saber curvature observation in straightening processes. Procedia Computer Science.
2024;232:2018-2027. doi:10.1016/j.procs.2024.02.024
apa: Bathelt, L., Djakow, E., Henke, C., & Trächtler, A. (2024). Innovative
measurement system for saber curvature observation in straightening processes.
Procedia Computer Science, 232, 2018–2027. https://doi.org/10.1016/j.procs.2024.02.024
bibtex: '@article{Bathelt_Djakow_Henke_Trächtler_2024, title={Innovative measurement
system for saber curvature observation in straightening processes}, volume={232},
DOI={10.1016/j.procs.2024.02.024},
journal={Procedia Computer Science}, publisher={Elsevier BV}, author={Bathelt,
Lukas and Djakow, Eugen and Henke, Christian and Trächtler, Ansgar}, year={2024},
pages={2018–2027} }'
chicago: 'Bathelt, Lukas, Eugen Djakow, Christian Henke, and Ansgar Trächtler. “Innovative
Measurement System for Saber Curvature Observation in Straightening Processes.”
Procedia Computer Science 232 (2024): 2018–27. https://doi.org/10.1016/j.procs.2024.02.024.'
ieee: 'L. Bathelt, E. Djakow, C. Henke, and A. Trächtler, “Innovative measurement
system for saber curvature observation in straightening processes,” Procedia
Computer Science, vol. 232, pp. 2018–2027, 2024, doi: 10.1016/j.procs.2024.02.024.'
mla: Bathelt, Lukas, et al. “Innovative Measurement System for Saber Curvature Observation
in Straightening Processes.” Procedia Computer Science, vol. 232, Elsevier
BV, 2024, pp. 2018–27, doi:10.1016/j.procs.2024.02.024.
short: L. Bathelt, E. Djakow, C. Henke, A. Trächtler, Procedia Computer Science
232 (2024) 2018–2027.
date_created: 2024-11-18T10:09:22Z
date_updated: 2024-11-18T10:38:39Z
department:
- _id: '153'
- _id: '241'
doi: 10.1016/j.procs.2024.02.024
intvolume: ' 232'
language:
- iso: eng
page: 2018-2027
publication: Procedia Computer Science
publication_identifier:
issn:
- 1877-0509
publication_status: published
publisher: Elsevier BV
quality_controlled: '1'
status: public
title: Innovative measurement system for saber curvature observation in straightening
processes
type: journal_article
user_id: '41470'
volume: 232
year: '2024'
...
---
_id: '57185'
author:
- first_name: Fabian
full_name: Reiling, Fabian
last_name: Reiling
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- first_name: Stefan
full_name: Gröger, Stefan
last_name: Gröger
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: 'Reiling F, Henke C, Hunstig M, Gröger S, Trächtler A. Batch constrained multi-objective
Bayesian optimization using the example of ultrasonic wire bonding. In: 2024
IEEE International Conference on Advanced Intelligent Mechatronics (AIM).
IEEE; 2024. doi:10.1109/aim55361.2024.10637123'
apa: Reiling, F., Henke, C., Hunstig, M., Gröger, S., & Trächtler, A. (2024).
Batch constrained multi-objective Bayesian optimization using the example of ultrasonic
wire bonding. 2024 IEEE International Conference on Advanced Intelligent Mechatronics
(AIM). https://doi.org/10.1109/aim55361.2024.10637123
bibtex: '@inproceedings{Reiling_Henke_Hunstig_Gröger_Trächtler_2024, title={Batch
constrained multi-objective Bayesian optimization using the example of ultrasonic
wire bonding}, DOI={10.1109/aim55361.2024.10637123},
booktitle={2024 IEEE International Conference on Advanced Intelligent Mechatronics
(AIM)}, publisher={IEEE}, author={Reiling, Fabian and Henke, Christian and Hunstig,
Matthias and Gröger, Stefan and Trächtler, Ansgar}, year={2024} }'
chicago: Reiling, Fabian, Christian Henke, Matthias Hunstig, Stefan Gröger, and
Ansgar Trächtler. “Batch Constrained Multi-Objective Bayesian Optimization Using
the Example of Ultrasonic Wire Bonding.” In 2024 IEEE International Conference
on Advanced Intelligent Mechatronics (AIM). IEEE, 2024. https://doi.org/10.1109/aim55361.2024.10637123.
ieee: 'F. Reiling, C. Henke, M. Hunstig, S. Gröger, and A. Trächtler, “Batch constrained
multi-objective Bayesian optimization using the example of ultrasonic wire bonding,”
2024, doi: 10.1109/aim55361.2024.10637123.'
mla: Reiling, Fabian, et al. “Batch Constrained Multi-Objective Bayesian Optimization
Using the Example of Ultrasonic Wire Bonding.” 2024 IEEE International Conference
on Advanced Intelligent Mechatronics (AIM), IEEE, 2024, doi:10.1109/aim55361.2024.10637123.
short: 'F. Reiling, C. Henke, M. Hunstig, S. Gröger, A. Trächtler, in: 2024 IEEE
International Conference on Advanced Intelligent Mechatronics (AIM), IEEE, 2024.'
date_created: 2024-11-18T10:18:18Z
date_updated: 2024-11-18T10:40:23Z
department:
- _id: '153'
- _id: '241'
doi: 10.1109/aim55361.2024.10637123
language:
- iso: eng
publication: 2024 IEEE International Conference on Advanced Intelligent Mechatronics
(AIM)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: Batch constrained multi-objective Bayesian optimization using the example of
ultrasonic wire bonding
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57188'
author:
- first_name: Stephan
full_name: Stieren, Stephan
last_name: Stieren
- first_name: Achim
full_name: Werner, Achim
last_name: Werner
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: 'Stieren S, Werner A, Henke C, Trächtler A. A comprehensive test infrastructure
for the evaluation of energy management systems of the household and grid level.
In: 2024 IEEE Conference on Technologies for Sustainability (SusTech).
IEEE; 2024. doi:10.1109/sustech60925.2024.10553455'
apa: Stieren, S., Werner, A., Henke, C., & Trächtler, A. (2024). A comprehensive
test infrastructure for the evaluation of energy management systems of the household
and grid level. 2024 IEEE Conference on Technologies for Sustainability (SusTech).
https://doi.org/10.1109/sustech60925.2024.10553455
bibtex: '@inproceedings{Stieren_Werner_Henke_Trächtler_2024, title={A comprehensive
test infrastructure for the evaluation of energy management systems of the household
and grid level}, DOI={10.1109/sustech60925.2024.10553455},
booktitle={2024 IEEE Conference on Technologies for Sustainability (SusTech)},
publisher={IEEE}, author={Stieren, Stephan and Werner, Achim and Henke, Christian
and Trächtler, Ansgar}, year={2024} }'
chicago: Stieren, Stephan, Achim Werner, Christian Henke, and Ansgar Trächtler.
“A Comprehensive Test Infrastructure for the Evaluation of Energy Management Systems
of the Household and Grid Level.” In 2024 IEEE Conference on Technologies for
Sustainability (SusTech). IEEE, 2024. https://doi.org/10.1109/sustech60925.2024.10553455.
ieee: 'S. Stieren, A. Werner, C. Henke, and A. Trächtler, “A comprehensive test
infrastructure for the evaluation of energy management systems of the household
and grid level,” 2024, doi: 10.1109/sustech60925.2024.10553455.'
mla: Stieren, Stephan, et al. “A Comprehensive Test Infrastructure for the Evaluation
of Energy Management Systems of the Household and Grid Level.” 2024 IEEE Conference
on Technologies for Sustainability (SusTech), IEEE, 2024, doi:10.1109/sustech60925.2024.10553455.
short: 'S. Stieren, A. Werner, C. Henke, A. Trächtler, in: 2024 IEEE Conference
on Technologies for Sustainability (SusTech), IEEE, 2024.'
date_created: 2024-11-18T10:21:54Z
date_updated: 2024-11-18T10:39:28Z
department:
- _id: '153'
- _id: '241'
doi: 10.1109/sustech60925.2024.10553455
language:
- iso: eng
publication: 2024 IEEE Conference on Technologies for Sustainability (SusTech)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: A comprehensive test infrastructure for the evaluation of energy management
systems of the household and grid level
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57187'
author:
- first_name: Stephan
full_name: Stieren, Stephan
last_name: Stieren
- first_name: Luca
full_name: Lenger, Luca
last_name: Lenger
- first_name: Moritz
full_name: Kliem, Moritz
last_name: Kliem
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: 'Stieren S, Lenger L, Kliem M, Henke C, Trächtler A. Development of digital
business models for holistic energy management on device, home and grid level.
In: 2024 IEEE International Systems Conference (SysCon). IEEE; 2024. doi:10.1109/syscon61195.2024.10553440'
apa: Stieren, S., Lenger, L., Kliem, M., Henke, C., & Trächtler, A. (2024).
Development of digital business models for holistic energy management on device,
home and grid level. 2024 IEEE International Systems Conference (SysCon).
https://doi.org/10.1109/syscon61195.2024.10553440
bibtex: '@inproceedings{Stieren_Lenger_Kliem_Henke_Trächtler_2024, title={Development
of digital business models for holistic energy management on device, home and
grid level}, DOI={10.1109/syscon61195.2024.10553440},
booktitle={2024 IEEE International Systems Conference (SysCon)}, publisher={IEEE},
author={Stieren, Stephan and Lenger, Luca and Kliem, Moritz and Henke, Christian
and Trächtler, Ansgar}, year={2024} }'
chicago: Stieren, Stephan, Luca Lenger, Moritz Kliem, Christian Henke, and Ansgar
Trächtler. “Development of Digital Business Models for Holistic Energy Management
on Device, Home and Grid Level.” In 2024 IEEE International Systems Conference
(SysCon). IEEE, 2024. https://doi.org/10.1109/syscon61195.2024.10553440.
ieee: 'S. Stieren, L. Lenger, M. Kliem, C. Henke, and A. Trächtler, “Development
of digital business models for holistic energy management on device, home and
grid level,” 2024, doi: 10.1109/syscon61195.2024.10553440.'
mla: Stieren, Stephan, et al. “Development of Digital Business Models for Holistic
Energy Management on Device, Home and Grid Level.” 2024 IEEE International
Systems Conference (SysCon), IEEE, 2024, doi:10.1109/syscon61195.2024.10553440.
short: 'S. Stieren, L. Lenger, M. Kliem, C. Henke, A. Trächtler, in: 2024 IEEE International
Systems Conference (SysCon), IEEE, 2024.'
date_created: 2024-11-18T10:21:17Z
date_updated: 2024-11-18T10:39:56Z
department:
- _id: '153'
- _id: '241'
doi: 10.1109/syscon61195.2024.10553440
language:
- iso: eng
publication: 2024 IEEE International Systems Conference (SysCon)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: Development of digital business models for holistic energy management on device,
home and grid level
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57184'
author:
- first_name: Yi Han
full_name: Poy, Yi Han
last_name: Poy
- first_name: Martin
full_name: Zarnack, Martin
last_name: Zarnack
- first_name: Mark
full_name: Henkenjohann, Mark
last_name: Henkenjohann
- first_name: Udo
full_name: Nolte, Udo
last_name: Nolte
citation:
ama: 'Poy YH, Zarnack M, Henkenjohann M, Nolte U. Aerodynamic Derivatives Identification
of a Fixed-Wing UAV using Flight Data. In: AIAA SCITECH 2024 Forum. American
Institute of Aeronautics and Astronautics; 2024. doi:10.2514/6.2024-0248'
apa: Poy, Y. H., Zarnack, M., Henkenjohann, M., & Nolte, U. (2024). Aerodynamic
Derivatives Identification of a Fixed-Wing UAV using Flight Data. AIAA SCITECH
2024 Forum. https://doi.org/10.2514/6.2024-0248
bibtex: '@inproceedings{Poy_Zarnack_Henkenjohann_Nolte_2024, title={Aerodynamic
Derivatives Identification of a Fixed-Wing UAV using Flight Data}, DOI={10.2514/6.2024-0248},
booktitle={AIAA SCITECH 2024 Forum}, publisher={American Institute of Aeronautics
and Astronautics}, author={Poy, Yi Han and Zarnack, Martin and Henkenjohann, Mark
and Nolte, Udo}, year={2024} }'
chicago: Poy, Yi Han, Martin Zarnack, Mark Henkenjohann, and Udo Nolte. “Aerodynamic
Derivatives Identification of a Fixed-Wing UAV Using Flight Data.” In AIAA
SCITECH 2024 Forum. American Institute of Aeronautics and Astronautics, 2024.
https://doi.org/10.2514/6.2024-0248.
ieee: 'Y. H. Poy, M. Zarnack, M. Henkenjohann, and U. Nolte, “Aerodynamic Derivatives
Identification of a Fixed-Wing UAV using Flight Data,” 2024, doi: 10.2514/6.2024-0248.'
mla: Poy, Yi Han, et al. “Aerodynamic Derivatives Identification of a Fixed-Wing
UAV Using Flight Data.” AIAA SCITECH 2024 Forum, American Institute of
Aeronautics and Astronautics, 2024, doi:10.2514/6.2024-0248.
short: 'Y.H. Poy, M. Zarnack, M. Henkenjohann, U. Nolte, in: AIAA SCITECH 2024 Forum,
American Institute of Aeronautics and Astronautics, 2024.'
date_created: 2024-11-18T10:17:33Z
date_updated: 2024-11-18T10:40:33Z
department:
- _id: '153'
- _id: '241'
doi: 10.2514/6.2024-0248
language:
- iso: eng
publication: AIAA SCITECH 2024 Forum
publication_status: published
publisher: American Institute of Aeronautics and Astronautics
quality_controlled: '1'
status: public
title: Aerodynamic Derivatives Identification of a Fixed-Wing UAV using Flight Data
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57186'
author:
- first_name: Robin
full_name: Schmidt, Robin
last_name: Schmidt
- first_name: Stefan
full_name: Schütz, Stefan
last_name: Schütz
- first_name: Sebastian
full_name: Prinz, Sebastian
last_name: Prinz
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: 'Schmidt R, Schütz S, Prinz S, Henke C, Trächtler A. Optimizing Welding Efficiency:
A First Approach for an Automated Mobile Welding Robot. In: Proceedings of
the 4th IFSA Winter Conference on Automation, Robotics and Communications for
Industry 4.0/5.0 (ARCI 2024). ; 2024.'
apa: 'Schmidt, R., Schütz, S., Prinz, S., Henke, C., & Trächtler, A. (2024).
Optimizing Welding Efficiency: A First Approach for an Automated Mobile Welding
Robot. Proceedings of the 4th IFSA Winter Conference on Automation, Robotics
and Communications for Industry 4.0/5.0 (ARCI 2024).'
bibtex: '@inproceedings{Schmidt_Schütz_Prinz_Henke_Trächtler_2024, title={Optimizing
Welding Efficiency: A First Approach for an Automated Mobile Welding Robot}, booktitle={Proceedings
of the 4th IFSA Winter Conference on Automation, Robotics and Communications for
Industry 4.0/5.0 (ARCI 2024)}, author={Schmidt, Robin and Schütz, Stefan and Prinz,
Sebastian and Henke, Christian and Trächtler, Ansgar}, year={2024} }'
chicago: 'Schmidt, Robin, Stefan Schütz, Sebastian Prinz, Christian Henke, and Ansgar
Trächtler. “Optimizing Welding Efficiency: A First Approach for an Automated Mobile
Welding Robot.” In Proceedings of the 4th IFSA Winter Conference on Automation,
Robotics and Communications for Industry 4.0/5.0 (ARCI 2024), 2024.'
ieee: 'R. Schmidt, S. Schütz, S. Prinz, C. Henke, and A. Trächtler, “Optimizing
Welding Efficiency: A First Approach for an Automated Mobile Welding Robot,” 2024.'
mla: 'Schmidt, Robin, et al. “Optimizing Welding Efficiency: A First Approach for
an Automated Mobile Welding Robot.” Proceedings of the 4th IFSA Winter Conference
on Automation, Robotics and Communications for Industry 4.0/5.0 (ARCI 2024),
2024.'
short: 'R. Schmidt, S. Schütz, S. Prinz, C. Henke, A. Trächtler, in: Proceedings
of the 4th IFSA Winter Conference on Automation, Robotics and Communications for
Industry 4.0/5.0 (ARCI 2024), 2024.'
date_created: 2024-11-18T10:20:58Z
date_updated: 2024-11-18T10:40:13Z
department:
- _id: '153'
- _id: '241'
language:
- iso: eng
publication: Proceedings of the 4th IFSA Winter Conference on Automation, Robotics
and Communications for Industry 4.0/5.0 (ARCI 2024)
quality_controlled: '1'
status: public
title: 'Optimizing Welding Efficiency: A First Approach for an Automated Mobile Welding
Robot'
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57176'
abstract:
- lang: eng
text: Incremental nonlinear dynamic inversion (INDI) is a widely used approach to
controlling UAVs with highly nonlinear dynamics. One key element of INDI-based
controllers is the control allocation realizing pseudo controls using available
actuators. However, the tracking of commanded pseudo controls is not the only
objective considered during control allocation. Since the approach only works
locally due to linearization and the solution is often ambiguous, additional aspects
like control efforts or penalizing the deviation of certain states must be considered.
Conducting the control allocation by solving a quadratic program this results
in a considerable number of weighting parameters, which must be tuned during control
design. Currently, this is conducted manually and is therefore time consuming.
An automated approach for tuning these parameters is therefore highly beneficial.
Thus, this paper presents and evaluates a model-based approach automatically tuning
the control allocation parameters of a tiltrotor VTOL using an optimization algorithm.
This optimization algorithm searches for optimal parameters minimizing a cost
functional that reflects the design target. This cost functional is calculated
based on a test mission for the VTOL which is conducted within a simulation environment.
The test mission represents the common operating range of the VTOL. The simulation
environment consists of an aircraft model as well as a model of the INDI-based
controller which is dependent on the control allocation parameters. On this basis,
model-based optimization is conducted and the optimal parameters are identified.
Finally, successful real-world tests on a 4-degrees-of-freedom testbench using
the identified parameters are presented. Since the control allocation parameters
can significantly influence the aircraft’s stability, the 4-DOF testbench for
the aircraft is required for rapid validation of the parameters at a minimum amount
of risk.
article_number: '187'
author:
- first_name: Mark
full_name: Henkenjohann, Mark
last_name: Henkenjohann
- first_name: Udo
full_name: Nolte, Udo
last_name: Nolte
- first_name: Fabian
full_name: Sion, Fabian
last_name: Sion
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: Henkenjohann M, Nolte U, Sion F, Henke C, Trächtler A. Parameter Tuning Approach
for Incremental Nonlinear Dynamic Inversion-Based Flight Controllers. Actuators.
2024;13(5). doi:10.3390/act13050187
apa: Henkenjohann, M., Nolte, U., Sion, F., Henke, C., & Trächtler, A. (2024).
Parameter Tuning Approach for Incremental Nonlinear Dynamic Inversion-Based Flight
Controllers. Actuators, 13(5), Article 187. https://doi.org/10.3390/act13050187
bibtex: '@article{Henkenjohann_Nolte_Sion_Henke_Trächtler_2024, title={Parameter
Tuning Approach for Incremental Nonlinear Dynamic Inversion-Based Flight Controllers},
volume={13}, DOI={10.3390/act13050187},
number={5187}, journal={Actuators}, publisher={MDPI AG}, author={Henkenjohann,
Mark and Nolte, Udo and Sion, Fabian and Henke, Christian and Trächtler, Ansgar},
year={2024} }'
chicago: Henkenjohann, Mark, Udo Nolte, Fabian Sion, Christian Henke, and Ansgar
Trächtler. “Parameter Tuning Approach for Incremental Nonlinear Dynamic Inversion-Based
Flight Controllers.” Actuators 13, no. 5 (2024). https://doi.org/10.3390/act13050187.
ieee: 'M. Henkenjohann, U. Nolte, F. Sion, C. Henke, and A. Trächtler, “Parameter
Tuning Approach for Incremental Nonlinear Dynamic Inversion-Based Flight Controllers,”
Actuators, vol. 13, no. 5, Art. no. 187, 2024, doi: 10.3390/act13050187.'
mla: Henkenjohann, Mark, et al. “Parameter Tuning Approach for Incremental Nonlinear
Dynamic Inversion-Based Flight Controllers.” Actuators, vol. 13, no. 5,
187, MDPI AG, 2024, doi:10.3390/act13050187.
short: M. Henkenjohann, U. Nolte, F. Sion, C. Henke, A. Trächtler, Actuators 13
(2024).
date_created: 2024-11-18T10:09:58Z
date_updated: 2024-11-18T10:42:19Z
department:
- _id: '153'
- _id: '241'
doi: 10.3390/act13050187
intvolume: ' 13'
issue: '5'
language:
- iso: eng
publication: Actuators
publication_identifier:
issn:
- 2076-0825
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Parameter Tuning Approach for Incremental Nonlinear Dynamic Inversion-Based
Flight Controllers
type: journal_article
user_id: '41470'
volume: 13
year: '2024'
...
---
_id: '57173'
abstract:
- lang: eng
text: Manufacturing processes benefit from property control enabling reproducibility,
application oriented outcomes, and efficient part production. In reverse flow
forming, state of the art practices focus primarily on geometry control, neglecting
property control. Given the intricacies of the process involving the interaction
of tool and machine behavior, process parameters, properties of semi finished
products and temperatures, incorporating process control becomes an imperative
for producing components with predefined properties. The property controlled within
this reverse flow forming process is the local α’ martensite content. Therefore,
process strategies to actively influence the α’ martensite content must be implemented.
In this study seamless AISI 304L steel tubes are used, where α’ martensite formation
is strain and/or temperature induced through phase transformation within the
process. This paper presents innovative process strategies, methods, and specially
developed mechanical and thermal actuator systems to locally increase or suppress
the α’ martensite content. The use and implementation of these approaches and
tools allows the creation of unique optically invisible microstructure profiles
containing 3D gradings, implying a radial grading of α’ martensite. The locally
implemented α’ martensite, forming these 3D gradings, offers potential applications
for functional or sensory purposes. This paper extends beyond theoretical concepts,
providing tangible component outcomes.
author:
- first_name: Bahman
full_name: Arian, Bahman
id: '36287'
last_name: Arian
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
- first_name: Lukas
full_name: Kersting, Lukas
last_name: Kersting
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
- first_name: Julian
full_name: Rozo Vasquez, Julian
last_name: Rozo Vasquez
- first_name: Frank
full_name: Walther, Frank
last_name: Walther
citation:
ama: 'Arian B, Homberg W, Kersting L, Trächtler A, Rozo Vasquez J, Walther F. α’-martensite
grading techniques in reverse flow forming of AISI 304L. In: Materials Research
Proceedings. Vol 44. Materials Research Forum LLC; 2024. doi:10.21741/9781644903254-76'
apa: Arian, B., Homberg, W., Kersting, L., Trächtler, A., Rozo Vasquez, J., &
Walther, F. (2024). α’-martensite grading techniques in reverse flow forming of
AISI 304L. Materials Research Proceedings, 44. https://doi.org/10.21741/9781644903254-76
bibtex: '@inproceedings{Arian_Homberg_Kersting_Trächtler_Rozo Vasquez_Walther_2024,
title={α’-martensite grading techniques in reverse flow forming of AISI 304L},
volume={44}, DOI={10.21741/9781644903254-76},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Arian, Bahman and Homberg, Werner and Kersting, Lukas and Trächtler,
Ansgar and Rozo Vasquez, Julian and Walther, Frank}, year={2024} }'
chicago: Arian, Bahman, Werner Homberg, Lukas Kersting, Ansgar Trächtler, Julian
Rozo Vasquez, and Frank Walther. “α’-Martensite Grading Techniques in Reverse
Flow Forming of AISI 304L.” In Materials Research Proceedings, Vol. 44.
Materials Research Forum LLC, 2024. https://doi.org/10.21741/9781644903254-76.
ieee: 'B. Arian, W. Homberg, L. Kersting, A. Trächtler, J. Rozo Vasquez, and F.
Walther, “α’-martensite grading techniques in reverse flow forming of AISI 304L,”
in Materials Research Proceedings, 2024, vol. 44, doi: 10.21741/9781644903254-76.'
mla: Arian, Bahman, et al. “α’-Martensite Grading Techniques in Reverse Flow Forming
of AISI 304L.” Materials Research Proceedings, vol. 44, Materials Research
Forum LLC, 2024, doi:10.21741/9781644903254-76.
short: 'B. Arian, W. Homberg, L. Kersting, A. Trächtler, J. Rozo Vasquez, F. Walther,
in: Materials Research Proceedings, Materials Research Forum LLC, 2024.'
date_created: 2024-11-18T10:06:17Z
date_updated: 2024-11-18T10:42:55Z
department:
- _id: '241'
- _id: '153'
- _id: '156'
doi: 10.21741/9781644903254-76
intvolume: ' 44'
language:
- iso: eng
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: α’-martensite grading techniques in reverse flow forming of AISI 304L
type: conference
user_id: '41470'
volume: 44
year: '2024'
...
---
_id: '57174'
abstract:
- lang: eng
text: Increasing the sustainability and resource efficiency of forming processes
is one of today's major goals. High-strength wire materials are usually available
as strip material and are subjected to a downstream forming process such as punch-bending
to produce parts for the electronics industry, for example. During the manufacturing
process of the semi-finished product, residual stresses and plastic deformations
are introduced into the wire by rolling and drawing processes. Straightening machines
are used in the production lines to compensate for these. To increase the sustainability
of these production lines, the straightening process is an essential step. Before
the continuous manufacturing process starts, the straightening process must be
set up and the optimal roller positions must be found. Once the process is set
up, the roller position settings are usually not changed. Due to missing measurement
systems for the straightening quality, it is not possible to dynamically adjust
the positions of the straightening rollers to variations in the material properties.
This leads to deviations in the dimensional accuracy of the components to be produced
and thus to an increase in the rejection rate in the manufacturing processes.
To reduce the rejection rate, a novel control system for a continuous feedback
control of a straightening process is presented in this paper. This leads to a
reduction of the rejection rate and unnecessary preforming operations in wire
straightening process. The result is an increasing sustainability and efficiency
of these production process.
author:
- first_name: Lukas
full_name: Bathelt, Lukas
last_name: Bathelt
- first_name: Eugen
full_name: Djakow, Eugen
id: '7904'
last_name: Djakow
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: 'Bathelt L, Djakow E, Henke C, Trächtler A. Innovative control system for straightening
machines using sensor information from downstream processes. In: Materials
Research Proceedings. Vol 41. Materials Research Forum LLC; 2024. doi:10.21741/9781644903131-308'
apa: Bathelt, L., Djakow, E., Henke, C., & Trächtler, A. (2024). Innovative
control system for straightening machines using sensor information from downstream
processes. Materials Research Proceedings, 41. https://doi.org/10.21741/9781644903131-308
bibtex: '@inproceedings{Bathelt_Djakow_Henke_Trächtler_2024, title={Innovative control
system for straightening machines using sensor information from downstream processes},
volume={41}, DOI={10.21741/9781644903131-308},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Bathelt, Lukas and Djakow, Eugen and Henke, Christian and Trächtler,
Ansgar}, year={2024} }'
chicago: Bathelt, Lukas, Eugen Djakow, Christian Henke, and Ansgar Trächtler. “Innovative
Control System for Straightening Machines Using Sensor Information from Downstream
Processes.” In Materials Research Proceedings, Vol. 41. Materials Research
Forum LLC, 2024. https://doi.org/10.21741/9781644903131-308.
ieee: 'L. Bathelt, E. Djakow, C. Henke, and A. Trächtler, “Innovative control system
for straightening machines using sensor information from downstream processes,”
in Materials Research Proceedings, 2024, vol. 41, doi: 10.21741/9781644903131-308.'
mla: Bathelt, Lukas, et al. “Innovative Control System for Straightening Machines
Using Sensor Information from Downstream Processes.” Materials Research Proceedings,
vol. 41, Materials Research Forum LLC, 2024, doi:10.21741/9781644903131-308.
short: 'L. Bathelt, E. Djakow, C. Henke, A. Trächtler, in: Materials Research Proceedings,
Materials Research Forum LLC, 2024.'
date_created: 2024-11-18T10:08:22Z
date_updated: 2024-11-18T10:42:37Z
department:
- _id: '241'
- _id: '153'
doi: 10.21741/9781644903131-308
intvolume: ' 41'
language:
- iso: eng
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: Innovative control system for straightening machines using sensor information
from downstream processes
type: conference
user_id: '41470'
volume: 41
year: '2024'
...
---
_id: '57178'
abstract:
- lang: eng
text: The incremental flow forming process is currently enhanced in research context
by special closed-loop property control concepts to increase the productivity
and to control the product properties making invisible property structures like
a magnetic barcode possible. However, it is preferred to establish property control
concepts on single roller machines instead of conventional machines with three
roller actuation due to the better machine accessibility. For those single roller
machines, rather poor surface qualities of flow formed workpieces were observed
in the past especially for hydraulic actuators. Thus, a new actuator closed-loop
position control concept is developed in this paper using model-based control
design methods and taking the flow forming forces as a load into account. The
novel closed-loop control is validated during workpiece production at the actual
single roller flow forming machine. An analysis of the manufactured workpieces
show that the surface quality is significantly enhanced by the new control to
a roughness level almost similar to conventional three roller flow forming. Thus,
a sincere added value to the flow forming process is offered by the novel actuator
closed-loop position control.
author:
- first_name: Lukas
full_name: Kersting, Lukas
last_name: Kersting
- first_name: Sebastian
full_name: Sander, Sebastian
last_name: Sander
- first_name: Bahman
full_name: Arian, Bahman
id: '36287'
last_name: Arian
- first_name: Julian
full_name: Rozo Vasquez, Julian
last_name: Rozo Vasquez
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
- first_name: Frank
full_name: Walther, Frank
last_name: Walther
citation:
ama: 'Kersting L, Sander S, Arian B, et al. Improving the flow forming process by
a novel closed-loop control. In: Materials Research Proceedings. Vol 41.
Materials Research Forum LLC; 2024. doi:10.21741/9781644903131-158'
apa: Kersting, L., Sander, S., Arian, B., Rozo Vasquez, J., Trächtler, A., Homberg,
W., & Walther, F. (2024). Improving the flow forming process by a novel closed-loop
control. Materials Research Proceedings, 41. https://doi.org/10.21741/9781644903131-158
bibtex: '@inproceedings{Kersting_Sander_Arian_Rozo Vasquez_Trächtler_Homberg_Walther_2024,
title={Improving the flow forming process by a novel closed-loop control}, volume={41},
DOI={10.21741/9781644903131-158},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Kersting, Lukas and Sander, Sebastian and Arian, Bahman and Rozo
Vasquez, Julian and Trächtler, Ansgar and Homberg, Werner and Walther, Frank},
year={2024} }'
chicago: Kersting, Lukas, Sebastian Sander, Bahman Arian, Julian Rozo Vasquez, Ansgar
Trächtler, Werner Homberg, and Frank Walther. “Improving the Flow Forming Process
by a Novel Closed-Loop Control.” In Materials Research Proceedings, Vol.
41. Materials Research Forum LLC, 2024. https://doi.org/10.21741/9781644903131-158.
ieee: 'L. Kersting et al., “Improving the flow forming process by a novel
closed-loop control,” in Materials Research Proceedings, 2024, vol. 41,
doi: 10.21741/9781644903131-158.'
mla: Kersting, Lukas, et al. “Improving the Flow Forming Process by a Novel Closed-Loop
Control.” Materials Research Proceedings, vol. 41, Materials Research Forum
LLC, 2024, doi:10.21741/9781644903131-158.
short: 'L. Kersting, S. Sander, B. Arian, J. Rozo Vasquez, A. Trächtler, W. Homberg,
F. Walther, in: Materials Research Proceedings, Materials Research Forum LLC,
2024.'
date_created: 2024-11-18T10:11:24Z
date_updated: 2024-11-18T10:41:46Z
department:
- _id: '153'
- _id: '241'
- _id: '156'
doi: 10.21741/9781644903131-158
intvolume: ' 41'
language:
- iso: eng
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: Improving the flow forming process by a novel closed-loop control
type: conference
user_id: '41470'
volume: 41
year: '2024'
...
---
_id: '57183'
abstract:
- lang: eng
text: In multi-stage bending and straightening operations cross-stage and quantity-dependent
effects crucially affect the quality of the end product. Using punch-bending units
in combination with a mechatronic straightening device can improve the accuracy
and repeatability of product features remarkably well. In this work a concept
for an innovative hybrid model of a roll straightener in a multi-stage straightening
and multi-stage bending process is proposed. This model combines data-driven elements
with expert knowledge and aims to minimise residual errors of the roll straightener
to reliably decrease the risk of disadvantageous cross-stage and quantity-dependent
effects on a subsequent punch-bending process.
author:
- first_name: Henning
full_name: Peters, Henning
last_name: Peters
- first_name: Eugen
full_name: Djakow, Eugen
id: '7904'
last_name: Djakow
- first_name: Tim
full_name: Rostek, Tim
id: '3469'
last_name: Rostek
- first_name: Andreas
full_name: Mazur, Andreas
last_name: Mazur
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
- first_name: Barbara
full_name: Hammer, Barbara
last_name: Hammer
citation:
ama: 'Peters H, Djakow E, Rostek T, et al. Novel approach for data-driven modelling
of multi-stage straightening and bending processes. In: Materials Research
Proceedings. Vol 41. Materials Research Forum LLC; 2024. doi:10.21741/9781644903131-252'
apa: Peters, H., Djakow, E., Rostek, T., Mazur, A., Trächtler, A., Homberg, W.,
& Hammer, B. (2024). Novel approach for data-driven modelling of multi-stage
straightening and bending processes. Materials Research Proceedings, 41.
https://doi.org/10.21741/9781644903131-252
bibtex: '@inproceedings{Peters_Djakow_Rostek_Mazur_Trächtler_Homberg_Hammer_2024,
title={Novel approach for data-driven modelling of multi-stage straightening and
bending processes}, volume={41}, DOI={10.21741/9781644903131-252},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Peters, Henning and Djakow, Eugen and Rostek, Tim and Mazur, Andreas
and Trächtler, Ansgar and Homberg, Werner and Hammer, Barbara}, year={2024} }'
chicago: Peters, Henning, Eugen Djakow, Tim Rostek, Andreas Mazur, Ansgar Trächtler,
Werner Homberg, and Barbara Hammer. “Novel Approach for Data-Driven Modelling
of Multi-Stage Straightening and Bending Processes.” In Materials Research
Proceedings, Vol. 41. Materials Research Forum LLC, 2024. https://doi.org/10.21741/9781644903131-252.
ieee: 'H. Peters et al., “Novel approach for data-driven modelling of multi-stage
straightening and bending processes,” in Materials Research Proceedings,
2024, vol. 41, doi: 10.21741/9781644903131-252.'
mla: Peters, Henning, et al. “Novel Approach for Data-Driven Modelling of Multi-Stage
Straightening and Bending Processes.” Materials Research Proceedings, vol.
41, Materials Research Forum LLC, 2024, doi:10.21741/9781644903131-252.
short: 'H. Peters, E. Djakow, T. Rostek, A. Mazur, A. Trächtler, W. Homberg, B.
Hammer, in: Materials Research Proceedings, Materials Research Forum LLC, 2024.'
date_created: 2024-11-18T10:15:37Z
date_updated: 2024-11-18T10:40:50Z
department:
- _id: '153'
- _id: '241'
- _id: '156'
doi: 10.21741/9781644903131-252
intvolume: ' 41'
language:
- iso: eng
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: Novel approach for data-driven modelling of multi-stage straightening and bending
processes
type: conference
user_id: '41470'
volume: 41
year: '2024'
...
---
_id: '57171'
abstract:
- lang: eng
text: In manufacturing, property control ensures efficient part production. However,
in reverse flow forming, current practices focus on geometry control rather than
property control. To address the complexity of the process and tool machine interaction,
process control is crucial for defined component properties. This study focuses
on controlling local α’ martensite content in reverse flow forming of seamless
AISI 304L steel tubes. Strategies and systems are presented to influence α’ martensite
content, creating unique microstructure profiles for 1D and 2D Gradings, with
tangible component outcomes.
author:
- first_name: Bahman
full_name: Arian, Bahman
id: '36287'
last_name: Arian
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
- first_name: Lukas
full_name: Kersting, Lukas
last_name: Kersting
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
- first_name: Julian
full_name: Rozo Vasquez, Julian
last_name: Rozo Vasquez
- first_name: Frank
full_name: Walther, Frank
last_name: Walther
citation:
ama: 'Arian B, Homberg W, Kersting L, Trächtler A, Rozo Vasquez J, Walther F. Thermomechanical
reverse flow forming of AISI 304L. In: Materials Research Proceedings.
Vol 41. Materials Research Forum LLC; 2024. doi:10.21741/9781644903131-151'
apa: Arian, B., Homberg, W., Kersting, L., Trächtler, A., Rozo Vasquez, J., &
Walther, F. (2024). Thermomechanical reverse flow forming of AISI 304L. Materials
Research Proceedings, 41. https://doi.org/10.21741/9781644903131-151
bibtex: '@inproceedings{Arian_Homberg_Kersting_Trächtler_Rozo Vasquez_Walther_2024,
title={Thermomechanical reverse flow forming of AISI 304L}, volume={41}, DOI={10.21741/9781644903131-151},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Arian, Bahman and Homberg, Werner and Kersting, Lukas and Trächtler,
Ansgar and Rozo Vasquez, Julian and Walther, Frank}, year={2024} }'
chicago: Arian, Bahman, Werner Homberg, Lukas Kersting, Ansgar Trächtler, Julian
Rozo Vasquez, and Frank Walther. “Thermomechanical Reverse Flow Forming of AISI
304L.” In Materials Research Proceedings, Vol. 41. Materials Research Forum
LLC, 2024. https://doi.org/10.21741/9781644903131-151.
ieee: 'B. Arian, W. Homberg, L. Kersting, A. Trächtler, J. Rozo Vasquez, and F.
Walther, “Thermomechanical reverse flow forming of AISI 304L,” in Materials
Research Proceedings, 2024, vol. 41, doi: 10.21741/9781644903131-151.'
mla: Arian, Bahman, et al. “Thermomechanical Reverse Flow Forming of AISI 304L.”
Materials Research Proceedings, vol. 41, Materials Research Forum LLC,
2024, doi:10.21741/9781644903131-151.
short: 'B. Arian, W. Homberg, L. Kersting, A. Trächtler, J. Rozo Vasquez, F. Walther,
in: Materials Research Proceedings, Materials Research Forum LLC, 2024.'
date_created: 2024-11-18T10:02:38Z
date_updated: 2024-11-18T10:42:49Z
department:
- _id: '241'
- _id: '153'
- _id: '156'
doi: 10.21741/9781644903131-151
intvolume: ' 41'
language:
- iso: eng
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: Thermomechanical reverse flow forming of AISI 304L
type: conference
user_id: '41470'
volume: 41
year: '2024'
...
---
_id: '57177'
author:
- first_name: Julien
full_name: Jahneke, Julien
last_name: Jahneke
- first_name: Udo
full_name: Nolte, Udo
last_name: Nolte
- first_name: Mark
full_name: Henkenjohann, Mark
last_name: Henkenjohann
- first_name: Tobias
full_name: Seidenberg, Tobias
last_name: Seidenberg
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: 'Jahneke J, Nolte U, Henkenjohann M, Seidenberg T, Henke C, Trächtler A. Development
and Implementation of a Modular Interface for a DroneCAN Communication Bus. In:
2024 IEEE Aerospace Conference. IEEE; 2024. doi:10.1109/aero58975.2024.10521247'
apa: Jahneke, J., Nolte, U., Henkenjohann, M., Seidenberg, T., Henke, C., &
Trächtler, A. (2024). Development and Implementation of a Modular Interface for
a DroneCAN Communication Bus. 2024 IEEE Aerospace Conference. https://doi.org/10.1109/aero58975.2024.10521247
bibtex: '@inproceedings{Jahneke_Nolte_Henkenjohann_Seidenberg_Henke_Trächtler_2024,
title={Development and Implementation of a Modular Interface for a DroneCAN Communication
Bus}, DOI={10.1109/aero58975.2024.10521247},
booktitle={2024 IEEE Aerospace Conference}, publisher={IEEE}, author={Jahneke,
Julien and Nolte, Udo and Henkenjohann, Mark and Seidenberg, Tobias and Henke,
Christian and Trächtler, Ansgar}, year={2024} }'
chicago: Jahneke, Julien, Udo Nolte, Mark Henkenjohann, Tobias Seidenberg, Christian
Henke, and Ansgar Trächtler. “Development and Implementation of a Modular Interface
for a DroneCAN Communication Bus.” In 2024 IEEE Aerospace Conference. IEEE,
2024. https://doi.org/10.1109/aero58975.2024.10521247.
ieee: 'J. Jahneke, U. Nolte, M. Henkenjohann, T. Seidenberg, C. Henke, and A. Trächtler,
“Development and Implementation of a Modular Interface for a DroneCAN Communication
Bus,” 2024, doi: 10.1109/aero58975.2024.10521247.'
mla: Jahneke, Julien, et al. “Development and Implementation of a Modular Interface
for a DroneCAN Communication Bus.” 2024 IEEE Aerospace Conference, IEEE,
2024, doi:10.1109/aero58975.2024.10521247.
short: 'J. Jahneke, U. Nolte, M. Henkenjohann, T. Seidenberg, C. Henke, A. Trächtler,
in: 2024 IEEE Aerospace Conference, IEEE, 2024.'
date_created: 2024-11-18T10:10:45Z
date_updated: 2024-11-18T10:42:01Z
department:
- _id: '241'
- _id: '153'
doi: 10.1109/aero58975.2024.10521247
language:
- iso: eng
publication: 2024 IEEE Aerospace Conference
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: Development and Implementation of a Modular Interface for a DroneCAN Communication
Bus
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57180'
author:
- first_name: Cederic
full_name: Lenz, Cederic
last_name: Lenz
- first_name: Maximilian
full_name: Bause, Maximilian
id: '52175'
last_name: Bause
- first_name: Christian
full_name: Henke, Christian
last_name: Henke
- first_name: Ansgar
full_name: Trächtler, Ansgar
id: '552'
last_name: Trächtler
citation:
ama: 'Lenz C, Bause M, Henke C, Trächtler A. Boosting Low Data PINN Robustness with
Transfer Learning*. In: 2024 International Conference on Advanced Robotics
and Mechatronics (ICARM). IEEE; 2024. doi:10.1109/icarm62033.2024.10715896'
apa: Lenz, C., Bause, M., Henke, C., & Trächtler, A. (2024). Boosting Low Data
PINN Robustness with Transfer Learning*. 2024 International Conference on Advanced
Robotics and Mechatronics (ICARM). https://doi.org/10.1109/icarm62033.2024.10715896
bibtex: '@inproceedings{Lenz_Bause_Henke_Trächtler_2024, title={Boosting Low Data
PINN Robustness with Transfer Learning*}, DOI={10.1109/icarm62033.2024.10715896},
booktitle={2024 International Conference on Advanced Robotics and Mechatronics
(ICARM)}, publisher={IEEE}, author={Lenz, Cederic and Bause, Maximilian and Henke,
Christian and Trächtler, Ansgar}, year={2024} }'
chicago: Lenz, Cederic, Maximilian Bause, Christian Henke, and Ansgar Trächtler.
“Boosting Low Data PINN Robustness with Transfer Learning*.” In 2024 International
Conference on Advanced Robotics and Mechatronics (ICARM). IEEE, 2024. https://doi.org/10.1109/icarm62033.2024.10715896.
ieee: 'C. Lenz, M. Bause, C. Henke, and A. Trächtler, “Boosting Low Data PINN Robustness
with Transfer Learning*,” 2024, doi: 10.1109/icarm62033.2024.10715896.'
mla: Lenz, Cederic, et al. “Boosting Low Data PINN Robustness with Transfer Learning*.”
2024 International Conference on Advanced Robotics and Mechatronics (ICARM),
IEEE, 2024, doi:10.1109/icarm62033.2024.10715896.
short: 'C. Lenz, M. Bause, C. Henke, A. Trächtler, in: 2024 International Conference
on Advanced Robotics and Mechatronics (ICARM), IEEE, 2024.'
date_created: 2024-11-18T10:14:14Z
date_updated: 2024-11-18T10:41:11Z
department:
- _id: '153'
- _id: '241'
doi: 10.1109/icarm62033.2024.10715896
language:
- iso: eng
publication: 2024 International Conference on Advanced Robotics and Mechatronics (ICARM)
publication_status: published
publisher: IEEE
quality_controlled: '1'
status: public
title: Boosting Low Data PINN Robustness with Transfer Learning*
type: conference
user_id: '41470'
year: '2024'
...
---
_id: '57192'
author:
- first_name: Christoph
full_name: Bürgel, Christoph
id: '58448'
last_name: Bürgel
- first_name: Dirk
full_name: Siepmann, Dirk
last_name: Siepmann
citation:
ama: 'Bürgel C, Siepmann D. Grammatik des gesprochenen und geschriebenen Französisch:
Adverbiale, Fürwörter und Verneinung. Vol 4. Amazon; 2024.'
apa: 'Bürgel, C., & Siepmann, D. (2024). Grammatik des gesprochenen und geschriebenen
Französisch: Adverbiale, Fürwörter und Verneinung (Vol. 4). Amazon.'
bibtex: '@book{Bürgel_Siepmann_2024, place={Leipzig}, title={Grammatik des gesprochenen
und geschriebenen Französisch: Adverbiale, Fürwörter und Verneinung}, volume={4},
publisher={Amazon}, author={Bürgel, Christoph and Siepmann, Dirk}, year={2024}
}'
chicago: 'Bürgel, Christoph, and Dirk Siepmann. Grammatik des gesprochenen und
geschriebenen Französisch: Adverbiale, Fürwörter und Verneinung. Vol. 4. Leipzig:
Amazon, 2024.'
ieee: 'C. Bürgel and D. Siepmann, Grammatik des gesprochenen und geschriebenen
Französisch: Adverbiale, Fürwörter und Verneinung, vol. 4. Leipzig: Amazon,
2024.'
mla: 'Bürgel, Christoph, and Dirk Siepmann. Grammatik des gesprochenen und geschriebenen
Französisch: Adverbiale, Fürwörter und Verneinung. Amazon, 2024.'
short: 'C. Bürgel, D. Siepmann, Grammatik des gesprochenen und geschriebenen Französisch:
Adverbiale, Fürwörter und Verneinung, Amazon, Leipzig, 2024.'
date_created: 2024-11-18T11:03:03Z
date_updated: 2024-11-18T11:24:13Z
department:
- _id: '491'
intvolume: ' 4'
language:
- iso: ger
place: Leipzig
publication_status: published
publisher: Amazon
status: public
title: 'Grammatik des gesprochenen und geschriebenen Französisch: Adverbiale, Fürwörter
und Verneinung'
type: book
user_id: '71124'
volume: 4
year: '2024'
...
---
_id: '56137'
abstract:
- lang: eng
text: "Many Android applications collect data from users. The European Union's General
Data Protection Regulation (GDPR) requires vendors to faithfully disclose which
data their apps collect. This task is complicated because many apps use third-party
code for which the same information is not readily available. Hence we ask: how
accurately do current Android apps fulfill these requirements?\r\nIn this work,
we first expose a multi-layered definition of privacy-related data to correctly
report data collection in Android apps. We further create a dataset of privacy-sensitive
data classes that may be used as input by an Android app. This dataset takes into
account data collected both through the user interface and system APIs.\r\nWe
manually examine the data safety sections of 70 Android apps to observe how data
collection is reported, identifying instances of over- and under-reporting. Additionally,
we develop a prototype to statically extract and label privacy-related data collected
via app source code, user interfaces, and permissions. Comparing the prototype's
results with the data safety sections of 20 apps reveals reporting discrepancies.
Using the results from two Messaging and Social Media apps (Signal and Instagram),
we discuss how app developers under-report and over-report data collection, respectively,
and identify inaccurately reported data categories.\r\nOur results show that app
developers struggle to accurately report data collection, either due to Google's
abstract definition of collected data or insufficient existing tool support. "
author:
- first_name: Mugdha
full_name: Khedkar, Mugdha
id: '88024'
last_name: Khedkar
- first_name: Ambuj Kumar
full_name: Mondal, Ambuj Kumar
last_name: Mondal
- first_name: Eric
full_name: Bodden, Eric
id: '59256'
last_name: Bodden
orcid: 0000-0003-3470-3647
citation:
ama: 'Khedkar M, Mondal AK, Bodden E. Do Android App Developers Accurately Report
Collection of Privacy-Related Data? In: In Proceedings of the 39th IEEE/ACM
International Conference on Automated Software Engineering Workshops (ASEW ’24).
; 2024. doi:10.1145/3691621.3694949'
apa: Khedkar, M., Mondal, A. K., & Bodden, E. (2024). Do Android App Developers
Accurately Report Collection of Privacy-Related Data? In Proceedings of the
39th IEEE/ACM International Conference on Automated Software Engineering Workshops
(ASEW ’24). 39th IEEE/ACM International Conference on Automated Software Engineering
(ASE 2024), Sacramento, California. https://doi.org/10.1145/3691621.3694949
bibtex: '@inproceedings{Khedkar_Mondal_Bodden_2024, title={Do Android App Developers
Accurately Report Collection of Privacy-Related Data?}, DOI={10.1145/3691621.3694949},
booktitle={In Proceedings of the 39th IEEE/ACM International Conference on Automated
Software Engineering Workshops (ASEW ’24)}, author={Khedkar, Mugdha and Mondal,
Ambuj Kumar and Bodden, Eric}, year={2024} }'
chicago: Khedkar, Mugdha, Ambuj Kumar Mondal, and Eric Bodden. “Do Android App Developers
Accurately Report Collection of Privacy-Related Data?” In In Proceedings of
the 39th IEEE/ACM International Conference on Automated Software Engineering Workshops
(ASEW ’24), 2024. https://doi.org/10.1145/3691621.3694949.
ieee: 'M. Khedkar, A. K. Mondal, and E. Bodden, “Do Android App Developers Accurately
Report Collection of Privacy-Related Data?,” presented at the 39th IEEE/ACM International
Conference on Automated Software Engineering (ASE 2024), Sacramento, California,
2024, doi: 10.1145/3691621.3694949.'
mla: Khedkar, Mugdha, et al. “Do Android App Developers Accurately Report Collection
of Privacy-Related Data?” In Proceedings of the 39th IEEE/ACM International
Conference on Automated Software Engineering Workshops (ASEW ’24), 2024, doi:10.1145/3691621.3694949.
short: 'M. Khedkar, A.K. Mondal, E. Bodden, in: In Proceedings of the 39th IEEE/ACM
International Conference on Automated Software Engineering Workshops (ASEW ’24),
2024.'
conference:
end_date: 2024-11-01
location: Sacramento, California
name: 39th IEEE/ACM International Conference on Automated Software Engineering (ASE
2024)
start_date: 2024-10-27
date_created: 2024-09-16T08:50:54Z
date_updated: 2024-11-18T13:19:51Z
ddc:
- '000'
department:
- _id: '76'
doi: 10.1145/3691621.3694949
external_id:
arxiv:
- '2409.04167'
file:
- access_level: closed
content_type: application/pdf
creator: khedkarm
date_created: 2024-09-16T08:49:42Z
date_updated: 2024-09-16T08:49:42Z
file_id: '56138'
file_name: 2409.04167v1.pdf
file_size: 1270058
relation: main_file
success: 1
file_date_updated: 2024-09-16T08:49:42Z
has_accepted_license: '1'
language:
- iso: eng
publication: In Proceedings of the 39th IEEE/ACM International Conference on Automated
Software Engineering Workshops (ASEW ’24)
status: public
title: Do Android App Developers Accurately Report Collection of Privacy-Related Data?
type: conference
user_id: '88024'
year: '2024'
...
---
_id: '53665'
author:
- first_name: Denis
full_name: Tissen, Denis
last_name: Tissen
- first_name: Ingrid
full_name: Wiederkehr, Ingrid
last_name: Wiederkehr
- first_name: Christian
full_name: Koldewey, Christian
last_name: Koldewey
- first_name: Roman
full_name: Dumitrescu, Roman
last_name: Dumitrescu
citation:
ama: 'Tissen D, Wiederkehr I, Koldewey C, Dumitrescu R. Exploring data-driven model-based
systems engineering: a systematic literature review. In: 2023 IEEE International
Conference on Technology Management, Operations and Decisions (ICTMOD). IEEE;
2024. doi:10.1109/ictmod59086.2023.10438129'
apa: 'Tissen, D., Wiederkehr, I., Koldewey, C., & Dumitrescu, R. (2024). Exploring
data-driven model-based systems engineering: a systematic literature review. 2023
IEEE International Conference on Technology Management, Operations and Decisions
(ICTMOD). https://doi.org/10.1109/ictmod59086.2023.10438129'
bibtex: '@inproceedings{Tissen_Wiederkehr_Koldewey_Dumitrescu_2024, title={Exploring
data-driven model-based systems engineering: a systematic literature review},
DOI={10.1109/ictmod59086.2023.10438129},
booktitle={2023 IEEE International Conference on Technology Management, Operations
and Decisions (ICTMOD)}, publisher={IEEE}, author={Tissen, Denis and Wiederkehr,
Ingrid and Koldewey, Christian and Dumitrescu, Roman}, year={2024} }'
chicago: 'Tissen, Denis, Ingrid Wiederkehr, Christian Koldewey, and Roman Dumitrescu.
“Exploring Data-Driven Model-Based Systems Engineering: A Systematic Literature
Review.” In 2023 IEEE International Conference on Technology Management, Operations
and Decisions (ICTMOD). IEEE, 2024. https://doi.org/10.1109/ictmod59086.2023.10438129.'
ieee: 'D. Tissen, I. Wiederkehr, C. Koldewey, and R. Dumitrescu, “Exploring data-driven
model-based systems engineering: a systematic literature review,” 2024, doi: 10.1109/ictmod59086.2023.10438129.'
mla: 'Tissen, Denis, et al. “Exploring Data-Driven Model-Based Systems Engineering:
A Systematic Literature Review.” 2023 IEEE International Conference on Technology
Management, Operations and Decisions (ICTMOD), IEEE, 2024, doi:10.1109/ictmod59086.2023.10438129.'
short: 'D. Tissen, I. Wiederkehr, C. Koldewey, R. Dumitrescu, in: 2023 IEEE International
Conference on Technology Management, Operations and Decisions (ICTMOD), IEEE,
2024.'
date_created: 2024-04-26T08:04:10Z
date_updated: 2024-11-18T12:18:15Z
doi: 10.1109/ictmod59086.2023.10438129
language:
- iso: eng
publication: 2023 IEEE International Conference on Technology Management, Operations
and Decisions (ICTMOD)
publication_status: published
publisher: IEEE
status: public
title: 'Exploring data-driven model-based systems engineering: a systematic literature
review'
type: conference
user_id: '44458'
year: '2024'
...
---
_id: '53622'
abstract:
- lang: eng
text: In K-12 computing education, there is a need to identify and teach
concepts that are relevant to understanding machine learning technologies. Studies
of teaching approaches often evaluate whether students have learned the concepts.
However, scant research has examined whether such concepts support understanding
digital artefacts from everyday life and developing agency in a digital world.
This paper presents a qualitative study that explores students’ perspectives on
the relevance of learning concepts of data-driven technologies for navigating
the digital world. The underlying approach of the study is data awareness, which
aims to support students in understanding and reflecting on such technologies
to develop agency in a data-driven world. This approach teaches students an explanatory
model encompassing several concepts of the role of data in data-driven technologies.
We developed an intervention and conducted retrospective interviews with students.
Findings from the analysis of the interviews indicate that students can analyse
and understand data-driven technologies from their everyday lives according to
the central role of data. In addition, students’ answers revealed four areas of
how learning about data-driven technologies becomes relevant to them. The paper
concludes with a preliminary model suggesting how computing education can make
concepts of data-driven technologies meaningful for students to understand and
navigate the digital world.
author:
- first_name: Lukas
full_name: Höper, Lukas
id: '58041'
last_name: Höper
- first_name: Carsten
full_name: Schulte, Carsten
id: '60311'
last_name: Schulte
citation:
ama: 'Höper L, Schulte C. Empowering Students for the Data-Driven World: A Qualitative
Study of the Relevance of Learning about Data-Driven Technologies. Informatics
in Education. Published online 2024. doi:10.15388/infedu.2024.19'
apa: 'Höper, L., & Schulte, C. (2024). Empowering Students for the Data-Driven
World: A Qualitative Study of the Relevance of Learning about Data-Driven Technologies.
Informatics in Education. https://doi.org/10.15388/infedu.2024.19'
bibtex: '@article{Höper_Schulte_2024, title={Empowering Students for the Data-Driven
World: A Qualitative Study of the Relevance of Learning about Data-Driven Technologies},
DOI={10.15388/infedu.2024.19},
journal={Informatics in Education}, publisher={Vilnius University Press}, author={Höper,
Lukas and Schulte, Carsten}, year={2024} }'
chicago: 'Höper, Lukas, and Carsten Schulte. “Empowering Students for the Data-Driven
World: A Qualitative Study of the Relevance of Learning about Data-Driven Technologies.”
Informatics in Education, 2024. https://doi.org/10.15388/infedu.2024.19.'
ieee: 'L. Höper and C. Schulte, “Empowering Students for the Data-Driven World:
A Qualitative Study of the Relevance of Learning about Data-Driven Technologies,”
Informatics in Education, 2024, doi: 10.15388/infedu.2024.19.'
mla: 'Höper, Lukas, and Carsten Schulte. “Empowering Students for the Data-Driven
World: A Qualitative Study of the Relevance of Learning about Data-Driven Technologies.”
Informatics in Education, Vilnius University Press, 2024, doi:10.15388/infedu.2024.19.'
short: L. Höper, C. Schulte, Informatics in Education (2024).
date_created: 2024-04-23T09:26:08Z
date_updated: 2024-11-19T07:24:30Z
ddc:
- '000'
- '370'
department:
- _id: '67'
doi: 10.15388/infedu.2024.19
file:
- access_level: closed
content_type: application/pdf
creator: hoeper
date_created: 2024-11-19T07:24:14Z
date_updated: 2024-11-19T07:24:14Z
file_id: '57214'
file_name: infedu.2024.19.pdf
file_size: 2343612
relation: main_file
success: 1
file_date_updated: 2024-11-19T07:24:14Z
has_accepted_license: '1'
keyword:
- Computer Science Applications
- Communication
- Education
- General Engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://infedu.vu.lt/journal/INFEDU/article/784/info
oa: '1'
publication: Informatics in Education
publication_identifier:
issn:
- 1648-5831
- 2335-8971
publication_status: published
publisher: Vilnius University Press
quality_controlled: '1'
status: public
title: 'Empowering Students for the Data-Driven World: A Qualitative Study of the
Relevance of Learning about Data-Driven Technologies'
type: journal_article
user_id: '58041'
year: '2024'
...