---
_id: '63660'
abstract:
- lang: eng
text: Adiabatic demagnetization refrigeration (ADR) is regaining relevance
for refrigeration to temperatures below 1 K as global helium-3 supply is increasingly
strained. While ADR at these temperatures is long established with paramagnetic
hydrated salts, more recently, frustrated rare-earth oxides were found to offer
higher entropy densities and practical advantages, since they do not degrade under
heating or evacuation. We report structural, magnetic, and thermodynamic properties
of the rare-earth borates Ba3XB9O18 and Ba3XB3O9 with X = (Yb, Gd). Except for
Ba3GdB9O18, which orders at 108 mK, the three other materials remain paramagnetic
down to their lowest measured temperatures. ADR performance starting at 2 K in
a field of 5 T is analyzed and compared to literature.
article_number: '290'
author:
- first_name: Marvin
full_name: Klinger, Marvin
last_name: Klinger
- first_name: Tim
full_name: Treu, Tim
last_name: Treu
- first_name: Felix
full_name: Kreisberger, Felix
last_name: Kreisberger
- first_name: Christian
full_name: Heil, Christian
id: '120539'
last_name: Heil
orcid: 0009-0006-4365-5607
- first_name: Anna
full_name: Klinger, Anna
last_name: Klinger
- first_name: Anton
full_name: Jesche, Anton
last_name: Jesche
- first_name: Philipp
full_name: Gegenwart, Philipp
last_name: Gegenwart
citation:
ama: Klinger M, Treu T, Kreisberger F, et al. Sub-1 K Adiabatic Demagnetization
Refrigeration with Rare-Earth Borates Ba3XB9O18 and Ba3XB3O9, X = (Yb, Gd). Applied
Sciences. 2025;16(1). doi:10.3390/app16010290
apa: Klinger, M., Treu, T., Kreisberger, F., Heil, C., Klinger, A., Jesche, A.,
& Gegenwart, P. (2025). Sub-1 K Adiabatic Demagnetization Refrigeration with
Rare-Earth Borates Ba3XB9O18 and Ba3XB3O9, X = (Yb, Gd). Applied Sciences,
16(1), Article 290. https://doi.org/10.3390/app16010290
bibtex: '@article{Klinger_Treu_Kreisberger_Heil_Klinger_Jesche_Gegenwart_2025, title={Sub-1
K Adiabatic Demagnetization Refrigeration with Rare-Earth Borates Ba3XB9O18 and
Ba3XB3O9, X = (Yb, Gd)}, volume={16}, DOI={10.3390/app16010290},
number={1290}, journal={Applied Sciences}, publisher={MDPI AG}, author={Klinger,
Marvin and Treu, Tim and Kreisberger, Felix and Heil, Christian and Klinger, Anna
and Jesche, Anton and Gegenwart, Philipp}, year={2025} }'
chicago: Klinger, Marvin, Tim Treu, Felix Kreisberger, Christian Heil, Anna Klinger,
Anton Jesche, and Philipp Gegenwart. “Sub-1 K Adiabatic Demagnetization Refrigeration
with Rare-Earth Borates Ba3XB9O18 and Ba3XB3O9, X = (Yb, Gd).” Applied Sciences
16, no. 1 (2025). https://doi.org/10.3390/app16010290.
ieee: 'M. Klinger et al., “Sub-1 K Adiabatic Demagnetization Refrigeration
with Rare-Earth Borates Ba3XB9O18 and Ba3XB3O9, X = (Yb, Gd),” Applied Sciences,
vol. 16, no. 1, Art. no. 290, 2025, doi: 10.3390/app16010290.'
mla: Klinger, Marvin, et al. “Sub-1 K Adiabatic Demagnetization Refrigeration with
Rare-Earth Borates Ba3XB9O18 and Ba3XB3O9, X = (Yb, Gd).” Applied Sciences,
vol. 16, no. 1, 290, MDPI AG, 2025, doi:10.3390/app16010290.
short: M. Klinger, T. Treu, F. Kreisberger, C. Heil, A. Klinger, A. Jesche, P. Gegenwart,
Applied Sciences 16 (2025).
date_created: 2026-01-19T16:01:22Z
date_updated: 2026-01-19T16:03:37Z
doi: 10.3390/app16010290
intvolume: ' 16'
issue: '1'
language:
- iso: eng
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publication_status: published
publisher: MDPI AG
status: public
title: Sub-1 K Adiabatic Demagnetization Refrigeration with Rare-Earth Borates Ba3XB9O18
and Ba3XB3O9, X = (Yb, Gd)
type: journal_article
user_id: '120539'
volume: 16
year: '2025'
...
---
_id: '63662'
abstract:
- lang: eng
text: The accurate prediction of crack initiation and propagation is essential for
assessing the structural integrity of mechanically joined components and other
complex assemblies. To overcome the limitations of existing finite element tools,
a modular Python framework has been developed to automate three-dimensional crack
growth simulations. The program combines geometric reconstruction, adaptive remeshing,
and the numerical evaluation of fracture mechanics parameters within a single,
fully automated workflow. The framework builds on open-source components and remains
solver-independent, enabling straightforward integration with commercial or research
finite element codes. A dedicated sequence of modules performs all required steps,
from mesh separation and crack insertion to local submodeling, stress and displacement
mapping, and iterative crack-front update, without manual interaction. The methodology
was verified using a mini-compact tension (Mini-CT) specimen as a benchmark case.
The numerical results demonstrate the accurate reproduction of stress intensity
factors and energy release rates while achieving high computational efficiency
through localized refinement. The developed approach provides a robust basis for
crack growth simulations of geometrically complex or residual stress-affected
structures. Its high degree of automation and flexibility makes it particularly
suited for analyzing cracks in clinched and riveted joints, supporting the predictive
design and durability assessment of joined lightweight structures.
article_number: '384'
author:
- first_name: Sven
full_name: Krome, Sven
id: '57245'
last_name: Krome
- first_name: Tobias
full_name: Duffe, Tobias
id: '41322'
last_name: Duffe
- first_name: Gunter
full_name: Kullmer, Gunter
id: '291'
last_name: Kullmer
- first_name: Britta
full_name: Schramm, Britta
id: '4668'
last_name: Schramm
- first_name: Richard
full_name: Ostwald, Richard
id: '106876'
last_name: Ostwald
orcid: 0000-0003-2147-8444
citation:
ama: Krome S, Duffe T, Kullmer G, Schramm B, Ostwald R. Validation and Verification
of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D. Applied
Sciences. 2025;16(1). doi:10.3390/app16010384
apa: Krome, S., Duffe, T., Kullmer, G., Schramm, B., & Ostwald, R. (2025). Validation
and Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D.
Applied Sciences, 16(1), Article 384. https://doi.org/10.3390/app16010384
bibtex: '@article{Krome_Duffe_Kullmer_Schramm_Ostwald_2025, title={Validation and
Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D},
volume={16}, DOI={10.3390/app16010384},
number={1384}, journal={Applied Sciences}, publisher={MDPI AG}, author={Krome,
Sven and Duffe, Tobias and Kullmer, Gunter and Schramm, Britta and Ostwald, Richard},
year={2025} }'
chicago: Krome, Sven, Tobias Duffe, Gunter Kullmer, Britta Schramm, and Richard
Ostwald. “Validation and Verification of Novel Three-Dimensional Crack Growth
Simulation Software GmshCrack3D.” Applied Sciences 16, no. 1 (2025). https://doi.org/10.3390/app16010384.
ieee: 'S. Krome, T. Duffe, G. Kullmer, B. Schramm, and R. Ostwald, “Validation and
Verification of Novel Three-Dimensional Crack Growth Simulation Software GmshCrack3D,”
Applied Sciences, vol. 16, no. 1, Art. no. 384, 2025, doi: 10.3390/app16010384.'
mla: Krome, Sven, et al. “Validation and Verification of Novel Three-Dimensional
Crack Growth Simulation Software GmshCrack3D.” Applied Sciences, vol. 16,
no. 1, 384, MDPI AG, 2025, doi:10.3390/app16010384.
short: S. Krome, T. Duffe, G. Kullmer, B. Schramm, R. Ostwald, Applied Sciences
16 (2025).
date_created: 2026-01-20T08:47:40Z
date_updated: 2026-05-12T12:46:22Z
department:
- _id: '9'
- _id: '952'
- _id: '321'
doi: 10.3390/app16010384
intvolume: ' 16'
issue: '1'
language:
- iso: eng
project:
- _id: '132'
name: TRR 285 - Project Area B
- _id: '143'
name: TRR 285 - Subproject B04
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Validation and Verification of Novel Three-Dimensional Crack Growth Simulation
Software GmshCrack3D
type: journal_article
user_id: '7850'
volume: 16
year: '2025'
...
---
_id: '58309'
abstract:
- lang: eng
text: 'This study evaluates four widely used fracture simulation methods,
comparing their computational expenses and implementation complexities within
the finite element (FE) framework when employed on heterogeneous solids. Fracture
methods considered encompass the intrinsic cohesive zone model (CZM) using zero-thickness
cohesive interface elements (CIEs), the standard phase-field fracture (SPFM) approach,
the cohesive phase-field fracture (CPFM) approach, and an innovative hybrid model.
The hybrid approach combines the CPFM fracture method with the CZM, specifically
applying the CZM within the interface zone. The finite element model studied is
characterized by three specific phases: inclusions, matrix, and the interface
zone. This case study serves as a potential template for meso- or micro-level
simulations involving a variety of composite materials. The thorough assessment
of these modeling techniques indicates that the CPFM approach stands out as the
most effective computational model, provided that the thickness of the interface
zone is not significantly smaller than that of the other phases. In materials
like concrete, which contain interfaces within their microstructure, the interface
thickness is notably small when compared to other phases. This leads to the hybrid
model standing as the most authentic finite element model, utilizing CIEs within
the interface to simulate interface debonding. A significant finding from this
investigation is that within the CPFM method, for a specific interface thickness,
convergence with the hybrid model can be observed. This suggests that the CPFM
fracture method could serve as a unified fracture approach for multiphase materials
when a specific interfacial thickness is used. In addition, this research provides
valuable insights that can advance efforts to fine-tune material microstructures.
An investigation of the influence of interfacial material properties, voids, and
the spatial arrangement of inclusions shows a pronounced effect of these parameters
on the fracture toughness of the material.'
article_number: '160'
author:
- first_name: Rasoul
full_name: Najafi Koopas, Rasoul
last_name: Najafi Koopas
- first_name: Shahed
full_name: Rezaei, Shahed
last_name: Rezaei
- first_name: Natalie
full_name: Rauter, Natalie
last_name: Rauter
- first_name: Richard
full_name: Ostwald, Richard
id: '106876'
last_name: Ostwald
- first_name: Rolf
full_name: Lammering, Rolf
last_name: Lammering
citation:
ama: 'Najafi Koopas R, Rezaei S, Rauter N, Ostwald R, Lammering R. Comparative Analysis
of Phase-Field and Intrinsic Cohesive Zone Models for Fracture Simulations in
Multiphase Materials with Interfaces: Investigation of the Influence of the Microstructure
on the Fracture Properties. Applied Sciences. 2024;15(1). doi:10.3390/app15010160'
apa: 'Najafi Koopas, R., Rezaei, S., Rauter, N., Ostwald, R., & Lammering, R.
(2024). Comparative Analysis of Phase-Field and Intrinsic Cohesive Zone Models
for Fracture Simulations in Multiphase Materials with Interfaces: Investigation
of the Influence of the Microstructure on the Fracture Properties. Applied
Sciences, 15(1), Article 160. https://doi.org/10.3390/app15010160'
bibtex: '@article{Najafi Koopas_Rezaei_Rauter_Ostwald_Lammering_2024, title={Comparative
Analysis of Phase-Field and Intrinsic Cohesive Zone Models for Fracture Simulations
in Multiphase Materials with Interfaces: Investigation of the Influence of the
Microstructure on the Fracture Properties}, volume={15}, DOI={10.3390/app15010160},
number={1160}, journal={Applied Sciences}, publisher={MDPI AG}, author={Najafi
Koopas, Rasoul and Rezaei, Shahed and Rauter, Natalie and Ostwald, Richard and
Lammering, Rolf}, year={2024} }'
chicago: 'Najafi Koopas, Rasoul, Shahed Rezaei, Natalie Rauter, Richard Ostwald,
and Rolf Lammering. “Comparative Analysis of Phase-Field and Intrinsic Cohesive
Zone Models for Fracture Simulations in Multiphase Materials with Interfaces:
Investigation of the Influence of the Microstructure on the Fracture Properties.”
Applied Sciences 15, no. 1 (2024). https://doi.org/10.3390/app15010160.'
ieee: 'R. Najafi Koopas, S. Rezaei, N. Rauter, R. Ostwald, and R. Lammering, “Comparative
Analysis of Phase-Field and Intrinsic Cohesive Zone Models for Fracture Simulations
in Multiphase Materials with Interfaces: Investigation of the Influence of the
Microstructure on the Fracture Properties,” Applied Sciences, vol. 15,
no. 1, Art. no. 160, 2024, doi: 10.3390/app15010160.'
mla: 'Najafi Koopas, Rasoul, et al. “Comparative Analysis of Phase-Field and Intrinsic
Cohesive Zone Models for Fracture Simulations in Multiphase Materials with Interfaces:
Investigation of the Influence of the Microstructure on the Fracture Properties.”
Applied Sciences, vol. 15, no. 1, 160, MDPI AG, 2024, doi:10.3390/app15010160.'
short: R. Najafi Koopas, S. Rezaei, N. Rauter, R. Ostwald, R. Lammering, Applied
Sciences 15 (2024).
date_created: 2025-01-21T13:48:05Z
date_updated: 2025-02-14T10:52:55Z
department:
- _id: '9'
- _id: '952'
- _id: '321'
doi: 10.3390/app15010160
intvolume: ' 15'
issue: '1'
language:
- iso: eng
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: 'Comparative Analysis of Phase-Field and Intrinsic Cohesive Zone Models for
Fracture Simulations in Multiphase Materials with Interfaces: Investigation of the
Influence of the Microstructure on the Fracture Properties'
type: journal_article
user_id: '85414'
volume: 15
year: '2024'
...
---
_id: '34223'
abstract:
- lang: eng
text: In this study, quasi-unidirectional continuous fiber reinforced thermoplastics
(CFRTs) are joined with metal sheets via cold formed cylindrical, elliptical and
polygonal pin structures which are directly pressed into the CFRT component after
local infrared heating. In comparison to already available studies, the unique
novelty is the use of non-rotational symmetric pin structures for the CFRT/metal
hybrid joining. Thus, a variation in the fiber orientation in the CFRT component
as well as a variation in the non-rotational symmetric pins’ orientation in relation
to the sample orientation is conducted. The created samples are consequently mechanically
tested via single lap shear experiments in a quasi-static state. Finally, the
failure behavior of the single lap shear samples is investigated with the help
of microscopic images and detailed photographs. In the single lap shear tests,
it could be shown that non-rotational symmetric pin structures lead to an increase
in maximum testing forces of up to 74% when compared to cylindrical pins. However,
when normalized to the pin foot print related joint strength, only one polygonal
pin variation showed increased joint strength in comparison to cylindrical pin
structures. The investigation of the failure behavior showed two distinct failure
modes. The first failure mode was failure of the CFRT component due to an exceedance
of the maximum bearing strength of the pin-hole leading to significant damage
in the CFRT component. The second failure mode was pin-deflection due to the applied
testing load and a subsequent pin extraction from the CFRT component resulting
in significantly less visible damage in the CFRT component. Generally, CFRT failure
is more likely with a fiber orientation of 0° in relation to the load direction
while pin extraction typically occurs with a fiber orientation of 90°. It is assumed
that for future investigations, pin structures with an undercutting shape that
creates an interlocking joint could counteract the tendency for pin-extraction
and consequently lead to increased maximum joint strengths.
article_number: '4962'
author:
- first_name: Julian
full_name: Popp, Julian
last_name: Popp
- first_name: David
full_name: Römisch, David
last_name: Römisch
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
- first_name: Dietmar
full_name: Drummer, Dietmar
last_name: Drummer
citation:
ama: Popp J, Römisch D, Merklein M, Drummer D. Joining of CFRT/Steel Hybrid Parts
via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures. Applied
Sciences. 2022;12(10). doi:10.3390/app12104962
apa: Popp, J., Römisch, D., Merklein, M., & Drummer, D. (2022). Joining of CFRT/Steel
Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures.
Applied Sciences, 12(10), Article 4962. https://doi.org/10.3390/app12104962
bibtex: '@article{Popp_Römisch_Merklein_Drummer_2022, title={Joining of CFRT/Steel
Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures},
volume={12}, DOI={10.3390/app12104962},
number={104962}, journal={Applied Sciences}, publisher={MDPI AG}, author={Popp,
Julian and Römisch, David and Merklein, Marion and Drummer, Dietmar}, year={2022}
}'
chicago: Popp, Julian, David Römisch, Marion Merklein, and Dietmar Drummer. “Joining
of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric
Pin Structures.” Applied Sciences 12, no. 10 (2022). https://doi.org/10.3390/app12104962.
ieee: 'J. Popp, D. Römisch, M. Merklein, and D. Drummer, “Joining of CFRT/Steel
Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational Symmetric Pin Structures,”
Applied Sciences, vol. 12, no. 10, Art. no. 4962, 2022, doi: 10.3390/app12104962.'
mla: Popp, Julian, et al. “Joining of CFRT/Steel Hybrid Parts via Direct Pressing
of Cold Formed Non-Rotational Symmetric Pin Structures.” Applied Sciences,
vol. 12, no. 10, 4962, MDPI AG, 2022, doi:10.3390/app12104962.
short: J. Popp, D. Römisch, M. Merklein, D. Drummer, Applied Sciences 12 (2022).
date_created: 2022-12-05T21:48:01Z
date_updated: 2022-12-05T21:49:30Z
doi: 10.3390/app12104962
intvolume: ' 12'
issue: '10'
keyword:
- Fluid Flow and Transfer Processes
- Computer Science Applications
- Process Chemistry and Technology
- General Engineering
- Instrumentation
- General Materials Science
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '145'
name: 'TRR 285 – C01: TRR 285 - Subproject C01'
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publication_status: published
publisher: MDPI AG
status: public
title: Joining of CFRT/Steel Hybrid Parts via Direct Pressing of Cold Formed Non-Rotational
Symmetric Pin Structures
type: journal_article
user_id: '7850'
volume: 12
year: '2022'
...
---
_id: '48878'
abstract:
- lang: eng
text: Due to the rise of continuous data-generating applications, analyzing data
streams has gained increasing attention over the past decades. A core research
area in stream data is stream classification, which categorizes or detects data
points within an evolving stream of observations. Areas of stream classification
are diverse\textemdash ranging, e.g., from monitoring sensor data to analyzing
a wide range of (social) media applications. Research in stream classification
is related to developing methods that adapt to the changing and potentially volatile
data stream. It focuses on individual aspects of the stream classification pipeline,
e.g., designing suitable algorithm architectures, an efficient train and test
procedure, or detecting so-called concept drifts. As a result of the many different
research questions and strands, the field is challenging to grasp, especially
for beginners. This survey explores, summarizes, and categorizes work within the
domain of stream classification and identifies core research threads over the
past few years. It is structured based on the stream classification process to
facilitate coordination within this complex topic, including common application
scenarios and benchmarking data sets. Thus, both newcomers to the field and experts
who want to widen their scope can gain (additional) insight into this research
area and find starting points and pointers to more in-depth literature on specific
issues and research directions in the field.
author:
- first_name: Lena
full_name: Clever, Lena
last_name: Clever
- first_name: Janina Susanne
full_name: Pohl, Janina Susanne
last_name: Pohl
- first_name: Jakob
full_name: Bossek, Jakob
id: '102979'
last_name: Bossek
orcid: 0000-0002-4121-4668
- first_name: Pascal
full_name: Kerschke, Pascal
last_name: Kerschke
- first_name: Heike
full_name: Trautmann, Heike
last_name: Trautmann
citation:
ama: 'Clever L, Pohl JS, Bossek J, Kerschke P, Trautmann H. Process-Oriented Stream
Classification Pipeline: A Literature Review. Applied Sciences. 2022;12(18):9094.
doi:10.3390/app12189094'
apa: 'Clever, L., Pohl, J. S., Bossek, J., Kerschke, P., & Trautmann, H. (2022).
Process-Oriented Stream Classification Pipeline: A Literature Review. Applied
Sciences, 12(18), 9094. https://doi.org/10.3390/app12189094'
bibtex: '@article{Clever_Pohl_Bossek_Kerschke_Trautmann_2022, title={Process-Oriented
Stream Classification Pipeline: A Literature Review}, volume={12}, DOI={10.3390/app12189094},
number={18}, journal={Applied Sciences}, publisher={{Multidisciplinary Digital
Publishing Institute}}, author={Clever, Lena and Pohl, Janina Susanne and Bossek,
Jakob and Kerschke, Pascal and Trautmann, Heike}, year={2022}, pages={9094} }'
chicago: 'Clever, Lena, Janina Susanne Pohl, Jakob Bossek, Pascal Kerschke, and
Heike Trautmann. “Process-Oriented Stream Classification Pipeline: A Literature
Review.” Applied Sciences 12, no. 18 (2022): 9094. https://doi.org/10.3390/app12189094.'
ieee: 'L. Clever, J. S. Pohl, J. Bossek, P. Kerschke, and H. Trautmann, “Process-Oriented
Stream Classification Pipeline: A Literature Review,” Applied Sciences,
vol. 12, no. 18, p. 9094, 2022, doi: 10.3390/app12189094.'
mla: 'Clever, Lena, et al. “Process-Oriented Stream Classification Pipeline: A Literature
Review.” Applied Sciences, vol. 12, no. 18, {Multidisciplinary Digital
Publishing Institute}, 2022, p. 9094, doi:10.3390/app12189094.'
short: L. Clever, J.S. Pohl, J. Bossek, P. Kerschke, H. Trautmann, Applied Sciences
12 (2022) 9094.
date_created: 2023-11-14T15:58:57Z
date_updated: 2023-12-13T10:50:56Z
department:
- _id: '819'
doi: 10.3390/app12189094
intvolume: ' 12'
issue: '18'
keyword:
- big data
- data mining
- data stream analysis
- machine learning
- stream classification
- supervised learning
language:
- iso: eng
page: '9094'
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publisher: '{Multidisciplinary Digital Publishing Institute}'
status: public
title: 'Process-Oriented Stream Classification Pipeline: A Literature Review'
type: journal_article
user_id: '102979'
volume: 12
year: '2022'
...
---
_id: '34224'
abstract:
- lang: eng
text: Crack growth in structures depends on the cyclic loads applied on it, such
as mechanical, thermal and contact, as well as residual stresses, etc. To provide
an accurate simulation of crack growth in structures, it is of high importance
to integrate all kinds of loading situations in the simulations. Adapcrack3D is
a simulation program that can accurately predict the propagation of cracks in
real structures. However, until now, this three-dimensional program has only considered
mechanical loads and static thermal loads. Therefore, the features of Adapcrack3D
have been extended by including contact loading in crack growth simulations. The
numerical simulation of crack propagation with Adapcrack3D is generally carried
out using FE models of structures provided by the user. For simulating models
with contact loading situations, Adapcrack3D has been updated to work with FE
models containing multiple parts and necessary features such as coupling and surface
interactions. Because Adapcrack3D uses the submodel technique for fracture mechanical
evaluations, the architecture of the submodel is also modified to simulate models
with contact definitions between the crack surfaces. This paper discusses the
newly implemented attribute of the program with the help of illustrative examples.
The results confirm that the contact simulation in Adapcrack3D is a major step
in improving the functionality of the program.
article_number: '7557'
author:
- first_name: Tintu David
full_name: Joy, Tintu David
id: '30821'
last_name: Joy
- first_name: Deborah
full_name: Weiß, Deborah
id: '45673'
last_name: Weiß
- first_name: Britta
full_name: Schramm, Britta
id: '4668'
last_name: Schramm
- first_name: Gunter
full_name: Kullmer, Gunter
id: '291'
last_name: Kullmer
citation:
ama: Joy TD, Weiß D, Schramm B, Kullmer G. Further Development of 3D Crack Growth
Simulation Program to Include Contact Loading Situations. Applied Sciences.
2022;12(15). doi:10.3390/app12157557
apa: Joy, T. D., Weiß, D., Schramm, B., & Kullmer, G. (2022). Further Development
of 3D Crack Growth Simulation Program to Include Contact Loading Situations. Applied
Sciences, 12(15), Article 7557. https://doi.org/10.3390/app12157557
bibtex: '@article{Joy_Weiß_Schramm_Kullmer_2022, title={Further Development of 3D
Crack Growth Simulation Program to Include Contact Loading Situations}, volume={12},
DOI={10.3390/app12157557}, number={157557},
journal={Applied Sciences}, publisher={MDPI AG}, author={Joy, Tintu David and
Weiß, Deborah and Schramm, Britta and Kullmer, Gunter}, year={2022} }'
chicago: Joy, Tintu David, Deborah Weiß, Britta Schramm, and Gunter Kullmer. “Further
Development of 3D Crack Growth Simulation Program to Include Contact Loading Situations.”
Applied Sciences 12, no. 15 (2022). https://doi.org/10.3390/app12157557.
ieee: 'T. D. Joy, D. Weiß, B. Schramm, and G. Kullmer, “Further Development of 3D
Crack Growth Simulation Program to Include Contact Loading Situations,” Applied
Sciences, vol. 12, no. 15, Art. no. 7557, 2022, doi: 10.3390/app12157557.'
mla: Joy, Tintu David, et al. “Further Development of 3D Crack Growth Simulation
Program to Include Contact Loading Situations.” Applied Sciences, vol.
12, no. 15, 7557, MDPI AG, 2022, doi:10.3390/app12157557.
short: T.D. Joy, D. Weiß, B. Schramm, G. Kullmer, Applied Sciences 12 (2022).
date_created: 2022-12-05T21:49:48Z
date_updated: 2023-04-27T10:13:44Z
department:
- _id: '143'
doi: 10.3390/app12157557
intvolume: ' 12'
issue: '15'
keyword:
- Fluid Flow and Transfer Processes
- Computer Science Applications
- Process Chemistry and Technology
- General Engineering
- Instrumentation
- General Materials Science
language:
- iso: eng
project:
- _id: '130'
grant_number: '418701707'
name: 'TRR 285: TRR 285'
- _id: '132'
name: 'TRR 285 - B: TRR 285 - Project Area B'
- _id: '143'
name: 'TRR 285 – B04: TRR 285 - Subproject B04'
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Further Development of 3D Crack Growth Simulation Program to Include Contact
Loading Situations
type: journal_article
user_id: '45673'
volume: 12
year: '2022'
...
---
_id: '30213'
abstract:
- lang: eng
text: Requirement changes and cascading effects of change propagation are
major sources of inefficiencies in product development and increase the risk of
project failure. Proactive change management of requirement changes yields the
potential to handle such changes efficiently. A systematic approach is required
for proactive change management to assess and reduce the risk of a requirement
change with appropriate effort in industrial application. Within the paper at
hand, a novel method for Proactive Management of Requirement Changes (ProMaRC)
is presented. It is developed in close collaboration with industry experts and
evaluated based on workshops, pilot users’ feedback, three industrial case studies
from the automotive industry and five development projects from research. To limit
the application effort, an automated approach for dependency analysis based on
the machine learning technique BERT and semi-automated assessment of change likelihood
and impact using a modified PageRank algorithm is developed. Applying the method,
the risks of requirement changes are assessed systematically and reduced by means
of proactive change measures. Evaluation shows high performance of dependency
analysis and confirms the applicability and usefulness of the method. This contribution
opens up the research space of proactive risk management for requirement changes
which is currently almost unexploited. It enables more efficient product development.
article_number: '1874'
author:
- first_name: Iris
full_name: Gräßler, Iris
id: '47565'
last_name: Gräßler
orcid: 0000-0001-5765-971X
- first_name: Christian
full_name: Oleff, Christian
id: '41188'
last_name: Oleff
orcid: 0000-0002-0983-1850
- first_name: Daniel
full_name: Preuß, Daniel
id: '40253'
last_name: Preuß
citation:
ama: Gräßler I, Oleff C, Preuß D. Proactive Management of Requirement Changes in
the Development of Complex Technical Systems. Applied Sciences. 2022;12(4).
doi:10.3390/app12041874
apa: Gräßler, I., Oleff, C., & Preuß, D. (2022). Proactive Management of Requirement
Changes in the Development of Complex Technical Systems. Applied Sciences,
12(4), Article 1874. https://doi.org/10.3390/app12041874
bibtex: '@article{Gräßler_Oleff_Preuß_2022, title={Proactive Management of Requirement
Changes in the Development of Complex Technical Systems}, volume={12}, DOI={10.3390/app12041874}, number={41874},
journal={Applied Sciences}, publisher={MDPI AG}, author={Gräßler, Iris and Oleff,
Christian and Preuß, Daniel}, year={2022} }'
chicago: Gräßler, Iris, Christian Oleff, and Daniel Preuß. “Proactive Management
of Requirement Changes in the Development of Complex Technical Systems.” Applied
Sciences 12, no. 4 (2022). https://doi.org/10.3390/app12041874.
ieee: 'I. Gräßler, C. Oleff, and D. Preuß, “Proactive Management of Requirement
Changes in the Development of Complex Technical Systems,” Applied Sciences,
vol. 12, no. 4, Art. no. 1874, 2022, doi: 10.3390/app12041874.'
mla: Gräßler, Iris, et al. “Proactive Management of Requirement Changes in the Development
of Complex Technical Systems.” Applied Sciences, vol. 12, no. 4, 1874,
MDPI AG, 2022, doi:10.3390/app12041874.
short: I. Gräßler, C. Oleff, D. Preuß, Applied Sciences 12 (2022).
date_created: 2022-03-08T12:37:42Z
date_updated: 2023-05-03T08:40:30Z
department:
- _id: '152'
doi: 10.3390/app12041874
intvolume: ' 12'
issue: '4'
keyword:
- Fluid Flow and Transfer Processes
- Computer Science Applications
- Process Chemistry and Technology
- General Engineering
- Instrumentation
- General Materials Science
language:
- iso: eng
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Proactive Management of Requirement Changes in the Development of Complex Technical
Systems
type: journal_article
user_id: '5905'
volume: 12
year: '2022'
...
---
_id: '26759'
abstract:
- lang: eng
text: Coatings of modified TiO2 nanoparticles (TiO2-m) have been shown to
effectively and selectively trap non-adherent cancer cells, with an enormous potential
for applications in photodynamic therapy (PDT). Leukemia cells have a remarkable
affinity for TiO2-m coatings, adhering to the surface by membrane structures and
exhibiting morphologic characteristics of amoeboid locomotion. However, the details
of the cell–substrate interaction induced by the TiO2-m coating remain elusive.
With the aim to obtain a better understanding of this phenomenon, leukemia cell
adhesion to such coatings was characterized by atomic force microscopy (AFM) for
short contact times up to 60 min. The cell and membrane morphological parameters
mean cell height, contact area, cell volume, and membrane roughness were determined
at different contact times. These results reveal cell expansion and contraction
phases occurring during the initial stage of adhesion. Subsequently, the leukemic
cells reach what appears to be a new resting state, characterized by pinning of
the cell membrane by TiO2-m nanoparticle aggregates protruding from the coating
surface.
author:
- first_name: Jaime Andres
full_name: Garcia Diosa, Jaime Andres
last_name: Garcia Diosa
- first_name: Alejandro
full_name: Gonzalez Orive, Alejandro
last_name: Gonzalez Orive
- first_name: Guido
full_name: Grundmeier, Guido
id: '194'
last_name: Grundmeier
- first_name: Ruben Jesus
full_name: Camargo Amado, Ruben Jesus
last_name: Camargo Amado
- first_name: Adrian
full_name: Keller, Adrian
id: '48864'
last_name: Keller
orcid: 0000-0001-7139-3110
citation:
ama: Garcia Diosa JA, Gonzalez Orive A, Grundmeier G, Camargo Amado RJ, Keller A.
Morphological Dynamics of Leukemia Cells on TiO2 Nanoparticle Coatings Studied
by AFM. Applied Sciences. 2021;11:9898. doi:10.3390/app11219898
apa: Garcia Diosa, J. A., Gonzalez Orive, A., Grundmeier, G., Camargo Amado, R.
J., & Keller, A. (2021). Morphological Dynamics of Leukemia Cells on TiO2
Nanoparticle Coatings Studied by AFM. Applied Sciences, 11, 9898.
https://doi.org/10.3390/app11219898
bibtex: '@article{Garcia Diosa_Gonzalez Orive_Grundmeier_Camargo Amado_Keller_2021,
title={Morphological Dynamics of Leukemia Cells on TiO2 Nanoparticle Coatings
Studied by AFM}, volume={11}, DOI={10.3390/app11219898},
journal={Applied Sciences}, author={Garcia Diosa, Jaime Andres and Gonzalez Orive,
Alejandro and Grundmeier, Guido and Camargo Amado, Ruben Jesus and Keller, Adrian},
year={2021}, pages={9898} }'
chicago: 'Garcia Diosa, Jaime Andres, Alejandro Gonzalez Orive, Guido Grundmeier,
Ruben Jesus Camargo Amado, and Adrian Keller. “Morphological Dynamics of Leukemia
Cells on TiO2 Nanoparticle Coatings Studied by AFM.” Applied Sciences 11
(2021): 9898. https://doi.org/10.3390/app11219898.'
ieee: 'J. A. Garcia Diosa, A. Gonzalez Orive, G. Grundmeier, R. J. Camargo Amado,
and A. Keller, “Morphological Dynamics of Leukemia Cells on TiO2 Nanoparticle
Coatings Studied by AFM,” Applied Sciences, vol. 11, p. 9898, 2021, doi:
10.3390/app11219898.'
mla: Garcia Diosa, Jaime Andres, et al. “Morphological Dynamics of Leukemia Cells
on TiO2 Nanoparticle Coatings Studied by AFM.” Applied Sciences, vol. 11,
2021, p. 9898, doi:10.3390/app11219898.
short: J.A. Garcia Diosa, A. Gonzalez Orive, G. Grundmeier, R.J. Camargo Amado,
A. Keller, Applied Sciences 11 (2021) 9898.
date_created: 2021-10-25T07:48:17Z
date_updated: 2022-01-06T06:57:27Z
department:
- _id: '302'
doi: 10.3390/app11219898
intvolume: ' 11'
language:
- iso: eng
page: '9898'
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publication_status: published
status: public
title: Morphological Dynamics of Leukemia Cells on TiO2 Nanoparticle Coatings Studied
by AFM
type: journal_article
user_id: '48864'
volume: 11
year: '2021'
...
---
_id: '22773'
abstract:
- lang: eng
text: Ion beam irradiation of solid surfaces may result in the self-organized
formation of well-defined topographic nanopatterns. Depending on the irradiation
conditions and the material properties, isotropic or anisotropic patterns of differently
shaped features may be obtained. Most intriguingly, the periodicities of these
patterns can be adjusted in the range between less than twenty and several hundred
nanometers, which covers the dimensions of many cellular and extracellular features.
However, even though ion beam nanopatterning has been studied for several decades
and is nowadays widely employed in the fabrication of functional surfaces, it
has found its way into the biomaterials field only recently. This review provides
a brief overview of the basics of ion beam nanopatterning, emphasizes aspects
of particular relevance for biomaterials applications, and summarizes a number
of recent studies that investigated the effects of such nanopatterned surfaces
on the adsorption of biomolecules and the response of adhering cells. Finally,
promising future directions and potential translational challenges are identified.
author:
- first_name: Yu
full_name: Yang, Yu
last_name: Yang
- first_name: Adrian
full_name: Keller, Adrian
id: '48864'
last_name: Keller
orcid: 0000-0001-7139-3110
citation:
ama: Yang Y, Keller A. Ion Beam Nanopatterning of Biomaterial Surfaces. Applied
Sciences. 2021;11:6575. doi:10.3390/app11146575
apa: Yang, Y., & Keller, A. (2021). Ion Beam Nanopatterning of Biomaterial Surfaces.
Applied Sciences, 11, 6575. https://doi.org/10.3390/app11146575
bibtex: '@article{Yang_Keller_2021, title={Ion Beam Nanopatterning of Biomaterial
Surfaces}, volume={11}, DOI={10.3390/app11146575},
journal={Applied Sciences}, author={Yang, Yu and Keller, Adrian}, year={2021},
pages={6575} }'
chicago: 'Yang, Yu, and Adrian Keller. “Ion Beam Nanopatterning of Biomaterial Surfaces.”
Applied Sciences 11 (2021): 6575. https://doi.org/10.3390/app11146575.'
ieee: Y. Yang and A. Keller, “Ion Beam Nanopatterning of Biomaterial Surfaces,”
Applied Sciences, vol. 11, p. 6575, 2021.
mla: Yang, Yu, and Adrian Keller. “Ion Beam Nanopatterning of Biomaterial Surfaces.”
Applied Sciences, vol. 11, 2021, p. 6575, doi:10.3390/app11146575.
short: Y. Yang, A. Keller, Applied Sciences 11 (2021) 6575.
date_created: 2021-07-21T09:25:55Z
date_updated: 2022-01-06T06:55:40Z
department:
- _id: '302'
doi: 10.3390/app11146575
intvolume: ' 11'
language:
- iso: eng
page: '6575'
publication: Applied Sciences
publication_identifier:
issn:
- 2076-3417
publication_status: published
status: public
title: Ion Beam Nanopatterning of Biomaterial Surfaces
type: journal_article
user_id: '48864'
volume: 11
year: '2021'
...