---
_id: '64678'
abstract:
- lang: eng
text: "One of the major topics in the modern automotive industry is reducing emissions
and increasing the mileage\r\nrange. To tackle this challenge, on the one hand,
modifying the powertrain system is a possibility, and on the\r\nother hand, lightweight
design offers various possibilities. Multi-Material Design (MMD) involves designing
car\r\nbodies that combine different materials that require joining. Given the
variety of materials, mechanical joining\r\nprocesses are preferred. Especially
the current development of the Giga/Mega-casting process concerning\r\naluminium
casting and the subsequent mechanical joining illustrates the challenges of this
material group. In car\r\nproduction, aluminium castings are mainly made from
aluminium-silicon (AlSi) alloys. Ultimately, the alloy\r\nsystem's insufficient
ductility leads to crack initiation during mechanical joining. Cast parts are
therefore often\r\nused in areas of the car body that are exposed to high-pressure
loads. For example, self-piercing riveting (SPR) is\r\nused due to its high load-bearing
capacity. In this study, improved joinability is demonstrated by influencing the\r\nmicrostructure
through tailored solidification rates and a developed heat-treatment chain strategy
adapted for\r\nhypoeutectic AlSi systems. Data on microstructure, mechanical,
and joining properties are used to develop a\r\nsolidification-joining correlation
for the SPR process across a range of Si contents and solidification rates. The\r\npurpose
is to develop the ability to produce suitable aluminium castings with sufficient
joinability, thereby\r\nimproving versatility."
article_type: original
author:
- first_name: Moritz
full_name: Neuser, Moritz
id: '32340'
last_name: Neuser
- first_name: Pia Katharina
full_name: Kaimann, Pia Katharina
id: '44935'
last_name: Kaimann
- first_name: Ina
full_name: Stratmann, Ina
last_name: Stratmann
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Johann Moritz Benedikt
full_name: Klöckner, Johann Moritz Benedikt
last_name: Klöckner
- first_name: Moritz
full_name: Mann, Moritz
last_name: Mann
- first_name: Kay-Peter
full_name: Hoyer, Kay-Peter
id: '48411'
last_name: Hoyer
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Mirko
full_name: Schaper, Mirko
id: '43720'
last_name: Schaper
citation:
ama: Neuser M, Kaimann PK, Stratmann I, et al. Solidification-joinability correlation
of hypoeutectic aluminium casting alloys for self-piercing riveting (SPR). Journal
of Manufacturing Processes. 2026;164. doi:https://doi.org/10.1016/j.jmapro.2026.02.040
apa: Neuser, M., Kaimann, P. K., Stratmann, I., Bobbert, M., Klöckner, J. M. B.,
Mann, M., Hoyer, K.-P., Meschut, G., & Schaper, M. (2026). Solidification-joinability
correlation of hypoeutectic aluminium casting alloys for self-piercing riveting
(SPR). Journal of Manufacturing Processes, 164. https://doi.org/10.1016/j.jmapro.2026.02.040
bibtex: '@article{Neuser_Kaimann_Stratmann_Bobbert_Klöckner_Mann_Hoyer_Meschut_Schaper_2026,
title={Solidification-joinability correlation of hypoeutectic aluminium casting
alloys for self-piercing riveting (SPR)}, volume={164}, DOI={https://doi.org/10.1016/j.jmapro.2026.02.040},
journal={Journal of Manufacturing Processes}, publisher={Elsevier}, author={Neuser,
Moritz and Kaimann, Pia Katharina and Stratmann, Ina and Bobbert, Mathias and
Klöckner, Johann Moritz Benedikt and Mann, Moritz and Hoyer, Kay-Peter and Meschut,
Gerson and Schaper, Mirko}, year={2026} }'
chicago: Neuser, Moritz, Pia Katharina Kaimann, Ina Stratmann, Mathias Bobbert,
Johann Moritz Benedikt Klöckner, Moritz Mann, Kay-Peter Hoyer, Gerson Meschut,
and Mirko Schaper. “Solidification-Joinability Correlation of Hypoeutectic Aluminium
Casting Alloys for Self-Piercing Riveting (SPR).” Journal of Manufacturing
Processes 164 (2026). https://doi.org/10.1016/j.jmapro.2026.02.040.
ieee: 'M. Neuser et al., “Solidification-joinability correlation of hypoeutectic
aluminium casting alloys for self-piercing riveting (SPR),” Journal of Manufacturing
Processes, vol. 164, 2026, doi: https://doi.org/10.1016/j.jmapro.2026.02.040.'
mla: Neuser, Moritz, et al. “Solidification-Joinability Correlation of Hypoeutectic
Aluminium Casting Alloys for Self-Piercing Riveting (SPR).” Journal of Manufacturing
Processes, vol. 164, Elsevier, 2026, doi:https://doi.org/10.1016/j.jmapro.2026.02.040.
short: M. Neuser, P.K. Kaimann, I. Stratmann, M. Bobbert, J.M.B. Klöckner, M. Mann,
K.-P. Hoyer, G. Meschut, M. Schaper, Journal of Manufacturing Processes 164 (2026).
date_created: 2026-02-26T11:21:24Z
date_updated: 2026-02-26T11:22:03Z
department:
- _id: '43'
- _id: '158'
- _id: '157'
- _id: '321'
doi: https://doi.org/10.1016/j.jmapro.2026.02.040
funded_apc: '1'
intvolume: ' 164'
keyword:
- Mechanical joining
- Aluminium
- Self-piercing riveting
- Casting
- Microstructure
- Joinability AlSi-alloys
language:
- iso: eng
project:
- _id: '131'
name: TRR 285 - Project Area A
- _id: '133'
name: TRR 285 - Project Area C
- _id: '136'
name: TRR 285 - Subproject A02
- _id: '146'
name: TRR 285 - Subproject C02
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: Journal of Manufacturing Processes
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Solidification-joinability correlation of hypoeutectic aluminium casting alloys
for self-piercing riveting (SPR)
type: journal_article
user_id: '32340'
volume: 164
year: '2026'
...
---
_id: '65689'
abstract:
- lang: eng
text: "The use of aluminium materials in the structural and bodywork areas of assemblies
has proven to be a targeted option for lightweight design. How-ever, the reliable
and cost-efficient joining of aluminium components remains a challenge. Mechanical
joining methods, such as riveting, are frequently used in the automotive and aerospace
construction industries. Rivets are made from heat-treated steels. Compared to
steel, the use of aluminium materials for fasten-ers offers several advantages
in terms of joining properties, particularly in terms of recyclability, corrosion
resistance and reduced weight of the joined structure. Additionally, the manufacturing
process is shorter since aluminium fasteners do not require coating. However,
aluminium rivets can often not be used due to the insufficient mechanical strength
of the fastener material in relation to the joining component materials.\r\nThis
study systematically investigates the requirements for using solid alu-minium
self-piercing rivets. The influence of rivet geometry adjustments on the joint
quality is analysed using numerical simulation. The results are used to derive
and evaluate an optimised rivet geometry for joining pure aluminium sheets. On
this basis, solid self-drilling rivets with optimised geometry are manufactured
from particle-reinforced aluminium produced in a continuous extrusion process
by machining. The integration of particles increases the material’s strength.
Exper-imental tests are conducted to evaluate the use of optimised solid self-piercing
rivets. The quality-relevant parameters are determined and evaluated based on
macrographs of the joints."
author:
- first_name: Steffen
full_name: Koch, Steffen
last_name: Koch
- first_name: Joshua
full_name: Weber, Joshua
last_name: Weber
- first_name: Gerson
full_name: Meschut, Gerson
last_name: Meschut
- first_name: Claudia
full_name: Stadelmann, Claudia
last_name: Stadelmann
- first_name: Wolfgang
full_name: Böhm, Wolfgang
last_name: Böhm
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
citation:
ama: 'Koch S, Weber J, Meschut G, Stadelmann C, Böhm W, Merklein M. Particle-Reinforced
Aluminium Solid Self-piercing Rivets for Joining Aluminium Alloy Sheets. In: Proceedings
in Engineering Mechanics. Springer Nature Switzerland; 2026. doi:10.1007/978-3-032-23641-8_1'
apa: Koch, S., Weber, J., Meschut, G., Stadelmann, C., Böhm, W., & Merklein,
M. (2026). Particle-Reinforced Aluminium Solid Self-piercing Rivets for Joining
Aluminium Alloy Sheets. In Proceedings in Engineering Mechanics. 4th International
Conference on Advanced Joining Processes 2025, Coimbra. Springer Nature Switzerland.
https://doi.org/10.1007/978-3-032-23641-8_1
bibtex: '@inbook{Koch_Weber_Meschut_Stadelmann_Böhm_Merklein_2026, place={Cham},
title={Particle-Reinforced Aluminium Solid Self-piercing Rivets for Joining Aluminium
Alloy Sheets}, DOI={10.1007/978-3-032-23641-8_1},
booktitle={Proceedings in Engineering Mechanics}, publisher={Springer Nature Switzerland},
author={Koch, Steffen and Weber, Joshua and Meschut, Gerson and Stadelmann, Claudia
and Böhm, Wolfgang and Merklein, Marion}, year={2026} }'
chicago: 'Koch, Steffen, Joshua Weber, Gerson Meschut, Claudia Stadelmann, Wolfgang
Böhm, and Marion Merklein. “Particle-Reinforced Aluminium Solid Self-Piercing
Rivets for Joining Aluminium Alloy Sheets.” In Proceedings in Engineering Mechanics.
Cham: Springer Nature Switzerland, 2026. https://doi.org/10.1007/978-3-032-23641-8_1.'
ieee: 'S. Koch, J. Weber, G. Meschut, C. Stadelmann, W. Böhm, and M. Merklein, “Particle-Reinforced
Aluminium Solid Self-piercing Rivets for Joining Aluminium Alloy Sheets,” in Proceedings
in Engineering Mechanics, Cham: Springer Nature Switzerland, 2026.'
mla: Koch, Steffen, et al. “Particle-Reinforced Aluminium Solid Self-Piercing Rivets
for Joining Aluminium Alloy Sheets.” Proceedings in Engineering Mechanics,
Springer Nature Switzerland, 2026, doi:10.1007/978-3-032-23641-8_1.
short: 'S. Koch, J. Weber, G. Meschut, C. Stadelmann, W. Böhm, M. Merklein, in:
Proceedings in Engineering Mechanics, Springer Nature Switzerland, Cham, 2026.'
conference:
location: Coimbra
name: 4th International Conference on Advanced Joining Processes 2025
date_created: 2026-05-26T12:16:57Z
date_updated: 2026-06-16T13:21:39Z
department:
- _id: '43'
- _id: '157'
doi: 10.1007/978-3-032-23641-8_1
keyword:
- Solid self-piercing riveting cdot particle-reinforced aluminium cdot continuous
powder extrusion cdot Joining technology cdot Rivet geometry cdot lightweight design
language:
- iso: eng
place: Cham
publication: Proceedings in Engineering Mechanics
publication_identifier:
isbn:
- '9783032236401'
- '9783032236418'
issn:
- 2731-0221
- 2731-023X
publication_status: published
publisher: Springer Nature Switzerland
quality_controlled: '1'
status: public
title: Particle-Reinforced Aluminium Solid Self-piercing Rivets for Joining Aluminium
Alloy Sheets
type: book_chapter
user_id: '61419'
year: '2026'
...
---
_id: '58163'
abstract:
- lang: eng
text: Fibre-reinforced polymers are increasingly used due to their high specific
strength, making them suitable for local sheet metal reinforcement. This allows
improved overall mechanical properties with reduced wall thickness of the sheet
metal part and, thus, lower weight of the components. One of the main focuses
of research into such hybrid structures is on the adhesive properties and the
respective failure behaviour of the interfaces. Generally, the failure behaviour
under the influence of mechanical loads can be divided into adhesive, cohesive
and mixed-mode failure. The correlation between observed failure behaviour and
adhesion properties of the hybrid composite materials is analysed in detail in
this work. The hybrid composite consists of an aluminium sheet of the alloy EN
AW‑6082 T6 and thermoset carbon fibre-reinforced plastic (CFRP) prepreg. The aluminium
sheet was laser pretreated before hybrid production to improve the adhesion properties.
The specimens studied were produced by the prepreg pressing process, in which
the components are cured and joined simultaneously. The influences of the thickness
of the CFRP part, the layup, the fibre orientation at the boundary layer, and
the laser pretreatment parameters on the properties of the hybrid joints were
investigated.
article_type: original
author:
- first_name: Shuang
full_name: Wu, Shuang
id: '48039'
last_name: Wu
orcid: 0000-0001-8645-9952
- first_name: Alexander
full_name: Delp, Alexander
last_name: Delp
- first_name: Jonathan
full_name: Freund, Jonathan
last_name: Freund
- first_name: Frank
full_name: Walther, Frank
last_name: Walther
- first_name: Jan
full_name: Haubrich, Jan
last_name: Haubrich
- first_name: Miriam
full_name: Löbbecke, Miriam
last_name: Löbbecke
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
citation:
ama: Wu S, Delp A, Freund J, et al. Correlation between interlaminar shear strength
of CFRP and joint strength of aluminium-CFRP hybrid joints. The Journal of
Adhesion. Published online 2025:1-26. doi:10.1080/00218464.2024.2439956
apa: Wu, S., Delp, A., Freund, J., Walther, F., Haubrich, J., Löbbecke, M., &
Tröster, T. (2025). Correlation between interlaminar shear strength of CFRP and
joint strength of aluminium-CFRP hybrid joints. The Journal of Adhesion,
1–26. https://doi.org/10.1080/00218464.2024.2439956
bibtex: '@article{Wu_Delp_Freund_Walther_Haubrich_Löbbecke_Tröster_2025, title={Correlation
between interlaminar shear strength of CFRP and joint strength of aluminium-CFRP
hybrid joints}, DOI={10.1080/00218464.2024.2439956},
journal={The Journal of Adhesion}, publisher={Informa UK Limited}, author={Wu,
Shuang and Delp, Alexander and Freund, Jonathan and Walther, Frank and Haubrich,
Jan and Löbbecke, Miriam and Tröster, Thomas}, year={2025}, pages={1–26} }'
chicago: Wu, Shuang, Alexander Delp, Jonathan Freund, Frank Walther, Jan Haubrich,
Miriam Löbbecke, and Thomas Tröster. “Correlation between Interlaminar Shear Strength
of CFRP and Joint Strength of Aluminium-CFRP Hybrid Joints.” The Journal of
Adhesion, 2025, 1–26. https://doi.org/10.1080/00218464.2024.2439956.
ieee: 'S. Wu et al., “Correlation between interlaminar shear strength of
CFRP and joint strength of aluminium-CFRP hybrid joints,” The Journal of Adhesion,
pp. 1–26, 2025, doi: 10.1080/00218464.2024.2439956.'
mla: Wu, Shuang, et al. “Correlation between Interlaminar Shear Strength of CFRP
and Joint Strength of Aluminium-CFRP Hybrid Joints.” The Journal of Adhesion,
Informa UK Limited, 2025, pp. 1–26, doi:10.1080/00218464.2024.2439956.
short: S. Wu, A. Delp, J. Freund, F. Walther, J. Haubrich, M. Löbbecke, T. Tröster,
The Journal of Adhesion (2025) 1–26.
date_created: 2025-01-13T08:16:46Z
date_updated: 2026-02-20T12:49:17Z
department:
- _id: '321'
- _id: '149'
- _id: '9'
doi: 10.1080/00218464.2024.2439956
keyword:
- Prepreg pressing process
- hybrid joints
- laser surface pretreatment
- intrinsic manufacturing
- CFRP
- aluminium
- materials engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.tandfonline.com/doi/full/10.1080/00218464.2024.2439956?src=
oa: '1'
page: 1-26
publication: The Journal of Adhesion
publication_identifier:
issn:
- 0021-8464
- 1545-5823
publication_status: published
publisher: Informa UK Limited
quality_controlled: '1'
status: public
title: Correlation between interlaminar shear strength of CFRP and joint strength
of aluminium-CFRP hybrid joints
type: journal_article
user_id: '48039'
year: '2025'
...
---
_id: '59872'
abstract:
- lang: eng
text: Lightweight design is a driving concept in modern automotive engineering to
minimize resource consumption over a vehicle's lifecycle through multi-material
design, which relies on the use of joining techniques in car body fabrication.
Multi-material design and the increasing trend towards producing large structural
components using the megacasting process pose considerable challenges, particularly
in the mechanical joining of aluminium-silicon (AlSi) castings. These castings
typically exhibit low ductility and are prone to cracking when mechanically joined.
Based on the excellent castability of hypoeutectic AlSi alloys, these are applied
in sand casting and die casting as well as in megacasting. With a silicon content
between 7 wt% and 12 wt%, these AlSi-alloys have a plate-like silicon phase that
initiates cracks during mechanical joining. To enhance the joinability of castings,
the research hypothesis is that improved solidification conditions enable a significant
modification in the microstructure and therefore, increase the mechanical properties.
During the manufacture of the castings using the sand casting process, the solidification
conditions within the structural elements are varied to modify the microstructure
to obtain castings with graded microstructure. The castings are evaluated using
mechanical, microstructural and joining testing methods and finally, a microstructure-joinability
correlation is established.
article_number: '01081'
article_type: original
author:
- first_name: Moritz
full_name: Neuser, Moritz
id: '32340'
last_name: Neuser
- first_name: Malte Christian
full_name: Schlichter, Malte Christian
id: '61977'
last_name: Schlichter
- first_name: Kay-Peter
full_name: Hoyer, Kay-Peter
id: '48411'
last_name: Hoyer
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Mirko
full_name: Schaper, Mirko
id: '43720'
last_name: Schaper
citation:
ama: Neuser M, Schlichter MC, Hoyer K-P, Bobbert M, Meschut G, Schaper M. Mechanical
joinability of microstructurally graded structural components manufactured from
hypoeutectic aluminium casting alloys. 44th Conference of the International
Deep Drawing Research Group (IDDRG 2025). 2025;408. doi:10.1051/matecconf/202540801081
apa: Neuser, M., Schlichter, M. C., Hoyer, K.-P., Bobbert, M., Meschut, G., &
Schaper, M. (2025). Mechanical joinability of microstructurally graded structural
components manufactured from hypoeutectic aluminium casting alloys. 44th Conference
of the International Deep Drawing Research Group (IDDRG 2025), 408,
Article 01081. https://doi.org/10.1051/matecconf/202540801081
bibtex: '@article{Neuser_Schlichter_Hoyer_Bobbert_Meschut_Schaper_2025, title={Mechanical
joinability of microstructurally graded structural components manufactured from
hypoeutectic aluminium casting alloys}, volume={408}, DOI={10.1051/matecconf/202540801081},
number={01081}, journal={44th Conference of the International Deep Drawing Research
Group (IDDRG 2025)}, author={Neuser, Moritz and Schlichter, Malte Christian and
Hoyer, Kay-Peter and Bobbert, Mathias and Meschut, Gerson and Schaper, Mirko},
year={2025} }'
chicago: Neuser, Moritz, Malte Christian Schlichter, Kay-Peter Hoyer, Mathias Bobbert,
Gerson Meschut, and Mirko Schaper. “Mechanical Joinability of Microstructurally
Graded Structural Components Manufactured from Hypoeutectic Aluminium Casting
Alloys.” 44th Conference of the International Deep Drawing Research Group (IDDRG
2025) 408 (2025). https://doi.org/10.1051/matecconf/202540801081.
ieee: 'M. Neuser, M. C. Schlichter, K.-P. Hoyer, M. Bobbert, G. Meschut, and M.
Schaper, “Mechanical joinability of microstructurally graded structural components
manufactured from hypoeutectic aluminium casting alloys,” 44th Conference of
the International Deep Drawing Research Group (IDDRG 2025), vol. 408, Art.
no. 01081, 2025, doi: 10.1051/matecconf/202540801081.'
mla: Neuser, Moritz, et al. “Mechanical Joinability of Microstructurally Graded
Structural Components Manufactured from Hypoeutectic Aluminium Casting Alloys.”
44th Conference of the International Deep Drawing Research Group (IDDRG 2025),
vol. 408, 01081, 2025, doi:10.1051/matecconf/202540801081.
short: M. Neuser, M.C. Schlichter, K.-P. Hoyer, M. Bobbert, G. Meschut, M. Schaper,
44th Conference of the International Deep Drawing Research Group (IDDRG 2025)
408 (2025).
conference:
end_date: 2025-06-05
location: Lissabon (Portugal)
name: 44th Conference of the International Deep Drawing Research Group (IDDRG 2025)
start_date: 2025-06-02
date_created: 2025-05-12T15:21:06Z
date_updated: 2026-02-24T13:41:58Z
department:
- _id: '43'
- _id: '158'
- _id: '157'
- _id: '9'
- _id: '321'
doi: 10.1051/matecconf/202540801081
intvolume: ' 408'
keyword:
- Joining
- Casting
- Self-pierce riveting
- Aluminium casting alloy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: "\thttps://doi.org/10.1051/matecconf/202540801081"
oa: '1'
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '136'
name: 'TRR 285 – A02: TRR 285 - Subproject A02'
- _id: '135'
name: 'TRR 285 – A01: TRR 285 - Subproject A01'
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: 44th Conference of the International Deep Drawing Research Group (IDDRG
2025)
publication_status: published
quality_controlled: '1'
status: public
title: Mechanical joinability of microstructurally graded structural components manufactured
from hypoeutectic aluminium casting alloys
type: journal_article
user_id: '7850'
volume: 408
year: '2025'
...
---
_id: '58807'
abstract:
- lang: eng
text: "One of the most important strategies for reducing CO2 emissions in the mobility
sector is lightweight construction. In particular, the car body offers several
opportunities for weight reduction. Multi-material designs are increasingly being
applied to select the most suitable material for the respective load and ultimately
achieve synergy effects. For example, aluminium castings are used at the nodes
of a spaceframe body. Subsequently, these are joined with profiles to form the
bodyshell. To join different materials mechanical joining techniques, such as
semi-tubular self-piercing riveting, are deployed. According to the current state
of the art, cracks occur in the aluminium castings during the mechanical joining
process as a result of the high degree of deformation. Although the aluminium
casting alloys of the AlSi-system exhibit low ductility, these alloys reveal excellent
castability. In particular, the ability to cast thin structural parts is enabled
by the low liquidus point of the near eutectic aluminium casting alloys.\r\nThis
study addresses the mechanical joining properties of the near eutectic aluminium
casting alloy AlSi12, depending on different microstructures. These are achieved
by annealing processes and modifying agents. Through an adapted heat treatment,
the previously lamellar morphology can be transformed into a globular morphology,
which leads to increased ductility and prevents the formation of cracks during
the self-piercing riveting (SPR). The joinability is investigated using different
die geometries, whereas the joint formation is analysed regarding crack initiation.
To evaluate the increased ductility, microstructural and mechanical tests are
performed and finally, a microstructure-joinability correlation is established."
article_type: original
author:
- first_name: Moritz
full_name: Neuser, Moritz
id: '32340'
last_name: Neuser
- first_name: Pia Katharina
full_name: Holtkamp, Pia Katharina
id: '44935'
last_name: Holtkamp
- first_name: Kay-Peter
full_name: Hoyer, Kay-Peter
id: '48411'
last_name: Hoyer
- first_name: Fabian
full_name: Kappe, Fabian
id: '66459'
last_name: Kappe
- first_name: Safak
full_name: Yildiz, Safak
last_name: Yildiz
- first_name: Mathias
full_name: Bobbert, Mathias
id: '7850'
last_name: Bobbert
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
- first_name: Mirko
full_name: Schaper, Mirko
id: '43720'
last_name: Schaper
citation:
ama: 'Neuser M, Holtkamp PK, Hoyer K-P, et al. Mechanical properties and joinability
of the near-eutectic aluminium casting alloy AlSi12. The Journal of Materials:
Design and Applications, Part L. Published online 2025. doi:10.1177/14644207251319922'
apa: 'Neuser, M., Holtkamp, P. K., Hoyer, K.-P., Kappe, F., Yildiz, S., Bobbert,
M., Meschut, G., & Schaper, M. (2025). Mechanical properties and joinability
of the near-eutectic aluminium casting alloy AlSi12. The Journal of Materials:
Design and Applications, Part L. 5th International Conference on Materials
Design and Applications 2024, Porto, Portugal. https://doi.org/10.1177/14644207251319922'
bibtex: '@article{Neuser_Holtkamp_Hoyer_Kappe_Yildiz_Bobbert_Meschut_Schaper_2025,
title={Mechanical properties and joinability of the near-eutectic aluminium casting
alloy AlSi12}, DOI={10.1177/14644207251319922},
journal={The Journal of Materials: Design and Applications, Part L}, publisher={Sage
Publications}, author={Neuser, Moritz and Holtkamp, Pia Katharina and Hoyer, Kay-Peter
and Kappe, Fabian and Yildiz, Safak and Bobbert, Mathias and Meschut, Gerson and
Schaper, Mirko}, year={2025} }'
chicago: 'Neuser, Moritz, Pia Katharina Holtkamp, Kay-Peter Hoyer, Fabian Kappe,
Safak Yildiz, Mathias Bobbert, Gerson Meschut, and Mirko Schaper. “Mechanical
Properties and Joinability of the Near-Eutectic Aluminium Casting Alloy AlSi12.”
The Journal of Materials: Design and Applications, Part L, 2025. https://doi.org/10.1177/14644207251319922.'
ieee: 'M. Neuser et al., “Mechanical properties and joinability of the near-eutectic
aluminium casting alloy AlSi12,” The Journal of Materials: Design and Applications,
Part L, 2025, doi: 10.1177/14644207251319922.'
mla: 'Neuser, Moritz, et al. “Mechanical Properties and Joinability of the Near-Eutectic
Aluminium Casting Alloy AlSi12.” The Journal of Materials: Design and Applications,
Part L, Sage Publications, 2025, doi:10.1177/14644207251319922.'
short: 'M. Neuser, P.K. Holtkamp, K.-P. Hoyer, F. Kappe, S. Yildiz, M. Bobbert,
G. Meschut, M. Schaper, The Journal of Materials: Design and Applications, Part
L (2025).'
conference:
end_date: 2024-07-05
location: Porto, Portugal
name: 5th International Conference on Materials Design and Applications 2024
start_date: 2024-07-04
date_created: 2025-02-24T10:25:31Z
date_updated: 2026-05-12T12:13:31Z
department:
- _id: '43'
- _id: '158'
- _id: '157'
- _id: '9'
- _id: '321'
doi: 10.1177/14644207251319922
has_accepted_license: '1'
keyword:
- aluminium
- casting
- microstructure
- joinability
- self-piercing riveting
language:
- iso: eng
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '136'
name: 'TRR 285 – A02: TRR 285 - Subproject A02'
- _id: '133'
name: 'TRR 285 - C: TRR 285 - Project Area C'
- _id: '146'
name: 'TRR 285 – C02: TRR 285 - Subproject C02'
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: 'The Journal of Materials: Design and Applications, Part L'
publication_status: published
publisher: Sage Publications
quality_controlled: '1'
status: public
title: Mechanical properties and joinability of the near-eutectic aluminium casting
alloy AlSi12
type: journal_article
user_id: '7850'
year: '2025'
...
---
_id: '60645'
abstract:
- lang: ger
text: Die Wandlungsfähigkeit einer Prozesskette erfordert Fügeverbindungen mit gezielt
einstellbaren mechanischen, elektrischen, thermischen oder chemischen Eigenschaften.
Dieser Beitrag beschreibt die Untersuchungen, inwiefern beim Clinchen zweier Bleche
aus der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014 bereits auf Basis
der Prozessüberwachung des Kraft-Weg-Verlaufs bzw. des sich daraus ergebenden
Energieeintrags auf die mechanischen und elektrischen Eigenschaften der Fügeverbindung
geschlossen werden kann. An einer ausgewählten Fügeaufgabe werden im Stufenversuch
die gegenseitigen Abhängigkeiten der einzelnen Einflussgrößen sowie des Wärmebehandlungszustands
aufgezeigt. Dabei wird zwischen den Bindemechanismen Formschluss und Kraftschluss
unterschieden. Die Formschlusskomponente wird anhand der geometrischen Kenngrößen
wie Bodendicke, Halsdicke und Hinterschnitt in Mikroskopieuntersuchungen an Schliffbildern
und den mechanischen Eigenschaften der Fügeverbindung untersucht, die im Scherzug-
und Kopfzugversuch bestimmt werden. Dazu erfolgt zudem die Charakterisierung der
Versagensbilder. Zur Quantifizierung der Kraftschlusskomponente der Fügeverbindung
werden das Losbrechmoment im Torsionsversuch und der elektrische Widerstand mittels
Vier-Leiter-Methode ermittelt und korreliert.
author:
- first_name: Stephan
full_name: Lüder, Stephan
id: '104468'
last_name: Lüder
orcid: https://orcid.org/0000-0002-9086-3031
- first_name: Jan
full_name: Kalich, Jan
last_name: Kalich
- first_name: Hannes
full_name: Oesterle, Hannes
last_name: Oesterle
- first_name: Hans Christian
full_name: Schmale, Hans Christian
last_name: Schmale
citation:
ama: 'Lüder S, Kalich J, Oesterle H, Schmale HC. Prozessüberwachte Eigenschaftseinstellung
beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014. In: Krupp
U, Steller I, Stahlinstitut VDEh, eds. Tagung Werkstoffprüfung 2024: Werkstoffe
und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung.
; 2024:205-210.'
apa: 'Lüder, S., Kalich, J., Oesterle, H., & Schmale, H. C. (2024). Prozessüberwachte
Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung
EN AW-6014. In U. Krupp, I. Steller, & Stahlinstitut VDEh (Eds.), Tagung
Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik
– Kennwertermittlung – Schadensvermeidung (pp. 205–210).'
bibtex: '@inproceedings{Lüder_Kalich_Oesterle_Schmale_2024, place={Düsseldorf},
title={Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren
Aluminiumlegierung EN AW-6014}, booktitle={Tagung Werkstoffprüfung 2024: Werkstoffe
und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung},
author={Lüder, Stephan and Kalich, Jan and Oesterle, Hannes and Schmale, Hans
Christian}, editor={Krupp, Ulrich and Steller, Ingo and Stahlinstitut VDEh}, year={2024},
pages={205–210} }'
chicago: 'Lüder, Stephan, Jan Kalich, Hannes Oesterle, and Hans Christian Schmale.
“Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren
Aluminiumlegierung EN AW-6014.” In Tagung Werkstoffprüfung 2024: Werkstoffe
und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung,
edited by Ulrich Krupp, Ingo Steller, and Stahlinstitut VDEh, 205–10. Düsseldorf,
2024.'
ieee: 'S. Lüder, J. Kalich, H. Oesterle, and H. C. Schmale, “Prozessüberwachte Eigenschaftseinstellung
beim Clinchen der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014,” in Tagung
Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik
– Kennwertermittlung – Schadensvermeidung, Krefeld, 2024, pp. 205–210.'
mla: 'Lüder, Stephan, et al. “Prozessüberwachte Eigenschaftseinstellung beim Clinchen
der ausscheidungshärtbaren Aluminiumlegierung EN AW-6014.” Tagung Werkstoffprüfung
2024: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung
– Schadensvermeidung, edited by Ulrich Krupp et al., 2024, pp. 205–10.'
short: 'S. Lüder, J. Kalich, H. Oesterle, H.C. Schmale, in: U. Krupp, I. Steller,
Stahlinstitut VDEh (Eds.), Tagung Werkstoffprüfung 2024: Werkstoffe und Bauteile
auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung, Düsseldorf,
2024, pp. 205–210.'
conference:
end_date: 2024-12-06
location: Krefeld
name: Tagung Werkstoffprüfung 2024
start_date: 2024-12-05
corporate_editor:
- Stahlinstitut VDEh
date_created: 2025-07-18T09:01:25Z
date_updated: 2026-05-12T13:37:10Z
department:
- _id: '630'
editor:
- first_name: Ulrich
full_name: Krupp, Ulrich
last_name: Krupp
- first_name: Ingo
full_name: Steller, Ingo
last_name: Steller
extern: '1'
keyword:
- Clinchen
- Aluminium
- Stufensetzversuch
- Bindemechanismus
- Formschluss
- Kraftschluss
- Zugversuch
- Torsionsversuch
- Widerstandsmessung
language:
- iso: ger
page: 205-210
place: Düsseldorf
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: 'Tagung Werkstoffprüfung 2024: Werkstoffe und Bauteile auf dem Prüfstand,
Prüftechnik – Kennwertermittlung – Schadensvermeidung'
publication_identifier:
isbn:
- 978-3-941269-97-2
publication_status: published
quality_controlled: '1'
status: public
title: Prozessüberwachte Eigenschaftseinstellung beim Clinchen der ausscheidungshärtbaren
Aluminiumlegierung EN AW-6014
type: conference
user_id: '7850'
year: '2024'
...
---
_id: '41971'
abstract:
- lang: ger
text: "Ultraschall-Drahtbonden ist eine Standardtechnologie im Bereich der Aufbau-
und Verbindungstechnik von Leistungshalbleitermodulen. Um Prozessschritte und
damit wertvolle Zeit zu sparen, sollen die Kupferdickdrähte für die Leistungshalbleiter
auch für die Kontaktierung von eingespritzten Anschlusssteckern im Modulrahmen
verwendet werden. Das Kontaktierungsverfahren mit diesen Drähten auf Steckern
in dünnwandigen Kunststoffrahmen führt häufig zu unzureichender Bondqualität.
In dieser Arbeit wird das Bonden von Anschlusssteckern experimentell und anhand
von Simulationen untersucht, um die Prozessstabilität zu steigern.\r\n\r\nZunächst
wurden Experimente auf Untergründen mit hoher Steifigkeit durchgeführt, um Störgrößen
von Untergrundeigenschaften zu verringern. Die gewonnenen Erkenntnisse erlaubten
die Entwicklung eines Simulationsmodells für die Vorhersage der Bondqualität.
Dieses basiert auf einer flächenaufgelösten Reibarbeitsbestimmung im Fügebereich
unter Berücksichtigung des Ultraschallerweichungseffektes und der hierdurch entstehenden
hohen Drahtverformung.\r\n\r\nExperimente an den Anschlusssteckern im Modulrahmen
zeigten eine verringerte Relativverschiebung zwischen Draht und Stecker, was zu
einer deutlichen Verringerung der Reibarbeit führt. Außerdem wurden verminderte
Schwingamplituden des Bondwerkzeugs nachgewiesen. Dies führt zu einer weiteren
Reduktion der Reibarbeit. Beide Effekte wurden mithilfe eines Mehrmassenschwingers
modelliert. Die gewonnenen Erkenntnisse und die erstellten Simulationsmodelle
ermöglichen die Entwicklung von Klemmvorrichtungen, welche die identifizierten
Störgrößen gezielt kompensieren und so ein verlässliches Bonden der Anschlussstecker
im gleichen Prozessschritt ermöglichen, in dem auch die Leistungshalbleiter kontaktiert
werden."
author:
- first_name: Simon
full_name: Althoff, Simon
last_name: Althoff
citation:
ama: Althoff S. Predicting the Bond Quality of Heavy Copper Wire Bonds Using
a Friction Model Approach. Vol 15. Shaker; 2023.
apa: Althoff, S. (2023). Predicting the Bond Quality of Heavy Copper Wire Bonds
using a Friction Model Approach (Vol. 15). Shaker.
bibtex: '@book{Althoff_2023, series={Schriften des Lehrstuhls für Dynamik und Mechatronik},
title={Predicting the Bond Quality of Heavy Copper Wire Bonds using a Friction
Model Approach}, volume={15}, publisher={Shaker}, author={Althoff, Simon}, year={2023},
collection={Schriften des Lehrstuhls für Dynamik und Mechatronik} }'
chicago: Althoff, Simon. Predicting the Bond Quality of Heavy Copper Wire Bonds
Using a Friction Model Approach. Vol. 15. Schriften Des Lehrstuhls Für Dynamik
Und Mechatronik. Shaker, 2023.
ieee: S. Althoff, Predicting the Bond Quality of Heavy Copper Wire Bonds using
a Friction Model Approach, vol. 15. Shaker, 2023.
mla: Althoff, Simon. Predicting the Bond Quality of Heavy Copper Wire Bonds Using
a Friction Model Approach. Shaker, 2023.
short: S. Althoff, Predicting the Bond Quality of Heavy Copper Wire Bonds Using
a Friction Model Approach, Shaker, 2023.
date_created: 2023-02-10T13:05:19Z
date_updated: 2023-02-10T13:05:42Z
department:
- _id: '151'
extern: '1'
intvolume: ' 15'
keyword:
- heavy copper bonding
- wire bonding
- quality prediction
- friction model
- point-contact-element
language:
- iso: eng
main_file_link:
- url: https://katalog.ub.uni-paderborn.de/local/r/9925085762506463?sr[q,any]=Simon%20Althoff
page: '192'
publication_identifier:
isbn:
- 978-3-8440-8903-5
publication_status: published
publisher: Shaker
related_material:
link:
- relation: confirmation
url: https://www.shaker.de/de/content/catalogue/index.asp?lang=de&ID=8&ISBN=978-3-8440-8903-5&search=yes
series_title: Schriften des Lehrstuhls für Dynamik und Mechatronik
status: public
supervisor:
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
title: Predicting the Bond Quality of Heavy Copper Wire Bonds using a Friction Model
Approach
type: dissertation
user_id: '55222'
volume: 15
year: '2023'
...
---
_id: '44036'
abstract:
- lang: eng
text: Abstract. In order to reduce global energy consumption in production
and industry along with the associated CO2 emissions, existing resources must
be used more efficiently. This includes the energy-efficient and comprehensive
recycling of a wide range of metals. Especially for the production of aluminium,
there is a large potential for saving energy using efficient recycling processes.
With regard to the recycling of aluminium studies have shown that solid-state
recycling processes are significantly more efficient considering the used energy
and resources compared to the conventional, smelting-metallurgical recycling process.
In this paper, the direct and energy-efficient friction-induced recycling process
(FIRP) based on the conform process is further described and analysed in terms
of the temperature-property relationships. For this purpose, the influence of
the processing temperature on the microstructure and properties of the recycled
semi-finished products is investigated using the toll system that enables an ECAP
forming. Specific sections of the (in theory) infinite, recycled semi-finished
product are taken and analysed at different process temperatures of the solid
state recycling process. Based on these sections, the properties in terms of mechanical
hardness, strength, ductility and grain size are analysed and a degressive relationship
between process temperature and mechanical hardness up to a temperature of 270
°C can be shown. Applying the Hall-Petch relationship, it is analysed whether
there is a correlation between the strength and the microstructure in the form
of the grain size.
author:
- first_name: Thomas
full_name: Borgert, Thomas
id: '83141'
last_name: Borgert
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
citation:
ama: 'Borgert T, Homberg W. Analysis of temperature effect on strength and microstructure
in friction induced recycling process (FIRP). In: Materials Research Proceedings.
Materials Research Forum LLC; 2023. doi:10.21741/9781644902479-211'
apa: Borgert, T., & Homberg, W. (2023). Analysis of temperature effect on strength
and microstructure in friction induced recycling process (FIRP). Materials
Research Proceedings. ESAFORM 2023, Kraków. https://doi.org/10.21741/9781644902479-211
bibtex: '@inproceedings{Borgert_Homberg_2023, title={Analysis of temperature effect
on strength and microstructure in friction induced recycling process (FIRP)},
DOI={10.21741/9781644902479-211},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Borgert, Thomas and Homberg, Werner}, year={2023} }'
chicago: Borgert, Thomas, and Werner Homberg. “Analysis of Temperature Effect on
Strength and Microstructure in Friction Induced Recycling Process (FIRP).” In
Materials Research Proceedings. Materials Research Forum LLC, 2023. https://doi.org/10.21741/9781644902479-211.
ieee: 'T. Borgert and W. Homberg, “Analysis of temperature effect on strength and
microstructure in friction induced recycling process (FIRP),” presented at the
ESAFORM 2023, Kraków, 2023, doi: 10.21741/9781644902479-211.'
mla: Borgert, Thomas, and Werner Homberg. “Analysis of Temperature Effect on Strength
and Microstructure in Friction Induced Recycling Process (FIRP).” Materials
Research Proceedings, Materials Research Forum LLC, 2023, doi:10.21741/9781644902479-211.
short: 'T. Borgert, W. Homberg, in: Materials Research Proceedings, Materials Research
Forum LLC, 2023.'
conference:
location: Kraków
name: ESAFORM 2023
date_created: 2023-04-17T08:00:28Z
date_updated: 2023-04-26T13:26:22Z
department:
- _id: '156'
doi: 10.21741/9781644902479-211
keyword:
- Recycling
- Aluminium
- Friction-Induced
- Energy Efficiency
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: Analysis of temperature effect on strength and microstructure in friction induced
recycling process (FIRP)
type: conference
user_id: '83141'
year: '2023'
...
---
_id: '43044'
abstract:
- lang: eng
text: Abstract. The combination of incremental sheet metal forming and high-speed
forming offers new possibilities for flexible forming processes in the production
of large sheet metal components of increased complexity with relatively low forming
energies. In this paper, the general feasibility and process differences between
the pulse-driven high-speed forming technologies of electrohydraulic and electromagnetic
forming were investigated. An example component made of EN AW 6016 aluminum sheet
metal was thus formed incrementally by both processes and the forming result evaluated
by an optical 3D measurement system. For this purpose, a forming strategy for
electromagnetic incremental forming (EMIF) was developed, tested and adapted to
the electrohydraulic incremental forming process (EHIF). The discharge energy,
the tool displacement and the pressure field of the forming zone were determined
as relevant parameters for the definition of an adequate tool path strategy. It
was found that the EHIF process is less affected by larger distances between the
tool and the blank, while this is a critical variable for force application to
the component during EMIF. On the other hand, the more uniform pressure distribution
of the EMIF process is advantageous for forming large steady component areas.
author:
- first_name: Maik
full_name: Holzmüller, Maik
id: '82645'
last_name: Holzmüller
- first_name: Maik
full_name: Linnemann, Maik
last_name: Linnemann
- first_name: Werner
full_name: Homberg, Werner
id: '233'
last_name: Homberg
- first_name: Verena
full_name: Psyk, Verena
last_name: Psyk
- first_name: 'Verena '
full_name: 'Kräusel, Verena '
last_name: Kräusel
- first_name: Janika
full_name: Kroos, Janika
last_name: Kroos
citation:
ama: 'Holzmüller M, Linnemann M, Homberg W, Psyk V, Kräusel V, Kroos J. Proof of
concept for incremental sheet metal forming by means of electromagnetic and electrohydraulic
high-speed forming. In: Materials Research Proceedings. Vol 25. Materials
Research Forum LLC; 2023:11-18. doi:10.21741/9781644902417-2'
apa: Holzmüller, M., Linnemann, M., Homberg, W., Psyk, V., Kräusel, V., & Kroos,
J. (2023). Proof of concept for incremental sheet metal forming by means of electromagnetic
and electrohydraulic high-speed forming. Materials Research Proceedings,
25, 11–18. https://doi.org/10.21741/9781644902417-2
bibtex: '@inproceedings{Holzmüller_Linnemann_Homberg_Psyk_Kräusel_Kroos_2023, title={Proof
of concept for incremental sheet metal forming by means of electromagnetic and
electrohydraulic high-speed forming}, volume={25}, DOI={10.21741/9781644902417-2},
booktitle={Materials Research Proceedings}, publisher={Materials Research Forum
LLC}, author={Holzmüller, Maik and Linnemann, Maik and Homberg, Werner and Psyk,
Verena and Kräusel, Verena and Kroos, Janika}, year={2023}, pages={11–18} }'
chicago: Holzmüller, Maik, Maik Linnemann, Werner Homberg, Verena Psyk, Verena Kräusel,
and Janika Kroos. “Proof of Concept for Incremental Sheet Metal Forming by Means
of Electromagnetic and Electrohydraulic High-Speed Forming.” In Materials Research
Proceedings, 25:11–18. Materials Research Forum LLC, 2023. https://doi.org/10.21741/9781644902417-2.
ieee: 'M. Holzmüller, M. Linnemann, W. Homberg, V. Psyk, V. Kräusel, and J. Kroos,
“Proof of concept for incremental sheet metal forming by means of electromagnetic
and electrohydraulic high-speed forming,” in Materials Research Proceedings,
Nürnberg, 2023, vol. 25, pp. 11–18, doi: 10.21741/9781644902417-2.'
mla: Holzmüller, Maik, et al. “Proof of Concept for Incremental Sheet Metal Forming
by Means of Electromagnetic and Electrohydraulic High-Speed Forming.” Materials
Research Proceedings, vol. 25, Materials Research Forum LLC, 2023, pp. 11–18,
doi:10.21741/9781644902417-2.
short: 'M. Holzmüller, M. Linnemann, W. Homberg, V. Psyk, V. Kräusel, J. Kroos,
in: Materials Research Proceedings, Materials Research Forum LLC, 2023, pp. 11–18.'
conference:
end_date: 2023-04-05
location: Nürnberg
name: 20th International Conference on Sheet Metal 2023
start_date: 2023-04-02
date_created: 2023-03-17T10:23:18Z
date_updated: 2023-05-02T11:40:24Z
department:
- _id: '156'
doi: 10.21741/9781644902417-2
intvolume: ' 25'
keyword:
- Incremental Sheet Forming
- Aluminium
- High-Speed Forming
language:
- iso: eng
page: 11-18
publication: Materials Research Proceedings
publication_identifier:
issn:
- 2474-395X
publication_status: published
publisher: Materials Research Forum LLC
quality_controlled: '1'
status: public
title: Proof of concept for incremental sheet metal forming by means of electromagnetic
and electrohydraulic high-speed forming
type: conference
user_id: '82645'
volume: 25
year: '2023'
...
---
_id: '60647'
abstract:
- lang: ger
text: Das umformtechnische Fügeverfahren Clinchen ermöglicht ein energiearmes Fügen
von Blechen und dient traditionell der Übertragung mechanischer Kräfte. Neue Einsatzgebiete
erfordern eine elektrische oder thermische Leitfähigkeit, sodass es notwendig
ist, das Clinchen entsprechend zu qualifizieren. Es wurden Untersuchungen an Aluminiumverbindungen
durchgeführt, welche mit hohen Kurzzeitströmen belastet wurden. Der Einfluss verschiedener
Oberflächenvorbehandlungen wurde betrachtet. Als Charakterisierungsmethode für
die Bauteile und die geclinchten Fügeverbindungen wird die Messung des elektrischen
Widerstandes herangezogen. Die untersuchten Clinchverbindungen sind fähig, die
im Fehlerfall auftretenden Kurzzeitströme zu übertragen. Der Oberflächenzustand
übt dabei einen signifikanten Einfluss auf die Clinchpunktausbildung und damit
auf deren elektrische Eigenschaften aus. Durch Messung des elektrischen Widerstandes
vor und nach dem Fügen sowie nach einer Bestromung mit Fehlerströmen, kann das
Kontaktverhalten qualifiziert werden.
author:
- first_name: Gregor
full_name: Reschke, Gregor
id: '98812'
last_name: Reschke
- first_name: Jan
full_name: Kalich, Jan
last_name: Kalich
- first_name: Uwe
full_name: Füssel, Uwe
last_name: Füssel
citation:
ama: 'Reschke G, Kalich J, Füssel U. Methoden zur Charakterisierung der Bindemechanismen
bei geclinchten elektrischen Kontakten. In: Zimmermann M, DGM - Deutsche Gesellschaft
für Materialkunde e.V. , eds. Tagung Werkstoffprüfung 2022: Werkstoffe und
Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung.
; 2023:374-379.'
apa: 'Reschke, G., Kalich, J., & Füssel, U. (2023). Methoden zur Charakterisierung
der Bindemechanismen bei geclinchten elektrischen Kontakten. In M. Zimmermann
& DGM - Deutsche Gesellschaft für Materialkunde e.V. (Eds.), Tagung Werkstoffprüfung
2022: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung
– Schadensvermeidung (pp. 374–379).'
bibtex: '@inproceedings{Reschke_Kalich_Füssel_2023, place={Sankt Augustin}, title={Methoden
zur Charakterisierung der Bindemechanismen bei geclinchten elektrischen Kontakten},
booktitle={Tagung Werkstoffprüfung 2022: Werkstoffe und Bauteile auf dem Prüfstand,
Prüftechnik – Kennwertermittlung – Schadensvermeidung}, author={Reschke, Gregor
and Kalich, Jan and Füssel, Uwe}, editor={Zimmermann, Martina and DGM - Deutsche
Gesellschaft für Materialkunde e.V. }, year={2023}, pages={374–379} }'
chicago: 'Reschke, Gregor, Jan Kalich, and Uwe Füssel. “Methoden zur Charakterisierung
der Bindemechanismen bei geclinchten elektrischen Kontakten.” In Tagung Werkstoffprüfung
2022: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung
– Schadensvermeidung, edited by Martina Zimmermann and DGM - Deutsche Gesellschaft
für Materialkunde e.V. , 374–79. Sankt Augustin, 2023.'
ieee: 'G. Reschke, J. Kalich, and U. Füssel, “Methoden zur Charakterisierung der
Bindemechanismen bei geclinchten elektrischen Kontakten,” in Tagung Werkstoffprüfung
2022: Werkstoffe und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung
– Schadensvermeidung, Dresden, 2023, pp. 374–379.'
mla: 'Reschke, Gregor, et al. “Methoden zur Charakterisierung der Bindemechanismen
bei geclinchten elektrischen Kontakten.” Tagung Werkstoffprüfung 2022: Werkstoffe
und Bauteile auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung,
edited by Martina Zimmermann and DGM - Deutsche Gesellschaft für Materialkunde
e.V. , 2023, pp. 374–79.'
short: 'G. Reschke, J. Kalich, U. Füssel, in: M. Zimmermann, DGM - Deutsche Gesellschaft
für Materialkunde e.V. (Eds.), Tagung Werkstoffprüfung 2022: Werkstoffe und Bauteile
auf dem Prüfstand, Prüftechnik – Kennwertermittlung – Schadensvermeidung, Sankt
Augustin, 2023, pp. 374–379.'
conference:
end_date: 2022-10-28
location: Dresden
name: Tagung Werkstoffprüfung 2022
start_date: 2022-10-27
corporate_editor:
- 'DGM - Deutsche Gesellschaft für Materialkunde e.V. '
date_created: 2025-07-18T11:10:04Z
date_updated: 2026-05-12T13:36:29Z
department:
- _id: '630'
editor:
- first_name: Martina
full_name: Zimmermann, Martina
last_name: Zimmermann
extern: '1'
keyword:
- Clinchen
- Bindemechanismen
- elektrische Eigenschaften
- Aluminium
- Kurzzeitbestromung
language:
- iso: ger
page: 374-379
place: Sankt Augustin
project:
- _id: '131'
name: 'TRR 285 - A: TRR 285 - Project Area A'
- _id: '138'
name: 'TRR 285 – A04: TRR 285 - Subproject A04'
- _id: '130'
name: 'TRR 285: Methodenentwicklung zur mechanischen Fügbarkeit in wandlungsfähigen
Prozessketten'
publication: 'Tagung Werkstoffprüfung 2022: Werkstoffe und Bauteile auf dem Prüfstand,
Prüftechnik – Kennwertermittlung – Schadensvermeidung'
publication_identifier:
isbn:
- 978-3-88355-430-3
publication_status: published
quality_controlled: '1'
status: public
title: Methoden zur Charakterisierung der Bindemechanismen bei geclinchten elektrischen
Kontakten
type: conference
user_id: '7850'
year: '2023'
...
---
_id: '24589'
abstract:
- lang: eng
text: "Additive manufacturing, e.g. by laser powder bed fusion (LPBF), is very attractive
for lightweight constructions, as complex and stress-optimised structures integrating
multiple functions can be produced within one process. Unfortunately, high strength
AlZnMgCu alloys tend to hot cracking during LPBF\r\nand thus have not so far been
applicable. In this work the melting and solidification behaviour of\r\nAlZnMgCu
alloy powder variants with particle surface inoculation was analysed by Differential
Fast\r\nScanning Calorimetry. The aim is to establish a method that makes it possible
to assess powder modifications in terms of their suitability for LPBF on a laboratory
scale requiring only small amounts of powder.\r\nTherefore, solidification undercooling
is evaluated at cooling rates relevant for LPBF. A method for the\r\ntemperature
correction and normalisation of the DFSC results is proposed. Two ways of powder
modification were tested for the powder particles surface inoculation by titanium
carbide (TiC) nanoparticles:\r\nvia wet-chemical deposition and via mechanical
mixing.\r\nA low undercooling from DFSC correlates with a low number of cracks
of LPBF-manufactured cubes. It\r\nappears that a reduced undercooling combined
with reduced solidification onset scatter indicates the\r\npossibility of crack-free
LPBF of alloys that otherwise tend to hot cracking."
article_number: '109677'
article_type: original
author:
- first_name: Evgeny
full_name: Zhuravlev, Evgeny
last_name: Zhuravlev
- first_name: Benjamin
full_name: Milkereit, Benjamin
last_name: Milkereit
- first_name: Bin
full_name: Yang, Bin
last_name: Yang
- first_name: Steffen
full_name: Heiland, Steffen
last_name: Heiland
- first_name: Pascal
full_name: Vieth, Pascal
last_name: Vieth
- first_name: Markus
full_name: Voigt, Markus
last_name: Voigt
- first_name: Mirko
full_name: Schaper, Mirko
last_name: Schaper
- first_name: Guido
full_name: Grundmeier, Guido
last_name: Grundmeier
- first_name: Christoph
full_name: Schick, Christoph
last_name: Schick
- first_name: Olaf
full_name: Kessler, Olaf
last_name: Kessler
citation:
ama: Zhuravlev E, Milkereit B, Yang B, et al. Assessment of AlZnMgCu alloy powder
modification for crack-free laser powder bed fusion by differential fast scanning
calorimetry. Materials & Design. Published online 2021. doi:10.1016/j.matdes.2021.109677
apa: Zhuravlev, E., Milkereit, B., Yang, B., Heiland, S., Vieth, P., Voigt, M.,
Schaper, M., Grundmeier, G., Schick, C., & Kessler, O. (2021). Assessment
of AlZnMgCu alloy powder modification for crack-free laser powder bed fusion by
differential fast scanning calorimetry. Materials & Design, Article
109677. https://doi.org/10.1016/j.matdes.2021.109677
bibtex: '@article{Zhuravlev_Milkereit_Yang_Heiland_Vieth_Voigt_Schaper_Grundmeier_Schick_Kessler_2021,
title={Assessment of AlZnMgCu alloy powder modification for crack-free laser powder
bed fusion by differential fast scanning calorimetry}, DOI={10.1016/j.matdes.2021.109677},
number={109677}, journal={Materials & Design}, author={Zhuravlev, Evgeny and
Milkereit, Benjamin and Yang, Bin and Heiland, Steffen and Vieth, Pascal and Voigt,
Markus and Schaper, Mirko and Grundmeier, Guido and Schick, Christoph and Kessler,
Olaf}, year={2021} }'
chicago: Zhuravlev, Evgeny, Benjamin Milkereit, Bin Yang, Steffen Heiland, Pascal
Vieth, Markus Voigt, Mirko Schaper, Guido Grundmeier, Christoph Schick, and Olaf
Kessler. “Assessment of AlZnMgCu Alloy Powder Modification for Crack-Free Laser
Powder Bed Fusion by Differential Fast Scanning Calorimetry.” Materials &
Design, 2021. https://doi.org/10.1016/j.matdes.2021.109677.
ieee: 'E. Zhuravlev et al., “Assessment of AlZnMgCu alloy powder modification
for crack-free laser powder bed fusion by differential fast scanning calorimetry,”
Materials & Design, Art. no. 109677, 2021, doi: 10.1016/j.matdes.2021.109677.'
mla: Zhuravlev, Evgeny, et al. “Assessment of AlZnMgCu Alloy Powder Modification
for Crack-Free Laser Powder Bed Fusion by Differential Fast Scanning Calorimetry.”
Materials & Design, 109677, 2021, doi:10.1016/j.matdes.2021.109677.
short: E. Zhuravlev, B. Milkereit, B. Yang, S. Heiland, P. Vieth, M. Voigt, M. Schaper,
G. Grundmeier, C. Schick, O. Kessler, Materials & Design (2021).
date_created: 2021-09-17T08:38:58Z
date_updated: 2022-01-06T06:56:29Z
department:
- _id: '9'
- _id: '158'
- _id: '219'
doi: 10.1016/j.matdes.2021.109677
keyword:
- Aluminium alloy 7075
- Differential fast scanning calorimetry
- Solidification
- Undercooling
- Additive manufacturing
language:
- iso: eng
publication: Materials & Design
publication_identifier:
issn:
- 0264-1275
publication_status: published
status: public
title: Assessment of AlZnMgCu alloy powder modification for crack-free laser powder
bed fusion by differential fast scanning calorimetry
type: journal_article
user_id: '77250'
year: '2021'
...
---
_id: '37579'
abstract:
- lang: ger
text: 'Leichtmetalle mit einem breiten Eigenschaftsspektrum gewährleisten die Realisierung
ressourcenschonender Produkte und ermöglichen die Intensivierung sortenreiner
Kreislaufwirtschaften. Die vorliegende Arbeit untersucht einen wärmeunterstützten
Ansatz zur Erhöhung der Formgebungsgrenzen stark kaltverfestigter AlMg4,5 Blechwerkstoffe
bei gleichzeitiger Beschränkung des Festigkeitsverlustes durch Erholungseffekte.
Experimentelle Untersuchungen stellen eine wissenschaftlich fundierte Erkenntnisbasis
über die werkstofftechnischen Wirkzusammenhänge des untersuchten Prozesses dar.
Gepaart mit an realen Bauteilgeometrien validierten numerischen Simulationsmodellen
legt diese Arbeit einen methodischen Grundstein für die industrielle Umsetzung
des hier untersuchten Blechumformprozesses. Die erzielte mittlere Dehngrenze des
exemplarisch untersuchten Bauteils übersteigt die Dehngrenze eines konventionellen
AlMg4,5 Werkstoffes um 190 %. Mit 320 MPa entspricht sie dem Festigkeitsniveau
des walzharten Blechhalbzeuges im Lieferzustand, ein Wert, der nach dem aktuellen
Stand der Technik auf Bauteilebene ausschließlich mit aushärtbaren AlMgSi Legierungen
darstellbar ist. '
author:
- first_name: Alan Adam
full_name: Camberg, Alan Adam
id: '60544'
last_name: Camberg
citation:
ama: Camberg AA. Festigkeitssteigerung von Aluminiumblechformteilen der 5000-Serie
durch Erweiterung der Formgebungsgrenzen stark kaltverfestigter Ausgangswerkstoffe.
Vol 2021,52. Shaker Verlag; 2021. doi:10.2370/9783844082715
apa: 'Camberg, A. A. (2021). Festigkeitssteigerung von Aluminiumblechformteilen
der 5000-Serie durch Erweiterung der Formgebungsgrenzen stark kaltverfestigter
Ausgangswerkstoffe: Vol. 2021,52. Shaker Verlag. https://doi.org/10.2370/9783844082715'
bibtex: '@book{Camberg_2021, series={Schriftenreihe Institut für Leichtbau mit Hybridsystemen},
title={Festigkeitssteigerung von Aluminiumblechformteilen der 5000-Serie durch
Erweiterung der Formgebungsgrenzen stark kaltverfestigter Ausgangswerkstoffe},
volume={2021,52}, DOI={10.2370/9783844082715},
publisher={Shaker Verlag}, author={Camberg, Alan Adam}, year={2021}, collection={Schriftenreihe
Institut für Leichtbau mit Hybridsystemen} }'
chicago: Camberg, Alan Adam. Festigkeitssteigerung von Aluminiumblechformteilen
der 5000-Serie durch Erweiterung der Formgebungsgrenzen stark kaltverfestigter
Ausgangswerkstoffe. Vol. 2021,52. Schriftenreihe Institut für Leichtbau mit
Hybridsystemen. Shaker Verlag, 2021. https://doi.org/10.2370/9783844082715.
ieee: A. A. Camberg, Festigkeitssteigerung von Aluminiumblechformteilen der 5000-Serie
durch Erweiterung der Formgebungsgrenzen stark kaltverfestigter Ausgangswerkstoffe,
vol. 2021,52. Shaker Verlag, 2021.
mla: Camberg, Alan Adam. Festigkeitssteigerung von Aluminiumblechformteilen der
5000-Serie durch Erweiterung der Formgebungsgrenzen stark kaltverfestigter Ausgangswerkstoffe.
Shaker Verlag, 2021, doi:10.2370/9783844082715.
short: A.A. Camberg, Festigkeitssteigerung von Aluminiumblechformteilen der 5000-Serie
durch Erweiterung der Formgebungsgrenzen stark kaltverfestigter Ausgangswerkstoffe,
Shaker Verlag, 2021.
date_created: 2023-01-19T11:38:04Z
date_updated: 2023-01-19T11:38:10Z
department:
- _id: '9'
- _id: '149'
- _id: '321'
doi: 10.2370/9783844082715
extern: '1'
keyword:
- Aluminium
- Blechumformung
- AlMg
- Materialmodellierung
- Duktiles Versagen
- Halbwarmumformung
- Automobil
- Leichtbau
- Uni-Alloy
- 5000-Serie
- '5182'
- GISSMO
language:
- iso: ger
page: '230'
publication_identifier:
isbn:
- 978-3-8440-8271-5
publication_status: published
publisher: Shaker Verlag
series_title: Schriftenreihe Institut für Leichtbau mit Hybridsystemen
status: public
supervisor:
- first_name: Thomas
full_name: Tröster, Thomas
id: '553'
last_name: Tröster
title: Festigkeitssteigerung von Aluminiumblechformteilen der 5000-Serie durch Erweiterung
der Formgebungsgrenzen stark kaltverfestigter Ausgangswerkstoffe
type: dissertation
user_id: '15952'
volume: 2021,52
year: '2021'
...
---
_id: '21436'
abstract:
- lang: eng
text: Ultrasonic wire bonding is a solid-state joining process, used in the electronics
industry to form electrical connections, e.g. to connect electrical terminals
within semiconductor modules. Many process parameters affect the bond strength,
such like the bond normal force, ultrasonic power, wire material and bonding frequency.
Today, process design, development, and optimization is most likely based on the
knowledge of process engineers and is mainly performed by experimental testing.
In this contribution, a newly developed simulation tool is presented, to reduce
time and costs and efficiently determine optimized process parameter. Based on
a co-simulation of MATLAB and ANSYS, the different physical phenomena of the wire
bonding process are considered using finite element simulation for the complex
plastic deformation of the wire and reduced order models for the transient dynamics
of the transducer, wire, substrate and bond formation. The model parameters such
as the coefficients of friction between bond tool and wire and between wire and
substrate were determined for aluminium and copper wire in experiments with a
test rig specially developed for the requirements of heavy wire bonding. To reduce
simulation time, for the finite element simulation a restart analysis and high
performance computing is utilized. Detailed analysis of the bond formation showed,
that the normal pressure distribution in the contact between wire and substrate
has high impact on bond formation and distribution of welded areas in the contact
area.
author:
- first_name: Reinhard
full_name: Schemmel, Reinhard
id: '28647'
last_name: Schemmel
- first_name: Viktor
full_name: Krieger, Viktor
last_name: Krieger
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: Schemmel R, Krieger V, Hemsel T, Sextro W. Co-simulation of MATLAB and ANSYS
for ultrasonic wire bonding process optimization. Microelectronics Reliability.
2021;119:114077. doi:https://doi.org/10.1016/j.microrel.2021.114077
apa: Schemmel, R., Krieger, V., Hemsel, T., & Sextro, W. (2021). Co-simulation
of MATLAB and ANSYS for ultrasonic wire bonding process optimization. Microelectronics
Reliability, 119, 114077. https://doi.org/10.1016/j.microrel.2021.114077
bibtex: '@article{Schemmel_Krieger_Hemsel_Sextro_2021, title={Co-simulation of MATLAB
and ANSYS for ultrasonic wire bonding process optimization}, volume={119}, DOI={https://doi.org/10.1016/j.microrel.2021.114077},
journal={Microelectronics Reliability}, author={Schemmel, Reinhard and Krieger,
Viktor and Hemsel, Tobias and Sextro, Walter}, year={2021}, pages={114077} }'
chicago: 'Schemmel, Reinhard, Viktor Krieger, Tobias Hemsel, and Walter Sextro.
“Co-Simulation of MATLAB and ANSYS for Ultrasonic Wire Bonding Process Optimization.”
Microelectronics Reliability 119 (2021): 114077. https://doi.org/10.1016/j.microrel.2021.114077.'
ieee: 'R. Schemmel, V. Krieger, T. Hemsel, and W. Sextro, “Co-simulation of MATLAB
and ANSYS for ultrasonic wire bonding process optimization,” Microelectronics
Reliability, vol. 119, p. 114077, 2021, doi: https://doi.org/10.1016/j.microrel.2021.114077.'
mla: Schemmel, Reinhard, et al. “Co-Simulation of MATLAB and ANSYS for Ultrasonic
Wire Bonding Process Optimization.” Microelectronics Reliability, vol.
119, 2021, p. 114077, doi:https://doi.org/10.1016/j.microrel.2021.114077.
short: R. Schemmel, V. Krieger, T. Hemsel, W. Sextro, Microelectronics Reliability
119 (2021) 114077.
date_created: 2021-03-10T09:37:02Z
date_updated: 2023-09-21T14:15:33Z
department:
- _id: '151'
doi: https://doi.org/10.1016/j.microrel.2021.114077
intvolume: ' 119'
keyword:
- Ultrasonic heavy wire bonding
- Co-simulation
- ANSYS
- MATLAB
- Process optimization
- Friction coefficient
- Copper-copper
- Aluminium-copper
language:
- iso: eng
page: '114077'
publication: Microelectronics Reliability
publication_identifier:
issn:
- 0026-2714
publication_status: published
quality_controlled: '1'
status: public
title: Co-simulation of MATLAB and ANSYS for ultrasonic wire bonding process optimization
type: journal_article
user_id: '210'
volume: 119
year: '2021'
...
---
_id: '19973'
abstract:
- lang: eng
text: As a result of lightweight design, increased use is being made of high-strength
steel and aluminium in car bodies. Self-piercing riveting is an established technique
for joining these materials. The dissimilar properties of the two materials have
led to a number of different rivet geometries in the past. Each rivet geometry
fulfils the requirements of the materials within a limited range. In the present
investigation, an improved rivet geometry is developed, which permits the reliable
joining of two material combinations that could only be joined by two different
rivet geometries up until now. Material combination 1 consists of high-strength
steel on both sides, while material combination 2 comprises aluminium on the punch
side and high-strength steel on the die side. The material flow and the stress
and strain conditions prevailing during the joining process are analysed by means
of numerical simulation. The rivet geometry is then improved step-by-step on the
basis of this analysis. Finally, the improved rivet geometry is manufactured and
the findings of the investigation are verified in experimental joining tests.
article_type: original
author:
- first_name: Benedikt
full_name: Uhe, Benedikt
id: '38131'
last_name: Uhe
- first_name: Clara-Maria
full_name: Kuball, Clara-Maria
last_name: Kuball
- first_name: Marion
full_name: Merklein, Marion
last_name: Merklein
- first_name: Gerson
full_name: Meschut, Gerson
id: '32056'
last_name: Meschut
orcid: 0000-0002-2763-1246
citation:
ama: Uhe B, Kuball C-M, Merklein M, Meschut G. Improvement of a rivet geometry for
the self-piercing riveting of high-strength steel and multi-material joints. Production
Engineering. 2020;14:417-423. doi:10.1007/s11740-020-00973-w
apa: Uhe, B., Kuball, C.-M., Merklein, M., & Meschut, G. (2020). Improvement
of a rivet geometry for the self-piercing riveting of high-strength steel and
multi-material joints. Production Engineering, 14, 417–423. https://doi.org/10.1007/s11740-020-00973-w
bibtex: '@article{Uhe_Kuball_Merklein_Meschut_2020, title={Improvement of a rivet
geometry for the self-piercing riveting of high-strength steel and multi-material
joints}, volume={14}, DOI={10.1007/s11740-020-00973-w},
journal={Production Engineering}, author={Uhe, Benedikt and Kuball, Clara-Maria
and Merklein, Marion and Meschut, Gerson}, year={2020}, pages={417–423} }'
chicago: 'Uhe, Benedikt, Clara-Maria Kuball, Marion Merklein, and Gerson Meschut.
“Improvement of a Rivet Geometry for the Self-Piercing Riveting of High-Strength
Steel and Multi-Material Joints.” Production Engineering 14 (2020): 417–23.
https://doi.org/10.1007/s11740-020-00973-w.'
ieee: 'B. Uhe, C.-M. Kuball, M. Merklein, and G. Meschut, “Improvement of a rivet
geometry for the self-piercing riveting of high-strength steel and multi-material
joints,” Production Engineering, vol. 14, pp. 417–423, 2020, doi: 10.1007/s11740-020-00973-w.'
mla: Uhe, Benedikt, et al. “Improvement of a Rivet Geometry for the Self-Piercing
Riveting of High-Strength Steel and Multi-Material Joints.” Production Engineering,
vol. 14, 2020, pp. 417–23, doi:10.1007/s11740-020-00973-w.
short: B. Uhe, C.-M. Kuball, M. Merklein, G. Meschut, Production Engineering 14
(2020) 417–423.
date_created: 2020-10-12T08:14:13Z
date_updated: 2026-02-27T10:41:55Z
department:
- _id: '157'
doi: 10.1007/s11740-020-00973-w
intvolume: ' 14'
keyword:
- Self-piercing riveting
- Joining technology
- Rivet geometry
- Multi-material design
- High-strength steel
- Aluminium
language:
- iso: eng
page: 417-423
publication: Production Engineering
publication_status: published
quality_controlled: '1'
status: public
title: Improvement of a rivet geometry for the self-piercing riveting of high-strength
steel and multi-material joints
type: journal_article
user_id: '53912'
volume: 14
year: '2020'
...
---
_id: '9999'
abstract:
- lang: eng
text: Ultrasonic wire bonding is an indispensable process in the industrial manufacturing
of semiconductor devices. Copper wire is increasingly replacing the well-established
aluminium wire because of its superior electrical, thermal and mechanical properties.
Copper wire processes differ significantly from aluminium processes and are more
sensitive to disturbances, which reduces the range of parameter values suitable
for a stable process. Disturbances can be compensated by an adaption of process
parameters, but finding suitable parameters manually is difficult and time-consuming.
This paper presents a physical model of the ultrasonic wire bonding process including
the friction contact between tool and wire. This model yields novel insights into
the process. A prototype of a multi-objective optimizing bonding machine (MOBM)
is presented. It uses multi-objective optimization, based on the complete process
model, to automatically select the best operating point as a compromise of concurrent
objectives.
author:
- first_name: Andreas
full_name: Unger, Andreas
last_name: Unger
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Michael
full_name: Brökelmann, Michael
last_name: Brökelmann
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Unger A, Hunstig M, Meyer T, Brökelmann M, Sextro W. Intelligent Production
of Wire Bonds using Multi-Objective Optimization – Insights, Opportunities and
Challenges. In: In Proceedings of IMAPS 2018 – 51st Symposium on Microelectronics,
Pasadena, CA, 2018. Vol Vol. 2018, No. 1, pp. 000572-000577. ; 2018. doi:10.4071/2380-4505-2018.1.000572'
apa: Unger, A., Hunstig, M., Meyer, T., Brökelmann, M., & Sextro, W. (2018).
Intelligent Production of Wire Bonds using Multi-Objective Optimization – Insights,
Opportunities and Challenges. In In Proceedings of IMAPS 2018 – 51st Symposium
on Microelectronics, Pasadena, CA, 2018 (Vol. Vol. 2018, No. 1, pp. 000572-000577.).
https://doi.org/10.4071/2380-4505-2018.1.000572
bibtex: '@inproceedings{Unger_Hunstig_Meyer_Brökelmann_Sextro_2018, title={Intelligent
Production of Wire Bonds using Multi-Objective Optimization – Insights, Opportunities
and Challenges}, volume={Vol. 2018, No. 1, pp. 000572-000577.}, DOI={10.4071/2380-4505-2018.1.000572},
booktitle={In Proceedings of IMAPS 2018 – 51st Symposium on Microelectronics,
Pasadena, CA, 2018}, author={Unger, Andreas and Hunstig, Matthias and Meyer, Tobias
and Brökelmann, Michael and Sextro, Walter}, year={2018} }'
chicago: Unger, Andreas, Matthias Hunstig, Tobias Meyer, Michael Brökelmann, and
Walter Sextro. “Intelligent Production of Wire Bonds Using Multi-Objective Optimization
– Insights, Opportunities and Challenges.” In In Proceedings of IMAPS 2018
– 51st Symposium on Microelectronics, Pasadena, CA, 2018, Vol. Vol. 2018,
No. 1, pp. 000572-000577., 2018. https://doi.org/10.4071/2380-4505-2018.1.000572.
ieee: A. Unger, M. Hunstig, T. Meyer, M. Brökelmann, and W. Sextro, “Intelligent
Production of Wire Bonds using Multi-Objective Optimization – Insights, Opportunities
and Challenges,” in In Proceedings of IMAPS 2018 – 51st Symposium on Microelectronics,
Pasadena, CA, 2018, 2018, vol. Vol. 2018, No. 1, pp. 000572-000577.
mla: Unger, Andreas, et al. “Intelligent Production of Wire Bonds Using Multi-Objective
Optimization – Insights, Opportunities and Challenges.” In Proceedings of IMAPS
2018 – 51st Symposium on Microelectronics, Pasadena, CA, 2018, vol. Vol. 2018,
No. 1, pp. 000572-000577., 2018, doi:10.4071/2380-4505-2018.1.000572.
short: 'A. Unger, M. Hunstig, T. Meyer, M. Brökelmann, W. Sextro, in: In Proceedings
of IMAPS 2018 – 51st Symposium on Microelectronics, Pasadena, CA, 2018, 2018.'
date_created: 2019-05-27T10:27:45Z
date_updated: 2020-05-07T05:33:56Z
department:
- _id: '151'
doi: 10.4071/2380-4505-2018.1.000572
keyword:
- wire bonding
- multi-objective optimization
- process model
- copper wire
- self-optimization
language:
- iso: eng
project:
- _id: '92'
grant_number: 02 PQ2210
name: Intelligente Herstellung zuverlässiger Kupferbondverbindungen
publication: In Proceedings of IMAPS 2018 – 51st Symposium on Microelectronics, Pasadena,
CA, 2018
quality_controlled: '1'
status: public
title: Intelligent Production of Wire Bonds using Multi-Objective Optimization – Insights,
Opportunities and Challenges
type: conference
user_id: '210'
volume: Vol. 2018, No. 1, pp. 000572-000577.
year: '2018'
...
---
_id: '13186'
abstract:
- lang: eng
text: Ligands DMEG6etqu, TMG6etqu, DMEG6buqu, and TMG6buqu were developed on the
basis of guanidine quinoline (GUAqu) ligands 1,3-dimethyl-N-(quinolin-8-yl)imidazolidin-2-imine
(DMEGqu) and 1,1,3,3-tetramethyl-2-(quinolin-8-yl)guanidine (TMGqu). These ligands
feature an alkyl substituent at the C6 of the quinoline backbone. The synthetic
strategy developed here enables inexpensive syntheses of any kind of C6-substituted
GUAqu ligands. On one hand, the alkylation increases the solubility of corresponding
copper complexes in apolar atom transfer radical polymerization (ATRP) monomers
like styrene. On the other hand, it has a significant electronic influence and
thus an effect on the donor properties of the new ligands. Seven CuI and CuII
complexes of DMEG6etqu and TMG6etqu have been crystallized and were studied with
regard to their structural and electrochemical properties. CuI and CuII complexes
of DMEG6buqu and TMG6buqu turned out to be perfectly soluble in pure styrene even
at room temperature, which makes them excellent catalysts in the ATRP of apolar
monomers. The key characteristics of the ATRP equilibrium, KATRP and kact, were
determined for the new complexes. In addition, we used our recently developed
DFT methodology, NBO analysis, and isodesmic reactions to predict the influence
of the introduced alkyl substituents. It turned out that high conformational freedom
in the complex structures leads to a significant uncertainty in prediction of
the thermodynamic properties.
author:
- first_name: Thomas
full_name: Rösener, Thomas
last_name: Rösener
- first_name: Alexander
full_name: Hoffmann, Alexander
last_name: Hoffmann
- first_name: Sonja
full_name: Herres-Pawlis, Sonja
last_name: Herres-Pawlis
citation:
ama: 'Rösener T, Hoffmann A, Herres-Pawlis S. Next Generation of Guanidine Quinoline
Copper Complexes for Highly Controlled ATRP: Influence of Backbone Substitution
on Redox Chemistry and Solubility. European Journal of Inorganic Chemistry.
2018;2018(27):3164-3175. doi:10.1002/ejic.201800511'
apa: 'Rösener, T., Hoffmann, A., & Herres-Pawlis, S. (2018). Next Generation
of Guanidine Quinoline Copper Complexes for Highly Controlled ATRP: Influence
of Backbone Substitution on Redox Chemistry and Solubility. European Journal
of Inorganic Chemistry, 2018(27), 3164–3175. https://doi.org/10.1002/ejic.201800511'
bibtex: '@article{Rösener_Hoffmann_Herres-Pawlis_2018, title={Next Generation of
Guanidine Quinoline Copper Complexes for Highly Controlled ATRP: Influence of
Backbone Substitution on Redox Chemistry and Solubility}, volume={2018}, DOI={10.1002/ejic.201800511}, number={27},
journal={European Journal of Inorganic Chemistry}, author={Rösener, Thomas and
Hoffmann, Alexander and Herres-Pawlis, Sonja}, year={2018}, pages={3164–3175}
}'
chicago: 'Rösener, Thomas, Alexander Hoffmann, and Sonja Herres-Pawlis. “Next Generation
of Guanidine Quinoline Copper Complexes for Highly Controlled ATRP: Influence
of Backbone Substitution on Redox Chemistry and Solubility.” European Journal
of Inorganic Chemistry 2018, no. 27 (2018): 3164–75. https://doi.org/10.1002/ejic.201800511.'
ieee: 'T. Rösener, A. Hoffmann, and S. Herres-Pawlis, “Next Generation of Guanidine
Quinoline Copper Complexes for Highly Controlled ATRP: Influence of Backbone Substitution
on Redox Chemistry and Solubility,” European Journal of Inorganic Chemistry,
vol. 2018, no. 27, pp. 3164–3175, 2018.'
mla: 'Rösener, Thomas, et al. “Next Generation of Guanidine Quinoline Copper Complexes
for Highly Controlled ATRP: Influence of Backbone Substitution on Redox Chemistry
and Solubility.” European Journal of Inorganic Chemistry, vol. 2018, no.
27, 2018, pp. 3164–75, doi:10.1002/ejic.201800511.'
short: T. Rösener, A. Hoffmann, S. Herres-Pawlis, European Journal of Inorganic
Chemistry 2018 (2018) 3164–3175.
date_created: 2019-09-11T11:00:06Z
date_updated: 2022-01-06T06:51:30Z
doi: 10.1002/ejic.201800511
intvolume: ' 2018'
issue: '27'
keyword:
- Copper
- Polymerization
- Redox chemistry
- Structure elucidation
- Ligand effects
language:
- iso: eng
page: 3164-3175
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: European Journal of Inorganic Chemistry
status: public
title: 'Next Generation of Guanidine Quinoline Copper Complexes for Highly Controlled
ATRP: Influence of Backbone Substitution on Redox Chemistry and Solubility'
type: journal_article
user_id: '40778'
volume: 2018
year: '2018'
...
---
_id: '13187'
abstract:
- lang: eng
text: Abstract The reaction of Cu(I) bisguanidine complexes with nitric oxide and
the formation of intermediate species were monitored via UV-vis spectroscopy at
low temperature, with the occurrence of characteristic absorption bands. The origin
of the emerging species and their character were substantiated by electron paramagnetic
resonance (EPR) measurements and density functional theory (DFT) studies showing
a delocalized {CuNO}11 radical species. Furthermore, this system was transferred
to the SuperFocus mixer setup, which allows rapid mixing and the determination
of decay constants at ambient temperatures of the thermally sensitive species.
However, these experiments demonstrated the limits of these systems, such as the
NO saturation in organic solvents and a preferably precise temperature control
within the SuperFocus mixer, which should be addressed in the future.
author:
- first_name: Alexander
full_name: Oppermann, Alexander
last_name: Oppermann
- first_name: Larissa
full_name: Laurini, Larissa
last_name: Laurini
- first_name: Fabian
full_name: Etscheidt, Fabian
last_name: Etscheidt
- first_name: Katharina
full_name: Hollmann, Katharina
last_name: Hollmann
- first_name: Florian
full_name: Strassl, Florian
last_name: Strassl
- first_name: Alexander
full_name: Hoffmann, Alexander
last_name: Hoffmann
- first_name: Daniela
full_name: Schurr, Daniela
last_name: Schurr
- first_name: Roland
full_name: Dittmeyer, Roland
last_name: Dittmeyer
- first_name: Günter
full_name: Rinke, Günter
last_name: Rinke
- first_name: Sonja
full_name: Herres-Pawlis, Sonja
last_name: Herres-Pawlis
citation:
ama: Oppermann A, Laurini L, Etscheidt F, et al. Detection of Copper Bisguanidine
NO Adducts by UV-vis Spectroscopy and a SuperFocus Mixer. Chemical Engineering
\& Technology. 2017;40(8):1475-1483. doi:10.1002/ceat.201600691
apa: Oppermann, A., Laurini, L., Etscheidt, F., Hollmann, K., Strassl, F., Hoffmann,
A., … Herres-Pawlis, S. (2017). Detection of Copper Bisguanidine NO Adducts by
UV-vis Spectroscopy and a SuperFocus Mixer. Chemical Engineering \& Technology,
40(8), 1475–1483. https://doi.org/10.1002/ceat.201600691
bibtex: '@article{Oppermann_Laurini_Etscheidt_Hollmann_Strassl_Hoffmann_Schurr_Dittmeyer_Rinke_Herres-Pawlis_2017,
title={Detection of Copper Bisguanidine NO Adducts by UV-vis Spectroscopy and
a SuperFocus Mixer}, volume={40}, DOI={10.1002/ceat.201600691},
number={8}, journal={Chemical Engineering \& Technology}, author={Oppermann,
Alexander and Laurini, Larissa and Etscheidt, Fabian and Hollmann, Katharina and
Strassl, Florian and Hoffmann, Alexander and Schurr, Daniela and Dittmeyer, Roland
and Rinke, Günter and Herres-Pawlis, Sonja}, year={2017}, pages={1475–1483} }'
chicago: 'Oppermann, Alexander, Larissa Laurini, Fabian Etscheidt, Katharina Hollmann,
Florian Strassl, Alexander Hoffmann, Daniela Schurr, Roland Dittmeyer, Günter
Rinke, and Sonja Herres-Pawlis. “Detection of Copper Bisguanidine NO Adducts by
UV-Vis Spectroscopy and a SuperFocus Mixer.” Chemical Engineering \& Technology
40, no. 8 (2017): 1475–83. https://doi.org/10.1002/ceat.201600691.'
ieee: A. Oppermann et al., “Detection of Copper Bisguanidine NO Adducts by
UV-vis Spectroscopy and a SuperFocus Mixer,” Chemical Engineering \& Technology,
vol. 40, no. 8, pp. 1475–1483, 2017.
mla: Oppermann, Alexander, et al. “Detection of Copper Bisguanidine NO Adducts by
UV-Vis Spectroscopy and a SuperFocus Mixer.” Chemical Engineering \& Technology,
vol. 40, no. 8, 2017, pp. 1475–83, doi:10.1002/ceat.201600691.
short: A. Oppermann, L. Laurini, F. Etscheidt, K. Hollmann, F. Strassl, A. Hoffmann,
D. Schurr, R. Dittmeyer, G. Rinke, S. Herres-Pawlis, Chemical Engineering \&
Technology 40 (2017) 1475–1483.
date_created: 2019-09-11T11:01:30Z
date_updated: 2022-01-06T06:51:30Z
doi: 10.1002/ceat.201600691
intvolume: ' 40'
issue: '8'
keyword:
- Copper guanidine complexes
- Nitric oxide
- SuperFocus mixer
language:
- iso: eng
page: 1475-1483
project:
- _id: '52'
name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Chemical Engineering \& Technology
status: public
title: Detection of Copper Bisguanidine NO Adducts by UV-vis Spectroscopy and a SuperFocus
Mixer
type: journal_article
user_id: '40778'
volume: 40
year: '2017'
...
---
_id: '9959'
abstract:
- lang: eng
text: Ultrasonic heavy wire bonding is a commonly used technology to conduct electrical
devices in power electronics. In order to facilitate powerful solutions combined
with an increased efficiency, involving a material change from aluminum to copper
wire as conductor material takes place in recent years. Due to the material related
properties, copper wire bonding requires significant higher bond processing parameters
such as bond force and ultrasonic power compared to aluminum which can lead to
damages or a failure of the bonded component. Therefore, a profound knowledge
of the processes prevailing during wire bonding is essential to optimize the application
of the copper wires and consequently to achieve the demands on quality and reliability.
The behavior of different natural surface oxides of aluminum and copper are assumed
to be one reason for the deviation in the required bond parameters. Accordingly,
the impact of differently pre-treated substrates surfaces on which the bonding
is applied were investigated in this study. First, all conditions investigated
(as-received, oxidefree, AlOx and the CuOx) were characterized by utilizing scanning
electron microscopy, energy dispersive X-ray spectroscopy, focused ion beam microscopy
and atomic force microscopy. In addition, hardness tests were performed as well
as perthometer measurements. Afterwards, a 500 $\mu$ m copper wire was bonded
on the generated surfaces investigated. In consideration of the roughness, shear
test of various bond times and microscopic images were evaluated. Finally, the
results were compared and discussed. Overall, the current study indicates that
an Al-oxide layer is beneficial for welding process in Cu wire bonding. On the
contrary, the Cu-oxide is detrimental and leads to a delayed welding of the joining
parts. Based on the obtained results, it can be expected that due to an ideal
set of Al-oxide layers, lower optimal bond parameters can used to reach high bond
strength with good reliability properties.
author:
- first_name: Florian
full_name: Eacock, Florian
last_name: Eacock
- first_name: Andreas
full_name: Unger, Andreas
last_name: Unger
- first_name: Paul
full_name: Eichwald, Paul
last_name: Eichwald
- first_name: Olexandr
full_name: Grydin, Olexandr
last_name: Grydin
- first_name: Florian
full_name: Hengsbach, Florian
last_name: Hengsbach
- first_name: Simon
full_name: Althoff, Simon
last_name: Althoff
- first_name: Mirko
full_name: Schaper, Mirko
last_name: Schaper
- first_name: Karsten
full_name: Guth, Karsten
last_name: Guth
citation:
ama: 'Eacock F, Unger A, Eichwald P, et al. Effect of different oxide layers on
the ultrasonic copper wire bond process. In: IEEE 66th Electronic Components
and Technology Conference. ; 2016:2111-2118. doi:10.1109/ECTC.2016.91'
apa: Eacock, F., Unger, A., Eichwald, P., Grydin, O., Hengsbach, F., Althoff, S.,
… Guth, K. (2016). Effect of different oxide layers on the ultrasonic copper wire
bond process. In IEEE 66th Electronic Components and Technology Conference
(pp. 2111–2118). https://doi.org/10.1109/ECTC.2016.91
bibtex: '@inproceedings{Eacock_Unger_Eichwald_Grydin_Hengsbach_Althoff_Schaper_Guth_2016,
title={Effect of different oxide layers on the ultrasonic copper wire bond process},
DOI={10.1109/ECTC.2016.91},
booktitle={IEEE 66th Electronic Components and Technology Conference}, author={Eacock,
Florian and Unger, Andreas and Eichwald, Paul and Grydin, Olexandr and Hengsbach,
Florian and Althoff, Simon and Schaper, Mirko and Guth, Karsten}, year={2016},
pages={2111–2118} }'
chicago: Eacock, Florian, Andreas Unger, Paul Eichwald, Olexandr Grydin, Florian
Hengsbach, Simon Althoff, Mirko Schaper, and Karsten Guth. “Effect of Different
Oxide Layers on the Ultrasonic Copper Wire Bond Process.” In IEEE 66th Electronic
Components and Technology Conference, 2111–18, 2016. https://doi.org/10.1109/ECTC.2016.91.
ieee: F. Eacock et al., “Effect of different oxide layers on the ultrasonic
copper wire bond process,” in IEEE 66th Electronic Components and Technology
Conference, 2016, pp. 2111–2118.
mla: Eacock, Florian, et al. “Effect of Different Oxide Layers on the Ultrasonic
Copper Wire Bond Process.” IEEE 66th Electronic Components and Technology Conference,
2016, pp. 2111–18, doi:10.1109/ECTC.2016.91.
short: 'F. Eacock, A. Unger, P. Eichwald, O. Grydin, F. Hengsbach, S. Althoff, M.
Schaper, K. Guth, in: IEEE 66th Electronic Components and Technology Conference,
2016, pp. 2111–2118.'
date_created: 2019-05-27T09:00:50Z
date_updated: 2019-09-16T10:38:59Z
department:
- _id: '151'
doi: 10.1109/ECTC.2016.91
keyword:
- Ultrasonic copper wire bonding
- Al-oxide
- Cuoxide
- oxide-free
- roughness
- morphology
language:
- iso: eng
page: 2111-2118
publication: IEEE 66th Electronic Components and Technology Conference
quality_controlled: '1'
status: public
title: Effect of different oxide layers on the ultrasonic copper wire bond process
type: conference
user_id: '55222'
year: '2016'
...
---
_id: '9966'
abstract:
- lang: eng
text: Usage of copper wire bonds allows to push power boundaries imposed by aluminum
wire bonds. Copper allows higher electrical, thermal and mechanical loads than
aluminum, which currently is the most commonly used material in heavy wire bonding.
This is the main driving factor for increased usage of copper in high power applications
such as wind turbines, locomotives or electric vehicles. At the same time, usage
of copper also increases tool wear and reduces the range of parameter values for
a stable process, making the process more challenging. To overcome these drawbacks,
parameter adaptation at runtime using self-optimization is desired. A self-optimizing
system is based on system objectives that evaluate and quantify system performance.
System parameters can be changed at runtime such that pre-selected objective values
are reached. For adaptation of bond process parameters, model-based self-optimization
is employed. Since it is based on a model of the system, the bond process was
modeled. In addition to static model parameters such as wire and substrate material
properties and vibration characteristics of transducer and tool, variable model
inputs are process parameters. Main simulation result is bonded area in the wiresubstrate
contact. This model is then used to find valid and optimal working points before
operation. The working point is composed of normal force and ultrasonic voltage
trajectories, which are usually determined experimentally. Instead, multiobjective
optimalization is used to compute trajectories that simultaneously optimize bond
quality, process duration, tool wear and probability of tool-substrate contacts.
The values of these objectives are computed using the process model. At runtime,
selection among pre-determined optimal working points is sufficient to prioritize
individual objectives. This way, the computationally expensive process of numerically
solving a multiobjective optimal control problem and the demanding high speed
bonding process are separated. To evaluate to what extent the pre-defined goals
of self-optimization are met, an offthe- shelf heavy wire bonding machine was
modified to allow for parameter adaptation and for transmitting of measurement
data at runtime. This data is received by an external computer system and evaluated
to select a new working point. Then, new process parameters are sent to the modified
bonding machine for use for subsequent bonds. With these components, a full self-optimizing
system has been implemented.
author:
- first_name: Tobias
full_name: Meyer , Tobias
last_name: 'Meyer '
- first_name: Andreas
full_name: Unger, Andreas
last_name: Unger
- first_name: Simon
full_name: Althoff, Simon
last_name: Althoff
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Michael
full_name: Brökelmann, Michael
last_name: Brökelmann
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- first_name: Karsten
full_name: Guth, Karsten
last_name: Guth
citation:
ama: 'Meyer T, Unger A, Althoff S, et al. Reliable Manufacturing of Heavy Copper
Wire Bonds Using Online Parameter Adaptation. In: IEEE 66th Electronic Components
and Technology Conference. ; 2016:622-628. doi:10.1109/ECTC.2016.215'
apa: Meyer , T., Unger, A., Althoff, S., Sextro, W., Brökelmann, M., Hunstig, M.,
& Guth, K. (2016). Reliable Manufacturing of Heavy Copper Wire Bonds Using
Online Parameter Adaptation. In IEEE 66th Electronic Components and Technology
Conference (pp. 622–628). https://doi.org/10.1109/ECTC.2016.215
bibtex: '@inproceedings{Meyer _Unger_Althoff_Sextro_Brökelmann_Hunstig_Guth_2016,
title={Reliable Manufacturing of Heavy Copper Wire Bonds Using Online Parameter
Adaptation}, DOI={10.1109/ECTC.2016.215},
booktitle={IEEE 66th Electronic Components and Technology Conference}, author={Meyer
, Tobias and Unger, Andreas and Althoff, Simon and Sextro, Walter and Brökelmann,
Michael and Hunstig, Matthias and Guth, Karsten}, year={2016}, pages={622–628}
}'
chicago: Meyer , Tobias, Andreas Unger, Simon Althoff, Walter Sextro, Michael Brökelmann,
Matthias Hunstig, and Karsten Guth. “Reliable Manufacturing of Heavy Copper Wire
Bonds Using Online Parameter Adaptation.” In IEEE 66th Electronic Components
and Technology Conference, 622–28, 2016. https://doi.org/10.1109/ECTC.2016.215.
ieee: T. Meyer et al., “Reliable Manufacturing of Heavy Copper Wire Bonds
Using Online Parameter Adaptation,” in IEEE 66th Electronic Components and
Technology Conference, 2016, pp. 622–628.
mla: Meyer , Tobias, et al. “Reliable Manufacturing of Heavy Copper Wire Bonds Using
Online Parameter Adaptation.” IEEE 66th Electronic Components and Technology
Conference, 2016, pp. 622–28, doi:10.1109/ECTC.2016.215.
short: 'T. Meyer , A. Unger, S. Althoff, W. Sextro, M. Brökelmann, M. Hunstig, K.
Guth, in: IEEE 66th Electronic Components and Technology Conference, 2016, pp.
622–628.'
date_created: 2019-05-27T09:17:26Z
date_updated: 2020-05-07T05:33:53Z
department:
- _id: '151'
doi: 10.1109/ECTC.2016.215
keyword:
- Self-optimization
- adaptive system
- bond process
- copper wire
language:
- iso: eng
page: 622-628
project:
- _id: '92'
grant_number: 02 PQ2210
name: Intelligente Herstellung zuverlässiger Kupferbondverbindungen
publication: IEEE 66th Electronic Components and Technology Conference
quality_controlled: '1'
status: public
title: Reliable Manufacturing of Heavy Copper Wire Bonds Using Online Parameter Adaptation
type: conference
user_id: '210'
year: '2016'
...
---
_id: '9868'
abstract:
- lang: eng
text: In order to increase mechanical strength, heat dissipation and ampacity and
to decrease failure through fatigue fracture, wedge copper wire bonding is being
introduced as a standard interconnection method for mass production. To achieve
the same process stability when using copper wire instead of aluminum wire a profound
understanding of the bonding process is needed. Due to the higher hardness of
copper compared to aluminum wire it is more difficult to approach the surfaces
of wire and substrate to a level where van der Waals forces are able to arise
between atoms. Also, enough friction energy referred to the total contact area
has to be generated to activate the surfaces. Therefore, a friction model is used
to simulate the joining process. This model calculates the resulting energy of
partial areas in the contact surface and provides information about the adhesion
process of each area. The focus here is on the arising of micro joints in the
contact area depending on the location in the contact and time. To validate the
model, different touchdown forces are used to vary the initial contact areas of
wire and substrate. Additionally, a piezoelectric tri-axial force sensor is built
up to identify the known phases of pre-deforming, cleaning, adhering and diffusing
for the real bonding process to map with the model. Test substrates as DBC and
copper plate are used to show the different formations of a wedge bond connection
due to hardness and reaction propensity. The experiments were done by using 500
$\mu$m copper wire and a standard V-groove tool.
author:
- first_name: Simon
full_name: Althoff, Simon
last_name: Althoff
- first_name: Jan
full_name: Neuhaus, Jan
last_name: Neuhaus
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Althoff S, Neuhaus J, Hemsel T, Sextro W. Improving the bond quality of copper
wire bonds using a friction model approach. In: Electronic Components and Technology
Conference (ECTC), 2014 IEEE 64th. ; 2014:1549-1555. doi:10.1109/ECTC.2014.6897500'
apa: Althoff, S., Neuhaus, J., Hemsel, T., & Sextro, W. (2014). Improving the
bond quality of copper wire bonds using a friction model approach. In Electronic
Components and Technology Conference (ECTC), 2014 IEEE 64th (pp. 1549–1555).
https://doi.org/10.1109/ECTC.2014.6897500
bibtex: '@inproceedings{Althoff_Neuhaus_Hemsel_Sextro_2014, title={Improving the
bond quality of copper wire bonds using a friction model approach}, DOI={10.1109/ECTC.2014.6897500},
booktitle={Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th},
author={Althoff, Simon and Neuhaus, Jan and Hemsel, Tobias and Sextro, Walter},
year={2014}, pages={1549–1555} }'
chicago: Althoff, Simon, Jan Neuhaus, Tobias Hemsel, and Walter Sextro. “Improving
the Bond Quality of Copper Wire Bonds Using a Friction Model Approach.” In Electronic
Components and Technology Conference (ECTC), 2014 IEEE 64th, 1549–55, 2014.
https://doi.org/10.1109/ECTC.2014.6897500.
ieee: S. Althoff, J. Neuhaus, T. Hemsel, and W. Sextro, “Improving the bond quality
of copper wire bonds using a friction model approach,” in Electronic Components
and Technology Conference (ECTC), 2014 IEEE 64th, 2014, pp. 1549–1555.
mla: Althoff, Simon, et al. “Improving the Bond Quality of Copper Wire Bonds Using
a Friction Model Approach.” Electronic Components and Technology Conference
(ECTC), 2014 IEEE 64th, 2014, pp. 1549–55, doi:10.1109/ECTC.2014.6897500.
short: 'S. Althoff, J. Neuhaus, T. Hemsel, W. Sextro, in: Electronic Components
and Technology Conference (ECTC), 2014 IEEE 64th, 2014, pp. 1549–1555.'
date_created: 2019-05-20T12:11:44Z
date_updated: 2019-09-16T10:57:58Z
department:
- _id: '151'
doi: 10.1109/ECTC.2014.6897500
keyword:
- adhesion
- circuit reliability
- deformation
- diffusion
- fatigue cracks
- friction
- interconnections
- lead bonding
- van der Waals forces
- Cu
- adhering process
- adhesion process
- ampacity improvement
- bond quality improvement
- cleaning process
- diffusing process
- fatigue fracture failure
- friction energy
- friction model
- heat dissipation
- mechanical strength
- piezoelectric triaxial force sensor
- predeforming process
- size 500 mum
- total contact area
- van der Waals forces
- wedge copper wire bonding
- Bonding
- Copper
- Finite element analysis
- Force
- Friction
- Substrates
- Wires
language:
- iso: eng
page: 1549-1555
publication: Electronic Components and Technology Conference (ECTC), 2014 IEEE 64th
quality_controlled: '1'
status: public
title: Improving the bond quality of copper wire bonds using a friction model approach
type: conference
user_id: '55222'
year: '2014'
...