---
_id: '9871'
abstract:
- lang: eng
text: 'Wire bonding is the most common technology for connecting electronic components.
Due to their efficiency bond interconnections made of copper wire are used for
example in the aerospace and medical technology as well as in the fields of renewable
energies. One of the main cost factors in the manufacturing process is the consumables
like bonding tools. The technological transition to copper as wire material causes
significant wear on the millimeter large effective contact area of the bonding
tool. This wear leads to a loss by a factor of 30 of the number of reliable interconnections
which can be produced by a single tool. To reduce setting-up time in the production
and minimizing costs, an enlarged bonding tool lifetime is desirable. Consequently
a better understanding of wear and recognition of wear pattern is required. Therefore,
the paper presents an analyzing method of the tool topography change of a heavy
wire bonding tool by using a confocal microscope. Furthermore, the paper discusses
the identification of the main wear indicators by the help of the named topography
change for different bond parameters, like ultrasonic power and tool geometry.
Reference topography has been carried out by choosing typical parameters of the
production line. To judge whether the quality requirement of the bond connections
made by a single tool cannot be fulfilled shear test of the source bond have been
carried out after a defined number of produced bond connections. Main steps of
analysis: (I)Topography of the tool surface is sampled after a defined number
of bonds by means of a confocal microscope to detect the wear progress.(II)The
recorded data is filtered using Matlab. So, measurement errors can be eliminated
and the topography can be overlaid more easy to identify differences between diverse
tools or differences in wear stages of the same tool.(III)The subsequent discretization
of the topography into sub volumes allows to (IV)describe the loss of volume depending
on the position in the groove. Thereby, intermediate status of wear of one tool
can be used to obtain a persistent description of the topography change over the
number of produced bonds by interpolating the confocal data. Afterwards the persistent
change of the groove flank has been analyzed for the named test series to identify
the main wear indicators and their effect on shear forces. All worn tools show
dominant areas for volume loss especially for plastic deformation and accordingly
abrasion. These wear mechanism can be referred to the change of main parts of
the groove geometry like the rounding of the front and back radius. The most volume
loss was identified in the upper part of the tool flanks or rather at the transition
from the groove flank to the front or back radius. Furthermore the observation
of the center of the groove flank shows just a little change in volume. All in
all, the identification of the wear indicators will be discussed with the objective
of increasing the tool lifetime by optimizing the tool geometry without losses
in bond quality and reliability.'
author:
- first_name: Paul
full_name: Eichwald, Paul
last_name: Eichwald
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Simon
full_name: Althof, Simon
last_name: Althof
- first_name: Florian
full_name: Eacock, Florian
last_name: Eacock
- first_name: Andreas
full_name: Unger, Andreas
last_name: Unger
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Karsten
full_name: Guth, Karsten
last_name: Guth
citation:
ama: 'Eichwald P, Sextro W, Althof S, et al. Analysis Method of Tool Topography
Change and Identification of Wear Indicators for Heavy Copper Wire Wedge Bonding.
In: Proceedings of the 47th International Symposium on Microelectronics.
; 2014:856-861. doi:10.4071/isom-THP34'
apa: Eichwald, P., Sextro, W., Althof, S., Eacock, F., Unger, A., Meyer, T., &
Guth, K. (2014). Analysis Method of Tool Topography Change and Identification
of Wear Indicators for Heavy Copper Wire Wedge Bonding. In Proceedings of the
47th International Symposium on Microelectronics (pp. 856–861). https://doi.org/10.4071/isom-THP34
bibtex: '@inproceedings{Eichwald_Sextro_Althof_Eacock_Unger_Meyer_Guth_2014, title={Analysis
Method of Tool Topography Change and Identification of Wear Indicators for Heavy
Copper Wire Wedge Bonding}, DOI={10.4071/isom-THP34},
booktitle={Proceedings of the 47th International Symposium on Microelectronics},
author={Eichwald, Paul and Sextro, Walter and Althof, Simon and Eacock, Florian
and Unger, Andreas and Meyer, Tobias and Guth, Karsten}, year={2014}, pages={856–861}
}'
chicago: Eichwald, Paul, Walter Sextro, Simon Althof, Florian Eacock, Andreas Unger,
Tobias Meyer, and Karsten Guth. “Analysis Method of Tool Topography Change and
Identification of Wear Indicators for Heavy Copper Wire Wedge Bonding.” In Proceedings
of the 47th International Symposium on Microelectronics, 856–61, 2014. https://doi.org/10.4071/isom-THP34.
ieee: P. Eichwald et al., “Analysis Method of Tool Topography Change and
Identification of Wear Indicators for Heavy Copper Wire Wedge Bonding,” in Proceedings
of the 47th International Symposium on Microelectronics, 2014, pp. 856–861.
mla: Eichwald, Paul, et al. “Analysis Method of Tool Topography Change and Identification
of Wear Indicators for Heavy Copper Wire Wedge Bonding.” Proceedings of the
47th International Symposium on Microelectronics, 2014, pp. 856–61, doi:10.4071/isom-THP34.
short: 'P. Eichwald, W. Sextro, S. Althof, F. Eacock, A. Unger, T. Meyer, K. Guth,
in: Proceedings of the 47th International Symposium on Microelectronics, 2014,
pp. 856–861.'
date_created: 2019-05-20T12:18:55Z
date_updated: 2020-05-07T05:33:45Z
department:
- _id: '151'
doi: 10.4071/isom-THP34
keyword:
- wedge/wedge bonding
- copper wire
- tool wear
language:
- iso: eng
page: 856-861
project:
- _id: '92'
grant_number: 02 PQ2210
name: Intelligente Herstellung zuverlässiger Kupferbondverbindungen
publication: Proceedings of the 47th International Symposium on Microelectronics
status: public
title: Analysis Method of Tool Topography Change and Identification of Wear Indicators
for Heavy Copper Wire Wedge Bonding
type: conference
user_id: '210'
year: '2014'
...
---
_id: '9873'
abstract:
- lang: eng
text: Intelligent technical systems, which combine mechanical, electrical and software
engineering with methods from control engineering and advanced mathematics, go
far beyond the state of the art in mechatronics and open up fascinating perspectives.
Among these systems are so-called self-optimizing systems, which are able to adapt
their behavior autonomously and flexibly to changing operating conditions. The
Collaborative Research Center 614 "Self-optimizing concepts and structures in
mechanical engineering" pursued the long-term aim to enable others to develop
dependable self-optimizing systems. Assuring their dependability poses new challenges.
However, self-optimization also offers the possibility to adapt the system's behavior
to improve dependability during operation. The aim of this book is to provide
methods and techniques to master the challenges and to exploit the possibilities
given by self-optimization. The reader will be able to develop self-optimizing
systems that fulfill and surpass today’s dependability requirements easily. This
book is directed to researchers and practitioners alike. It gives a brief introduction
to the holistic development approach for self-optimizing mechatronic systems and
the steps required to assure a dependable product design starting with the very
early conceptual design phase. A guideline to select suitable methods for each
step and the methods themselves are included. Each method is individually introduced,
many examples and full references are given.
author:
- first_name: Jürgen
full_name: Gausemeier, Jürgen
last_name: Gausemeier
- first_name: Franz
full_name: Josef Rammig, Franz
last_name: Josef Rammig
- first_name: Wilhelm
full_name: Schäfer, Wilhelm
last_name: Schäfer
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: Gausemeier J, Josef Rammig F, Schäfer W, Sextro W. Dependability of Self-Optimizing
Mechatronic Systems. Vol Lecture Notes in Mechanical Engineering. Springer
Berlin Heidelberg; 2014.
apa: Gausemeier, J., Josef Rammig, F., Schäfer, W., & Sextro, W. (2014). Dependability
of Self-Optimizing Mechatronic Systems (Vol. Lecture Notes in Mechanical Engineering).
Springer Berlin Heidelberg.
bibtex: '@book{Gausemeier_Josef Rammig_Schäfer_Sextro_2014, title={Dependability
of Self-Optimizing Mechatronic Systems}, volume={Lecture Notes in Mechanical Engineering},
publisher={Springer Berlin Heidelberg}, author={Gausemeier, Jürgen and Josef Rammig,
Franz and Schäfer, Wilhelm and Sextro, Walter}, year={2014} }'
chicago: Gausemeier, Jürgen, Franz Josef Rammig, Wilhelm Schäfer, and Walter Sextro.
Dependability of Self-Optimizing Mechatronic Systems. Vol. Lecture Notes
in Mechanical Engineering. Springer Berlin Heidelberg, 2014.
ieee: J. Gausemeier, F. Josef Rammig, W. Schäfer, and W. Sextro, Dependability
of Self-Optimizing Mechatronic Systems, vol. Lecture Notes in Mechanical Engineering.
Springer Berlin Heidelberg, 2014.
mla: Gausemeier, Jürgen, et al. Dependability of Self-Optimizing Mechatronic
Systems. Vol. Lecture Notes in Mechanical Engineering, Springer Berlin Heidelberg,
2014.
short: J. Gausemeier, F. Josef Rammig, W. Schäfer, W. Sextro, Dependability of Self-Optimizing
Mechatronic Systems, Springer Berlin Heidelberg, 2014.
date_created: 2019-05-20T12:57:54Z
date_updated: 2019-05-20T13:00:58Z
department:
- _id: '151'
language:
- iso: eng
publisher: Springer Berlin Heidelberg
status: public
title: Dependability of Self-Optimizing Mechatronic Systems
type: book
user_id: '55222'
volume: Lecture Notes in Mechanical Engineering
year: '2014'
...
---
_id: '9874'
author:
- first_name: Tobias
full_name: Hemsel, Tobias
id: '210'
last_name: Hemsel
- first_name: Peter
full_name: Bornmann, Peter
last_name: Bornmann
- first_name: Takeshi
full_name: Morita, Takeshi
last_name: Morita
- first_name: Christoph
full_name: Sondermann-Wölke, Christoph
last_name: Sondermann-Wölke
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: Hemsel T, Bornmann P, Morita T, Sondermann-Wölke C, Sextro W. Reliability analysis
of ultrasonic power transducers. Archive of Applied Mechanics. 2014:1-7.
doi:10.1007/s00419-014-0965-4
apa: Hemsel, T., Bornmann, P., Morita, T., Sondermann-Wölke, C., & Sextro, W.
(2014). Reliability analysis of ultrasonic power transducers. Archive of Applied
Mechanics, 1–7. https://doi.org/10.1007/s00419-014-0965-4
bibtex: '@article{Hemsel_Bornmann_Morita_Sondermann-Wölke_Sextro_2014, title={Reliability
analysis of ultrasonic power transducers}, DOI={10.1007/s00419-014-0965-4},
journal={Archive of Applied Mechanics}, publisher={Springer Berlin Heidelberg},
author={Hemsel, Tobias and Bornmann, Peter and Morita, Takeshi and Sondermann-Wölke,
Christoph and Sextro, Walter}, year={2014}, pages={1–7} }'
chicago: Hemsel, Tobias, Peter Bornmann, Takeshi Morita, Christoph Sondermann-Wölke,
and Walter Sextro. “Reliability Analysis of Ultrasonic Power Transducers.” Archive
of Applied Mechanics, 2014, 1–7. https://doi.org/10.1007/s00419-014-0965-4.
ieee: T. Hemsel, P. Bornmann, T. Morita, C. Sondermann-Wölke, and W. Sextro, “Reliability
analysis of ultrasonic power transducers,” Archive of Applied Mechanics,
pp. 1–7, 2014.
mla: Hemsel, Tobias, et al. “Reliability Analysis of Ultrasonic Power Transducers.”
Archive of Applied Mechanics, Springer Berlin Heidelberg, 2014, pp. 1–7,
doi:10.1007/s00419-014-0965-4.
short: T. Hemsel, P. Bornmann, T. Morita, C. Sondermann-Wölke, W. Sextro, Archive
of Applied Mechanics (2014) 1–7.
date_created: 2019-05-20T13:01:25Z
date_updated: 2019-09-16T10:57:23Z
department:
- _id: '151'
doi: 10.1007/s00419-014-0965-4
keyword:
- Reliability
- Ultrasonic power transducers
- FMEA
language:
- iso: eng
page: 1-7
publication: Archive of Applied Mechanics
publication_identifier:
issn:
- 0939-1533
publisher: Springer Berlin Heidelberg
quality_controlled: '1'
status: public
title: Reliability analysis of ultrasonic power transducers
type: journal_article
user_id: '55222'
year: '2014'
...
---
_id: '9876'
abstract:
- lang: eng
text: Piezoelectric inertia motors use the inertia of a body to drive it by means
of a friction contact in a series of small steps. It has been shown previously
in theoretical investigations that higher velocities and smoother movements can
be obtained if these steps do not contain phases of stiction (''stick-slip`` operation),
but use sliding friction only (''slip-slip`` operation). One very promising driving
option for such motors is the superposition of multiple sinusoidal signals or
harmonics. In this contribution, the theoretical results are validated experimentally.
In this context, a quick and reliable identification process for parameters describing
the friction contact is proposed. Additionally, the force generation potential
of inertia motors is investigated theoretically and experimentally. The experimental
results confirm the theoretical result that for a given maximum frequency, a signal
with a high fundamental frequency and consisting of two superposed sine waves
leads to the highest velocity and the smoothest motion, while the maximum motor
force is obtained with signals containing more harmonics. These results are of
fundamental importance for the further development of high-velocity piezoelectric
inertia motors.
author:
- first_name: Matthias
full_name: Hunstig, Matthias
last_name: Hunstig
- 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: 'Hunstig M, Hemsel T, Sextro W. High-velocity operation of piezoelectric inertia
motors: experimental validation. Archive of Applied Mechanics. 2014:1-9.
doi:10.1007/s00419-014-0940-0'
apa: 'Hunstig, M., Hemsel, T., & Sextro, W. (2014). High-velocity operation
of piezoelectric inertia motors: experimental validation. Archive of Applied
Mechanics, 1–9. https://doi.org/10.1007/s00419-014-0940-0'
bibtex: '@article{Hunstig_Hemsel_Sextro_2014, title={High-velocity operation of
piezoelectric inertia motors: experimental validation}, DOI={10.1007/s00419-014-0940-0},
journal={Archive of Applied Mechanics}, publisher={Springer Berlin Heidelberg},
author={Hunstig, Matthias and Hemsel, Tobias and Sextro, Walter}, year={2014},
pages={1–9} }'
chicago: 'Hunstig, Matthias, Tobias Hemsel, and Walter Sextro. “High-Velocity Operation
of Piezoelectric Inertia Motors: Experimental Validation.” Archive of Applied
Mechanics, 2014, 1–9. https://doi.org/10.1007/s00419-014-0940-0.'
ieee: 'M. Hunstig, T. Hemsel, and W. Sextro, “High-velocity operation of piezoelectric
inertia motors: experimental validation,” Archive of Applied Mechanics,
pp. 1–9, 2014.'
mla: 'Hunstig, Matthias, et al. “High-Velocity Operation of Piezoelectric Inertia
Motors: Experimental Validation.” Archive of Applied Mechanics, Springer
Berlin Heidelberg, 2014, pp. 1–9, doi:10.1007/s00419-014-0940-0.'
short: M. Hunstig, T. Hemsel, W. Sextro, Archive of Applied Mechanics (2014) 1–9.
date_created: 2019-05-20T13:08:08Z
date_updated: 2019-05-20T13:08:43Z
department:
- _id: '151'
doi: 10.1007/s00419-014-0940-0
keyword:
- Inertia motor
- High velocity
- Stick-slip motor
- Slip-slip operation
- Friction parameter identification
language:
- iso: eng
page: 1-9
publication: Archive of Applied Mechanics
publication_identifier:
issn:
- 0939-1533
publisher: Springer Berlin Heidelberg
status: public
title: 'High-velocity operation of piezoelectric inertia motors: experimental validation'
type: journal_article
user_id: '55222'
year: '2014'
...
---
_id: '9879'
abstract:
- lang: eng
text: Application of prognostics and health management (PHM) in the field of Proton
Exchange Membrane (PEM) fuel cells is emerging as an important tool in increasing
the reliability and availability of these systems. Though a lot of work is currently
being conducted to develop PHM systems for fuel cells, various challenges have
been encountered including the self-healing effect after characterization as well
as accelerated degradation due to dynamic loading, all which make RUL predictions
a difficult task. In this study, a prognostic approach based on adaptive particle
filter algorithm is proposed. The novelty of the proposed method lies in the introduction
of a self-healing factor after each characterization and the adaption of the degradation
model parameters to fit to the changing degradation trend. An ensemble of five
different state models based on weighted mean is then developed. The results show
that the method is effective in estimating the remaining useful life of PEM fuel
cells, with majority of the predictions falling within 5\% error. The method was
employed in the IEEE 2014 PHM Data Challenge and led to our team emerging the
winner of the RUL category of the challenge.
author:
- first_name: 'James Kuria '
full_name: 'Kimotho, James Kuria '
last_name: Kimotho
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Kimotho JK, Meyer T, Sextro W. PEM fuel cell prognostics using particle filter
with model parameter adaptation. In: Prognostics and Health Management (PHM),
2014 IEEE Conference On. ; 2014:1-6. doi:10.1109/ICPHM.2014.7036406'
apa: Kimotho, J. K., Meyer, T., & Sextro, W. (2014). PEM fuel cell prognostics
using particle filter with model parameter adaptation. In Prognostics and Health
Management (PHM), 2014 IEEE Conference on (pp. 1–6). https://doi.org/10.1109/ICPHM.2014.7036406
bibtex: '@inproceedings{Kimotho_Meyer_Sextro_2014, title={PEM fuel cell prognostics
using particle filter with model parameter adaptation}, DOI={10.1109/ICPHM.2014.7036406},
booktitle={Prognostics and Health Management (PHM), 2014 IEEE Conference on},
author={Kimotho, James Kuria and Meyer, Tobias and Sextro, Walter}, year={2014},
pages={1–6} }'
chicago: Kimotho, James Kuria , Tobias Meyer, and Walter Sextro. “PEM Fuel Cell
Prognostics Using Particle Filter with Model Parameter Adaptation.” In Prognostics
and Health Management (PHM), 2014 IEEE Conference On, 1–6, 2014. https://doi.org/10.1109/ICPHM.2014.7036406.
ieee: J. K. Kimotho, T. Meyer, and W. Sextro, “PEM fuel cell prognostics using particle
filter with model parameter adaptation,” in Prognostics and Health Management
(PHM), 2014 IEEE Conference on, 2014, pp. 1–6.
mla: Kimotho, James Kuria, et al. “PEM Fuel Cell Prognostics Using Particle Filter
with Model Parameter Adaptation.” Prognostics and Health Management (PHM),
2014 IEEE Conference On, 2014, pp. 1–6, doi:10.1109/ICPHM.2014.7036406.
short: 'J.K. Kimotho, T. Meyer, W. Sextro, in: Prognostics and Health Management
(PHM), 2014 IEEE Conference On, 2014, pp. 1–6.'
date_created: 2019-05-20T13:11:02Z
date_updated: 2019-05-20T13:12:27Z
department:
- _id: '151'
doi: 10.1109/ICPHM.2014.7036406
keyword:
- ageing
- particle filtering (numerical methods)
- proton exchange membrane fuel cells
- remaining life assessment
- PEM fuel cell prognostics
- PHM
- RUL predictions
- accelerated degradation
- adaptive particle filter algorithm
- dynamic loading
- model parameter adaptation
- prognostics and health management
- proton exchange membrane fuel cells
- remaining useful life estimation
- self-healing effect
- Adaptation models
- Data models
- Degradation
- Estimation
- Fuel cells
- Mathematical model
- Prognostics and health management
language:
- iso: eng
page: 1-6
publication: Prognostics and Health Management (PHM), 2014 IEEE Conference on
status: public
title: PEM fuel cell prognostics using particle filter with model parameter adaptation
type: conference
user_id: '55222'
year: '2014'
...
---
_id: '9880'
abstract:
- lang: eng
text: With the paradigm shift towards prognostic and health management (PHM) of
machinery, there is need for reliable PHM methodologies with narrow error bounds
to allow maintenance engineers take decisive maintenance actions based on the
prognostic results. Prognostics is mainly concerned with the estimation of the
remaining useful life (RUL) or time to failure (TTF). The accuracy of PHM methods
is usually a function of the features extracted from the raw data obtained from
sensors. In cases where the extracted features do not display clear degradation
trends, for instance highly loaded bearings, the accuracy of the state of the
art PHM methods is significantly affected. The data which lacks clear degradation
trend is referred to as non-trending data. This study presents a method for extracting
degradation trends from non-trending condition monitoring data for RUL estimation.
The raw signals are first filtered using a discrete wavelet transform (DWT) denoising
filter to remove noise from the acquired signals. Time domain, frequency domain
and time-frequency domain features are then extracted from the filtered signals.
An autoregressive model is then applied to the extracted features to identify
the degradation trends. Features representing the maximum health information are
then selected based on a performance evaluation criteria using extreme learning
machine (ELM) algorithm. The selected features can then be used as inputs in a
prognostic algorithm. The feasibility of the method is demonstrated using experimental
bearing vibration data. The performance of the method is evaluated on the accuracy
of RUL estimation and the results show that the method can be used to accurately
estimate RUL with a maximum error of 10\%.
author:
- first_name: James Kuria
full_name: Kimotho, James Kuria
last_name: Kimotho
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Kimotho JK, Sextro W. An approach for feature extraction and selection from
non-trending data for machinery prognosis. In: Proceedings of the Second European
Conference of the Prognostics and Health Management Society 2014. Vol 5. ;
2014.'
apa: Kimotho, J. K., & Sextro, W. (2014). An approach for feature extraction
and selection from non-trending data for machinery prognosis. In Proceedings
of the Second European Conference of the Prognostics and Health Management Society
2014 (Vol. 5).
bibtex: '@inproceedings{Kimotho_Sextro_2014, title={An approach for feature extraction
and selection from non-trending data for machinery prognosis}, volume={5}, booktitle={Proceedings
of the Second European Conference of the Prognostics and Health Management Society
2014}, author={Kimotho, James Kuria and Sextro, Walter}, year={2014} }'
chicago: Kimotho, James Kuria, and Walter Sextro. “An Approach for Feature Extraction
and Selection from Non-Trending Data for Machinery Prognosis.” In Proceedings
of the Second European Conference of the Prognostics and Health Management Society
2014, Vol. 5, 2014.
ieee: J. K. Kimotho and W. Sextro, “An approach for feature extraction and selection
from non-trending data for machinery prognosis,” in Proceedings of the Second
European Conference of the Prognostics and Health Management Society 2014,
2014, vol. 5.
mla: Kimotho, James Kuria, and Walter Sextro. “An Approach for Feature Extraction
and Selection from Non-Trending Data for Machinery Prognosis.” Proceedings
of the Second European Conference of the Prognostics and Health Management Society
2014, vol. 5, 2014.
short: 'J.K. Kimotho, W. Sextro, in: Proceedings of the Second European Conference
of the Prognostics and Health Management Society 2014, 2014.'
date_created: 2019-05-20T13:13:00Z
date_updated: 2019-09-16T10:37:35Z
department:
- _id: '151'
intvolume: ' 5'
keyword:
- autoregressive model ELM feature extraction feature selection non-trending Remaining
useful Life
language:
- iso: eng
publication: Proceedings of the Second European Conference of the Prognostics and
Health Management Society 2014
quality_controlled: '1'
status: public
title: An approach for feature extraction and selection from non-trending data for
machinery prognosis
type: conference
user_id: '55222'
volume: 5
year: '2014'
...
---
_id: '9881'
abstract:
- lang: eng
text: The increasing demand for high reliability, safety and availability of technical
systems calls for innovative maintenance strategies. The use of prognostic health
management (PHM) approach where maintenance action is taken based on current and
future health state of a component or system is rapidly gaining popularity in
the maintenance industry. Multiclass support vector machines (MC-SVM) has been
identified as a promising algorithm in PHM applications due to its high classification
accuracy. However, it requires parameter tuning for each application, with the
objective of minimizing the classification error. This is a single objective optimization
problem which requires the use of optimization algorithms that are capable of
exhaustively searching for the global optimum parameters. This work proposes the
use of hybrid differential evolution (DE) and particle swarm optimization (PSO)
in optimally tuning the MC-SVM parameters. DE identifies the search limit of the
parameters while PSO finds the global optimum within the search limit. The feasibility
of the approach is verified using bearing run-to-failure data and the results
show that the proposed method significantly increases health state classification
accuracy.
author:
- first_name: James Kuria
full_name: Kimotho, James Kuria
last_name: Kimotho
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: Kimotho JK, Sextro W. Optimal Parameter Tuning for Multiclass Support Vector
Machines in Machinery Health State Estimation. PAMM. 2014;14(1):815-816.
doi:10.1002/pamm.201410388
apa: Kimotho, J. K., & Sextro, W. (2014). Optimal Parameter Tuning for Multiclass
Support Vector Machines in Machinery Health State Estimation. PAMM, 14(1),
815–816. https://doi.org/10.1002/pamm.201410388
bibtex: '@article{Kimotho_Sextro_2014, title={Optimal Parameter Tuning for Multiclass
Support Vector Machines in Machinery Health State Estimation}, volume={14}, DOI={10.1002/pamm.201410388}, number={1},
journal={PAMM}, publisher={WILEY-VCH Verlag}, author={Kimotho, James Kuria and
Sextro, Walter}, year={2014}, pages={815–816} }'
chicago: 'Kimotho, James Kuria, and Walter Sextro. “Optimal Parameter Tuning for
Multiclass Support Vector Machines in Machinery Health State Estimation.” PAMM
14, no. 1 (2014): 815–16. https://doi.org/10.1002/pamm.201410388.'
ieee: J. K. Kimotho and W. Sextro, “Optimal Parameter Tuning for Multiclass Support
Vector Machines in Machinery Health State Estimation,” PAMM, vol. 14, no.
1, pp. 815–816, 2014.
mla: Kimotho, James Kuria, and Walter Sextro. “Optimal Parameter Tuning for Multiclass
Support Vector Machines in Machinery Health State Estimation.” PAMM, vol.
14, no. 1, WILEY-VCH Verlag, 2014, pp. 815–16, doi:10.1002/pamm.201410388.
short: J.K. Kimotho, W. Sextro, PAMM 14 (2014) 815–816.
date_created: 2019-05-20T13:14:17Z
date_updated: 2019-05-20T13:15:00Z
department:
- _id: '151'
doi: 10.1002/pamm.201410388
intvolume: ' 14'
issue: '1'
language:
- iso: eng
page: 815-816
publication: PAMM
publication_identifier:
issn:
- 1617-7061
publisher: WILEY-VCH Verlag
status: public
title: Optimal Parameter Tuning for Multiclass Support Vector Machines in Machinery
Health State Estimation
type: journal_article
user_id: '55222'
volume: 14
year: '2014'
...
---
_id: '9882'
abstract:
- lang: eng
text: An automotive suspension system represents one of the most complex and important
systems in a passenger vehicle, which has to ensure a robust and optimized contact
between the wheels and the road at any time. For improving a suspension system
it is important to take an investigative look at the interaction between suspension,
tire and road dynamics. Thus a part of a study into aspects of suspension modeling
on multi-body simulations of rear multi-link suspension system dynamics with focus
on the tire footprint area is presented in this work.
author:
- first_name: Sergej
full_name: Kohl, Sergej
last_name: Kohl
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Armin
full_name: Zuber, Armin
last_name: Zuber
citation:
ama: Kohl S, Sextro W, Zuber A. Tire footprint analysis depending on the elastokinematics
of a multi-link suspension system using multi-body dynamics simulation. PAMM.
2014;14(1):65-66. doi:10.1002/pamm.201410020
apa: Kohl, S., Sextro, W., & Zuber, A. (2014). Tire footprint analysis depending
on the elastokinematics of a multi-link suspension system using multi-body dynamics
simulation. PAMM, 14(1), 65–66. https://doi.org/10.1002/pamm.201410020
bibtex: '@article{Kohl_Sextro_Zuber_2014, title={Tire footprint analysis depending
on the elastokinematics of a multi-link suspension system using multi-body dynamics
simulation}, volume={14}, DOI={10.1002/pamm.201410020},
number={1}, journal={PAMM}, publisher={WILEY-VCH Verlag}, author={Kohl, Sergej
and Sextro, Walter and Zuber, Armin}, year={2014}, pages={65–66} }'
chicago: 'Kohl, Sergej, Walter Sextro, and Armin Zuber. “Tire Footprint Analysis
Depending on the Elastokinematics of a Multi-Link Suspension System Using Multi-Body
Dynamics Simulation.” PAMM 14, no. 1 (2014): 65–66. https://doi.org/10.1002/pamm.201410020.'
ieee: S. Kohl, W. Sextro, and A. Zuber, “Tire footprint analysis depending on the
elastokinematics of a multi-link suspension system using multi-body dynamics simulation,”
PAMM, vol. 14, no. 1, pp. 65–66, 2014.
mla: Kohl, Sergej, et al. “Tire Footprint Analysis Depending on the Elastokinematics
of a Multi-Link Suspension System Using Multi-Body Dynamics Simulation.” PAMM,
vol. 14, no. 1, WILEY-VCH Verlag, 2014, pp. 65–66, doi:10.1002/pamm.201410020.
short: S. Kohl, W. Sextro, A. Zuber, PAMM 14 (2014) 65–66.
date_created: 2019-05-20T13:15:27Z
date_updated: 2019-05-20T13:16:20Z
department:
- _id: '151'
doi: 10.1002/pamm.201410020
intvolume: ' 14'
issue: '1'
language:
- iso: eng
page: 65-66
publication: PAMM
publication_identifier:
issn:
- 1617-7061
publisher: WILEY-VCH Verlag
status: public
title: Tire footprint analysis depending on the elastokinematics of a multi-link suspension
system using multi-body dynamics simulation
type: journal_article
user_id: '55222'
volume: 14
year: '2014'
...
---
_id: '9883'
author:
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Claudia
full_name: Priesterjahn, Claudia
last_name: Priesterjahn
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Meyer T, Priesterjahn C, Sextro W. Conclusion and Outlook. In: Gausemeier
J, Josef Rammig F, Schäfer W, Sextro W, eds. Dependability of Self-Optimizing
Mechatronic Systems. Lecture Notes in Mechanical Engineering. Springer Berlin
Heidelberg; 2014:189-190. doi:10.1007/978-3-642-53742-4_5'
apa: Meyer, T., Priesterjahn, C., & Sextro, W. (2014). Conclusion and Outlook.
In J. Gausemeier, F. Josef Rammig, W. Schäfer, & W. Sextro (Eds.), Dependability
of Self-Optimizing Mechatronic Systems (pp. 189–190). Springer Berlin Heidelberg.
https://doi.org/10.1007/978-3-642-53742-4_5
bibtex: '@inbook{Meyer_Priesterjahn_Sextro_2014, series={Lecture Notes in Mechanical
Engineering}, title={Conclusion and Outlook}, DOI={10.1007/978-3-642-53742-4_5},
booktitle={Dependability of Self-Optimizing Mechatronic Systems}, publisher={Springer
Berlin Heidelberg}, author={Meyer, Tobias and Priesterjahn, Claudia and Sextro,
Walter}, editor={Gausemeier, Jürgen and Josef Rammig, Franz and Schäfer, Wilhelm
and Sextro, WalterEditors}, year={2014}, pages={189–190}, collection={Lecture
Notes in Mechanical Engineering} }'
chicago: Meyer, Tobias, Claudia Priesterjahn, and Walter Sextro. “Conclusion and
Outlook.” In Dependability of Self-Optimizing Mechatronic Systems, edited
by Jürgen Gausemeier, Franz Josef Rammig, Wilhelm Schäfer, and Walter Sextro,
189–90. Lecture Notes in Mechanical Engineering. Springer Berlin Heidelberg, 2014.
https://doi.org/10.1007/978-3-642-53742-4_5.
ieee: T. Meyer, C. Priesterjahn, and W. Sextro, “Conclusion and Outlook,” in Dependability
of Self-Optimizing Mechatronic Systems, J. Gausemeier, F. Josef Rammig, W.
Schäfer, and W. Sextro, Eds. Springer Berlin Heidelberg, 2014, pp. 189–190.
mla: Meyer, Tobias, et al. “Conclusion and Outlook.” Dependability of Self-Optimizing
Mechatronic Systems, edited by Jürgen Gausemeier et al., Springer Berlin Heidelberg,
2014, pp. 189–90, doi:10.1007/978-3-642-53742-4_5.
short: 'T. Meyer, C. Priesterjahn, W. Sextro, in: J. Gausemeier, F. Josef Rammig,
W. Schäfer, W. Sextro (Eds.), Dependability of Self-Optimizing Mechatronic Systems,
Springer Berlin Heidelberg, 2014, pp. 189–190.'
date_created: 2019-05-20T13:16:42Z
date_updated: 2019-05-20T13:17:43Z
department:
- _id: '151'
doi: 10.1007/978-3-642-53742-4_5
editor:
- first_name: Jürgen
full_name: Gausemeier, Jürgen
last_name: Gausemeier
- first_name: Franz
full_name: Josef Rammig, Franz
last_name: Josef Rammig
- first_name: Wilhelm
full_name: Schäfer, Wilhelm
last_name: Schäfer
- first_name: Walter
full_name: Sextro, Walter
last_name: Sextro
language:
- iso: eng
page: 189-190
publication: Dependability of Self-Optimizing Mechatronic Systems
publication_identifier:
isbn:
- 978-3-642-53741-7
publisher: Springer Berlin Heidelberg
series_title: Lecture Notes in Mechanical Engineering
status: public
title: Conclusion and Outlook
type: book_chapter
user_id: '55222'
year: '2014'
...
---
_id: '9885'
abstract:
- lang: eng
text: Intelligent mechatronic systems, such as self-optimizing systems, allow an
adaptation of the system behavior at runtime based on the current situation. To
do so, they generally select among several pre-defined working points. A common
method to determine working points for a mechatronic system is to use model-based
multiobjective optimization. It allows finding compromises among conflicting objectives,
called objective functions, by adapting parameters. To evaluate the system behavior
for different parameter sets, a model of the system behavior is included in the
objective functions and is evaluated during each function call. Intelligent mechatronic
systems also have the ability to adapt their behavior based on their current reliability,
thus increasing their availability, or on changed safety requirements; all of
which are summed up by the common term dependability. To allow this adaptation,
dependability can be considered in multiobjective optimization by including dependability-related
objective functions. However, whereas performance-related objective functions
are easily found, formulation of dependability-related objective functions is
highly system-specific and not intuitive, making it complex and error-prone. Since
each mechatronic system is different, individual failure modes have to be taken
into account, which need to be found using common methods such as Failure-Modes
and Effects Analysis or Fault Tree Analysis. Using component degradation models,
which again are specific to the system at hand, the main loading factors can be
determined. By including these in the model of the system behavior, the relation
between working point and dependability can be formulated as an objective function.
In our work, this approach is presented in more detail. It is exemplified using
an actively actuated single plate dry clutch system. Results show that this approach
is suitable for formulating dependability-related objective functions and that
these can be used to extend system lifetime by adapting system behavior.
author:
- first_name: Tobias
full_name: Meyer , Tobias
last_name: 'Meyer '
- first_name: Christoph
full_name: Sondermann-Wölke, Christoph
last_name: Sondermann-Wölke
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: Meyer T, Sondermann-Wölke C, Sextro W. Method to Identify Dependability Objectives
in Multiobjective Optimization Problem. Conference Proceedings of the 2nd International
Conference on System-Integrated Intelligence. 2014;15:46-53. doi:10.1016/j.protcy.2014.09.033
apa: Meyer , T., Sondermann-Wölke, C., & Sextro, W. (2014). Method to Identify
Dependability Objectives in Multiobjective Optimization Problem. Conference
Proceedings of the 2nd International Conference on System-Integrated Intelligence,
15, 46–53. https://doi.org/10.1016/j.protcy.2014.09.033
bibtex: '@article{Meyer _Sondermann-Wölke_Sextro_2014, title={Method to Identify
Dependability Objectives in Multiobjective Optimization Problem}, volume={15},
DOI={10.1016/j.protcy.2014.09.033},
journal={Conference Proceedings of the 2nd International Conference on System-Integrated
Intelligence}, author={Meyer , Tobias and Sondermann-Wölke, Christoph and Sextro,
Walter}, year={2014}, pages={46–53} }'
chicago: 'Meyer , Tobias, Christoph Sondermann-Wölke, and Walter Sextro. “Method
to Identify Dependability Objectives in Multiobjective Optimization Problem.”
Conference Proceedings of the 2nd International Conference on System-Integrated
Intelligence 15 (2014): 46–53. https://doi.org/10.1016/j.protcy.2014.09.033.'
ieee: T. Meyer , C. Sondermann-Wölke, and W. Sextro, “Method to Identify Dependability
Objectives in Multiobjective Optimization Problem,” Conference Proceedings
of the 2nd International Conference on System-Integrated Intelligence, vol.
15, pp. 46–53, 2014.
mla: Meyer , Tobias, et al. “Method to Identify Dependability Objectives in Multiobjective
Optimization Problem.” Conference Proceedings of the 2nd International Conference
on System-Integrated Intelligence, vol. 15, 2014, pp. 46–53, doi:10.1016/j.protcy.2014.09.033.
short: T. Meyer , C. Sondermann-Wölke, W. Sextro, Conference Proceedings of the
2nd International Conference on System-Integrated Intelligence 15 (2014) 46–53.
date_created: 2019-05-20T13:19:37Z
date_updated: 2019-09-16T10:22:04Z
department:
- _id: '151'
doi: 10.1016/j.protcy.2014.09.033
intvolume: ' 15'
keyword:
- Self-optimization
- multiobjective optimization
- objective function
- dependability
- intelligent system
- behavior adaptation
language:
- iso: eng
page: 46-53
publication: Conference Proceedings of the 2nd International Conference on System-Integrated
Intelligence
quality_controlled: '1'
status: public
title: Method to Identify Dependability Objectives in Multiobjective Optimization
Problem
type: journal_article
user_id: '55222'
volume: 15
year: '2014'
...
---
_id: '9887'
abstract:
- lang: eng
text: A model to calculate the locally resolved tangential contact forces of the
wheel rail contact with respect to contact kinematics, material and surface properties
as well as temperature is introduced. The elasticity of wheel and rail is modeled
as an elastic layer consisting of point contact elements connected by springs
to each other and to the wheel. Each element has two degrees of freedom in tangential
directions. The resulting total stiffness matrix is reduced to calculate only
the position of the elements in contact. Friction forces as well as contact stiffnesses
are incorporated by a nonlinear force-displacement characteristic, which originates
from a detailed contact model. The contact elements are transported through the
contact zone in discrete time steps. After each time step an equilibrium is calculated.
For all elements, their temperature and its influence on local friction are regarded
by calculating friction power and temperature each time step.
author:
- first_name: Jan
full_name: Neuhaus, Jan
last_name: Neuhaus
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Neuhaus J, Sextro W. Thermo-Mechanical Model for Wheel Rail Contact using
Coupled Point Contact Elements. In: Liu GR, Guan ZW, eds. Proceedings of the
5th International Conference on Computational Methods. ScienTech Publisher;
2014.'
apa: Neuhaus, J., & Sextro, W. (2014). Thermo-Mechanical Model for Wheel Rail
Contact using Coupled Point Contact Elements. In G. R. Liu & Z. W. Guan (Eds.),
Proceedings of the 5th International Conference on Computational Methods.
ScienTech Publisher.
bibtex: '@inproceedings{Neuhaus_Sextro_2014, title={Thermo-Mechanical Model for
Wheel Rail Contact using Coupled Point Contact Elements}, booktitle={Proceedings
of the 5th International Conference on Computational Methods}, publisher={ScienTech
Publisher}, author={Neuhaus, Jan and Sextro, Walter}, editor={Liu, G.R. and Guan,
Z.W.Editors}, year={2014} }'
chicago: Neuhaus, Jan, and Walter Sextro. “Thermo-Mechanical Model for Wheel Rail
Contact Using Coupled Point Contact Elements.” In Proceedings of the 5th International
Conference on Computational Methods, edited by G.R. Liu and Z.W. Guan. ScienTech
Publisher, 2014.
ieee: J. Neuhaus and W. Sextro, “Thermo-Mechanical Model for Wheel Rail Contact
using Coupled Point Contact Elements,” in Proceedings of the 5th International
Conference on Computational Methods, 2014.
mla: Neuhaus, Jan, and Walter Sextro. “Thermo-Mechanical Model for Wheel Rail Contact
Using Coupled Point Contact Elements.” Proceedings of the 5th International
Conference on Computational Methods, edited by G.R. Liu and Z.W. Guan, ScienTech
Publisher, 2014.
short: 'J. Neuhaus, W. Sextro, in: G.R. Liu, Z.W. Guan (Eds.), Proceedings of the
5th International Conference on Computational Methods, ScienTech Publisher, 2014.'
date_created: 2019-05-20T13:23:02Z
date_updated: 2019-09-16T10:59:46Z
department:
- _id: '151'
editor:
- first_name: G.R.
full_name: Liu, G.R.
last_name: Liu
- first_name: Z.W.
full_name: Guan, Z.W.
last_name: Guan
keyword:
- Rolling Contact
- Discrete Elements
- Contact Stiffness
- Temperature
language:
- iso: eng
publication: Proceedings of the 5th International Conference on Computational Methods
publisher: ScienTech Publisher
quality_controlled: '1'
status: public
title: Thermo-Mechanical Model for Wheel Rail Contact using Coupled Point Contact
Elements
type: conference
user_id: '55222'
year: '2014'
...
---
_id: '9888'
abstract:
- lang: eng
text: This paper discusses the refinement of multibody models by integration of
flexible bodies and by considering nonlinearities from contacts. It presents common
approaches for contact modeling in multibody simulations and strategies to include
flexible bodies. A contact model is implemented in the elastic multibody model.
Experimental results show that significant effects of system dynamics can be modeled
by use of a multibody model including elastic bodies and contacts.
author:
- first_name: Sebastian
full_name: Schulze, Sebastian
last_name: Schulze
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Frank
full_name: Grüter, Frank
last_name: Grüter
citation:
ama: Schulze S, Sextro W, Grüter F. Contact Modeling in Multibody Systems with Elastic
Bodies in High-Frequency Applications. PAMM. 2014;14(1):39-40. doi:10.1002/pamm.201410012
apa: Schulze, S., Sextro, W., & Grüter, F. (2014). Contact Modeling in Multibody
Systems with Elastic Bodies in High-Frequency Applications. PAMM, 14(1),
39–40. https://doi.org/10.1002/pamm.201410012
bibtex: '@article{Schulze_Sextro_Grüter_2014, title={Contact Modeling in Multibody
Systems with Elastic Bodies in High-Frequency Applications}, volume={14}, DOI={10.1002/pamm.201410012}, number={1},
journal={PAMM}, publisher={WILEY-VCH Verlag}, author={Schulze, Sebastian and Sextro,
Walter and Grüter, Frank}, year={2014}, pages={39–40} }'
chicago: 'Schulze, Sebastian, Walter Sextro, and Frank Grüter. “Contact Modeling
in Multibody Systems with Elastic Bodies in High-Frequency Applications.” PAMM
14, no. 1 (2014): 39–40. https://doi.org/10.1002/pamm.201410012.'
ieee: S. Schulze, W. Sextro, and F. Grüter, “Contact Modeling in Multibody Systems
with Elastic Bodies in High-Frequency Applications,” PAMM, vol. 14, no.
1, pp. 39–40, 2014.
mla: Schulze, Sebastian, et al. “Contact Modeling in Multibody Systems with Elastic
Bodies in High-Frequency Applications.” PAMM, vol. 14, no. 1, WILEY-VCH
Verlag, 2014, pp. 39–40, doi:10.1002/pamm.201410012.
short: S. Schulze, W. Sextro, F. Grüter, PAMM 14 (2014) 39–40.
date_created: 2019-05-20T13:24:00Z
date_updated: 2019-05-20T13:24:59Z
department:
- _id: '151'
doi: 10.1002/pamm.201410012
intvolume: ' 14'
issue: '1'
language:
- iso: eng
page: 39-40
publication: PAMM
publication_identifier:
issn:
- 1617-7061
publisher: WILEY-VCH Verlag
status: public
title: Contact Modeling in Multibody Systems with Elastic Bodies in High-Frequency
Applications
type: journal_article
user_id: '55222'
volume: 14
year: '2014'
...
---
_id: '9889'
abstract:
- lang: eng
text: A measurement method is presented that combines the advantages of the multisine
measurement technique with a prediction method for peak bending behavior. This
combination allows the analysis of the dynamic behavior of mechanical structures
at distinctly reduced measurement durations and has the advantage of reducing
high excitation impacts on the structure under test.
author:
- first_name: Christian
full_name: Sprock, Christian
last_name: Sprock
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Sprock C, Sextro W. Time-efficient dynamic analysis of structures exhibiting
nonlinear peak bending. In: Instrumentation and Measurement Technology Conference
(I2MTC) Proceedings, 2014 IEEE International. ; 2014:320-324. doi:10.1109/I2MTC.2014.6860760'
apa: Sprock, C., & Sextro, W. (2014). Time-efficient dynamic analysis of structures
exhibiting nonlinear peak bending. In Instrumentation and Measurement Technology
Conference (I2MTC) Proceedings, 2014 IEEE International (pp. 320–324). https://doi.org/10.1109/I2MTC.2014.6860760
bibtex: '@inproceedings{Sprock_Sextro_2014, title={Time-efficient dynamic analysis
of structures exhibiting nonlinear peak bending}, DOI={10.1109/I2MTC.2014.6860760},
booktitle={Instrumentation and Measurement Technology Conference (I2MTC) Proceedings,
2014 IEEE International}, author={Sprock, Christian and Sextro, Walter}, year={2014},
pages={320–324} }'
chicago: Sprock, Christian, and Walter Sextro. “Time-Efficient Dynamic Analysis
of Structures Exhibiting Nonlinear Peak Bending.” In Instrumentation and Measurement
Technology Conference (I2MTC) Proceedings, 2014 IEEE International, 320–24,
2014. https://doi.org/10.1109/I2MTC.2014.6860760.
ieee: C. Sprock and W. Sextro, “Time-efficient dynamic analysis of structures exhibiting
nonlinear peak bending,” in Instrumentation and Measurement Technology Conference
(I2MTC) Proceedings, 2014 IEEE International, 2014, pp. 320–324.
mla: Sprock, Christian, and Walter Sextro. “Time-Efficient Dynamic Analysis of Structures
Exhibiting Nonlinear Peak Bending.” Instrumentation and Measurement Technology
Conference (I2MTC) Proceedings, 2014 IEEE International, 2014, pp. 320–24,
doi:10.1109/I2MTC.2014.6860760.
short: 'C. Sprock, W. Sextro, in: Instrumentation and Measurement Technology Conference
(I2MTC) Proceedings, 2014 IEEE International, 2014, pp. 320–324.'
date_created: 2019-05-20T13:25:22Z
date_updated: 2019-05-20T13:25:53Z
department:
- _id: '151'
doi: 10.1109/I2MTC.2014.6860760
keyword:
- bending
- dynamic testing
- measurement
- structural engineering
- vibrations
- measurement durations
- mechanical structures
- multisine measurement technique
- nonlinear peak bending behavior
- prediction method
- time-efficient dynamic analysis
- Heuristic algorithms
- Nonlinear systems
- Oscillators
- Time measurement
- Time-frequency analysis
- Vibrations
language:
- iso: eng
page: 320-324
publication: Instrumentation and Measurement Technology Conference (I2MTC) Proceedings,
2014 IEEE International
status: public
title: Time-efficient dynamic analysis of structures exhibiting nonlinear peak bending
type: conference
user_id: '55222'
year: '2014'
...
---
_id: '9890'
abstract:
- lang: eng
text: Many nonlinear mechanical oscillators show excitation-dependent behavior.
In this paper, a new measurement approach is presented to analyze such structures.
The main advantage of the presented method is the high efficiency, since measurement
duration and loads to the structure are significantly reduced.
author:
- first_name: Christian
full_name: Sprock, Christian
last_name: Sprock
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Sprock C, Sextro W. Time-efficient analysis of nonlinear dynamic behavior.
In: Proceedings in Applied Mathematics and Mechanics 14 (2014), Nr. 1,.
; 2014:293-294.'
apa: Sprock, C., & Sextro, W. (2014). Time-efficient analysis of nonlinear dynamic
behavior. In Proceedings in Applied Mathematics and Mechanics 14 (2014), Nr.
1, (pp. 293–294).
bibtex: '@inproceedings{Sprock_Sextro_2014, title={Time-efficient analysis of nonlinear
dynamic behavior.}, booktitle={Proceedings in Applied Mathematics and Mechanics
14 (2014), Nr. 1,}, author={Sprock, Christian and Sextro, Walter}, year={2014},
pages={293–294} }'
chicago: Sprock, Christian, and Walter Sextro. “Time-Efficient Analysis of Nonlinear
Dynamic Behavior.” In Proceedings in Applied Mathematics and Mechanics 14 (2014),
Nr. 1, 293–94, 2014.
ieee: C. Sprock and W. Sextro, “Time-efficient analysis of nonlinear dynamic behavior.,”
in Proceedings in Applied Mathematics and Mechanics 14 (2014), Nr. 1, 2014,
pp. 293–294.
mla: Sprock, Christian, and Walter Sextro. “Time-Efficient Analysis of Nonlinear
Dynamic Behavior.” Proceedings in Applied Mathematics and Mechanics 14 (2014),
Nr. 1, 2014, pp. 293–94.
short: 'C. Sprock, W. Sextro, in: Proceedings in Applied Mathematics and Mechanics
14 (2014), Nr. 1, 2014, pp. 293–294.'
date_created: 2019-05-20T13:26:56Z
date_updated: 2019-05-20T13:27:29Z
department:
- _id: '151'
language:
- iso: eng
page: 293-294
publication: Proceedings in Applied Mathematics and Mechanics 14 (2014), Nr. 1,
status: public
title: Time-efficient analysis of nonlinear dynamic behavior.
type: conference
user_id: '55222'
year: '2014'
...
---
_id: '9891'
abstract:
- lang: eng
text: A measurement method is presented that combines the advantages of the multisine
measurement technique with a prediction method for peak bending behavior. This
combination allows the analysis of the dynamic behavior of mechanical structures
at distinctly reduced measurement durations and has the advantage of reducing
high excitation impacts on the structure under test. After a brief presentation
of the algorithm, the validity scope of the approach is investigated with emphasis
on an exemplary error investigation.
author:
- first_name: Christian
full_name: Sprock, Christian
last_name: Sprock
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Sprock C, Sextro W. Time-efficient analysis of nonlinear peak bending behavior.
In: Proceedings of ISMA - International Conference of Noise and Vibration.
2014. ; 2014:1-8.'
apa: Sprock, C., & Sextro, W. (2014). Time-efficient analysis of nonlinear peak
bending behavior. In Proceedings of ISMA - International Conference of Noise
and Vibration. 2014 (pp. 1–8).
bibtex: '@inproceedings{Sprock_Sextro_2014, title={Time-efficient analysis of nonlinear
peak bending behavior.}, booktitle={Proceedings of ISMA - International Conference
of Noise and Vibration. 2014}, author={Sprock, Christian and Sextro, Walter},
year={2014}, pages={1–8} }'
chicago: Sprock, Christian, and Walter Sextro. “Time-Efficient Analysis of Nonlinear
Peak Bending Behavior.” In Proceedings of ISMA - International Conference of
Noise and Vibration. 2014, 1–8, 2014.
ieee: C. Sprock and W. Sextro, “Time-efficient analysis of nonlinear peak bending
behavior.,” in Proceedings of ISMA - International Conference of Noise and
Vibration. 2014, 2014, pp. 1–8.
mla: Sprock, Christian, and Walter Sextro. “Time-Efficient Analysis of Nonlinear
Peak Bending Behavior.” Proceedings of ISMA - International Conference of Noise
and Vibration. 2014, 2014, pp. 1–8.
short: 'C. Sprock, W. Sextro, in: Proceedings of ISMA - International Conference
of Noise and Vibration. 2014, 2014, pp. 1–8.'
date_created: 2019-05-20T13:26:57Z
date_updated: 2019-05-20T13:28:24Z
department:
- _id: '151'
language:
- iso: eng
page: 1-8
publication: Proceedings of ISMA - International Conference of Noise and Vibration.
2014
status: public
title: Time-efficient analysis of nonlinear peak bending behavior.
type: conference
user_id: '55222'
year: '2014'
...
---
_id: '9892'
author:
- first_name: Christian
full_name: Sprock, Christian
last_name: Sprock
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Sprock C, Sextro W. Vibration Analysis of Mechanical Structures using Multisine
Excitation Techniques. In: Proceedings of 31st Danubia-Adria Symposium. 2014.
; 2014.'
apa: Sprock, C., & Sextro, W. (2014). Vibration Analysis of Mechanical Structures
using Multisine Excitation Techniques. In Proceedings of 31st Danubia-Adria
Symposium. 2014.
bibtex: '@inproceedings{Sprock_Sextro_2014, title={Vibration Analysis of Mechanical
Structures using Multisine Excitation Techniques}, booktitle={Proceedings of 31st
Danubia-Adria Symposium. 2014}, author={Sprock, Christian and Sextro, Walter},
year={2014} }'
chicago: Sprock, Christian, and Walter Sextro. “Vibration Analysis of Mechanical
Structures Using Multisine Excitation Techniques.” In Proceedings of 31st Danubia-Adria
Symposium. 2014, 2014.
ieee: C. Sprock and W. Sextro, “Vibration Analysis of Mechanical Structures using
Multisine Excitation Techniques,” in Proceedings of 31st Danubia-Adria Symposium.
2014, 2014.
mla: Sprock, Christian, and Walter Sextro. “Vibration Analysis of Mechanical Structures
Using Multisine Excitation Techniques.” Proceedings of 31st Danubia-Adria Symposium.
2014, 2014.
short: 'C. Sprock, W. Sextro, in: Proceedings of 31st Danubia-Adria Symposium. 2014,
2014.'
date_created: 2019-05-20T13:26:59Z
date_updated: 2019-09-16T10:56:34Z
department:
- _id: '151'
language:
- iso: eng
publication: Proceedings of 31st Danubia-Adria Symposium. 2014
quality_controlled: '1'
status: public
title: Vibration Analysis of Mechanical Structures using Multisine Excitation Techniques
type: conference
user_id: '55222'
year: '2014'
...
---
_id: '9893'
author:
- first_name: Ansgar
full_name: Trächtler, Ansgar
last_name: Trächtler
- first_name: Christian
full_name: Hölscher, Christian
last_name: Hölscher
- first_name: Christoph
full_name: Rasche, Christoph
last_name: Rasche
- first_name: Claudia
full_name: Priesterjahn, Claudia
last_name: Priesterjahn
- first_name: Detmar
full_name: Zimmer, Detmar
last_name: Zimmer
- first_name: Jan
full_name: Henning Keßler, Jan
last_name: Henning Keßler
- first_name: Katharin
full_name: Stahl, Katharin
last_name: Stahl
- first_name: Kathrin
full_name: Flaßkamp, Kathrin
last_name: Flaßkamp
- first_name: Mareen
full_name: Vaßholz, Mareen
last_name: Vaßholz
- first_name: Martin
full_name: Krüger, Martin
last_name: Krüger
- first_name: Michael
full_name: Dellnitz, Michael
last_name: Dellnitz
- first_name: Peter
full_name: Iwanek, Peter
last_name: Iwanek
- first_name: Peter
full_name: Reinold, Peter
last_name: Reinold
- first_name: Philip
full_name: Hartmann, Philip
last_name: Hartmann
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
citation:
ama: 'Trächtler A, Hölscher C, Rasche C, et al. Introduction to Self-optimization
and Dependability. In: Gausemeier J, Josef Rammig F, Schäfer W, Sextro W, eds.
Dependability of Self-Optimizing Mechatronic Systems. Lecture Notes in
Mechanical Engineering. Springer Berlin Heidelberg; 2014:1-24. doi:10.1007/978-3-642-53742-4_1'
apa: Trächtler, A., Hölscher, C., Rasche, C., Priesterjahn, C., Zimmer, D., Henning
Keßler, J., … Sextro, W. (2014). Introduction to Self-optimization and Dependability.
In J. Gausemeier, F. Josef Rammig, W. Schäfer, & W. Sextro (Eds.), Dependability
of Self-Optimizing Mechatronic Systems (pp. 1–24). Springer Berlin Heidelberg.
https://doi.org/10.1007/978-3-642-53742-4_1
bibtex: '@inbook{Trächtler_Hölscher_Rasche_Priesterjahn_Zimmer_Henning Keßler_Stahl_Flaßkamp_Vaßholz_Krüger_et
al._2014, series={Lecture Notes in Mechanical Engineering}, title={Introduction
to Self-optimization and Dependability}, DOI={10.1007/978-3-642-53742-4_1},
booktitle={Dependability of Self-Optimizing Mechatronic Systems}, publisher={Springer
Berlin Heidelberg}, author={Trächtler, Ansgar and Hölscher, Christian and Rasche,
Christoph and Priesterjahn, Claudia and Zimmer, Detmar and Henning Keßler, Jan
and Stahl, Katharin and Flaßkamp, Kathrin and Vaßholz, Mareen and Krüger, Martin
and et al.}, editor={Gausemeier, Jürgen and Josef Rammig, Franz and Schäfer, Wilhelm
and Sextro, WalterEditors}, year={2014}, pages={1–24}, collection={Lecture Notes
in Mechanical Engineering} }'
chicago: Trächtler, Ansgar, Christian Hölscher, Christoph Rasche, Claudia Priesterjahn,
Detmar Zimmer, Jan Henning Keßler, Katharin Stahl, et al. “Introduction to Self-Optimization
and Dependability.” In Dependability of Self-Optimizing Mechatronic Systems,
edited by Jürgen Gausemeier, Franz Josef Rammig, Wilhelm Schäfer, and Walter Sextro,
1–24. Lecture Notes in Mechanical Engineering. Springer Berlin Heidelberg, 2014.
https://doi.org/10.1007/978-3-642-53742-4_1.
ieee: A. Trächtler et al., “Introduction to Self-optimization and Dependability,”
in Dependability of Self-Optimizing Mechatronic Systems, J. Gausemeier,
F. Josef Rammig, W. Schäfer, and W. Sextro, Eds. Springer Berlin Heidelberg, 2014,
pp. 1–24.
mla: Trächtler, Ansgar, et al. “Introduction to Self-Optimization and Dependability.”
Dependability of Self-Optimizing Mechatronic Systems, edited by Jürgen
Gausemeier et al., Springer Berlin Heidelberg, 2014, pp. 1–24, doi:10.1007/978-3-642-53742-4_1.
short: 'A. Trächtler, C. Hölscher, C. Rasche, C. Priesterjahn, D. Zimmer, J. Henning
Keßler, K. Stahl, K. Flaßkamp, M. Vaßholz, M. Krüger, M. Dellnitz, P. Iwanek,
P. Reinold, P. Hartmann, T. Meyer, W. Sextro, in: J. Gausemeier, F. Josef Rammig,
W. Schäfer, W. Sextro (Eds.), Dependability of Self-Optimizing Mechatronic Systems,
Springer Berlin Heidelberg, 2014, pp. 1–24.'
date_created: 2019-05-20T13:29:24Z
date_updated: 2019-05-20T13:32:38Z
department:
- _id: '151'
doi: 10.1007/978-3-642-53742-4_1
editor:
- first_name: Jürgen
full_name: Gausemeier, Jürgen
last_name: Gausemeier
- first_name: Franz
full_name: Josef Rammig, Franz
last_name: Josef Rammig
- first_name: Wilhelm
full_name: Schäfer, Wilhelm
last_name: Schäfer
- first_name: Walter
full_name: Sextro, Walter
last_name: Sextro
language:
- iso: eng
page: 1-24
publication: Dependability of Self-Optimizing Mechatronic Systems
publication_identifier:
isbn:
- 978-3-642-53741-7
publisher: Springer Berlin Heidelberg
series_title: Lecture Notes in Mechanical Engineering
status: public
title: Introduction to Self-optimization and Dependability
type: book_chapter
user_id: '55222'
year: '2014'
...
---
_id: '9894'
author:
- first_name: Ansgar
full_name: Trächtler, Ansgar
last_name: Trächtler
- first_name: Bernd
full_name: Kleinjohann, Bernd
last_name: Kleinjohann
- first_name: Christian
full_name: Heinzemann, Christian
last_name: Heinzemann
- first_name: Christoph
full_name: Rasche, Christoph
last_name: Rasche
- first_name: Claudia
full_name: Priesterjahn, Claudia
last_name: Priesterjahn
- first_name: Dominik
full_name: Steenken, Dominik
last_name: Steenken
- first_name: Heike
full_name: Wehrheim, Heike
last_name: Wehrheim
- first_name: Jürgen
full_name: Gausemeier, Jürgen
last_name: Gausemeier
- first_name: Kathrin
full_name: Flaßkamp, Kathrin
last_name: Flaßkamp
- first_name: Lisa
full_name: Kleinjohann, Lisa
last_name: Kleinjohann
- first_name: Martin
full_name: Krüger, Martin
last_name: Krüger
- first_name: Peter
full_name: Iwanek, Peter
last_name: Iwanek
- first_name: Philip
full_name: Hartmann, Philip
last_name: Hartmann
- first_name: Rafal
full_name: Dorociak, Rafal
last_name: Dorociak
- first_name: Stefan
full_name: Groesbrink, Stefan
last_name: Groesbrink
- first_name: Steffen
full_name: Ziegert, Steffen
last_name: Ziegert
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Wilhelm
full_name: Schäfer, Wilhelm
last_name: Schäfer
citation:
ama: 'Trächtler A, Kleinjohann B, Heinzemann C, et al. Case Study. In: Gausemeier
J, Josef Rammig F, Schäfer W, Sextro W, eds. Dependability of Self-Optimizing
Mechatronic Systems. Lecture Notes in Mechanical Engineering. Springer Berlin
Heidelberg; 2014:173-188. doi:10.1007/978-3-642-53742-4_4'
apa: Trächtler, A., Kleinjohann, B., Heinzemann, C., Rasche, C., Priesterjahn, C.,
Steenken, D., … Schäfer, W. (2014). Case Study. In J. Gausemeier, F. Josef Rammig,
W. Schäfer, & W. Sextro (Eds.), Dependability of Self-Optimizing Mechatronic
Systems (pp. 173–188). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-53742-4_4
bibtex: '@inbook{Trächtler_Kleinjohann_Heinzemann_Rasche_Priesterjahn_Steenken_Wehrheim_Gausemeier_Flaßkamp_Kleinjohann_et
al._2014, series={Lecture Notes in Mechanical Engineering}, title={Case Study},
DOI={10.1007/978-3-642-53742-4_4},
booktitle={Dependability of Self-Optimizing Mechatronic Systems}, publisher={Springer
Berlin Heidelberg}, author={Trächtler, Ansgar and Kleinjohann, Bernd and Heinzemann,
Christian and Rasche, Christoph and Priesterjahn, Claudia and Steenken, Dominik
and Wehrheim, Heike and Gausemeier, Jürgen and Flaßkamp, Kathrin and Kleinjohann,
Lisa and et al.}, editor={Gausemeier, Jürgen and Josef Rammig, Franz and Schäfer,
Wilhelm and Sextro, WalterEditors}, year={2014}, pages={173–188}, collection={Lecture
Notes in Mechanical Engineering} }'
chicago: Trächtler, Ansgar, Bernd Kleinjohann, Christian Heinzemann, Christoph Rasche,
Claudia Priesterjahn, Dominik Steenken, Heike Wehrheim, et al. “Case Study.” In
Dependability of Self-Optimizing Mechatronic Systems, edited by Jürgen
Gausemeier, Franz Josef Rammig, Wilhelm Schäfer, and Walter Sextro, 173–88. Lecture
Notes in Mechanical Engineering. Springer Berlin Heidelberg, 2014. https://doi.org/10.1007/978-3-642-53742-4_4.
ieee: A. Trächtler et al., “Case Study,” in Dependability of Self-Optimizing
Mechatronic Systems, J. Gausemeier, F. Josef Rammig, W. Schäfer, and W. Sextro,
Eds. Springer Berlin Heidelberg, 2014, pp. 173–188.
mla: Trächtler, Ansgar, et al. “Case Study.” Dependability of Self-Optimizing
Mechatronic Systems, edited by Jürgen Gausemeier et al., Springer Berlin Heidelberg,
2014, pp. 173–88, doi:10.1007/978-3-642-53742-4_4.
short: 'A. Trächtler, B. Kleinjohann, C. Heinzemann, C. Rasche, C. Priesterjahn,
D. Steenken, H. Wehrheim, J. Gausemeier, K. Flaßkamp, L. Kleinjohann, M. Krüger,
P. Iwanek, P. Hartmann, R. Dorociak, S. Groesbrink, S. Ziegert, T. Meyer, W. Sextro,
W. Schäfer, in: J. Gausemeier, F. Josef Rammig, W. Schäfer, W. Sextro (Eds.),
Dependability of Self-Optimizing Mechatronic Systems, Springer Berlin Heidelberg,
2014, pp. 173–188.'
date_created: 2019-05-20T13:29:25Z
date_updated: 2019-05-20T13:34:38Z
department:
- _id: '151'
doi: 10.1007/978-3-642-53742-4_4
editor:
- first_name: Jürgen
full_name: Gausemeier, Jürgen
last_name: Gausemeier
- first_name: Franz
full_name: Josef Rammig, Franz
last_name: Josef Rammig
- first_name: Wilhelm
full_name: Schäfer, Wilhelm
last_name: Schäfer
- first_name: Walter
full_name: Sextro, Walter
last_name: Sextro
language:
- iso: eng
page: 173-188
publication: Dependability of Self-Optimizing Mechatronic Systems
publication_identifier:
isbn:
- 978-3-642-53741-7
publisher: Springer Berlin Heidelberg
series_title: Lecture Notes in Mechanical Engineering
status: public
title: Case Study
type: book_chapter
user_id: '55222'
year: '2014'
...
---
_id: '9895'
abstract:
- lang: eng
text: Power semiconductor modules are used to control and switch high electrical
currents and voltages. Within the power module package wire bonding is used as
an interconnection technology. In recent years, aluminum wire has been used preferably,
but an ever-growing market of powerful and efficient power modules requires a
material with better mechanical and electrical properties. For this reason, a
technology change from aluminum to copper is indispensable. However, the copper
wire bonding process reacts more sensitive to parameter changes. This makes manufacturing
reliable copper bond connections a challenging task. The aim of the BMBF funded
project Itsowl-InCuB is the development of self-optimizing techniques to enable
the reliable production of copper bond connections under varying conditions. A
model of the process is essential to achieve this aim. This model needs to include
the dynamic elasto-plastic deformation, the ultrasonic softening effect and the
proceeding adhesion between wire and substrate. This paper focusses on the pre-deformation
process. In the touchdown phase, the wire is pressed into the V-groove of the
tool and a small initial contact area between wire and substrate arise. The local
characteristics of the material change abruptly because of the cold forming. Consequently,
the pre-deformation has a strong effect on the joining process. In [1], a pre-cleaning
effect during the touchdown process of aluminum wires by cracking of oxide layers
was presented. These interactions of the process parameters are still largely
unknown for copper. In a first step, this paper validates the importance of modeling
the pre-deformation by showing its impact on the wire deformation characteristic
experimentally. Creating cross-section views of pre-deformed copper wires has
shown a low deformation degree compared to aluminum. By using a digital microscope
and a scanning confocal microscope an analysis about the contact areas and penetration
depths after touchdown has been made. Additionally, it has to be taken into account
that the dynamical touchdown force depends on the touchdown speed and the touchdown
force set in the bonding machine. In order to measure the overshoot in the force
signals, a strain gauge sensor has been used. Subsequently, the affecting factors
have been interpreted independently Furthermore, the material properties of copper
wire have been investigated with tensile tests and hardness measurements. In a
second step, the paper presents finite element models of the touchdown process
for source and destination bonds. These models take the measured overshoot in
the touchdown forces into account. A multi-linear, isotropic material model has
been selected to map the material properties of the copper. A validation of the
model with the experimental determined contact areas, normal pressures and penetration
depths reveals the high model quality. Thus, the simulation is able to calculate
and visualize the three dimensional pre-deformation with an integrated material
parameter of the wire if the touchdown parameters of the bonding machine are known.
Based on the calculated deformation degrees of wire and substrate, it is probably
possible to investigate the effect of the pre-deformation on the pre-cleaning
phase in the copper wire bonding.
author:
- first_name: Andreas
full_name: Unger, Andreas
last_name: Unger
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Simon
full_name: Althoff, Simon
last_name: Althoff
- first_name: Paul
full_name: Eichwald, Paul
last_name: Eichwald
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Florian
full_name: Eacock, Florian
last_name: Eacock
- first_name: Michael
full_name: Brökelmann, Michael
last_name: Brökelmann
citation:
ama: 'Unger A, Sextro W, Althoff S, et al. Experimental and Numerical Simulation
Study of Pre-Deformed Heavy Copper Wire Wedge Bonds. In: Proceedings of the
47th International Symposium on Microelectronics (IMAPS). San Diego, CA, US;
2014:289-294.'
apa: Unger, A., Sextro, W., Althoff, S., Eichwald, P., Meyer, T., Eacock, F., &
Brökelmann, M. (2014). Experimental and Numerical Simulation Study of Pre-Deformed
Heavy Copper Wire Wedge Bonds. In Proceedings of the 47th International Symposium
on Microelectronics (IMAPS) (pp. 289–294). San Diego, CA, US.
bibtex: '@inproceedings{Unger_Sextro_Althoff_Eichwald_Meyer_Eacock_Brökelmann_2014,
place={San Diego, CA, US}, title={Experimental and Numerical Simulation Study
of Pre-Deformed Heavy Copper Wire Wedge Bonds}, booktitle={Proceedings of the
47th International Symposium on Microelectronics (IMAPS)}, author={Unger, Andreas
and Sextro, Walter and Althoff, Simon and Eichwald, Paul and Meyer, Tobias and
Eacock, Florian and Brökelmann, Michael}, year={2014}, pages={289–294} }'
chicago: Unger, Andreas, Walter Sextro, Simon Althoff, Paul Eichwald, Tobias Meyer,
Florian Eacock, and Michael Brökelmann. “Experimental and Numerical Simulation
Study of Pre-Deformed Heavy Copper Wire Wedge Bonds.” In Proceedings of the
47th International Symposium on Microelectronics (IMAPS), 289–94. San Diego,
CA, US, 2014.
ieee: A. Unger et al., “Experimental and Numerical Simulation Study of Pre-Deformed
Heavy Copper Wire Wedge Bonds,” in Proceedings of the 47th International Symposium
on Microelectronics (IMAPS), 2014, pp. 289–294.
mla: Unger, Andreas, et al. “Experimental and Numerical Simulation Study of Pre-Deformed
Heavy Copper Wire Wedge Bonds.” Proceedings of the 47th International Symposium
on Microelectronics (IMAPS), 2014, pp. 289–94.
short: 'A. Unger, W. Sextro, S. Althoff, P. Eichwald, T. Meyer, F. Eacock, M. Brökelmann,
in: Proceedings of the 47th International Symposium on Microelectronics (IMAPS),
San Diego, CA, US, 2014, pp. 289–294.'
date_created: 2019-05-20T13:35:09Z
date_updated: 2020-05-07T05:33:47Z
department:
- _id: '151'
keyword:
- pre-deformation
- copper wire bonding
- finite element model
language:
- iso: eng
page: 289-294
place: San Diego, CA, US
project:
- _id: '92'
grant_number: 02 PQ2210
name: Intelligente Herstellung zuverlässiger Kupferbondverbindungen
publication: Proceedings of the 47th International Symposium on Microelectronics (IMAPS)
status: public
title: Experimental and Numerical Simulation Study of Pre-Deformed Heavy Copper Wire
Wedge Bonds
type: conference
user_id: '210'
year: '2014'
...
---
_id: '9896'
abstract:
- lang: eng
text: In power electronics, ultrasonic wire bonding is used to connect the electrical
terminals of power modules. To implement a self-optimization technique for ultrasonic
wire bonding machines, a model of the process is essential. This model needs to
include the so called ultrasonic softening effect. It is a key effect within the
wire bonding process primarily enabling the robust interconnection between the
wire and a substrate. However, the physical modeling of the ultrasonic softening
effect is notoriously difficult because of its highly non-linear character and
the absence of a proper measurement method. In a first step, this paper validates
the importance of modeling the ultrasonic softening by showing its impact on the
wire deformation characteristic experimentally. In a second step, the paper presents
a data-driven model of the ultrasonic softening effect which is constructed from
data using machine learning techniques. A typical caveat of data-driven modeling
is the need for training data that cover the considered domain of process parameters
in order to achieve accurate generalization of the trained model to new process
configurations. In practice, however, the space of process parameters can only
be sampled sparsely. In this paper, a novel technique is applied which enables
the integration of prior knowledge about the process into the datadriven modeling
process. It turns out that this approach results in accurate generalization of
the data-driven model to unseen process parameters from sparse data.
author:
- first_name: Andreas
full_name: Unger, Andreas
last_name: Unger
- first_name: Walter
full_name: Sextro, Walter
id: '21220'
last_name: Sextro
- first_name: Simon
full_name: Althoff, Simon
last_name: Althoff
- first_name: Tobias
full_name: Meyer, Tobias
last_name: Meyer
- first_name: Michael
full_name: Brökelmann, Michael
last_name: Brökelmann
- first_name: Klaus
full_name: Neumann, Klaus
last_name: Neumann
- first_name: René Felix
full_name: Reimann, René Felix
last_name: Reimann
- first_name: Karsten
full_name: Guth, Karsten
last_name: Guth
- first_name: Daniel
full_name: Bolowski, Daniel
last_name: Bolowski
citation:
ama: 'Unger A, Sextro W, Althoff S, et al. Data-driven Modeling of the Ultrasonic
Softening Effect for Robust Copper Wire Bonding. In: Proceedings of 8th International
Conference on Integrated Power Electronic Systems. Vol 141. ; 2014:175-180.'
apa: Unger, A., Sextro, W., Althoff, S., Meyer, T., Brökelmann, M., Neumann, K.,
… Bolowski, D. (2014). Data-driven Modeling of the Ultrasonic Softening Effect
for Robust Copper Wire Bonding. In Proceedings of 8th International Conference
on Integrated Power Electronic Systems (Vol. 141, pp. 175–180).
bibtex: '@inproceedings{Unger_Sextro_Althoff_Meyer_Brökelmann_Neumann_Reimann_Guth_Bolowski_2014,
title={Data-driven Modeling of the Ultrasonic Softening Effect for Robust Copper
Wire Bonding}, volume={141}, booktitle={Proceedings of 8th International Conference
on Integrated Power Electronic Systems}, author={Unger, Andreas and Sextro, Walter
and Althoff, Simon and Meyer, Tobias and Brökelmann, Michael and Neumann, Klaus
and Reimann, René Felix and Guth, Karsten and Bolowski, Daniel}, year={2014},
pages={175–180} }'
chicago: Unger, Andreas, Walter Sextro, Simon Althoff, Tobias Meyer, Michael Brökelmann,
Klaus Neumann, René Felix Reimann, Karsten Guth, and Daniel Bolowski. “Data-Driven
Modeling of the Ultrasonic Softening Effect for Robust Copper Wire Bonding.” In
Proceedings of 8th International Conference on Integrated Power Electronic
Systems, 141:175–80, 2014.
ieee: A. Unger et al., “Data-driven Modeling of the Ultrasonic Softening
Effect for Robust Copper Wire Bonding,” in Proceedings of 8th International
Conference on Integrated Power Electronic Systems, 2014, vol. 141, pp. 175–180.
mla: Unger, Andreas, et al. “Data-Driven Modeling of the Ultrasonic Softening Effect
for Robust Copper Wire Bonding.” Proceedings of 8th International Conference
on Integrated Power Electronic Systems, vol. 141, 2014, pp. 175–80.
short: 'A. Unger, W. Sextro, S. Althoff, T. Meyer, M. Brökelmann, K. Neumann, R.F.
Reimann, K. Guth, D. Bolowski, in: Proceedings of 8th International Conference
on Integrated Power Electronic Systems, 2014, pp. 175–180.'
date_created: 2019-05-20T13:38:10Z
date_updated: 2020-05-07T05:33:47Z
department:
- _id: '151'
intvolume: ' 141'
language:
- iso: eng
page: 175-180
project:
- _id: '92'
grant_number: 02 PQ2210
name: Intelligente Herstellung zuverlässiger Kupferbondverbindungen
publication: Proceedings of 8th International Conference on Integrated Power Electronic
Systems
status: public
title: Data-driven Modeling of the Ultrasonic Softening Effect for Robust Copper Wire
Bonding
type: conference
user_id: '210'
volume: 141
year: '2014'
...