TY  - JOUR
A1  - Förster, Arnold
A1  - Tillmann, K.
A1  - Gerthsen, D.
A1  - Pfundstein, P.
T1  - Structural transformations and strain relaxation mechanisms of In0.6Ga0.4As islands grown by molecular beam epitaxy on GaAs(001) substrates / Tillmann, K. ; Gerthsen, D. ; Pfundstein, P. ; Förster, A. ; Urban, K.
JF  - Journal of applied physics. 78 (1995), H. 6
Y1  - 1995
SN  - 0021-8979
SP  - 3824
EP  - 3832
ER  - 
TY  - BOOK
A1  - Meskouris, Konstantin
A1  - Butenweg, Christoph
A1  - Hinzen, Klaus-G.
A1  - Höffer, Rüdiger
T1  - Structural Dynamics with Applications in Earthquake and Wind Engineering
Y1  - 2019
SN  - 978-3-662-57550-5
U6  - https://doi.org/10.1007/978-3-662-57550-5
PB  - Springer
CY  - Berlin, Heidelberg
ER  - 
TY  - JOUR
A1  - Rosenauer, A.
A1  - Oberst, W.
A1  - Litvinov, D.
A1  - Gerthsen, D.
A1  - Förster, Arnold
A1  - Schmidt, R.
T1  - Structural and Chemical Investigation of In-0.6Ga0.4As Stranski-Krastanow Layers Burried in GaAs by Transmission Electron Microscopy
JF  - Physical Review B. 61 (2000), H. 12
Y1  - 2000
SN  - 1095-3795
SP  - 8276
EP  - 8288
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lentzen, M.
A1  - Gerthsen, D.
T1  - Strain relaxation of lattice-mismatched In0.2Ga0.8As/GaAs superlattices on GaAs(001) substrates / M. Lentzen ; D. Gerthsen ; A. Förster ...
JF  - Microscopy of semiconducting materials 1995 : proceedings of the Institute of Physics Conference held at Oxford University, 20 - 23 March 1995 / Ed. by A G Cullis ... - (Conference series / Institute of Physics ; 146)
Y1  - 1995
SN  - 0-7503-0347-6
N1  - MSM <9, 1995, Oxford> ; Institut of Physics <London>
SP  - 357
EP  - ff.
PB  - Institute of Physics
CY  - Bristol [u.a.]
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Rosenauer, A.
A1  - Remmele, T.
T1  - Strain determination in mismatched semiconductor heterostructures by the digital analysis of lattice images / A. Rosenauer ; T. Remmele ; U. Fischer ; A. Förster ...
JF  - Microscopy of semiconducting materials 1997 : proceedings of the Royal Microscopical Society Conference held at Oxford University, 7 - 10 April 1997 / ed. by A. G. Cullis ... - (Conference series / Institute of Physics ; 157)
Y1  - 1997
SN  - 0-7503-0464-2
N1  - MSM <10, 1997, Oxford> ; Conference on Microscopy of Semiconducting Materials <10, 1997, Oxford> ; Institut of Physics <London>
SP  - 39
EP  - ff.
PB  - Institute of Physics
CY  - Bristol [u.a.]
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Ohler, C.
A1  - Kohleick, R.
T1  - Strain dependence of the valence-band offset in InAs/GaAs heterojunctions determined by ultraviolet photoelectron spectroscopy / C. Ohler ; R. Kohleick ; A. Förster ...
JF  - Physical Review B . 50 (1994), H. 11
Y1  - 1994
SN  - 0163-1829
N1  - 2. ISSN: 1098-0121 ; ISSN der E-Ausg.: 1095-3795
SP  - 7833
EP  - 7837
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Ohler, C.
A1  - Moers, J.
T1  - Strain dependence of the valence-band offset in arsenide compound heterojunctions determined by photoelectron spectroscopy / C. Ohler ; J. Moers ; A. Förster ...
JF  - Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures. 13 (1993), H. 4
Y1  - 1993
SN  - 1071-1023
N1  - ISSN der E-Ausg.: 0734-211X
SP  - 1728
EP  - 1735
ER  - 
TY  - CHAP
A1  - Meskouris, Konstantin
A1  - Butenweg, Christoph
A1  - Hinzen, Klaus-G.
A1  - Höffer, Rüdiger
T1  - Stochasticity of Wind Processes and Spectral Analysis of Structural Gust Response
T2  - Structural Dynamics with Applications in Earthquake and Wind Engineering
N2  - Wind loads have great impact on many engineering structures. Wind storms often cause irreparable damage to the buildings which are exposed to it. Along with the earthquakes, wind represents one of the most common environmental load on structures and is relevant for limit state design. Modern wind codes indicate calculation procedures allowing engineers to deal with structural systems, which are susceptible to conduct wind-excited oscillations. In the codes approximate formulas for wind buffeting are specified which relate the dynamic problem to rather abstract parameter functions. The complete theory behind is not visible in order to simplify the applicability of the procedures. This chapter derives the underlying basic relations of the spectral method for wind buffeting and explains the main important applications of it in order to elucidate part of the theoretical background of computations after the new codes. The stochasticity of the wind processes is addressed, and the analysis of analytical as well as measurement based power spectra is outlined. Short MATLAB codes are added to the Appendix 3 which carry out the computation of a single sided auto-spectrum from a statistically stationary, discrete stochastic process. Two examples are presented.
KW  - Wind turbulence
KW  - Gust wind response
KW  - Spectral analysis
Y1  - 2019
SN  - 978-3-662-57550-5 (Online)
SN  - 978-3-662-57548-2 (Print)
U6  - https://doi.org/10.1007/978-3-662-57550-5_3
SP  - 153
EP  - 196
PB  - Springer
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Goldbach, Daniel
A1  - Ament, Christoph
ED  - Scharff, Peter
T1  - Stabilized reversing with vehicle trailer combinations
T2  - Crossing borders within the ABC : automation, biomedical engineering and computer science; proceedings; 55. IWK Internationales Wissenschaftliches Kolloquium; 13 - 17 September 2010, Ilmenau
Y1  - 2010
SN  - 978-3-938843-53-6
SP  - 352
EP  - 357
PB  - Verl. ISLE
CY  - Ilmenau
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Hartmann, A.
A1  - Dieker, Ch.
A1  - Hollfelder, M.
T1  - Spontaneous formation of tilted AlGaAS/GaAs superlattice during AlGaAs growth. Hartmann, A.; Dieker, Ch.; Hollfelder, M.; Hardtdegen, H.; Förster, A.; Lüth, H.
JF  - Applied Surface Science. 123-124 (1998)
Y1  - 1998
SN  - 0169-4332
N1  - = Proceedings of the Sixth International Conference on the Formation of Semiconductor Interfaces
SP  - 704
EP  - 709
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Schmidt, T.
A1  - Haug, R. J.
T1  - Spectroscopy of the single-particle states of a quantum-dot molecule / T. Schmidt ; R. J. Haug ; K. v. Klitzing ; A. Förster ...
JF  - Physical review letters. 78 (1997), H. 8
Y1  - 1997
SN  - 0031-9007
N1  - ISSN der E-Ausg.: 1079-7114
SP  - 1544
EP  - 1547
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Schmidt, T.
A1  - Haug, R. J.
T1  - Spectroscopy of local density of states fluctuations in a disordered conductor / T. Schmidt ; R. J. Haug ; V. I. Fal'ko ... A. Förster ...
JF  - Europhysics letters. 36 (1996), H. 1
Y1  - 1996
SN  - 1286-4854
SP  - 61
EP  - 66
ER  - 
TY  - JOUR
A1  - Vitusevich, S. A.
A1  - Förster, Arnold
A1  - Reetz, W.
A1  - Lüth, H.
A1  - Belyaev, A. E.
A1  - Danylyuk, S. V.
T1  - Spectral Responsivity of single-quantum-well photodetectors
JF  - Applied Physics Letters. 77 (2000), H. 1
Y1  - 2000
SN  - 1077-3118
SP  - 16
EP  - 18
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Kordos, P.
A1  - Marso, M.
T1  - Space-charge controlled conduction in low-temperature-grown molecular-beam epitaxial GaAs / P. Kordos ; M. Marso, ; A. Förster ...
JF  - Applied physics letters. 71 (1997), H. 8
Y1  - 1997
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 1118
EP  - 1120
ER  - 
TY  - CHAP
A1  - Lo Piparo, G. B.
A1  - Kern, Alexander
A1  - Mazzetti, C.
T1  - Some masterpoints about risk due to lightning
T2  - International Conference on Lightning Protection (ICLP) : 2 - 7 Sept. 2012, Vienna
Y1  - 2012
SN  - 978-1-4673-1896-9 (E-Book) ; 978-1-4673-1898-3 (Print)
SP  - 1
EP  - 6
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Müller, C.
A1  - Vieira da Silva, E.
T1  - Solare Meerwasser-Entsalzungsanlagen mit mehrstufiger Wärmerückgewinnung / C. Müller ; K. Schwarzer ; E. Vieira da Silva ...
JF  - 14. Symposium Thermische Solarenergie : 12. bis 14. Mai, 2004, Kloster Banz / [Veranst.: OTTI Energie-Kolleg]
Y1  - 2004
SN  - 3-934681-33-6
N1  - Symposium Thermische Solarenergie ; (14, 2004, Kloster Banz) ; Energie-Kolleg ; (Regensburg) ; OTTI-Symposium Thermische Solarenergie ; Parallel als CD-ROM-Ausg. ersch.
SP  - 154
EP  - 159
PB  - Ostbayerisches Technologie-Transfer-Institut
CY  - Regensburg
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Hoffschmidt, Bernhard
T1  - Solar tower power plant in Germany and future perspectives of the development of the technology in Greece and Cyprus
JF  - Renewable Energy . 35 (2010), H. 7
Y1  - 2010
SN  - 0960-1481
SP  - 1352
EP  - 1356
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Müller, C.
A1  - Mertes, C.
T1  - Solar thermal desalination systems with multi-layer heat recovery / C. Müller ; K. Schwarzer ; C. Mertes ...
JF  - Proceedings / organised by: ISES Europe ... [Ed.: Deutsche Gesellschaft für Sonnenenergie e.V. - DGS, Munich ; PSE GmbH - Forschung Entwicklung Marketing, Freiburg]. - Vol 1
Y1  - 2004
SN  - 3-9809656-1-9
N1  - EuroSun <5, 2004, Freiburg, Breisgau> ; Internationales Sonnenforum <14, 2004, Freiburg, Breisgau> ; Deutsche Gesellschaft für Sonnenenergie ; CD-ROM-Ausg.: ISBN 3-9809656-4-3
SP  - 1-647-1-652
PB  - PSE
CY  - Freiburg [Breisgau]
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Silva, Maria Eugênia Vieira da
A1  - Faber, Christian
A1  - Müller, Christoph
T1  - Solar thermal desalination system with heat recovery
JF  - Desalination. 137 (2001), H. 1-3
Y1  - 2001
SN  - 0011-9164
SP  - 23
EP  - 29
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Silva, Maria Eugênia Vieira da
T1  - Solar cooking system with or without heat storage for families and institutions
JF  - Solar energy. 75 (2003), H. 1
Y1  - 2003
SN  - 0038-092x
N1  - 2. ISSN: 0375-9865
SP  - 34
EP  - 41
ER  - 
TY  - CHAP
A1  - Michel, Philipp
A1  - Rosin, Julia
A1  - Butenweg, Christoph
A1  - Klinkel, Sven
T1  - Soil-dependent earthquake spectra in the analysis of liquid-storage-tanks on compliant soil
T2  - Seismic design of industrial facilities 2020
N2  - A further development of the Added-Mass-Method allows the combined representation of the effects of both soil-structure-interaction and fluid-structure interaction on a liquid-filled-tank in one model. This results in a practical method for describing the dynamic fluid pressure on the tank shell during joint movement. The fluid pressure is calculated on the basis of the tank's eigenform and the earthquake acceleration and represented by additional masses on the shell. The bearing on compliant ground is represented by replacement springs, which are calculated dependent on the local soil composition. The influence of the shear modulus of the compliant soil is clearly visible in the pressure curves and the stress distribution in the shell. The acceleration spectra are also dependent on soil stiffness. According to Eurocode-8 the acceleration spectra are determined for fixed soil-classes, instead of calculating the accelerations for each site in direct dependence on the soil composition. This leads to unrealistic sudden changes in the system's response. Therefore, earthquake spectra are calculated for different soil models in direct dependence of the shear modulus. Thus, both the acceleration spectra and the replacement springs match the soil composition. This enables a reasonable and consistent calculation of the system response for the actual conditions at each site.
Y1  - 2020
SN  - 978-3-86359-729-0
N1  - 2nd International Conference on Seismic Design of Industrial Facilities (Aachen, Germany, March 4-5, 2020)
SP  - 245
EP  - 254
PB  - Apprimus Verlag
CY  - Aachen
ER  - 
TY  - GEN
A1  - Nobisrath, Ulrich
A1  - Zündorf, Albert
A1  - George, Tobias
A1  - Ruben, Jubeh
A1  - Kraft, Bodo
T1  - Software Stories Guide
N2  - Software Stories are a simple graphical notation for requirements analysis and design in agile software projects. Software Stories are based on example scenarios. Example scenarios facilitate the communication between lay people or domain experts and software experts.
Y1  - 2017
ER  - 
TY  - CHAP
A1  - Steuer-Dankert, Linda
A1  - Leicht-Scholten, Carmen
T1  - Social responsibility and innovation - Key competencies for engineers
T2  - ICERI 2016: 9th International Conference of Education, Research and Innovation: Conference Proceedings : Seville (Spain), 14-16 November
N2  - Engineers are of particular importance for the societies of tomorrow. The big social challenges society has to cope with in future, can only be mastered, if engineers link the development and innovation process closely with the requirements of people. As a result, in the frame of the innovation process engineers have to design and develop products for diverse users. Therefore, the consideration of diversity in this process is a core competence engineers should have. Implementing the consideration of diverse requirements into product design is also linked to the development of sustainable products and thus leads to social responsible research and development, the core concept formulated by the EU.
For this reason, future engineers should be educated to look at the technical perspectives of a problem embedded in the related questions within societies they are developing their artefacts for. As a result, the aim of teaching engineering should be to prepare engineers for these requirements and to draw attention to the diverse needs in a globalized world.
To match the competence profiles of future engineers to the global challenges and the resulting social responsibility, RWTH Aachen University, one of the leading technical universities in Germany, has established the bridging professorship “Gender and Diversity in Engineering” (GDI) which educates engineers with an interdisciplinary approach to expand engineering limits. The interdisciplinary teaching concept of the research group pursues an approach which imparts an application oriented Gender and Diversity expertise to future engineers. In the frame of an established teaching concept, which is a result of experiences and expertise of the research group, students gain theoretical knowledge about Gender and Diversity and learn how to transfer their knowledge into their later field of action.
In the frame of the conference the institutional approach will be presented as well as the teaching concept which will be introduced by concrete course examples.
KW  - diversity
KW  - innovation
KW  - social responsible engineering
KW  - engineering education
Y1  - 2016
SN  - 978-84-617-5895-1
U6  - https://doi.org/10.21125/iceri.2016.0353
SN  - 2340-1095
SP  - 5967
EP  - 5976
ER  - 
TY  - JOUR
A1  - Rath, V.
A1  - Mottaghy, Darius
T1  - Smooth inversion for ground surface temperature histories: estimating the optimum regularization parameter by generalized cross-validation
JF  - Geophysical Journal International
Y1  - 2007
U6  - https://doi.org/10.1111/j.1365-246X.2007.03587.x
SN  - 1365-246X
VL  - 171
IS  - 3
SP  - 1440
EP  - 1448
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Schmidt, T.
A1  - Tewordt, M.
T1  - Single-electron-tunneling spectroscopy of asymmetric laterally confined double-barrier heterostructures / T. Schmidt ; M. Tewordt ; R. J. Haug ... A. Förster ...
JF  - Solid state electronics. 40 (1996), H. 1-8
Y1  - 1996
SN  - 0038-1101
SP  - 15
EP  - 19
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Schmidt, T.
A1  - Haug, R. J.
T1  - Single-electron transport in small resonant-tunneling diodes with various barrier-thickness asymmetries / T. Schmidt ; R. J. Haug ; K. v. Klitzing ; A. Förster ...
JF  - Physical review / B, Condensed matter and materials physics. 55 (1997), H. 4
Y1  - 1997
SN  - 1095-3795
SP  - 2230
EP  - 2236
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Griebel, M.
A1  - Indlekofer, K.M.
A1  - Lüth, H.
T1  - Single electron transport in resonant tunnelling diodes laterally confined by ion implantation. Griebel, M.; Indlekofer, K.M.; Förster, A.; Lüth, H.
JF  - Journal of  Physics D: Applied  Physics. 32 (1999), H. 14
Y1  - 1999
SN  - 1361-6463
SP  - 1729
EP  - 1733
ER  - 
TY  - CHAP
A1  - El Moussaoui, Noureddine
A1  - Kassmi, Khalil
A1  - Alexopoulos, Spiros
A1  - Schwarzer, Klemens
A1  - Chayeb, Hamid
A1  - Bachiri, Najib
T1  - Simulation studies on a new innovative design of a hybrid solar distiller MSDH alimented with a thermal and photovoltaic energy
T2  - Materialstoday: Proceedings
N2  - In this paper, we present the structure, the simulation the operation of a multi-stage, hybrid solar desalination system (MSDH), powered by thermal and photovoltaic (PV) (MSDH) energy. The MSDH system consists of a lower basin, eight horizontal stages, a field of four flat thermal collectors with a total area of 8.4 m2, 3 Kw PV panels and solar batteries. During the day the system is heated by thermal energy, and at night by heating resistors, powered by solar batteries. These batteries are charged by the photovoltaic panels during the day. More specifically, during the day and at night, we analyse the temperature of the stages and the production of distilled water according to the solar irradiation intensity and the electric heating power, supplied by the solar batteries. The simulations were carried out in the meteorological conditions of the winter month (February 2020), presenting intensities of irradiance and ambient temperature reaching 824 W/m2 and 23 °C respectively. The results obtained show that during the day the system is heated by the thermal collectors, the temperature of the stages and the quantity of water produced reach 80 °C and 30 Kg respectively. At night, from 6p.m. the system is heated by the electric energy stored in the batteries, the temperature of the stages and the quantity of water produced reach respectively 90 °C and 104 Kg for an electric heating power of 2 Kw. Moreover, when the electric power varies from 1 Kw to 3 Kw the quantity of water produced varies from 92 Kg to 134 Kg. The analysis of these results and their comparison with conventional solar thermal desalination systems shows a clear improvement both in the heating of the stages, by 10%, and in the quantity of water produced by a factor of 3.
Y1  - 2021
U6  - https://doi.org/10.1016/j.matpr.2021.03.115
SN  - 2214-7853
N1  - The Fourth edition of the International Conference on Materials & Environmental Science (ICMES 2020), virtual conference, November 18-28, 2020, Morocco
VL  - 45
IS  - 8
SP  - 7653
EP  - 7660
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Frentzel, Ralf
A1  - Behrens, Jörg
T1  - Simulation of the transient voltages in the auxiliary power network of a large power plant in case of a direct lightning strike to the high-voltage overhead transmission line
Y1  - 2010
N1  - 30th International Conference on Lightning Protection, Cagliari (Italien), 2010
SP  - 749-1
EP  - 749-7
ER  - 
TY  - CHAP
A1  - Augenstein, Eckardt
A1  - Herbergs, S.
A1  - Kuperjans, Isabel
A1  - Lucas, K.
ED  - Kjelstrup, Signe
T1  - Simulation of industrial energy supply systems with integrated cost optimization
T2  - Proceedings of ECOS 2005, the 18th International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems : Trondheim, Norway, June 20 - 22, 2005. - Vol. 2
Y1  - 2005
SN  - 82-519-2041-8
N1  - CD-ROM-Ausg. u.d.T.: Shaping our future energy systems
SP  - 627
EP  - 634
PB  - Tapir Academic Press
CY  - Trondheim
ER  - 
TY  - JOUR
A1  - Kern, Alexander
T1  - Simulation and measurement of melting effects on metal sheets caused by direct lightning strikes
JF  - 1991 International Aerospace and Ground Conference on Lightning and Static Electricity : proceedings of a conference ... held at Cocoa Beach, Florida, April 16-19, 1991 / NASA
Y1  - 1991
N1  - International Aerospace and Ground Conference on Lightning and Static Electricity <1991, Cocoa Beach, Fla.> ; United States / National Aeronautics and Space Administration
CY  - Washington, DC
ER  - 
TY  - JOUR
A1  - Jildeh, Zaid B.
A1  - Wagner, Torsten
A1  - Schöning, Michael Josef
A1  - Pieper, Martin
T1  - Simulating the electromagnetic‐thermal treatment of thin aluminium layers for adhesion improvement
JF  - Physica status solidi (a)
N2  - A composite layer material used in packaging industry is made from joining layers of different materials using an adhesive. An important processing step in the production of aluminium-containing composites is the surface treatment and consequent coating of adhesive material on the aluminium surface. To increase adhesion strength between aluminium layer and the adhesive material, the foil is heat treated. For efficient heating, induction heating was considered as state-of-the-art treatment process. Due to the complexity of the heating process and the unpredictable nature of the heating source, the control of the process is not yet optimised. In this work, a finite element analysis of the process was established and various process parameters were studied. The process was simplified and modelled in 3D. The numerical model contains an air domain, an aluminium layer and a copper coil fitted with a magnetic field concentrating material. The effect of changing the speed of the aluminium foil (or rolling speed) was studied with the change of the coil current. Statistical analysis was used for generating a general control equation of coil current with changing rolling speed.
Y1  - 2015
U6  - https://doi.org/10.1002/pssa.201431893
SN  - 1862-6319
VL  - Vol. 212
IS  - 6
SP  - 1234
EP  - 1241
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Müller, C.
A1  - Kleine-Hering, H.
T1  - Simple solar systems for heating, hot water and cooking in high altitude regions with high solar radiation / C. Müller ; K. Schwarzer ; H. Kleine-Hering
JF  - Proceedings / organised by: ISES Europe ... [Ed.: Deutsche Gesellschaft für Sonnenenergie e.V. - DGS, Munich ; PSE GmbH - Forschung Entwicklung Marketing, Freiburg]. - Vol 1
Y1  - 2004
SN  - 3-9809656-1-9
N1  - EuroSun <5, 2004, Freiburg, Breisgau> ; Internationales Sonnenforum <14, 2004, Freiburg, Breisgau> ; Deutsche Gesellschaft für Sonnenenergie ; CD-ROM-Ausg.: ISBN 3-9809656-4-3
SP  - 1-653-1-658
PB  - PSE
CY  - Freiburg [Breisgau]
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Zischank, Wolfgang J.
A1  - Heidler, Fridolin
A1  - Wiesinger, J. [u.a.]
T1  - Shielding effectiveness of reinforced concrete cable ducts carrying partial lightning currents
JF  - Conference proceedings : 14th - 18th September 1998, [Burlington Hotel, Birmingham, United Kingdom] / organised by: School of Engineering and Advanced Technology, Staffordshire University, United Kingdom
Y1  - 1998
N1  - International Conference on Lightning Protection <24, 1998, Birmingham> ; School of Engineering and Advanced Technology  ; ICLP <4, 1998, Birmingham>
CY  - Birmingham
ER  - 
TY  - JOUR
A1  - Keller, Johannes
A1  - Rath, Volker
A1  - Bruckmann, Johanna
A1  - Mottaghy, Darius
A1  - Clauser, Christoph
A1  - Wolf, Andreas
A1  - Seidler, Ralf
A1  - Bücker, H. Martin
A1  - Klitzsch, Norbert
T1  - SHEMAT-Suite: An open-source code for simulating flow, heat and species transport in porous media
JF  - SoftwareX
N2  - SHEMAT-Suite is a finite-difference open-source code for simulating coupled flow, heat and species transport in porous media. The code, written in Fortran-95, originates from geoscientific research in the fields of geothermics and hydrogeology. It comprises: (1) a versatile handling of input and output, (2) a modular framework for subsurface parameter modeling, (3) a multi-level OpenMP parallelization, (4) parameter estimation and data assimilation by stochastic approaches (Monte Carlo, Ensemble Kalman filter) and by deterministic Bayesian approaches based on automatic differentiation for calculating exact (truncation error-free) derivatives of the forward code.
Y1  - 2020
U6  - https://doi.org/10.1016/j.softx.2020.100533
SN  - 2352-7110
VL  - 12
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Kordos, P.
A1  - Betko, J.
T1  - Semi-insulating GaAs layers grown by molecular-beam epitaxy /  P. Kordos ; A. Förster ; J. Betko ...
JF  - Applied physics letters. 67 (1995), H. 7
Y1  - 1995
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 983
EP  - 985
ER  - 
TY  - CHAP
A1  - Renault, Philippe
A1  - Butenweg, Christoph
A1  - Mistler, Michael
T1  - Seismic vulnerability assessment system for bridges
T2  - Proceedings of the Tenth International Conference on Civil, Structural and Environmental Engineering Computing : [Rome, Italy, 30. August - 2. September 2005] / ed. by B. H. V. Topping
Y1  - 2005
SN  - 1-905088-00-0
SP  - 1
EP  - 14
PB  - Civil-Comp Press
CY  - Stirling
ER  - 
TY  - CHAP
A1  - Kuhlmann, Wolfram
A1  - Butenweg, Christoph
A1  - Lopez, Marijen
A1  - Fernandez, Sebastian
T1  - Seismic vulnerability assessment of the historic Aachen Cathedral
T2  - Conference proceedings / 13th World Conference on Earthquake Engineering [Vancouver, British Columbia, Canada, August 1 - 6, 2004] / [hosted by CAEE/ACGP, Canadian Association for Earthquake Engineering]
Y1  - 2004
SP  - 1
EP  - 14
PB  - CAEE
CY  - Vancouver
ER  - 
TY  - CHAP
A1  - Churilov, Sergej
A1  - Dumova-Jovanoska, Elena
A1  - Butenweg, Christoph
ED  - Adam, Christoph
ED  - Heuer, Rudolf
ED  - Lenhardt, Wolfgang
ED  - Schranz, Christian
T1  - Seismic verification of existing masonry buildings and strengthening with reinforced concrete jackets
T2  - Proceedings - Vienna Congress on Recent Advances in Earthquake Engineering and Structural Dynamics 2013 (VEESD 2013)
N2  - A methodology for assessment, seismic verification and strengthening of existing masonry buildings is presented in this paper. The verification is performed using a calculation model calibrated with the results from ambient vibration measurements. The calibrated model serves as an input for a deformation-based verification procedure based on the Capacity Spectrum Method (CSM). The bearing capacity of the building is calculated from experimental capacity curves of the individual walls idealized with bilinear elastic-perfectly plastic curves. The experimental capacity curves were obtained from in-plane cyclic loading tests on unreinforced and strengthened masonry walls with reinforced concrete jackets. The seismic action is compared with the load-bearing capacity of the building considering non-linear material behavior with its post-peak capacity. The application of the CSM to masonry buildings and the influence of a traditional strengthening method are demonstrated on the example of a public school building in Skopje, Macedonia.
Y1  - 2013
SN  - 978-3-902749-04-8
N1  - Vienna Congress on Recent Advances in Earthquake Engineering and Structural Dynamics, Vienna, Austria, Paper No. 523
13. D-A-CH Tagung ; Vienna, Austria, 29. - 30. August 2013
http://hdl.handle.net/20.500.12188/15830 (Error - Cannot Connect to Server)
ER  - 
TY  - CHAP
A1  - Tomić, Igor
A1  - Penna, Andrea
A1  - DeJong, Matthew
A1  - Butenweg, Christoph
A1  - Correia, António A.
A1  - Candeias, Paulo X.
A1  - Senaldi, Ilaria
A1  - Guerrini, Gabriele
A1  - Malomo, Daniele
A1  - Beyer, Katrin
T1  - Seismic testing of adjacent interacting masonry structures
T2  - 12th International Conference on Structural Analysis of Historical Constructions (SAHC 2020)
N2  - In many historical centres in Europe, stone masonry buildings are part of building aggregates, which developed when the layout of the city or village was densified. In these aggregates, adjacent buildings share structural walls to support floors and roofs. Meanwhile, the masonry walls of the façades of adjacent buildings are often connected by dry joints since adjacent buildings were constructed at different times. Observations after for example the recent Central Italy earthquakes showed that the dry joints between the building units were often the first elements to be damaged. As a result, the joints opened up leading to pounding between the building units and a complicated interaction at floor and roof beam supports. The analysis of such building aggregates is very challenging and modelling guidelines do not exist. Advances in the development of analysis methods have been impeded by the lack of experimental data on the seismic response of such aggregates. The objective of the project AIMS (Seismic Testing of Adjacent Interacting Masonry Structures), included in the H2020 project SERA, is to provide such experimental data by testing an aggregate of two buildings under two horizontal components of dynamic
excitation. The test unit is built at half-scale, with a two-storey building and a one-storey building. The buildings share one common wall while the façade walls are connected by dry joints. The floors are at different heights leading to a complex dynamic response of this smallest possible building aggregate. The shake table test is conducted at the LNEC seismic testing facility. The testing sequence comprises four levels of shaking: 25%, 50%, 75% and 100% of nominal shaking table capacity. Extensive instrumentation, including accelerometers, displacement transducers and optical measurement systems, provides detailed information on the building aggregate response. Special attention is paid to the interface opening, the globa
KW  - Historical centres
KW  - Stone masonry
KW  - Adjacent buildings
KW  - Shake table test
Y1  - 2020
U6  - https://doi.org/10.23967/sahc.2021.234
N1  - 12th International Conference on Structural Analysis of Historical Constructions (SAHC 2021), September 29-30 and October 1, 2021, online
N1  - (SAHC 2020 ursprünglich geplant für September 2020 in Barelona - verschoben wg. Covid-Pandemie)
SP  - 1
EP  - 12
ER  - 
TY  - CHAP
A1  - Gellert, Christoph
A1  - Park, Jin
A1  - Butenweg, Christoph
T1  - Seismic safety verification of masonry structures
T2  - Proceedings of the Eight International Masonry Conference : held in Dresden from 4th to 7th of July 2010 / [International Masonry Society ; Technische Universität Dresden]. Ed. by: Wolfram Jäger ... Volume 1. (Masonry / International Masonry Society Special Publication ; 11)
Y1  - 2010
SN  - 978-3-00-031381-3
SP  - 813
EP  - 822
PB  - ARGE 8IMC Dresden
CY  - Radebeul
ER  - 
TY  - CHAP
A1  - Cacciatore, Pamela
A1  - Butenweg, Christoph
T1  - Seismic safety of cylindrical granular material steel silos under seismic loading
T2  - Seismic design of industrial facilities 2020
Y1  - 2020
SN  - 978-3-86359-729-0
N1  - 2nd International Conference on Seismic Design of Industrial Facilities (Aachen, Germany, March 4-5, 2020)
SP  - 231
EP  - 244
PB  - Apprimus Verlag
CY  - Aachen
ER  - 
TY  - JOUR
A1  - Mykoniou, Konstantin
A1  - Butenweg, Christoph
A1  - Holtschoppen, Britta
A1  - Klinkel, Sven
T1  - Seismic response analysis of adjacent liquid-storage tanks
JF  - Earthquake engineering and structural dynamics
N2  - A refined substructure technique in the frequency domain is developed, which permits consideration of the interaction effects among adjacent containers through the supporting deformable soil medium. The tank-liquid systems are represented by means of mechanical models, whereas discrete springs and dashpots stand for the soil beneath the foundations. The proposed model is employed to assess the responses of adjacent circular, cylindrical tanks for harmonic and seismic excitations over wide range of tank proportions and soil conditions. The influence of the number, spatial arrangement of the containers and their distance on the overall system's behavior is addressed. The results indicate that the cross-interaction effects can substantially alter the impulsive components of response of each individual element in a tank farm. The degree of this impact is primarily controlled by the tank proportions and the proximity of the predominant natural frequencies of the shell-liquid-soil systems and the input seismic motion. The group effects should be not a priori disregarded, unless the tanks are founded on shallow soil deposit overlying very stiff material or bedrock.
KW  - liquid-structure interaction
KW  - seismic response
KW  - impulsive effects
KW  - liquid-storage tank
KW  - structure-soil-structure interaction
Y1  - 2016
U6  - https://doi.org/10.1002/eqe.2726
SN  - 1096-9845 (E-Journal); 0098-8847 (Print)
VL  - 45
IS  - 11
SP  - 1779
EP  - 1796
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Mistler, Michael
T1  - Seismic resistance of unreinforced masonry buildings
T2  - Proceedings of the Eighth International Conference on Computational Structures Technology : [Las Palmas de Cran Canaria, 12-15 September 2006] / ed. by B. H. V. Topping ...
Y1  - 2006
SN  - 1-905088-06-X
U6  - https://doi.org/10.4203/ccp.83.9
SP  - Paper 9
PB  - Civil-Comp Press
CY  - Stirling
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Marinković, Marko
A1  - Pavese, Alberto
A1  - Lanese, Igor
A1  - Hoffmeister, Benno
A1  - Pinkawa, Marius
A1  - Vulcu, Mihai-Cristian
A1  - Bursi, Oreste
A1  - Nardin, Chiara
A1  - Paolacci, Fabrizio
A1  - Quinci, Gianluca
A1  - Fragiadakis, Michalis
A1  - Weber, Felix
A1  - Huber, Peter
A1  - Renault, Philippe
A1  - Gündel, Max
A1  - Dyke, Shirley
A1  - Ciucci, M.
A1  - Marino, A.
T1  - Seismic performance of multi-component systems in special risk industrial facilities
T2  - Proceedings of the seventeenth world conference on earthquake engineering
N2  - Past earthquakes demonstrated the high vulnerability of industrial facilities equipped with complex process technologies leading to serious damage of the process equipment and multiple and simultaneous release of hazardous substances in industrial facilities. Nevertheless, the design of industrial plants is inadequately described in recent codes and guidelines, as they do not consider the dynamic interaction between the structure and the installations and thus the effect of seismic response of the installations on the response of the structure and vice versa. The current code-based approach for the seismic design of industrial facilities is considered not enough for ensure proper safety conditions against exceptional event entailing loss of content and related consequences. Accordingly, SPIF project (Seismic Performance of Multi- Component Systems in Special Risk Industrial Facilities) was proposed within the framework of the European H2020 - SERA funding scheme (Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe). The objective of the SPIF project is the investigation of the seismic behavior of a representative industrial structure equipped with complex process technology by means of shaking table tests. The test structure is a three-story moment resisting steel frame with vertical and horizontal vessels and cabinets, arranged on the three levels and connected by pipes. The dynamic behavior of the test structure and installations is investigated with and without base isolation. Furthermore, both firmly anchored and isolated components are taken into account to compare their dynamic behavior and interactions with each other. Artificial and synthetic ground motions are applied to study the seismic response at different PGA levels. After each test, dynamic identification measurements are carried out to characterize the system condition. The contribution presents the numerical simulations to calibrate the tests on the prototype, the experimental setup of the investigated structure and installations, selected measurement data and finally describes preliminary experimental results.
KW  - industrial facilities
KW  - piping
KW  - installations
KW  - seismic loading
KW  - earthquakes
Y1  - 2021
N1  - 17. World Conference on Earthquake Engineering, 17WCEE, Sendai, Japan, 2021-09-27 - 2021-10-02
ER  - 
TY  - JOUR
A1  - Butenweg, Christoph
A1  - Bursi, Oreste S.
A1  - Paolacci, Fabrizio
A1  - Marinković, Marko
A1  - Lanese, Igor
A1  - Nardin, Chiara
A1  - Quinci, Gianluca
ED  - Yang, J.
T1  - Seismic performance of an industrial multi-storey frame structure with process equipment subjected to shake table testing
JF  - Engineering Structures
N2  - Past earthquakes demonstrated the high vulnerability of industrial facilities equipped with complex process technologies leading to serious damage of process equipment and multiple and simultaneous release of hazardous substances. Nonetheless, current standards for seismic design of industrial facilities are considered inadequate to guarantee proper safety conditions against exceptional events entailing loss of containment and related consequences. On these premises, the SPIF project -Seismic Performance of Multi-Component Systems in Special Risk Industrial Facilities- was proposed within the framework of the European H2020 SERA funding scheme. In detail, the objective of the SPIF project is the investigation of the seismic behaviour of a representative industrial multi-storey frame structure equipped with complex process components by means of shaking table tests. Along this main vein and in a performance-based design perspective, the issues investigated in depth are the interaction between a primary moment resisting frame (MRF) steel structure and secondary process components that influence the performance of the whole system; and a proper check of floor spectra predictions. The evaluation of experimental data clearly shows a favourable performance of the MRF structure, some weaknesses of local details due to the interaction between floor crossbeams and process components and, finally, the overconservatism of current design standards w.r.t. floor spectra predictions.
KW  - Multi-storey
KW  - Frame structure
KW  - Earthquake
KW  - Tank
KW  - Piping
Y1  - 2021
U6  - https://doi.org/10.1016/j.engstruct.2021.112681
SN  - 0141-0296
VL  - 243
IS  - 15
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Rosin, Julia
A1  - Butenweg, Christoph
T1  - Seismic isolation of cylindrical liquid storage tanks
T2  - Proceedings of the 9th European Conference on Structural Dynamics, EURODYN 2014 Porto, Portugal, 30 June - 2 July 2014 / A. Cunha, E. Caetano, .... (eds.)
Y1  - 2014
SN  - 978-972-752-165-4
SP  - 3145
EP  - 3152
CY  - Porto
ER  - 
TY  - CHAP
A1  - Rosin, Julia
A1  - Kubalski, Thomas
A1  - Butenweg, Christoph
ED  - Klinkel, Sven
ED  - Butenweg, Christoph
ED  - Lin, Gao
ED  - Holtschoppen, Britta
T1  - Seismic isolation of cylindrical liquid storage tanks
T2  - Seismic design of industrial facilities
N2  - Seismic excited liquid filled tanks are subjected to extreme loading due to hydrodynamic pressures, which can lead to nonlinear stability failure of the thinwalled cylindrical tanks, as it is known from past earthquakes. A significant reduction of the seismically induced loads can be obtained by the application of base isolation systems, which have to be designed carefully with respect to the modified hydrodynamic behaviour of the tank in interaction with the liquid. For this reason a highly sophisticated fluid-structure interaction model has to be applied for a realistic simulation of the overall dynamic system. In the following, such a model is presented and compared with the results of simplified mathematical models for rigidly supported tanks. Finally, it is examined to what extent a simple mechanical model can represent the behaviour of a base isolated tank in case of seismic excitation
Y1  - 2013
SN  - 978-3-658-02810-7
SN  - 978-3-658-02809-1
SN  - 978-3-658-14037-3
U6  - https://doi.org/10.1007/978-3-658-02810-7_36
N1  - International Conference on Seismic Design of Industrial Facilities, Aachen, Germany, 26.-27.09.2013.
https://sedif-conference.jimdofree.com/
SP  - 429
EP  - 440
PB  - Springer Vieweg
CY  - Wiesbaden
ER  - 
TY  - CHAP
A1  - Schmitt, Timo
A1  - Rosin, Julia
A1  - Butenweg, Christoph
T1  - Seismic Impact And Design Of Buried Pipelines
T2  - 16th European Conference on Earthquake Engineering, Thessaloniki, 18-21 June, 2018
N2  - Seismic design of buried pipeline systems for energy and water supply is not only important for plant and operational safety but also for the maintenance of the supply infrastructure after an earthquake. The present paper shows special issues of the seismic wave impacts on buried pipelines, describes calculation methods, proposes approaches and gives calculation examples. This paper regards the effects of transient displacement differences and resulting tensions within the pipeline due to the wave propagation of the earthquake. However, the presented model can also be used to calculate fault rupture induced displacements. Based on a three-dimensional Finite Element Model parameter studies are performed to show the influence of several parameters such as incoming wave angle, wave velocity, backfill height and synthetic displacement time histories. The interaction between the pipeline and the surrounding soil is modeled with non-linear soil springs and the propagating wave is simulated affecting the pipeline punctually, independently in time and space. Special attention is given to long-distance heat pipeline systems. Here, in regular distances expansion bends are arranged to ensure movements of the pipeline due to high temperature. Such expansion bends are usually designed with small bending radii, which during the earthquake lead to high bending stresses in the cross-section of the pipeline. Finally, an interpretation of the results and recommendations are given for the most critical parameters.
Y1  - 2018
N1  - Paper No 10600
SP  - 1
EP  - 12
ER  - 
TY  - RPRT
A1  - Butenweg, Christoph
A1  - Kaiser, Diethelm
T1  - Seismic hazard harmonisation in Europe (SHARE) : DGEB-Workshop in Frankfurt a.M., Germany, 27. May 2014 / Christoph Butenweg, Diethelm Kaiser (editors)
Y1  - 2014
SN  - 3-930108-12-7
PB  - DGEB
CY  - Aachen
ER  -