TY - JOUR A1 - Rateike, Franz-Matthias A1 - Weyer, K. G. A1 - Wiedenmann, H. A1 - MacGillivray, W. R. T1 - Observation of absorptive optical bistability in a fabry-perot cavity containing multiple atomic beams / K. G. Weyer ; H. Wiedenmann ; M. Rateike ; W. R. Mac Gillivray ; P. Meystre ; H. Walther JF - Optics communications. 37 (1981), H. 6 Y1 - 1981 SN - 0030-4018 SP - 426 EP - 430 ER - TY - JOUR A1 - Helsper, Christoph A1 - Horn, Hans-Georg A1 - Schneider, Friedhelm A1 - Wehner, Birgit T1 - Intercomparison of five mobility size spectrometers for measuring atmospheric submicrometer aerosol particles / Helsper, Christoph ; Horn, Hans-Georg ; Schneider, Friedhelm ; Wehner, Birgit ; Wiedensohler, Alfred JF - Gefahrstoffe, Reinhaltung der Luft. Air Quality Control. 68 (2008), H. 11-12 Y1 - 2008 SN - 0949-8036 SP - 475 EP - 481 ER - TY - JOUR A1 - Förster, Arnold A1 - Belyaev, A. E. A1 - Vitusevich, S.A. A1 - Eaves, L. T1 - Photoresponse spectra in p-i-n diodes containing quantum dots. Belyaev, A.E.; Vitusevich, S.A.; Eaves, L.; Main, P.C.; Henini, M.; Förster, A.; Reetz, W.; Danylyuk, S.V. JF - Nanotechnology. 13 (2002), H. 1 Y1 - 2002 SP - 94 EP - 96 ER - TY - JOUR A1 - Förster, Arnold A1 - Kicin, S A1 - Cambel, V. A1 - Kuliffayova, M. T1 - Fabrication of GaAs symmetric pyramidal mesas prepared by wet-chemical etching using AlAs interlayer. Kicin, S.; Cambel, V.; Kuliffayova, M.; Gregusova, D.; Kovacova, E.; Novak, J.; Kostic, I.; Forster, A. JF - Journal of Applied Physics. 91 (2002), H. 2 Y1 - 2002 SN - 1089-7550 SP - 878 EP - 880 ER - TY - JOUR A1 - Förster, Arnold A1 - Cambel, V. A1 - Kicin, S. A1 - Kuliffayová, M. T1 - Preparation of patterned GaAs structures for MEMS and MOEMS. Cambel, V.; Kicin, S.; Kuliffayová, M.; Kovácová, E.; Novák, J.; Kostic, I.; Förster, A. JF - Materials Science and Engineering: C. 19 (2002), H. 2 Y1 - 2002 SN - 0928-4931 SP - 161 EP - 165 ER - TY - JOUR A1 - Förster, Arnold A1 - Malindretos, Jörg A1 - Indlekofer, Klaus Michael A1 - Lepsa, Mihail Ion T1 - Homogeneity analysis of ion-implanted resonant tunnelling diodes for applications in digital logic circuits. Malindretos, Jörg; Förster, Arno; Indlekofer, Klaus Michael; Lepsa, Mihail Ion; Hardtdegen, Hilde; Schmidt, Roland; Luth, Hans JF - Superlattices and Microstructures. 31 (2002), H. 6 Y1 - 2002 SN - 0749-6036 SP - 315 EP - 325 ER - TY - JOUR A1 - Förster, Arnold A1 - Darmo, J. A1 - Schafer, F. A1 - Kordos, P. T1 - Thermal resistance of the semiconductor structures for a photomixing device. Darmo, J.; Schafer, F.; Forster, A.; Kordos, P.; Gusten, R JF - Conference proceedings : Smolenice Castle, Slovakia, October 14 - 16, 2002 / [organizers: Microelectronics Department, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Bratislava]. Ed. by Juraj Breza Y1 - 2002 SN - 0-7803-7276-X N1 - International Conference on Advanced Semiconductor Devices and Microsystems ; (4, 2002, Smolenice). ASDAM '02 ; (4 : ; 2002.10.14-16 : ; Smolenice) SP - 87 EP - 90 PB - IEEE Operations Center CY - Piscataway, NJ ER - TY - JOUR A1 - Förster, Arnold A1 - Mikulics, M. A1 - Siebe, F. A1 - Fox, A. T1 - Generation of 460 GHz radiation by photomixing in low-temperature-grown MBE GaAs. Mikulics, M.; Siebe, F.; Fox, A.; Marso, M.; Forster, A.; Stuer, H.; Schafer, F.; Gusten, R.; Kordos, P. JF - Conference proceedings : Smolenice Castle, Slovakia, October 14 - 16, 2002 / [organizers: Microelectronics Department, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Bratislava]. Ed. by Juraj Breza Y1 - 2002 SN - 0-7803-7276-X N1 - International Conference on Advanced Semiconductor Devices and Microsystems ; (4, 2002, Smolenice). ASDAM '02 ; (4 : ; 2002.10.14-16 : ; Smolenice) SP - 129 EP - 132 PB - IEEE Operations Center CY - Piscataway, NJ ER - TY - JOUR A1 - Förster, Arnold A1 - Vitusevich, S. A. A1 - Belyaev, A. E. A1 - Sheka, D. I. T1 - Resonant tunneling effect in a periodically modulated electrical field. Vitusevich, S.A.; Forster, A.; Belyaev, A.E.; Sheka, D.I.; Luth, H.; Klein, N.; Danylyuk, S.V.; Konakova, R. JF - Proceedings of the Tenth International Conference on Modulated Semiconductor Structures : held at the Johannes Kepler University, Linz, Austria, July 23 - 27, 2001 / MSS 10. Guest ed.: Günther Bauer ... Y1 - 2002 N1 - International Conference on Modulated Semiconductor Structures ; (10, 2001, Linz). Zugleich: Physica E: Low-dimensional Systems and Nanostructures. 13(2002)2-4. ISSN 1386-9477 SP - 811 EP - 813 PB - Elsevier CY - Amsterdam [u.a.] ER - TY - JOUR A1 - Förster, Arnold A1 - Adam, R. A1 - Mikulics, M. A1 - Schelten, J. T1 - Fabrication and subpicosecond optical response of low-temperature-grown GaAs freestanding photoconductive devices. Adam, R.; Mikulics, M.; Forster, A.; Schelten, J.; Siegel, M.; Kordos, P.; Zheng, X.; Wu, S.; Sobolewski, R. JF - Applied Physics Letters. 81 (2002), H. 18 Y1 - 2002 SN - 1077-3118 SP - 3485 EP - 3487 ER - TY - JOUR A1 - Förster, Arnold A1 - Mikulics, M. A1 - Marso, M. A1 - Adam, R. T1 - Low-temperature-grown MBE GaAs for terahertz photomixers. Mikulics, M.; Marso, M.; Adam, R.; Fox, A.; Buca, D.; Förster, A.; Kordos, P.; Xu, Y.; Sobolewski, R. JF - 2001 Symposium on Electron Devices for Microwave and Optoelectronic Applications ; [Vienna University of Technology, Institute of Electrical Measurements and Circuit Design, 15 - 16 November 2001, Vienna, Austria ; proceedings] / EDMO 2001. Organised by: Institute of Electrical Measurements and Circuit Design, Vienna University of Technology, Austria. With technical co-sponsorship from IEEE Electron Devices Society Y1 - 2001 SN - 078037049X N1 - IEEE catalog number: 01TH8567 SP - 155 EP - 155 PB - IEEE Operations Center CY - Piscataway, NJ ER - TY - JOUR A1 - Krafft, B. A1 - Förster, Arnold A1 - Hart, A. van der A1 - Schäpers, T. T1 - Control of Aharonov-Bohm oscillations in a AlGaAs/GaAs ring by asymmetric and symmetric gate biasing JF - Physica E: Low-dimensional Systems and Nanostructures. 9 (2001), H. 4 Y1 - 2001 SN - 1386-9477 SP - 635 EP - 641 ER - TY - JOUR A1 - Förster, Arnold A1 - Marso, M. A1 - Gersdorf, P. A1 - Fox, A. T1 - An InAlAs-InGaAs OPFET with responsivity above 200 A/W at 1.3-μm wavelength. Marso, M.; Gersdorf, P.; Fox, A.; Hodel, U.; Lambertini, R.; Kordos, P. JF - IEEE Photonics Technology Letters. 11 (1999), H. 1 Y1 - 1999 SN - 1041-1135 SP - 117 EP - 119 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 - Vitusevich, S. A. A1 - Belyaev, A. E. T1 - Optically controlled 2D tunneling in GaAs delta-doped p-n junction / S. A. Vitusevich ; A. Förster ; A. E. Belyaev ... JF - Semiconductor Physics, Quantum Electronics & Optoelectronics (SQO) : International Scientific Journal. 2 (1999), H. 1 Y1 - 1999 SN - 1605-6582 SP - 7 EP - 10 ER - TY - JOUR A1 - Förster, Arnold A1 - Vitusevich, S. A. A1 - Belyaev, B. A. T1 - Intrinsic bistability effect in delta doped tunneling diodes / S. A. Vitusevich ; A. Förster ; B. A. Belyaev ... JF - Proceedings of the XXVIII International School on Physics of Semiconducting Compounds : Jaszowiec, Poland, June 6 - 11, 1999 / Polish Academy of Sciences, Institute of Physics. Ed. of the proceedings Wojciech Szuszkiewicz Y1 - 1999 N1 - International School on Physics of Semiconducting Compounds <28, 1999, Jaszowiec> ; Acta physica Polonica : A ; 96, no. 5 CY - Warsaw ER - TY - JOUR A1 - Förster, Arnold A1 - Lachenmann, S. G. A1 - Friedrich, I. A1 - Uhlisch, D. T1 - Superconductor/semiconductor step junctions: the basic element for hybrid three terminal devices. Lachenmann, S. G., Förster, A.; Friedrich, I.; Uhlisch, D.; Schäpers, Th.; Kastalsky, A.; Golubov, A. A. JF - Applied Superconductivity. 6 (1999), H. 10-12 Y1 - 1999 SN - 0964-1807 SP - 681 EP - 688 ER - TY - JOUR A1 - Förster, Arnold A1 - Vitusevich, S. A. A1 - Belyaev, A. E. A1 - Indlekofer, K. M. T1 - Resonant tunneling effect in delta p-n GaAs junction. Vitusevich, S. A.; Förster, A.; Belyaev, A. E.; Indlekofer, K. M.; Lüth, H.; Konakova, R. V. JF - Microelectronic Engineering. 46 (1999), H. 1-4 Y1 - 1999 SN - 0167-9317 N1 - International Conference on Micro- and Nanofabrication SP - 169 EP - 172 ER - TY - BOOK A1 - Schwarzer, Klemens T1 - Lacasa : Einsatz von MATLAB-Simulink zur energetischen Analyse und Optimierung von Alt- und Neubauten inklusive Heizungs-, Lüftungs- und Klimatechnik / Hrsg.: FIA-Projekt, Forschungs-Informations-Austausch im Fachinstitut Gebäude-Klima e.V. Projekt: Solar-Institut Jülich an der Fachhochschule Aachen Y1 - 2004 SN - 3-938210-07-9 PB - FIA-Projekt im Fachinst. Gebäude-Klima CY - Bietigheim-Bissingen 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 - Breitbach, Gerd A1 - Schubert, F. T1 - A contribution to stress prediction in coatings for gas turbine blades JF - Archive of applied mechanics. 73 (2004), H. 9-10 Y1 - 2004 SN - 0939-1533 N1 - 2. ISSN (Druck-Ausg.): 1432-0681 SP - 682 EP - 689 ER - TY - JOUR A1 - Breitbach, Gerd A1 - Schmidt-Plutka, A. A1 - Schubert, F. A1 - Nickel, H. T1 - Deformation behaviour of structures exposed at very high temperatures to cyclic thermal and mechanical loadings JF - Structural mechanics in reactor technology : transactions of the 12th International Conference on Structural Mechanics in Reactor Technology, Stuttgart, Germany, 15-20 August 1993 / ed. Karl F. Kussmaul. - Bd. L : Inelastic behaviour of solids and structures Y1 - 1993 SN - 0-444-81515-5 N1 - SMiRT <12, 1993, Stuttgart> ; L08/3 SP - 203 EP - 208 PB - Elsevier CY - Amsterdam [u.a.] ER - TY - JOUR A1 - Breitbach, Gerd A1 - Deschka, S. A1 - Akiba, M. T1 - High heat flux tests on brazed divertor components in electron and ion beam test facilities / S. Deschka ; M. Akiba ; G. Breitbach ... JF - International journal of refractory metals and hard materials. 11 (1992), H. 6 Y1 - 1992 SN - 0263-4368 N1 - 2. ISSN (Druck-Ausg.): 0263-4368 SP - 367 EP - 375 ER - TY - JOUR A1 - Breitbach, Gerd A1 - Wolf, U. A1 - Deschka, S. A1 - Nickel, H. T1 - Thermomechanical analysis of an actively cooled divertor mock up JF - Tagungsbericht : Jahrestagung Kerntechnik : Stadthalle Karlsruhe, 5.-7. Mai 1992, Karlsruhe = Proceedings / Kerntechnische Gesellschaft ... [Red.: Karl G. Bauer]. - 1. Aufl., als Ms. gedr.. Y1 - 1992 N1 - Jahrestagung Kerntechnik <1992, Karlsruhe> SP - 457 EP - 461 PB - INFOFORUM CY - Bonn ER - TY - JOUR A1 - Hardt, Arno A1 - Bisplinghoff, J. A1 - Ernst, J. A1 - Löhr, R. T1 - On-line apparatus BANDIT for half-life determination of short-lived neutron deficient isotopes. A. Hardt, J. Bisplinghoff, J. Ernst, R. Löhr, H. Machner, T . Mayer-Kuckuk JF - Nuclear Instruments and Methods. 143 (1977), H. 3 Y1 - 1977 SN - 0029-554X SP - 519 EP - 523 ER - TY - JOUR A1 - Hardt, Arno A1 - Köhler, M. A1 - Müller, K. D. A1 - Stoff, H. T1 - A two-dimensional position sensitive charged-particle detector for the magnetic spectrograph "BIG KARL" of the Jülich Cyclotron "JULIC". M. Köhler, K. D. Müller, H. Stoff, M. Teske, G. P. A. Berg, A. Hardt, S. Martin, C. Mayer-Böricke , J. Meißburger JF - Nuclear Instruments and Methods. 75 (1980), H. 2-3 Y1 - 1980 SN - 0029-554X SP - 357 EP - 362 ER - TY - CHAP A1 - Hardt, Arno A1 - Abdel-Gawad, A A1 - Martin, S. A1 - Reich, J. T1 - Design procedures for the Juelich QQDDQ high resolution spectrometer T2 - Proceedings, 5th International Conference on Magnet Technology (MT-5) : Rome, Italy, April 21-25, 1975 Y1 - 1975 SP - 45 EP - 51 ER - TY - JOUR A1 - Mohnke, Andreas T1 - High-rate sputtering of zinc oxide with a funnel-shaped magnetic field: Effect of the target thickness on the layer properties JF - Vakuum-Technik. 36 (1987), H. 5 Y1 - 1987 SN - 0042-2266 N1 - unter 63 ZS 073-1986/87 in der Bibliothek Jülich vorhanden SP - 148 EP - 151 ER - TY - BOOK A1 - Breitbach, Gerd T1 - Proceedings of the Workshop on Structural Design Criteria for HTR : Jülich, 31. January - 1. February 1989 / ed.: G. Breitbach ... - Als Ms. gedr. Y1 - 1989 N1 - (Berichte der Kernforschungsanlage Jülich : Jül-Conf. ; 71) ; Workshop on Structural Design Criteria for HTR <1989, Jülich> PB - Zentralbibliothek d. Kernforschungsanlage CY - Jülich ER - TY - JOUR A1 - Kern, Alexander A1 - Heidler, F. A1 - Zischank, W. T1 - Induced overvoltages in cable ducts taking into account the current flow into earth / F. Heidler ; W. Zischank ... A. Kern ... 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 - Fischer, W. A. A1 - Dören, Horst-Peter A1 - Janke, Dieter T1 - Aluminium nitride probes for application in iron melts JF - Archiv für das Eisenhüttenwesen. 52 (1981), H. 3 Y1 - 1981 SN - 0003-8962 SP - 91 EP - 98 ER - TY - CHAP A1 - Hartung, I. A1 - Dilger, Klaus A1 - Hellmanns, Mark A1 - Böhme, Stefan T1 - Repair of non-weldable steel structures to extend the life cycle T2 - Proceedings of the IIW International Conference on Advances in Welding and Allied Technologies : July 16 - 17, 2009, Singapore. (Welding in the world ; 53.2009, special issue) Y1 - 2009 SN - 978-981-08-3259-9 SP - 569 EP - 574 PB - Springer CY - Berlin [u.a.] ER - TY - CHAP A1 - Hellmanns, Mark A1 - Böhm, Stefan A1 - Dilger, Klaus T1 - Weight and noise reduction in power transmissions through epoxy resin foams T2 - Proceedings of the 31st annual meeting of the Adhesion Society : 17. - 20.2.2008, Austin, Texas Y1 - 2008 SP - 291 EP - 293 PB - Adhesion Society CY - Blacksburg ER - TY - CHAP A1 - Hellmanns, Mark A1 - Böhm, Stefan A1 - Dilger, Klaus T1 - Implementation of a velocity controlled manual applicator for adhesives and sealants in the automotive industry in consideration of quality control T2 - Proceedings of the 29th annual meeting of the Adhesion Society : 19. - 22.2.2006, Jacksonville, Florida Y1 - 2006 SN - 1086-9506 SP - 68 EP - 70 PB - Adhesion Society CY - Blacksburg, Va. ER - TY - JOUR A1 - Hellmanns, Mark A1 - Böhm, Stefan A1 - Dilger, Klaus T1 - Manual applications of adhesives JF - Journal of adhesion and interface Y1 - 2006 VL - Vol. 7 IS - No. 4 SP - 24 EP - 27 ER - TY - CHAP A1 - Hellmanns, Mark A1 - Böhm, Stefan A1 - Dilger, Klaus T1 - Progress of the manual application of adhesives T2 - Proceedings of the 3rd World Congress on Adhesion and Related Phenomena : WCARP-III, October 15 -18, 2006, Beijing, China Y1 - 2006 SP - 275 EP - 277 PB - Beijing Adhesion Society of China CY - Beijing ER - TY - CHAP A1 - Böhm, Stefan A1 - Hellmanns, Mark A1 - Backes, Andreas A1 - Dilger, Klaus T1 - Lock-in thermography based NDT of automotive parts T2 - Proceedings of the 3rd World Congress on Adhesion and Related Phenomena : WCARP-III, October 15 -18, 2006, Beijing, China Y1 - 2006 SP - 382 EP - 384 PB - Beijing Adhesion Society of China CY - Beijing ER - TY - JOUR A1 - Böhm, Stefan A1 - Hellmanns, Mark A1 - Backes, Andreas A1 - Dilger, Klaus T1 - Lock-in thermography based NDT of parts for the automotive industry JF - Journal of adhesion and interface Y1 - 2006 VL - Vol. 7 IS - No. 4 SP - 10 EP - 12 ER - TY - CHAP A1 - Hellmanns, Mark A1 - Hartung, I. A1 - Dilger, Klaus A1 - Böhm, Stefan T1 - Quality assurance of manual guided joining and welding devices T2 - Proceedings of the IIW International Conference on Advances in Welding and Allied Technologies : July 16 - 17, 2009, Singapore Y1 - 2009 SN - 9789810832605 SP - 219 EP - 222 PB - International Institute of Welding CY - Roissy ER - TY - CHAP A1 - Stollenwerk, Dominik A1 - Kuvarakul, T. A1 - Kuperjans, Isabel T1 - Renewable energy supply for power dominated, energy intense production processes - a systematic conversion approach for the anodizing process T2 - IOP conference series: Earth and environmental science (EES) Y1 - 2013 SN - 1755-1315 SN - 1755-1307 VL - Vol. 16 IS - H. 1 SP - 012142/1 EP - 012142/4 ER - TY - JOUR A1 - Sabitova, A. A1 - Ebert, Ph. A1 - Lenz, A. A1 - Schaafhausen, S. A1 - Ivanova, L. A1 - Dähne, M. A1 - Hoffmann, A. A1 - Dunin-Borkowski, R. E. A1 - Förster, Arnold A1 - Grandidier, B. A1 - Eisele, H. T1 - Intrinsic bandgap of cleaved ZnO(112¯0) surfaces JF - Applied physics letters Y1 - 2013 SN - 1077-3118 (E-Journal); 0003-6951 (Print) VL - Vol. 102 SP - 021608 ER - TY - CHAP A1 - Takenaga, Shoko A1 - Herrera, Cony F. A1 - Werner, Frederik A1 - Biselli, Manfred A1 - Schnitzler, Thomas A1 - Schöning, Michael Josef A1 - Öhlschläger, Peter A1 - Wagner, Torsten T1 - Detection of the metabolic activity of cells by differential measurements based on a single light-addressable potentiometric sensor chip T2 - 11. Dresdner Sensor-Symposium : 9.-11.12.2013 Y1 - 2013 SN - 978-3-9813484-5-3 SP - 63 EP - 67 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 - Alebouyeh Samami, Behzad A1 - Pieper, Martin A1 - Breitbach, Gerd A1 - Hodapp, Josef T1 - Heat production in the windings of the stators of electric machines under stationary condition JF - Heat and mass transfer N2 - In electric machines due to high currents and resistive losses (joule heating) heat is produced. To avoid damages by overheating the design of effective cooling systems is required. Therefore the knowledge of heat sources and heat transfer processes is necessary. The purpose of this paper is to illustrate a good and effective calculation method for the temperature analysis based on homogenization techniques. These methods have been applied for the stator windings in a slot of an electric machine consisting of copper wires and resin. The key quantity here is an effective thermal conductivity, which characterizes the heterogeneous wire resin-arrangement inside the stator slot. To illustrate the applicability of the method, the analysis of a simplified, homogenized model is compared with the detailed analysis of temperature behavior inside a slot of an electric machine according to the heat generation. We considered here only the stationary situation. The achieved numerical results are accurate and show that the applied homogenization technique works in practice. Finally the results of simulations for the two cases, the original model of the slot and the homogenized model chosen for the slot (unit cell), are compared to experimental results. Y1 - 2014 U6 - https://doi.org/10.1007/s00231-014-1371-8 SN - 0947-7411 (Print) ; 1432-1181 (E-Journal) VL - 50 SP - 1707 EP - 1716 PB - Springer CY - Heidelberg 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 - CHAP A1 - Mottaghy, Darius A1 - Majorowicz, Jacek A1 - Rath, Volker T1 - Ground Surface Temperature Histories Reconstructed from Boreholes in Poland: Implications for Spatial Variability T2 - The Polish Climate in the European Context: An Historical Overview Y1 - 2009 SN - 978-90-481-3167-9 U6 - https://doi.org/10.1007/978-90-481-3167-9_17 SP - 375 EP - 387 PB - Springer Science+Business Media CY - Dordrecht ER - TY - JOUR A1 - Mottaghy, Darius A1 - Pechnig, Renate A1 - Vogt, Christian T1 - The geothermal project Den Haag: 3D numerical models for temperature prediction and reservoir simulation JF - Geothermics N2 - The proposed Den Haag Zuidwest district heating system of the city of The Hague consists of a deep doublet in a Jurassic sandstone layer that is designed for a production temperature of 75 °C and a reinjection temperature of 40 °C at a flow rate of 150 m3 h−1. The prediction of reservoir temperature and production behavior is crucial for success of the proposed geothermal doublet. This work presents the results of a study of the important geothermal and geohydrological issues for the doublet design. In the first phase of the study, the influences of the three-dimensional (3D) structures of anticlines and synclines on the temperature field were examined. A comprehensive petrophysical investigation was performed to build a large scale 3D-model of the reservoir. Several bottomhole temperatures (BHTs), as well as petrophysical logs were used to calibrate the model using thermal conductivity measurements on 50 samples from boreholes in different lithological units in the study area. Profiles and cross sections extracted from the calculated temperature field were used to study the temperature in the surrounding areas of the planned doublet. In the second phase of the project, a detailed 3D numerical reservoir model was set up, with the aim of predicting the evolution of the producer and injector temperatures, and the extent of the cooled area around the injector. The temperature model from the first phase provided the boundary conditions for the reservoir model. Hydraulic parameters for the target horizons, such as porosity and permeability, were taken from data available from the nearby exploration wells. The simulation results are encouraging as no significant thermal breakthrough is predicted. For the originally planned location of the producer, the extracted water temperature is predicted to be around 79 °C, with an almost negligible cooling in the first 50 years of production. When the producer is located shallower parts of the reservoir, the yield water temperatures is lower, starting at ≈76 °C and decreasing to ≈74 °C after 50 years of operation. This comparatively larger decrease in temperature with time is caused by the structural feature of the reservoir, namely a higher dip causes the cooler water to easily move downward. In view of the poor reservoir data, the reservoir simulation model is constructed to allow iterative updates using data assimilation during planned drilling, testing, and production phases. Measurements during an 8 h pumping test carried out in late 2010 suggest that a flow rate of 150 m3 h−1 is achievable. Fluid temperatures of 76.5 °C were measured, which is very close to the predicted value. Y1 - 2011 U6 - https://doi.org/10.1016/j.geothermics.2011.07.001 SN - 0375-6505 VL - 40 IS - 3 SP - 199 EP - 210 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Mottaghy, Darius A1 - Schwamborn, G. A1 - Rath, V. T1 - Past climate changes and permafrost depth at the Lake El'gygytgyn site: implications from data and thermal modeling JF - Climate of the Past Y1 - 2013 U6 - https://doi.org/10.5194/cp-9-119-2013 SN - 1814-9332 VL - 9 IS - 1 SP - 119 EP - 133 PB - Copernicus CY - Katlenburg-Lindau ER - TY - JOUR A1 - Vogt, Christian A1 - Iwanowski-Strahser, Katha A1 - Marquart, Gabriele A1 - Arnold, Juliane A1 - Mottaghy, Darius A1 - Pechnig, Renate A1 - Gnjezda, Daniel A1 - Clauser, Christoph T1 - Modeling contribution to risk assessment of thermal production power for geothermal reservoirs JF - Renewable Energy Y1 - 2013 U6 - https://doi.org/10.1016/j.renene.2012.11.026 SN - 0960-1481 VL - 53 SP - 230 EP - 241 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Ziegler, M. A1 - Schüller, R. A1 - Mottaghy, Darius T1 - Numerical simulation of energy consumption of artificial ground freezing applications subject to water seepage T1 - Simulation numérique de la consummation d´énergie des applications pour la congélation artificielle du sol soumise au flux de l´eau souterraine T2 - Proceedings of the 18th International Conference on Soil Mechanics and Geotechnical Engineering, Paris 2013 Y1 - 2013 SP - 2985 EP - 2988 ER - TY - JOUR A1 - Mottaghy, Darius A1 - Schellschmidt, R. A1 - Popov, Y. A. A1 - Clauser, C. A1 - Kukkonen, I. T. A1 - Nover, G. A1 - Milanovsky, S. A1 - Romushkevich, R. A. T1 - New heat flow data from the immediate vicinity of the Kola super-deep borehole: Vertical variation in heat flow density confirmed and attributed to advection JF - Tectonophysics Y1 - 2005 U6 - https://doi.org/10.1016/j.tecto.2005.03.005 SN - 1879-3266 VL - 401 IS - 1-2 SP - 119 EP - 142 ER - TY - JOUR A1 - Mottaghy, Darius A1 - Rath, Volker T1 - Latent heat effects in subsurface heat transport modelling and their impact on palaeotemperature reconstructions JF - Geophysical Journal International Y1 - 2006 U6 - https://doi.org/10.1111/j.1365-246X.2005.02843.x SN - 1365-246X VL - 164 IS - 1 SP - 236 EP - 245 ER - TY - JOUR A1 - Vogt, C. A1 - Mottaghy, Darius A1 - Wolf, A. A1 - Rath, V. A1 - Pechnig, R. A1 - Clauser, C. T1 - Reducing temperature uncertainties by stochastic geothermal reservoir modelling JF - Geophysical Journal International N2 - Quantifying and minimizing uncertainty is vital for simulating technically and economically successful geothermal reservoirs. To this end, we apply a stochastic modelling sequence, a Monte Carlo study, based on (i) creating an ensemble of possible realizations of a reservoir model, (ii) forward simulation of fluid flow and heat transport, and (iii) constraining post-processing using observed state variables. To generate the ensemble, we use the stochastic algorithm of Sequential Gaussian Simulation and test its potential fitting rock properties, such as thermal conductivity and permeability, of a synthetic reference model and—performing a corresponding forward simulation—state variables such as temperature. The ensemble yields probability distributions of rock properties and state variables at any location inside the reservoir. In addition, we perform a constraining post-processing in order to minimize the uncertainty of the obtained distributions by conditioning the ensemble to observed state variables, in this case temperature. This constraining post-processing works particularly well on systems dominated by fluid flow. The stochastic modelling sequence is applied to a large, steady-state 3-D heat flow model of a reservoir in The Hague, Netherlands. The spatial thermal conductivity distribution is simulated stochastically based on available logging data. Errors of bottom-hole temperatures provide thresholds for the constraining technique performed afterwards. This reduce the temperature uncertainty for the proposed target location significantly from 25 to 12 K (full distribution width) in a depth of 2300 m. Assuming a Gaussian shape of the temperature distribution, the standard deviation is 1.8 K. To allow a more comprehensive approach to quantify uncertainty, we also implement the stochastic simulation of boundary conditions and demonstrate this for the basal specific heat flow in the reservoir of The Hague. As expected, this results in a larger distribution width and hence, a larger, but more realistic uncertainty estimate. However, applying the constraining post-processing the uncertainty is again reduced to the level of the post-processing without stochastic boundary simulation. Thus, constraining post-processing is a suitable tool for reducing uncertainty estimates by observed state variables. Y1 - 2010 U6 - https://doi.org/10.1111/j.1365-246X.2009.04498.x SN - 1365-246X VL - 181 IS - 1 SP - 321 EP - 333 PB - Oxford University Press CY - Oxford 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 - Mottaghy, Darius A1 - Vosteen, Hans-Dieter A1 - Schellschmidt, Rüdiger T1 - Temperature dependence of the relationship of thermal diffusivity versus thermal conductivity for crystalline rocks JF - International Journal of Earth Sciences Y1 - 2008 U6 - https://doi.org/10.1007/s00531-007-0238-3 SN - 1437-3262 VL - 97 IS - 2 SP - 435 EP - 442 ER - TY - JOUR A1 - Vogt, C. A1 - Mottaghy, Darius A1 - Rath, V. A1 - Marquart, G. A1 - Dijkshoorn, L. A1 - Wolf, A. A1 - Clauser, C. T1 - Vertical variation in heat flow on the Kola Peninsula: palaeoclimate or fluid flow? JF - Geophysical Journal International N2 - Following earlier studies, we present forward and inverse simulations of heat and fluid transport of the upper crust using a local 3-D model of the Kola area. We provide best estimates for palaeotemperatures and permeabilities, their errors and their dependencies. Our results allow discriminating between the two mentioned processes to a certain extent, partly resolving the non-uniqueness of the problem. We find clear indications for a significant contribution of advective heat transport, which, in turn, imply only slightly lower ground surface temperatures during the last glacial maximum relative to the present value. These findings are consistent with the general background knowledge of (i) the fracture zones and the corresponding fluid movements in the bedrock and (ii) the glacial history of the Kola area. Y1 - 2014 U6 - https://doi.org/10.1093/gji/ggu282 SN - 1365-246X VL - 199 IS - 2 SP - 829 EP - 843 PB - Oxford University Press CY - Oxford ER - TY - JOUR A1 - Chen, Tao A1 - Clauser, Christoph A1 - Marquart, Gabriele A1 - Willbrand, Karen A1 - Mottaghy, Darius T1 - A new upscaling method for fractured porous media JF - Advances in Water Resources Y1 - 2015 U6 - https://doi.org/10.1016/j.advwatres.2015.03.009 SN - 0309-1708 N1 - Corrigendum 2019: https://doi.org/10.1016/j.advwatres.2019.01.004 VL - 80 SP - 60 EP - 68 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Kürten, Sylvia A1 - Mottaghy, Darius A1 - Ziegler, Martin T1 - A new model for the description of the heat transfer for plane thermo-active geotechnical systems based on thermal resistances JF - Acta Geotechnica Y1 - 2015 U6 - https://doi.org/10.1007/s11440-014-0311-6 SN - 1861-1133 VL - 10 IS - 2 SP - 219 EP - 229 PB - Springer CY - Berlin ER - TY - JOUR A1 - Kürten, Sylvia A1 - Mottaghy, Darius A1 - Ziegler, Martin T1 - Design of plane energy geostructures based on laboratory tests and numerical modelling JF - Energy and Buildings Y1 - 2015 U6 - https://doi.org/10.1016/j.enbuild.2015.08.039 SN - 0378-7788 VL - 107 SP - 434 EP - 444 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Tewari, Udit A1 - Neshvad, Surena A1 - Goldbach, Daniel A1 - Sachau, Jürgen T1 - Verification and Implementation of Pseudo-Random-Binary-Sequences for Online Determination of Grid Impedance Spectrum T2 - International Conference on Renewable Energies and Power Quality (ICREPQ´15), La Conuna, Spain, 25th to 27th March, 2015 Y1 - 2015 ER - TY - CHAP A1 - Srivastava, Alok A1 - Knolle, Friedhart A1 - Hoyler, Friedrich A1 - Scherer, Ulrich W. A1 - Schnug, Ewald T1 - Uranium Toxicity in the State of Punjab in North-Western India T2 - Management of Natural Resources in a Changing Environment N2 - Lately there has been an increasing concern about uranium toxicity in some districts of Punjab State located in the North Western part of India after the publication of a report (Blaurock-Busch et al. 2010) which showed that the concentration of uranium in hair and urine of children suffering from physical deformities, neurological and mental disorder from Malwa region (Fig. 1) of Punjab State was manifold higher than the reference ranges. A train which connects the affected region with the nearby city of Bikaner which has a Cancer Hospital has been nicknamed as Cancer Express due to the frenzy generated on account of uranium related toxicity. Y1 - 2015 SN - 978-3-319-12559-6 U6 - https://doi.org/10.1007/978-3-319-12559-6_21 SP - 271 EP - 275 PB - Springer CY - Cham ER - TY - CHAP A1 - Sirazitdinova, Y. A1 - Dulzon, A. A1 - Müller, Burghard T1 - Project management practices in engineering university T2 - 21st International Conference for Students and Young Scientists: Modern Technique and Technologies, MTT 2015; National Research Tomsk Polytechnic UniversityTomsk; Russian Federation; 5 October 2015 through 9 October 2015 Y1 - 2015 U6 - https://doi.org/10.1088/1757-899X/93/1/012080 N1 - IOP Conference Series: Materials Science and Engineering Vol. 93, Issue 1 ER - TY - JOUR A1 - Srivastava, A. A1 - Lahiri, S. A1 - Maiti, M. A1 - Knolle, F. A1 - Hoyler, Friedrich A1 - Scherer, Ulrich W. A1 - Schnug, E. W. T1 - Study of naturally occurring radioactive material (NORM) in top soil of Punjab State from the North Western part of India JF - Journal of Radioanalytical and Nuclear Chemistry Y1 - 2014 U6 - https://doi.org/0.1007/s10967-014-3450-1 SN - 1588-2780 (E-Journal); 0022-4081 (Print); 0134-0719 (Print); 0236-5731 (Print); 1417-2097 (Print) VL - 2014 IS - 302 SP - 1049 EP - 1052 PB - Springer Nature CY - Basel ER - TY - JOUR A1 - Marx, Ulrich A1 - Schenk, Friedrich A1 - Behrens, Jan A1 - Meyr, Ulrike A1 - Wanek, Paul A1 - Zang, Werner A1 - Schmitt, Robert A1 - Brüstle, Oliver A1 - Zenke, Martin A1 - Klocke, Fritz T1 - Automatic production of induced pluripotent stem cells JF - Procedia CIRP : First CIRP Conference on BioManufacturing Y1 - 2013 SN - 2212-8271 VL - Vol. 5 SP - 2 EP - 6 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Pieper, Martin A1 - Schulz, Silvia T1 - Teaching Simulation Methods with COMSOL Multiphysics N2 - This paper describes two courses on simulation methods for graduate students: “Simulation Methods” and “Simulation and Optimization in Virtual Engineering” The courses were planned to teach young engineers how to work with simulation software as well as to understand the necessary mathematical background. As simulation software COMSOL is used. The main philosophy was to combine theory and praxis in a way that motivates the students. In addition “soft skills” should be improved. This was achieved by project work as final examination. As underlying didactical principle the ideas of Bloom’s revised taxonomy were followed. The paper basically focusses on educational aspects, e.g. how to structure the course, plan the exercises, organize the project work and include practical COMSOL examples. KW - COMSOL Multiphysics KW - Optimization module KW - LiveLink for MATLAB KW - Bloom Taxonomy KW - education Y1 - 2014 ER - TY - CHAP A1 - Wetter, Martin A1 - Kern, Alexander T1 - Number of lightning strikes to tall structures - comparison of calculations and measurements using a modern lightning monitoring system T2 - 2014 International Conference on Lightning Protection (ICLP), Shanghai, China Y1 - 2014 SP - 1 EP - 7 ER - TY - CHAP A1 - Kern, Alexander A1 - Schelthoff, Christof A1 - Mathieu, Moritz T1 - Calculation of interception efficiencies for mesh-type air-terminations according to IEC 62305-3 using a dynamic electro-geometrical model 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 - 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 - CHAP A1 - Rousseau, Alain A1 - Kern, Alexander T1 - How to deal with environmental risk in IEC 62305-2 T2 - 2014 International Conference on Lightning Protection (ICLP), Shanghai, China N2 - The 2nd edition of the lightning risk management standard (IEC 62305-2) considers structures, which may endanger environment. In these cases, the loss is not limited to the structure itself, which is valid for usual structures. In the past (Edition 1) this danger was simply taken into account by a special hazard factor, multiplying the existing risk for the structure with a number. Now, in the edition 2, we add to the risk for the structure itself a “second risk” due to the losses outside the structure. The losses outside can be treated independently from what occurs inside. This is a major advantage to analyze the risk for sensitive structures, like chemical plants, nuclear plants, or structures containing explosives, etc. In this paper, the existing procedure given by the European version EN 62305-2 Ed.2 is further developed and applied to a few structures. Y1 - 2014 SP - 521 EP - 527 ER - TY - CHAP A1 - Kern, Alexander A1 - Braun, Christian T1 - Risk management according to IEC 62305-2 edition 2: 2010–12 assessment of structures with a risk of explosion T2 - 2014 International Conference on Lightning Protection (ICLP), Shanghai, China N2 - Risk management for structures with a risk of explosion should be considered very carefully when performing a risk analysis according to IEC 62305-2. In contrast to the 2006 edition of the standard, the 2010 edition describes the topic “Structures with a risk of explosion” in more detail. Moreover, in Germany separate procedures and parameters are defined for the risk analysis of structures with a risk of explosion (Supplement 3 of the German DIN EN 62305-2 standard). This paper describes the contents and the relevant calculations of this Supplement 3, together with a numerical example. Y1 - 2014 SP - 1237 EP - 1242 ER - TY - THES A1 - Reyes Ochoa, Leonel T1 - Engineering aspects of a parabolic trough collector field with direct steam generation and an organic rankine cycle Y1 - 2014 N1 - Aachen, Fachhochsch., Masterarbeit, 2014 PB - Fachhochschule Aachen CY - Aachen 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 - CHAP A1 - Rosin, Julia A1 - Kubalski, Thomas A1 - Butenweg, Christoph T1 - Seismic Design of cylindrical liquid storage tanks T2 - Seismic design of industrial facilities : proceedings of the International Conference on Seismic Design of Industrial Facilities (SeDIF-Conference) ; [Aachen, 26. - 27. September 2013] / Chair of Structural Statics and Dynamics, RWTH Aachen. Sven Klinkel ..., ed. Y1 - 2014 SN - 978-3-658-02810-7 (E-Book) ; 978-3-658-02809-1 (Print) U6 - https://doi.org/10.1007/978-3-658-02810-7_36 SP - 429 EP - 440 PB - Springer Vieweg CY - Wiesbaden ER - TY - CHAP A1 - Altay, Okyay A1 - Butenweg, Christoph A1 - Klinkel, Sven T1 - Vibration mitigation of wind turbine towers by a new semiactive Tuned Liquid Column Damper T2 - 6. Word Congress on Structural Control and Monitoring, 15 - 17 July, 2014 Barcelona,Spain Y1 - 2014 ER - TY - CHAP A1 - Butenweg, Christoph A1 - Bursi, Oreste S. A1 - Nardin, Chiara A1 - Lanese, Igor A1 - Pavese, Alberto A1 - Marinković, Marko A1 - Paolacci, Fabrizio A1 - Quinci, Gianluca T1 - Experimental investigation on the seismic performance of a multi-component system for major-hazard industrial facilities T2 - Conference Proceedings: Pressure Vessels & Piping Conference Vol.5 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 behaviour 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 behaviour of the test structure and of its relative several installations is investigated. Furthermore, both process components and primary structure interactions are considered and analyzed. Several PGA-scaled artificial ground motions are applied to study the seismic response at different levels. After each test, dynamic identification measurements are carried out to characterize the system condition. The contribution presents the experimental setup of the investigated structure and installations, selected measurement data and describes the obtained damage. Furthermore, important findings for the definition of performance limits, the effectiveness of floor response spectra in industrial facilities will be presented and discussed. KW - industrial facilities KW - piping KW - installations KW - seismic loading KW - earthquakes Y1 - 2021 SN - 9780791885352 U6 - https://doi.org/10.1115/PVP2021-61696 N1 - ASME 2021 Pressure Vessels & Piping Conference, July 13–15, 2021, Virtual, Online PB - American Society of Mechanical Engineers (ASME) CY - New York ER - TY - JOUR A1 - Edip, K. A1 - Sesov, V. A1 - Butenweg, Christoph A1 - Bojadjieva, J. T1 - Development of coupled numerical model for simulation of multiphase soil JF - Computers and Geotechnics N2 - In this paper, a coupled multiphase model considering both non-linearities of water retention curves and solid state modeling is proposed. The solid displacements and the pressures of both water and air phases are unknowns of the proposed model. The finite element method is used to solve the governing differential equations. The proposed method is demonstrated through simulation of seepage test and partially consolidation problem. Then, implementation of the model is done by using hypoplasticity for the solid phase and analyzing the fully saturated triaxial experiments. In integration of the constitutive law error controlling is improved and comparisons done accordingly. In this work, the advantages and limitations of the numerical model are discussed. Y1 - 2018 U6 - https://doi.org/10.1016/j.compgeo.2017.08.016 SN - 0266-352X VL - 96 SP - 118 EP - 131 PB - Elsevier CY - Amsterdam ER - TY - CHAP A1 - Rajan, Sreelakshmy A1 - Kubalski, Thomas A1 - Altay, Okyay A1 - Dalguer, Luis A A1 - Butenweg, Christoph T1 - Multi-dimensional fragility analysis of a RC building with components using response surface method T2 - 24th International Conference on Structural Mechanics in Reactor Technology, Busan, Korea, 20-25 August, 2017 N2 - Conventional fragility curves describe the vulnerability of the main structure under external hazards. However, in complex structures such as nuclear power plants, the safety or the risk depends also on the components associated with a system. The classical fault tree analysis gives an overall view of the failure and contains several subsystems to the main event, however, the interactions in the subsystems are not well represented. In order to represent the interaction of the components, a method suggested by Cimellaro et al. (2006) using multidimensional performance limit state functions to obtain the system fragility curves is adopted. This approach gives the possibility of deriving the cumulative fragility taking into account the interaction of the response of different components. In this paper, this approach is used to evaluate seismic risk of a representative electrical building infrastructure, including the component, of a nuclear power plant. A simplified model of the structure, with nonlinear material behavior is employed for the analysis in Abaqus©. The input variables considered are the material parameters, boundary conditions and the seismic input. The variability of the seismic input is obtained from selected ground motion time histories of spectrum compatible synthetic ccelerograms. Unlike the usual Monte Carlo methods used for the probabilistic analysis of the structure, a computationally effective response surface method is used. This method reduces the computational effort of the calculations by reducing the required number of samples. Y1 - 2017 SN - 9781510856776 SP - 3126 EP - 3135 PB - International Assn for Structural Mechanics in Reactor Technology (IASMiRT) CY - Raleigh, USA ER - TY - CHAP A1 - Milijaš, Aleksa A1 - Šakić, Bogdan A1 - Marinković, Marko A1 - Butenweg, Christoph ED - Papadrakakis, Manolis ED - Fragiadakis, Michalis T1 - Experimental investigation of behaviour of masonry infilled RC frames under out-of-plane loading T2 - Proceedings of COMPDYN 2021 N2 - Masonry infills are commonly used as exterior or interior walls in reinforced concrete (RC) frame structures and they can be encountered all over the world, including earthquake prone regions. Since the middle of the 20th century the behaviour of these non-structural elements under seismic loading has been studied in numerous experimental campaigns. However, most of the studies were carried out by means of in-plane tests, while there is a lack of out-of-plane experimental investigations. In this paper, the out-of-plane tests carried out on full scale masonry infilled frames are described. The results of the out-of-plane tests are presented in terms of force-displacement curves and measured out-of-plane displacements. Finally, the reliability of existing analytical approaches developed to estimate the out-of-plane strength of masonry infills is examined on presented experimental results. KW - Seismic loading KW - Masonry infill KW - Out-of-plane load KW - Out-of-plane strength Y1 - 2021 SN - 978-618-85072-5-8 U6 - https://doi.org/10.7712/120121.8528.18914 SN - 2623-3347 N1 - COMPDYN 2021, 28-30 June 2021, Streamed from Athens, Greece, 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering SP - 829 EP - 846 PB - National Technical University of Athens CY - Athen 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 - JOUR A1 - Marinkovic, Marko A1 - Butenweg, Christoph T1 - Numerical analysis of the in-plane behaviour of decoupled masonry infilled RC frames JF - Engineering Structures N2 - Damage of reinforced concrete (RC) frames with masonry infill walls has been observed after many earthquakes. Brittle behaviour of the masonry infills in combination with the ductile behaviour of the RC frames makes infill walls prone to damage during earthquakes. Interstory deformations lead to an interaction between the infill and the RC frame, which affects the structural response. The result of this interaction is significant damage to the infill wall and sometimes to the surrounding structural system too. In most design codes, infill walls are considered as non-structural elements and neglected in the design process, because taking into account the infills and considering the interaction between frame and infill in software packages can be complicated and impractical. A good way to avoid negative aspects arising from this behavior is to ensure no or low-interaction of the frame and infill wall, for instance by decoupling the infill from the frame. This paper presents the numerical study performed to investigate new connection system called INODIS (Innovative Decoupled Infill System) for decoupling infill walls from surrounding frame with the aim to postpone infill activation to high interstory drifts thus reducing infill/frame interaction and minimizing damage to both infills and frames. The experimental results are first used for calibration and validation of the numerical model, which is then employed for investigating the influence of the material parameters as well as infill’s and frame’s geometry on the in-plane behaviour of the infilled frames with the INODIS system. For all the investigated situations, simulation results show significant improvements in behaviour for decoupled infilled RC frames in comparison to the traditionally infilled frames. KW - Seismic loading KW - Earthquake KW - In-plane performance, isolation KW - Infill wall design KW - Numerical modelling Y1 - 2022 U6 - https://doi.org/10.1016/j.engstruct.2022.114959 SN - 0141-0296 VL - 272 IS - 1 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Baumgartner, Werner A1 - Fidler, Florian A1 - Weth, Agnes A1 - Habbecke, Martin A1 - Jakob, Peter A1 - Butenweg, Christoph A1 - Böhme, Wolfgang T1 - Investigating the locomotion of the sandfish in desert sand using NMR-Imaging JF - PLOS ONE N2 - The sandfish (Scincus scincus) is a lizard having the remarkable ability to move through desert sand for significant distances. It is well adapted to living in loose sand by virtue of a combination of morphological and behavioural specializations. We investigated the bodyform of the sandfish using 3D-laserscanning and explored its locomotion in loose desert sand using fast nuclear magnetic resonance (NMR) imaging. The sandfish exhibits an in-plane meandering motion with a frequency of about 3 Hz and an amplitude of about half its body length accompanied by swimming-like (or trotting) movements of its limbs. No torsion of the body was observed, a movement required for a digging-behaviour. Simple calculations based on the Janssen model for granular material related to our findings on bodyform and locomotor behaviour render a local decompaction of the sand surrounding the moving sandfish very likely. Thus the sand locally behaves as a viscous fluid and not as a solid material. In this fluidised sand the sandfish is able to “swim” using its limbs. KW - magnetic resonance imaging KW - body limbs KW - swimming KW - lizards KW - deserts Y1 - 2008 U6 - https://doi.org/10.1371/journal.pone.0003309 SN - 1932-6203 VL - 3 IS - 10 PB - Plos CY - San Francisco, California, US ER - TY - CHAP A1 - Taddei, Francesca A1 - Lozana, Lara A1 - Michel, Philipp A1 - Butenweg, Christoph A1 - Klinkel, Sven ED - Papadrakakis, Manolis ED - Papadrakakis, M. ED - Papadopoulos, V. ED - Plevris, V. T1 - Practical recommendations for the foundation design of onshore wind turbines including soil-structure interaction T2 - 5th International Conference on Computational Methods in Structural , Hersonissos, Greece Dynamics and Earthquake Engineering, COMPDYN 2015, 25.05.2015-27.05.2015, Hersonissos, Greece. Y1 - 2015 ER - TY - JOUR A1 - Alexopoulos, Spiros A1 - Breitbach, Gerd A1 - Hoffschmidt, Bernhard A1 - Stobbe, P. T1 - Optimization of the geometry of porous SiC ceramic filtering modules using numerical methods JF - Developments in porous, biological and geopolymer ceramics : a collection of papers presented at the 31st International Conference on Advanced Ceramics and Composites, January 21 - 26, 2007, Daytona Beach, Florida ; [papers presented at the Symposium on Porous Ceramics: Novel Developments and Applications] / ed.: Manuel Brito ... Vol. ed.: Jonathan Salem ... The American Ceramics Society Y1 - 2008 SN - 9780470196403 N1 - Ceramic engineering and science proceedings ; 28,9 SP - 95 EP - 104 PB - Wiley CY - Hoboken, NJ ER - TY - CHAP A1 - Konrad, M. A1 - Chudoba, Rostislav A1 - Butenweg, Christoph A1 - Bruckermann, O. T1 - Textile reinforced concrete. Part II: Multi-level modeling concept T2 - Digital proceedings / IKM 2003, proceedings 16th International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering [Elektronische Ressource : 10. - 12. Juni 2003, Weimar] / Bauhaus-Universität Weimar. Ed.: K. Gürlebeck; L. Hempel; C. Könke Y1 - 2003 SP - 1 EP - 11 PB - IKM CY - Weimar ER - TY - JOUR A1 - Giresini, Linda A1 - Sassu, Mauro A1 - Butenweg, Christoph A1 - Alecci, Valerio A1 - De Stefano, Mario T1 - Vault macro-element with equivalent trusses in global seismic analyses JF - Earthquakes and Structures N2 - This paper proposes a quick and simplified method to describe masonry vaults in global seismic analyses of buildings. An equivalent macro-element constituted by a set of six trusses, two for each transverse, longitudinal and diagonal direction, is introduced. The equivalent trusses, whose stiffness is calculated by fully modeled vaults of different geometry, mechanical properties and boundary conditions, simulate the vault in both global analysis and local analysis, such as kinematic or rocking approaches. A parametric study was carried out to investigate the influence of geometrical characteristics and mechanical features on the equivalent stiffness values. The method was numerically validated by performing modal and transient analysis on a three naves-church in the elastic range. Vibration modes and displacement time-histories were compared showing satisfying agreement between the complete and the simplified models. This procedure is particularly useful in engineering practice because it allows to assess, in a simplified way, the effectiveness of strengthening interventions for reducing horizontal relative displacements between vault supports. KW - vault KW - macro-element KW - equivalent stiffness KW - truss KW - churches Y1 - 2017 U6 - https://doi.org/10.12989/eas.2017.12.4.409 SN - 2092-7614 (Print) SN - 2092-7622 (Online) VL - 12 IS - 4 SP - 409 EP - 423 PB - Techno-Press CY - Taejŏn ER - TY - CHAP A1 - Tomic, Igor A1 - Penna, Andrea A1 - DeJong, Matthew A1 - Butenweg, Christoph A1 - Senaldi, Ilaria A1 - Guerrini, Gabriele A1 - Malomo, Daniele A1 - Beyer, Katrin T1 - Blind predictions of shake table testing of aggregate masonry buildings T2 - Proceedings of the 17th World Conference on Earthquake Engineering N2 - In many historical centers in Europe, stone masonry is part of building aggregates, which developed when the layout of the city or village was densified. The analysis of such building aggregates is very challenging and modelling guidelines missing. Advances in the development of analysis methods have been impeded by the lack of experimental data on the seismic response of such aggregates. The SERA project AIMS (Seismic Testing of Adjacent Interacting Masonry Structures) provides such experimental data by testing an aggregate of two buildings under two horizontal components of dynamic excitation. With the aim to advance the modelling of unreinforced masonry aggregates, a blind prediction competition is organized before the experimental campaign. Each group has been provided a complete set of construction drawings, material properties, testing sequence and the list of measurements to be reported. The applied modelling approaches span from equivalent frame models to Finite Element models using shell elements and discrete element models with solid elements. This paper compares the first entries, regarding the modelling approaches, results in terms of base shear, roof displacements, interface openings, and the failure modes. KW - Historical centres KW - Stone masonry KW - Adjacent buildings KW - Shake table test KW - Blind prediction competition Y1 - 2020 N1 - 17th World Conference on Earthquake Engineering, Sendai, Japan, September 27 to October 2, 2021 N1 - (Die Konferenz war ursprünglich für den 13-18 September 2020 angesetzt) ER - TY - CHAP A1 - Gömmel, Andreas A1 - Kob, Malte A1 - Niendorf, Thoralf A1 - Butenweg, Christoph T1 - An approach for numerical calculation of glottal flow during glottal closure T2 - Proceedings / NAG/DAGA 2009, International Conference on Acoustics : Rotterdam, 23 - 26 March 2009 ; [including the 35th German Annual Conference on Acoustics (DAGA)] / [organisers: Acoustical Society of the Netherlands (NAG); German Acoustical Society (DEGA) ...]. Ed. by Marinus M. Boone Y1 - 2009 SN - 978-3-9808659-6-8 SP - 1722 EP - 1725 PB - DEGA CY - Berlin ER - TY - CHAP A1 - Butenweg, Christoph A1 - Rosin, Julia A1 - Kubalski, Thomas T1 - Seismic response of conventional and base-isolated liquid storage tanks T2 - International Conference on Earthquake Engineering : 29.-31.05.2013, Skopje, Mazedonien Y1 - 2013 SP - 1 EP - 8 ER - TY - CHAP A1 - Altay, Okyay A1 - Butenweg, Christoph A1 - Klinkel, Sven T1 - Vibration control of slender structures by semi-active tuned liquid column dampers T2 - Conference of the ASCE Engineering Mechanics Institute , Evanston, IL , USA , EMI 2013 , 2013-08-04 - 2013-08-07 Y1 - 2013 N1 - http://www.emi2013.northwestern.edu/openconf/modules/request.php?module=oc_program&action=view.php&a=&id=213&type=1 Seite kann nicht gefunden werden. ER - TY - JOUR A1 - Chudoba, Rostislav A1 - Butenweg, Christoph A1 - Peiffer, F. T1 - Technical information system for collaborative material research JF - Advances in engineering software Y1 - 2004 U6 - https://doi.org/10.1016/j.advengsoft.2004.03.021 SN - 1873-5339 (E-Journal); 0965-9978 (Print) VL - Volume 35 IS - Issue 10-11 SP - 747 EP - 756 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 - CHAP A1 - Kob, Malte A1 - Butenweg, Christoph T1 - A finite element model of the interaction between intra-and extralaryngeal muscles T2 - International Conference on Voice Physiology and Biomechanics, August 18-20, 2004, Marseille, France Y1 - 2004 SP - 1 EP - 2 ER - TY - CHAP A1 - Dalguer, Luis A. A1 - Renault, Philippe A1 - Churilov, Sergey A1 - Butenweg, Christoph T1 - Evaluation of fragility curves for a three-storey-reinforced-concrete mock-up of SMART 2013 project T2 - Transactions, SMiRT-23 : 23rd Conference on Structural Mechanics in Reactor Technology : Manchester, United Kingdom - August 10-14, 2015 Y1 - 2016 SP - 1 EP - 9 ER - TY - CHAP A1 - Giresini, Linda A1 - Butenweg, Christoph T1 - Earthquake resistant design of structures according to Eurocode 8 T2 - Structural Dynamics with Applications in Earthquake and Wind Engineering N2 - The chapter initially provides a summary of the contents of Eurocode 8, its aim being to offer both to the students and to practising engineers an easy introduction into the calculation and dimensioning procedures of this earthquake code. Specifically, the general rules for earthquake-resistant structures, the definition of design response spectra taking behaviour and importance factors into account, the application of linear and non-linear calculation methods and the structural safety verifications at the serviceability and ultimate limit state are presented. The application of linear and non-linear calculation methods and corresponding seismic design rules is demonstrated on practical examples for reinforced concrete, steel and masonry buildings. Furthermore, the seismic assessment of existing buildings is discussed and illustrated on the example of a typical historical masonry building in Italy. The examples are worked out in detail and each step of the design process, from the preliminary analysis to the final design, is explained in detail. KW - Seismic design KW - Eurocode 8 KW - Design examples KW - Response spectrum KW - Pushover 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_4 SP - 197 EP - 358 PB - Springer CY - Berlin ER - TY - CHAP A1 - Kalker, Ines A1 - Toll, B. A1 - Holler, Stefan A1 - Butenweg, Christoph A1 - Topping, B. H. V. A1 - Mota Soares, C. A. T1 - Capacity analysis of textile retrofitted unreinforced masonry T2 - Proceedings of the Seventh International Conference on Computational Structures Technology : [Lisbon, Portugal, 7 - 9 September 2004] / ed. by B. H. V. Topping ... Y1 - 2004 SN - 0-948749-95-4 U6 - https://doi.org/10.4203/ccp.79.194 SP - 431 EP - 432 PB - Civil-Comp Press CY - Stirling ER - TY - JOUR A1 - Butenweg, Christoph A1 - Rosin, Julia A1 - Holler, Stefan T1 - Analysis of cylindrical granular material silos under seismic excitation JF - Buildings N2 - Silos generally work as storage structures between supply and demand for various goods, and their structural safety has long been of interest to the civil engineering profession. This is especially true for dynamically loaded silos, e.g., in case of seismic excitation. Particularly thin-walled cylindrical silos are highly vulnerable to seismic induced pressures, which can cause critical buckling phenomena of the silo shell. The analysis of silos can be carried out in two different ways. In the first, the seismic loading is modeled through statically equivalent loads acting on the shell. Alternatively, a time history analysis might be carried out, in which nonlinear phenomena due to the filling as well as the interaction between the shell and the granular material are taken into account. The paper presents a comparison of these approaches. The model used for the nonlinear time history analysis considers the granular material by means of the intergranular strain approach for hypoplasticity theory. The interaction effects between the granular material and the shell is represented by contact elements. Additionally, soil–structure interaction effects are taken into account. KW - granular silo KW - earthquake engineering KW - hypoplasticity KW - nonlinear transient analyses Y1 - 2017 U6 - https://doi.org/10.3390/buildings7030061 SN - 2075-5309 VL - 7 IS - 3 SP - 1 EP - 12 PB - MDPI CY - Basel ER - TY - CHAP A1 - Giresini, Linda A1 - Butenweg, Christoph A1 - Andreini, M. A1 - De Falco, A. A1 - Sassu, M. T1 - Macro-elements identification in historic chapels: the case of St. Venerio Chapel in Reggiolo - Emilia Romagna T2 - 9th International Conference on Structural Analyses of Historical Conctruction, 14 - 17 October, 2014, Mexico City Y1 - 2014 SP - 1 EP - 12 ER - TY - CHAP A1 - Meskouris, Konstantin A1 - Holler, Stefan A1 - Butenweg, Christoph A1 - Meiners, Daniel T1 - A multiphase model with hypoplastic formulation of the solid phase and its application to earthquake engineering problems T2 - Computational structural dynamics and earthquake engineering / ed. by Manolis Papadrakakis .... (Structures and infrastructures series ; 2) Y1 - 2009 SN - 978-0-415-45261-8 U6 - https://doi.org/10.1201/9780203881637.ch19 SP - 293 EP - 308 PB - CRC Press CY - Boca Raton, Fla. [u.a.] ER - TY - CHAP A1 - Rajan, Sreelakshmy A1 - Holtschoppen, B. A1 - Dalguer, L. A. A1 - Klinkel, S. A1 - Butenweg, Christoph ED - Sas, P. T1 - Seismic fragility analysis of a non-conventional reinforced concrete structure considering different uncertainties T2 - Proceedings of ISMA2016, International Conference on Noise and Vibration Engineering/USD2016, International Conference on Uncertainty in Structural Dynamics, / ISMA 2016, USD 2016 Y1 - 2016 SP - 4213 EP - 4225 PB - KU Leuven CY - Leuven ER - TY - JOUR A1 - Steuer-Dankert, Linda A1 - Sharma, Mamta Rameshwarlal A1 - Bleck, Wolfgang A1 - Leicht-Scholten, Carmen T1 - Diversity and innovation management in large research groups JF - International Journal of Innovation Management N2 - Contemporary research appreciates a diverse workforce as a potential source of innovation. Researchers explore the fine details of why diversity management is central for generating innovations in heterogeneous research groups and how it could be effectively implemented into organizations. Complex research associations that discuss topics with a high impact on society increasingly address the necessity of establishing a diverse workforce to confront the challenges of tomorrow. Characterized by complex management structures as well as hierarchies, research associations have not been a subject of investigation until now. For this reason, the presented research project aims to develop a diversity and innovation management strategy with the ultimate goal of inducing change in the corporate culture. The proposed approach consisted of six phases; the first two phases investigated the status quo of diversity in the existing organizational structures of member institutes and the variety of particular working cultures within the research association. The third and the fourth phases utilized qualitative and quantitative studies. The third phase focused on the connection of management level to diversity and innovation, and the need for diversity and innovation management, and tailor-made methods of implementing them. The first three phases have been accomplished successfully; preliminary results are already available. The fourth phase will mainly focus on exploring the mind-set of the employees. The fifth phase will consolidate the findings in the first four phases into an implementable strategy. The final phase will address the implementation of this strategy into the organization. Phases 4 to 6 have not yet been undertaken KW - diversity management KW - innovation management KW - research association KW - change management KW - engineering Y1 - 2017 SN - 1757-5877 VL - 5 IS - 2 SP - 49 EP - 72 ER -