TY  - JOUR
A1  - Backes, Klaus
A1  - Adam, Mario
A1  - Gottschald, Beng Jonas
A1  - Faber, Christian
A1  - Henneböhl, Friedrich-Gregor
A1  - Lanz, Marco
A1  - Anthrakidis, Anette
T1  - KWKK-Anlagen im Feldtest. Optimaler Betrieb durch Verbesserungen bei Regelung und Hydraulik
JF  - Die Kälte- und Klimatechnik
Y1  - 2012
SN  - 0343-2246
IS  - 2
PB  - Gentner
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Zischank, Wolfgang J.
A1  - Heidler, Fridolin
A1  - Wiesinger, J.
A1  - Metwally, I.
A1  - Kern, Alexander
A1  - Seevers, M.
T1  - Laboratory simulation of direct lightning strokes to a modeled building : measurement of magnetic fields and included voltages
JF  - Journal of electrostatics. 60 (2004), H. 2 - 4
Y1  - 2004
SN  - 0304-3886
N1  - ISSN der E-Ausg.: 0304-3886
SP  - 223
EP  - 232
ER  - 
TY  - CHAP
A1  - Zischank, Wolfgang J.
A1  - Heidler, Fridolin
A1  - Kern, Alexander
A1  - Metwally, I. A.
A1  - Wiesinger, J.
A1  - Seevers, M.
T1  - Laboratory simulation of direct lightning strokes to a modelled building - measurement of magnetic fields and induced voltages
N2  - In IEC 61312-2 equations for the assessment of the magnetic fields inside structures due to a direct lightning strike are given. These equations are based on computer simulations for shields consisting of a single-layer steel grid of a given mesh width. Real constructions, however, contain at least two layers of reinforcement steel grids. The objective of this study was to experimentally determine the additional shielding effectiveness of a second reinforcement layer compared to a single-layer grid. To this end, simulated structures were set up in the high current laboratory. The structures consisted of cubic cages of 2 m side length with one or with two reinforcement grids, respectively. The structures were exposed to direct lightning currents representing the variety of anticipated lightning current waveforms. The magnetic fields and their derivatives at several positions inside the structure as well as the voltage between “floor” and “roof” in the center were determined for different current injection points. From these data the improvement of the shielding caused by a second reinforcement layer is derived.
KW  - Direkter Blitzschlag
KW  - Elektromagnetischer Schutzschild
KW  - Magnetische Felder
KW  - Induzierte Spannungen
KW  - Stahlbetonkonstruktion
KW  - Lightning
KW  - electromagnetic shielding
KW  - magnetic field
KW  - reinforced concrete
KW  - induced voltage
Y1  - 2002
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Werner, M.
A1  - Hartz, T.
T1  - Lacasa - an instrument for the energy analysis and optimisation of buildings including technical equipment
JF  - Proceedings / organised by: ISES Europe ... [Ed.: Deutsche Gesellschaft für Sonnenenergie e.V. - DGS, Munich ; PSE GmbH - Forschung Entwicklung Marketing, Freiburg]. - Vol. 2
Y1  - 2004
SN  - 3-9809656-2-7
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  - 2-489-2-494
PB  - PSE
CY  - Freiburg [Breisgau]
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  - 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  - http://dx.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  - Morandi, Paolo
A1  - Butenweg, Christoph
A1  - Breis, Khaled
A1  - Beyer, Katrin
A1  - Magenes, Guido
ED  - Ansal, Atilla
T1  - Latest findings on the behaviour factor q for the seismic design of URM buildings
JF  - Bulletin of Earthquake Engineering
N2  - Recent earthquakes as the 2012 Emilia earthquake sequence showed that recently built unreinforced masonry (URM) buildings behaved much better than expected and sustained, despite the maximum PGA values ranged between 0.20–0.30 g, either minor damage or structural damage that is deemed repairable. Especially low-rise residential and commercial masonry buildings with a code-conforming seismic design and detailing behaved in general very well without substantial damages. The low damage grades of modern masonry buildings that was observed during this earthquake series highlighted again that codified design procedures based on linear analysis can be rather conservative. Although advances in simulation tools make nonlinear calculation methods more readily accessible to designers, linear analyses will still be the standard design method for years to come. The present paper aims to improve the linear seismic design method by providing a proper definition of the q-factor of URM buildings. These q-factors are derived for low-rise URM buildings with rigid diaphragms which represent recent construction practise in low to moderate seismic areas of Italy and Germany. The behaviour factor components for deformation and energy dissipation capacity and for overstrength due to the redistribution of forces are derived by means of pushover analyses. Furthermore, considerations on the behaviour factor component due to other sources of overstrength in masonry buildings are presented. As a result of the investigations, rationally based values of the behaviour factor q to be used in linear analyses in the range of 2.0–3.0 are proposed.
KW  - Unreinforced masonry buildings
KW  - Modern constructions
KW  - Seismic design
KW  - Linear elastic analysis
KW  - Behaviour factor q
Y1  - 2022
U6  - http://dx.doi.org/10.1007/s10518-022-01419-7
SN  - 1573-1456
SN  - 1570-761X
VL  - 20
IS  - 11
SP  - 5797
EP  - 5848
PB  - Springer Nature
CY  - Cham
ER  - 
TY  - JOUR
A1  - Förster, Arnold
T1  - Layer Deposition I
JF  - Fundamentals of nanoelectronics / Stefan Blügel ... (ed.). - (Lecture manuscripts of the ... Spring School of the Department of Solid State Research ; 34). - (Schriften des Forschungszentrums Jülich : Materie und Material ; 14 ; 34)
Y1  - 2003
SN  - 3-89336-319-X
SP  - C2.1
EP  - C2.13
PB  - Forschungszentrum, Zentralbibliothek
CY  - Jülich
ER  - 
TY  - BOOK
A1  - Mohnke, Andreas
T1  - Lehr- und Übungsbuch Mikrosystemtechnik : Grundlagen ; mit 24 Tabellen
Y1  - 2005
SN  - 3-446-40007-9
PB  - Fachbuchverl. Leipzig im Carl-Hanser-Verl.
CY  - München
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Bieger, A.
A1  - Späte, F.
T1  - Leistungsfähigkeit von solaren Warmwasserbereitungsanlagen : Ergebnisse des Forschungsprojektes VELS I
JF  - Energie und unsere Umwelt : 30. Juni bis 3. Juli 1992 ; [Tagungsbericht 1] ; 8. Internationales Sonnenforum '92 / [Hrsg.: Deutsche Gesellschaft für Sonnenenergie e.V., DGS. Red.: A. Hohmann ...]. - (Internationales Sonnenforum ; 8,1)
Y1  - 1992
N1  - Internationales Sonnenforum <8, 1992, Berlin>
SP  - 307
EP  - 312
PB  - DGS-Sonnenenergie
CY  - München
ER  - 
TY  - CHAP
A1  - Pieper, Martin
T1  - Lernzielorientierte Kurse und Stack Aufgaben in der Mathematikausbildung
T2  - Beiträge zum Mathematikunterricht 2018 : Vorträge zur Mathematikdidaktik und zur Schnittstelle Mathematik/Mathematikdidaktik auf der gemeinsamen Jahrestagung GDM und DMV 2018 (52. Jahrestagung der Gesellschaft für Didaktik der Mathematik). Bd. 3
Y1  - 2018
SN  - 978-3-95987-089-4
SP  - 1399
EP  - 1402
PB  - WTM-Verlag
CY  - Münster
ER  - 
TY  - JOUR
A1  - Hoyler, Friedrich
A1  - Balodis, M.
A1  - Prokofjevs, P.
T1  - Level scheme of 194Ir / M. Balodis ; P. Prokofjevs ... F. Hoyler ...
JF  - Nuclear physics <Amsterdam> / A. 641 (1998), H. 2
Y1  - 1998
SN  - 0375-9474
SP  - 133
EP  - 187
ER  - 
TY  - CHAP
A1  - Evers, Jörg
A1  - Fleischhaker, Robert
A1  - Pálffy, A.
A1  - Keitel, C.
T1  - Light propagation : From atomic to nuclear quantum optics
T2  - Modern optics and photonics: atoms and structured media
Y1  - 2010
SN  - 978-981431327-8
U6  - http://dx.doi.org/10.1142/9789814313278_0001
SP  - 3
EP  - 15
PB  - World Scientific Publishing Co.
ER  - 
TY  - THES
A1  - Fleischhaker, Robert
T1  - Light propagation in dense and chiral media
Y1  - 2009
N1  - Heidelberg, Univ., Diss., 2009
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Heidler, Fridolin
A1  - Zischank, Wolfgang J.
A1  - Frentzel, Ralf
T1  - Lightning current distribution and coupling to control cables in power plants or large industrial facilites
Y1  - 2002
N1  - International Conference on Grounding and Earthing <2002, Rio de Janeiro>
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Krichel, Frank
A1  - Neskakis, Apostolos
A1  - Müller, Klaus-Peter (u.a.)
T1  - Lightning protection design of a renewable energy hybrid-system without power mains connection
Y1  - 2001
N1  - International Conference on Renewable Energies for Islands <2001, Crete>
ER  - 
TY  - CHAP
A1  - Kern, Alexander
A1  - Krichel, Frank
A1  - Müller, Klaus-Peter
T1  - Lightning protection design of a renewable energy hybrid-system without power mains connection
N2  - In the year 2000 a direct lightning strike to the hybridsystem without power mains connection VATALI on the Greek island Crete results in the destruction and damage of some mechanical and electrical components. The hybrid-system VATALI was not lightning protected at that time. The hardware damage costs are approx. 60,000 €. The exposed site of the hybrid-system on top of a mountain was and still is the reason for a high risk of lightning strikes. Also in the future further lightning strikes have to be taken into consideration. In the paper a fundamental lightning protection design concept for renewable energy hybrid-systems without power mains connection and protection measures against direct strikes and overvoltages are shown in detail. The design concept was realized exemplarily for the hybrid-system VATALI. The hardware costs for the protection measures were about 15,000 €. About 50% of the costs are due to protection measures against direct strikes, 50% are due to overvoltage protection. Future extensions, new installations, or modifications have to be included into the lightning protection design concept of the hybrid-system.
KW  - Blitzschutz
KW  - Erneuerbare Energien
KW  - Hybridsystem
KW  - Lightning protection
KW  - Renewable energy
KW  - hybrid-system
Y1  - 2001
ER  - 
TY  - JOUR
A1  - Bouquegneau, Christian
A1  - Kern, Alexander
A1  - Rousseau, Alain
T1  - Lightning safety guidelines
Y1  - 2010
N1  - Ground´2010 International Conference on Grounding and Earthing ; 4th International Conference ond Lightning Physics and Effects, Nov. 2010 Salvador - Brazil
SP  - 1
EP  - 6
ER  - 
TY  - RPRT
A1  - Ghinaiya, Jagdishkumar
A1  - Lehmann, Thomas
A1  - Göttsche, Joachim
T1  - LOCAL+ – ein kreislauffähiger Holzmodulbau mit nachhaltigem Energie- und Wohnraumkonzept
T2  - Bauphysik
N2  - Mit dem Beitrag des Teams der FH Aachen zum SDE 21/22 wird im Projekt LOCAL+ ein kreislauffähiger Holzmodulbau mit einem innovativen Wohnraumkonzept geplant und umgesetzt. Ziel dieses Konzeptes ist die Verringerung des stetig steigenden Wohnflächenbedarfs durch ein Raum-in-Raum Konzept. Gebäudetechnisch wird in dem Projekt nicht nur das Einzelgebäude betrachtet, sondern unter Berücksichtigung des Gebäudebestandes wird für das Quartier ein innovatives und nachhaltiges Energiekonzept entwickelt. Ein zentrales Wasserstoffsystem ist für ein Quartier geplant, um den Stromverbrauch aus dem Netz im Winter zu reduzieren. Zentraler Bestandteil des TGA-Konzepts ist ein unterirdischer Eisspeicher, eine PVT und eine Wärmepumpe mit intelligenter Regelstrategie. Ein Teil des neuen Gebäudes (Design Challenge DC) wird in Wuppertal als Hausdemonstrationseinheit (HDU) präsentiert. Eine hygrothermische Simulation der HDU wurde mit der WUFI-Software durchgeführt. Da im Innenraum Lehmmodule und -platten als Feuchtigkeitspuffer verwendet werden, spielen die Themen Feuchtigkeit, Holzfäule und Schimmelwachstum eine wichtige Rolle.
KW  - Energiekonzept
KW  - Gesamtwassergehalt
KW  - Feuchtigkeit
KW  - Verdunstungskälte
KW  - energy concept
Y1  - 2022
U6  - http://dx.doi.org/10.1002/bapi.202200010
SN  - 0171-5445 (Print)
SN  - 1437-0980 (Online)
VL  - 44
IS  - 3
SP  - 136
EP  - 142
PB  - Ernst & Sohn
CY  - Hoboken
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  - JOUR
A1  - Förster, Arnold
A1  - Janssen, G.
A1  - Roer, T. G. van de
T1  - Logic Circuits with reduced complexity based on devices with higher functionality / G. Janssen ; T. G. van de Roer ; W. Prost ... A. Förster
JF  - Proceedings / STW/SAFE 2nd Annual Workshop on Semiconductor Advances for Future Electronics, Safe '99 - ProRISC/IEEE 10th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC 99 : November 24 - 26, 1999, Mierlo, The Netherlands [Elektronische Ressource]
Y1  - 1999
N1  - SAFE <2, 1999, Mierlo> ; Workshop on Circuits, Systems and Signal Processing <10, 1999, Mierlo> ; Stichting voor de Technische Wetenschappen
SP  - 219
PB  - Technology Foundation, STW
CY  - Utrecht
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  - Kern, Alexander
A1  - Zischank, Wolfgang J.
T1  - Längsspannung an blitzstromdurchflossenen Schirmkabeln - Einfluß paralleler Entlastungsleitungen
JF  - Elektrie : wissenschaftlich-technische Zeitschrift der Elektrotechnik. 47 (1993), H. 6
Y1  - 1993
SN  - 0013-5399
N1  - 2. ISSN: 0013-5400
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  - Kern, Alexander
A1  - Heidler, Fridolin
A1  - Seevers, M.
A1  - Zischank, Wolfgang J.
T1  - Magnetic Fields and Induced Voltages in case of a Direct Strike - Comparison of Results obtained from Measurements at a Scaled Building to those of IEC 62305-4
N2  - In the paper the results obtained from experiments at a modelled reinforced building in case of a direct lightning strike are compared with calculations. The comparison includes peak values of the magnetic field Hmax, its derivative (dH/dt)max and of induced voltages umax in typical cable routings. The experiments are performed at a 1:6 scaled building and the results are extrapolated using the similarity relations theory. The calculations are based on the approximate formulae given in IEC 62305-4 and have to be supplemented by a rough estimation of the additional shielding effect of a second reinforcement layer. The comparison shows, that the measured peak values of the magnetic field and its derivative are mostly lower than the calculated. The induced voltages are in good agreement. Hence, calculations of the induced voltages based on IEC 62305-4 are a good method for lightning protection studies of buildings, where the reinforcement is used as a grid-like electromagnetic shield.
N2  - Auswirkungen eines direkten Blitzeinschlages auf ein Gebäude, Vergleich von experimentellen Ergebnissen und Berechnungen basierend auf einer Formel aus der IEC 62305-4
KW  - Blitz
KW  - Direkter Blitzschlag
KW  - Elektromagnetischer Schutzschild
KW  - Magnetische Felder
KW  - Induzierte Spannungen
KW  - Kalkulation
KW  - Direct lightning strike
KW  - electromagnetic shield
KW  - magnetic fields
KW  - induced voltages
KW  - calculations
Y1  - 2004
SN  - 0304-3886
N1  - Journal of electrostatics: Beitr. auf S. 379 - 385. doi:10.1016/j.elstat.2006.09.004
ER  - 
TY  - CHAP
A1  - Zischank, Wolfgang J.
A1  - Heidler, Fridolin
A1  - Wiesinger, J.
A1  - Stimper, K.
A1  - Kern, Alexander
A1  - Seevers, M.
T1  - Magnetic Fields and Induced Voltages inside LPZ 1 Measured at a 1:6 Scale Model Building
N2  - Laborexperimente zu Blitzschutzzonen in Stahlbetongebäuden anhand eines Modells im Maßstab 1:6
N2  - For the application of the concept of Lightning Protection Zones (LPZ), the knowledge of the magnetic fields and induced voltages inside a structure is necessary. Laboratory experiments have been conducted at a downscaled model of a building (scale factor 1:6) to determine these electromagnetic quantities in case of a direct strike to the structure. The model (3 m x 2 m x 2 m) represented a small industrial building using the reinforcement of the concrete as electromagnetic shield. The magnetic fields and magnetic field derivatives were measured at several location inside the scaled model. Further, the voltages induced on three typical cable routes inside the model was determined. The influence of the lightning current waveshape, point-of-strike, bonding of the cable routes, and bridging of an expansion joint in the middle of the building on these quantities was studied.
KW  - Blitzschlag
KW  - Elektromagnetischer Schutzschild
KW  - Stahlbeton
KW  - Maßstabsgetreues Modell
KW  - Lightning
KW  - electromagnetic shielding
KW  - reinforced concrete
KW  - scaled model
Y1  - 2004
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Betko, J.
A1  - Morvic, M.
A1  - Novak, J.
T1  - Magnetoresistance in low-temperature grown molecular-beam epitaxial GaAs. Betko, J.; Morvic, M.; Novak, J.; Förster, A.; Kordos, P.
JF  - Journal of Applied Physics. 86 (1999), H. 11
Y1  - 1999
SN  - 1089-7550
SP  - 6243
EP  - 6248
ER  - 
TY  - JOUR
A1  - Bechstedt, U.
A1  - Haas, H.
A1  - Hacker, U.
A1  - Hardt, Arno
A1  - Henn, K.
A1  - Martin, S.
A1  - Wimmer, J.
T1  - Magnets for the German Spallation Source SNQ
JF  - IEEE transactions on nuclear science. Vol. 32, iss. 5
Y1  - 1985
SN  - 1558-1578 (E-Journal); 0018-9499 (Print)
SP  - 3631
EP  - 3633
ER  - 
TY  - RPRT
A1  - Dielmann, Klaus-Peter
A1  - Ertl, Karl-Heinz
T1  - MAK-Energie: Reinigung und energetische Verwertung von Klärgas durch den Einsatz einer Mikrogasturbine gekoppelt mit einer Adsorptionskältemaschine : Abschlussbericht
Y1  - 2013
PB  - Institut NOWUM-Energy
CY  - Jülich
ER  - 
TY  - CHAP
A1  - Goldbach, Daniel
T1  - Management der funktionalen Sicherheit einer Entwicklung eines sicherheitskritischen Systems im Bereich Nutzfahrzeuge
T2  - Commercial vehicle technology 2010 : proceedings of the 1st Commercial Vehicle Technology Symposium (CVT 2010), March 16 - 18, 2010, Kaiserslautern / K. Berns ... (ed.)
Y1  - 2010
SN  - 978-3-8322-9040-5
SP  - 487
EP  - 495
PB  - Shaker
CY  - Aachen
ER  - 
TY  - GEN
A1  - Steuer-Dankert, Linda
A1  - Bernhard, Sebastian
A1  - Langolf, Jessica
A1  - Leicht-Scholten, Carmen
T1  - Managing change and acceptance of digitalization strategies - Implementing the vision of „Internet of Production“ (IoP) in existing corporate structures
T2  - Textile Impulse für die Zukunft: Aachen-Dresden-Denkendorf International Textile Conference 2022 : 1. – 2. Dezember 2022, Eurogress Aachen
N2  - The vision of the Internet of Production is to enable a new level of
crossdomain collaboration by providing semantically adequate and context-aware data from production, development & usage in real-time.
Y1  - 2022
SP  - 153
EP  - 153
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  - JOUR
A1  - Butenweg, Christoph
A1  - Marinkovic, Marko
A1  - Kubalski, Thomas
A1  - Klinkel, Sven
T1  - Masonry infilled reinforced concrete frames under  horizontal  loading
T1  - Stahlbetonrahmen mit Ausfachungen aus Mauerwerk unter horizontalen Belastungen
JF  - Mauerwerk
N2  - The behaviour of infilled reinforced concrete frames under horizontal load has been widely investigated, both experimentally and numerically. Since experimental tests represent large investments, numerical simulations offer an efficient approach for a more comprehensive analysis. When RC frames with masonry infill walls are subjected to horizontal loading, their behaviour is highly non-linear after a certain limit, which makes their analysis quite difficult. The non-linear behaviour results from the complex inelastic material properties of the concrete, infill wall and conditions at the wall-frame interface. In order to investigate this non-linear behaviour in detail, a finite element model using a micro modelling approach is developed, which is able to predict the complex non-linear behaviour resulting from the different materials and their interaction. Concrete and bricks are represented by a non-linear material model, while each reinforcement bar is represented as an individual part installed in the concrete part and behaving elasto-plastically. Each brick is modelled individually and connected taking into account the non-linearity of a brick mortar interface. The same approach is followed using two finite element software packages and the results are compared with the experimental results. The numerical models show a good agreement with the experiments in predicting the overall behaviour, but also very good matching for strength capacity and drift. The results emphasize the quality and the valuable contribution of the numerical models for use in parametric studies, which are needed for the derivation of design recommendations for infilled frame structures.
Y1  - 2016
U6  - http://dx.doi.org/10.1002/dama.201600703
SN  - 1437-1022
VL  - 20
IS  - 4
SP  - 305
EP  - 312
PB  - Ernst & Sohn
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Geisler, Simon
A1  - Pieper, Martin
T1  - Mathematik PLuS als E-Book. Kann ein E-Book zur Ingenieursmathematik alle Lerntypen ansprechen?
T2  - Das elektronische Schulbuch 2016
Y1  - 2017
SN  - 978-3-643-13475-2
SP  - 99
EP  - 111
PB  - LIT Verlag
CY  - Berlin
ER  - 
TY  - BOOK
A1  - Pieper, Martin
T1  - Mathematische Optimierung: Eine Einführung in die kontinuierliche Optimierung mit Beispielen
Y1  - 2017
SN  - 978-3-658-16975-6
U6  - http://dx.doi.org/10.1007/978-3-658-16975-6
PB  - Springer Fachmedien
CY  - Wiesbaden
ER  - 
TY  - BOOK
A1  - Budelmann, Harald
A1  - Butenweg, Christoph
ED  - Gunkler, Erhard
T1  - Mauerwerksbau: Bemessung und Konstruktion : Baustoffe, Bemessung und Ausführung, Brandschutz und Erdbeben, Nachhaltigkeit, Bewertung und Revitalisierung
Y1  - 2019
SN  - 978-3-8462-0371-2
N1  - gedruckt in der Bereichsbibliothek Bayernallee vorhanden
PB  - Bundesanzeiger Verlag
CY  - Köln
ET  - 2. überarbeitete und aktualisierte Auflage
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Bollenbeck, S.
T1  - Mauerwerksbauten
T2  - Bauwerke und Erdbeben / Konstantin Meskouris ; Klaus-G. Hinzen
Y1  - 2003
SN  - 3-528-02574-3 (Print) ; 978-3-322-96831-9 (E-Book)
U6  - http://dx.doi.org/10.1007/978-3-322-96831-9_7
SP  - 385
EP  - 397
PB  - Vieweg + Teubner
CY  - Wiesbaden
ER  - 
TY  - CHAP
A1  - Meskouris, Konstantin
A1  - Mistler, Michael
A1  - Butenweg, Christoph
T1  - Mauerwerksbauten unter Erdbebenbelastung
T2  - Numerische Methoden zur Problemlösung im konstruktiven Bauwesen : 34. Aachener Baustofftag ; 02. Februar 2006
Y1  - 2006
PB  - IBAC
CY  - Aachen
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Bollenbeck, S.
T1  - Mauerwerksbauten unter Erdbebenbelastung
T2  - Bauwerke und Erdbeben
Y1  - 2003
SN  - 3-528-02574-3
SP  - 385
EP  - 397
PB  - Vieweg
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Butenweg, Christoph
A1  - Gellert, Christoph
A1  - Meskouris, Konstantin
T1  - Mauerwerkswände unter zyklischer Schubbeanspruchung
JF  - Mauerwerk : European journal of masonry
Y1  - 2007
U6  - http://dx.doi.org/10.1002/dama.200700356
SN  - 1437-1022 (E-Journal); 1432-3427 (Print)
VL  - Volume 11
IS  - Issue 6
SP  - 356
EP  - 362
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
T1  - Measurement Techniques For Ultrafine Particles
JF  - Ultrafine aerosols. Properties and behaviour. Proceedings of the 1. International Workshop on Ultrafine Aerosols of the Sonderforschungsbereich 209 'Stoff- und Energietransport in Aerosolen' -'Mass and energy transfer in aerosols'-, held at the Univ. of Duisburg on Sept. 29, 1986
Y1  - 1986
N1  - International Workshop on Ultrafine Aerosols ; (01)
CY  - Duisburg
ER  - 
TY  - CHAP
A1  - Nierle, Elisabeth
A1  - Pieper, Martin
T1  - Measuring social impacts in engineering education to improve sustainability skills
T2  - European Society for Engineering Education (SEFI)
N2  - In times of social climate protection movements, such as Fridays for Future, the priorities of society, industry and higher education are currently changing. The consideration of sustainability challenges is increasing. In the context of sustainable development, social skills are crucial to achieving the United Nations Sustainable Development Goals (SDGs). In particular, the impact that educational activities have on people, communities and society is therefore coming to the fore. Research has shown that people with high levels of social competence are better able to manage stressful situations, maintain positive relationships and communicate effectively. They are also associated with better academic performance and career success. However, especially in engineering programs, the social pillar is underrepresented compared to the environmental and economic pillars.

In response to these changes, higher education institutions should be more aware of their social impact - from individual forms of teaching to entire modules and degree programs. To specifically determine the potential for improvement and derive resulting change for further development, we present an initial framework for social impact measurement by transferring already established approaches from the business sector to the education sector. To demonstrate the applicability, we measure the key competencies taught in undergraduate engineering programs in Germany.

The aim is to prepare the students for success in the modern world of work and their future contribution to sustainable development. Additionally, the university can include the results in its sustainability report. Our method can be applied to different teaching methods and enables their comparison.
KW  - Social impact measurement
KW  - Key competences
KW  - Sustainable engineering education
KW  - Future skills
Y1  - 2023
U6  - http://dx.doi.org/10.21427/QPR4-0T22
N1  - 51st Annual Conference of the European Society for Engineering Education (SEFI)
N1  - Corresponding Author: Elisabeth Nierle
ER  - 
TY  - JOUR
A1  - Meskouris, Konstantin
A1  - Butenweg, Christoph
A1  - Renault, Philippe
T1  - Mehrstufen-Konzept für mehr Erdbebensicherheit : ein Werkzeug für die Beurteilung der Erdbebengefährdung von Ingenieurbauwerken
JF  - Deutsches Ingenieurblatt
Y1  - 2006
SN  - 0946-2422
VL  - Band 13
IS  - Heft 6
SP  - 18
EP  - 26
ER  - 
TY  - CHAP
A1  - Pieper, Martin
A1  - Wählisch, Georg
T1  - Mehrwert von E-Learning durch fächerübergreifenden Einsatz
T2  - Teaching is Touching the Future & ePS 2016 - Kompetenzorientiertes Lehren, Lernen und Prüfen
Y1  - 2017
SN  - 978-3-946017-05-9
SP  - 193
EP  - 196
PB  - UVW Universitätsverlag Webler
CY  - Bielefeld
ER  - 
TY  - JOUR
A1  - Kern, Alexander
A1  - Zischank, Wolfgang J.
T1  - Melting effects on metal sheets and air termination wires caused by direct lightning strikes
JF  - Conference proceedings : Graz, Österreich, 25. - 29. April 1988 / Gesamtorganisation: Österr. Verb. für Elektrotechnik (ÖVE), Fachausschuß Blitzschutz ... [Red.: G. Diendorfer ...]
Y1  - 1988
SN  - 3-85133-001-3
N1  - International Conference on Lightning Protection >19, 1988, Graz> ; ICLP <19, 1988, Graz> ; Österreichischer Verband für Elektrotechnik / Fachausschuss Blitzschutz
PB  - Eigenverl. des ÖVE
CY  - Wien
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
T1  - Messverfahren zur Charakterisierung der Abscheidung luftgetragener Partikel in Filtern
JF  - Schutzmaßnahmen vor mikrobiellen Belastungen des Innenraumes / VII. Lübecker Fachtagung für Umwelthygiene. [Hrsg.:] Reinhard Keller ...
Y1  - 2003
N1  - Lübecker Fachtagung für Umwelthygiene <7, 2003, Lübeck>
SP  - 35
EP  - 61
PB  - Inst. f. Medizinische Mikrobiologie u. Hygiene d. Med. Univ.
CY  - Lübeck
ER  - 
TY  - JOUR
A1  - Schmidt, R.
A1  - Tonnesmann, A.
A1  - Förster, Arnold
A1  - Grimm, M.
A1  - Kordos, P.
A1  - Lüth, H.
T1  - Metamorphic InAlAs/InGaAs HEMT's on GaAs substrates using an InP buffer layer
JF  - 8th IEEE International Symposium on High Performance Electron Devices for Microwave and Optoelectronic Applications : EDMO 2000 ; [13 - 14 November 2000, University of Glasgow] / organised by Department of Electronics and Electrical Engineering, University of Glasgow, Glasgow Scotland. MTT/ED/AP/LEO Societies Joint Chapter, United Kingdom and Republic of Ireland Section. With technical co-sponsorship from IEEE Electron Device Society
Y1  - 2000
SN  - 0-7803-6550-X
N1  - EDMO <8, 2000, Glasgow> ; University <Glasgow> / Department of Electronics and Electrical Engineering ; IEEE catalog number 00TH8534
SP  - 95
EP  - 98
PB  - IEEE Operations Center
CY  - Piscataway, NJ
ER  - 
TY  - CHAP
A1  - Milkova, Kristina
A1  - Butenweg, Christoph
A1  - Dumova-Jovanoska, Elena
T1  - Methodology for development of seismic vulnerability curve for existing unreinforced Masonry buildings
T2  - 17th World Conference on Earthquake Engineering, Sendai, Japan, September 27 to October 2, 2021.
N2  - Seismic behavior of an existing unreinforced masonry building built pre-modern code, located in the City of Ohrid, Republic of North Macedonia has been investigated in this paper. The analyzed school building is selected as an archetype in an ongoing project named “Seismic vulnerability assessment of existing masonry structures in Republic of North Macedonia (SeismoWall)”. Two independent segments were included in this research: Seismic hazard assessment by creating a cite specific response spectra and Seismic vulnerability definition by creating a region - specific series of vulnerability curves for the chosen building topology. A reliable Seismic Hazard Assessment for a selected region is a crucial point for performing a seismic risk analysis of a characteristic building class. In that manner, a scenario – based method that incorporates together the knowledge of tectonic style of the considered region, the active fault characterization, the earth crust model and the historical seismicity named Neo Deterministic approach is used for calculation of the response spectra for the location of the building. Variations of the rupturing process are taken into account in the nucleation point of the rupture, in the rupture velocity pattern and in the istribution of the slip on the fault. The results obtained from the multiple scenarios are obtained as an envelope of the response spectra computed for the cite using the procedure Maximum Credible Seismic Input (MCSI). Capacity of the selected building has been determined by using nonlinear static analysis. MINEA software (SDA Engineering) was used for verification of the structural safety of the chosen unreinforced masonry structure. In the process of optimization of the number of samples, computational cost required in a Monte Carlo simulation is significantly reduced since the simulation is performed on a polynomial response surface function for prediction of the structural response. Performance point, found as the intersection of the capacity of the building and the spectra used, is chosen as a response parameter. Five levels of damage limit states based on the capacity curve of the building are defined in dependency on the yield displacement and the maximum displacement. Maximum likelihood estimation procedure is utilized in the process of vulnerability curves determination. As a result, region specific series of vulnerability curves for the chosen type of masonry structures are defined. The obtained probabilities of exceedance a specific damage states as a result from vulnerability curves are compared with the observed damages happened after the earthquake in July 2017 in the City of Ohrid, North Macedonia.
KW  - Masonry structures
KW  - Vulnerability Curves
KW  - Capacity Curve
KW  - Neo-Deterministic
KW  - Seismic Hazard
Y1  - 2020
N1  - Die Konferenz war ursprünglich für den 13-18 September 2020 angesetzt.
ER  - 
TY  - CHAP
A1  - Dielmann, Klaus-Peter
A1  - Peters, Bernhard
T1  - Micro Turbine Using Different Gases and Liquid Fuels
N2  - Micro turbine using different gases and liquid fuels
KW  - Gasturbine
KW  - Mikrogasturbine
KW  - Micro turbine
Y1  - 2002
ER  -