TY  - JOUR
A1  - Wollbrink, Moritz
A1  - Maslo, Semir
A1  - Zimmer, Daniel
A1  - Abbas, Karim
A1  - Arntz, Kristian
A1  - Bergs, Thomas
T1  - Clamping and substrate plate system for continuous additive build-up and post-processing of metal parts
JF  - Procedia CIRP
N2  - The manufacturing share of laser powder bed fusion (L-PBF) increases in industrial application, but still many process steps are manually operated. Additionally, it is not possible to achieve tight dimensional tolerances or low surfaces roughness. Hence, a process chain has to be set up to combine additive manufacturing (AM) with further machining technologies. To achieve a continuous workpiece flow as basis for further industrialization of L-PBF, the paper presents a novel substrate system and its application on L-PBF machines and post-processing. The substrate system consists of a zero-point clamping system and a matrix-like interface of contact pins to be substantially connected to the workpiece within the L-PBF process.
Y1  - 2020
U6  - http://dx.doi.org/10.1016/j.procir.2020.04.015
SN  - 2212-8271
VL  - 93
SP  - 108
EP  - 113
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Wang, Mao
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
T1  - Experiments on the electrochemical determination of the sulphur activities in the system copper-silver at 1200°C
JF  - Zeitschrift für Metallkunde
Y1  - 1988
SN  - 0044-3093
VL  - 79
IS  - 5
SP  - 336
EP  - 339
ER  - 
TY  - JOUR
A1  - Wang, Mao
A1  - Anik, Sabri
A1  - Frohberg, Martin G.
T1  - Thermodynamics of oxygen in the lead-antimony system at 1173 K
JF  - Erzmetall : Rohstoffgewinnung, Verarbeitung, Recycling, Umwelttechnik
Y1  - 1987
SN  - 0044-2658
VL  - 40
IS  - 6
SP  - 316
EP  - 319
ER  - 
TY  - JOUR
A1  - Ulmer, Jessica
A1  - Braun, Sebastian
A1  - Cheng, Chi-Tsun
A1  - Dowey, Steve
A1  - Wollert, Jörg
T1  - Human-Centered Gamification Framework for Manufacturing Systems
JF  - Procedia CIRP
N2  - While bringing new opportunities, the Industry 4.0 movement also imposes new challenges to the manufacturing industry and all its stakeholders. In this competitive environment, a skilled and engaged workforce is a key to success. Gamification can generate valuable feedbacks for improving employees’ engagement and performance. Currently, Gamification in workspaces focuses on computer-based assignments and training, while tasks that require manual labor are rarely considered. This research provides an overview of Enterprise Gamification approaches and evaluates the challenges. Based on that, a skill-based Gamification framework for manual tasks is proposed, and a case study in the Industry 4.0 model factory is shown.
Y1  - 2020
U6  - http://dx.doi.org/10.1016/j.procir.2020.04.076
SN  - 2212-8271
VL  - 93
SP  - 670
EP  - 675
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Ulmer, Jessica
A1  - Braun, Sebastian
A1  - Cheng, Chi-Tsun
A1  - Dowey, Steve
A1  - Wollert, Jörg
T1  - Gamification of virtual reality assembly training: Effects of a combined point and level system on motivation and training results
JF  - International Journal of Human-Computer Studies
N2  - Virtual Reality (VR) offers novel possibilities for remote training regardless of the availability of the actual equipment, the presence of specialists, and the training locations. Research shows that training environments that adapt to users' preferences and performance can promote more effective learning. However, the observed results can hardly be traced back to specific adaptive measures but the whole new training approach. This study analyzes the effects of a combined point and leveling VR-based gamification system on assembly training targeting specific training outcomes and users' motivations. The Gamified-VR-Group with 26 subjects received the gamified training, and the Non-Gamified-VR-Group with 27 subjects received the alternative without gamified elements. Both groups conducted their VR training at least three times before assembling the actual structure. The study found that a level system that gradually increases the difficulty and error probability in VR can significantly lower real-world error rates, self-corrections, and support usages. According to our study, a high error occurrence at the highest training level reduced the Gamified-VR-Group's feeling of competence compared to the Non-Gamified-VR-Group, but at the same time also led to lower error probabilities in real-life. It is concluded that a level system with a variable task difficulty should be combined with carefully balanced positive and negative feedback messages. This way, better learning results, and an improved self-evaluation can be achieved while not causing significant impacts on the participants' feeling of competence.
KW  - Gamification
KW  - Virtual reality
KW  - Assembly
KW  - User study
KW  - Level system
Y1  - 2022
U6  - http://dx.doi.org/10.1016/j.ijhcs.2022.102854
SN  - 1071-5819
VL  - 165
IS  - Art. No. 102854
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Ulmer, Jessica
A1  - Braun, Carsten
A1  - Cheng, Chi-Tsun
A1  - Dowey, Steve
A1  - Wollert, Jörg
T1  - A human factors-aware assistance system in manufacturing based on gamification and hardware modularisation
JF  - International Journal of Production Research
N2  - Assistance systems have been widely adopted in the manufacturing sector to facilitate various processes and tasks in production environments. However, existing systems are mostly equipped with rigid functional logic and do not provide individual user experiences or adapt to their capabilities. This work integrates human factors in assistance systems by adjusting the hardware and instruction presented to the workers’ cognitive and physical demands. A modular system architecture is designed accordingly, which allows a flexible component exchange according to the user and the work task. Gamification, the use of game elements in non-gaming contexts, has been further adopted in this work to provide level-based instructions and personalised feedback. The developed framework is validated by applying it to a manual workstation for industrial assembly routines.
KW  - Human factors
KW  - assistance system
KW  - gamification
KW  - adaptive systems
KW  - manufacturing
Y1  - 2023
U6  - http://dx.doi.org/10.1080/00207543.2023.2166140
SN  - 0020-7543 (Print)
SN  - 1366-588X (Online)
PB  - Taylor & Francis
ER  - 
TY  - JOUR
A1  - Starke, Günther
A1  - Kuhne, A.H.
A1  - Frassek, B.
T1  - Components for the automated GMAW process. Bestandteile des automatischen Metall-Schutzgas-Schweissverfahrens
JF  - Welding Journal. 63 (1984), H. 1
Y1  - 1984
SN  - 0043-2296
SP  - 31
EP  - 34
ER  - 
TY  - JOUR
A1  - Starke, Günther
A1  - Drews, P.
T1  - Le soudage au siecle de l'informatique
JF  - Souder. 18 (1994), H. 6
Y1  - 1994
SN  - 0246-1900
SP  - 33
EP  - 44
ER  - 
TY  - JOUR
A1  - Starke, Günther
A1  - Drews, P.
T1  - Development approaches for advanced control in automated arc welding
Y1  - 1985
N1  - Konferenz-Einzelbericht: Automation and robotisation in welding and allied processes. International conference on automation and robotisation in welding and allied processes, Strasbourg, FR, 02.09.1985-03.09.1985
SP  - 115
EP  - 124
ER  - 
TY  - JOUR
A1  - Starke, Günther
T1  - Welding in the century of information technology. Session 1
JF  - Welding in the World. 34 (1994), H. 9
Y1  - 1994
SN  - 0043-2288
SP  - 1
EP  - 20
ER  - 
TY  - JOUR
A1  - Seiler, Friedrich
A1  - Pichler, Alexander
A1  - Pfaff, Raphael
A1  - Srulijes, Julio
T1  - Novel processing tools for automated doppler picture velocimetry (DPV) evaluation
JF  - Journal of visualization
Y1  - 2009
SN  - 1343-8875
VL  - Vol. 12
IS  - Iss. 4
SP  - 323
EP  - 337
ER  - 
TY  - JOUR
A1  - Schwarz, Alexander
A1  - Gebhardt, Andreas
A1  - Schleser, Markus
A1  - Popoola, Patricia
T1  - New Welding Joint Geometries Manufactured by Powder Bed Fusion from 316L
JF  - Materials Performance and Characterization 8
Y1  - 2019
U6  - http://dx.doi.org/10.1520/MPC20180096
SN  - 2379-1365
IS  - in press
ER  - 
TY  - JOUR
A1  - Schleser, Markus
A1  - Walk-Lauffer, Bernd
A1  - Raupach, Michael
A1  - Dilthey, Ulrich
T1  - Application of polymers for textile-reinforced concrete
JF  - Journal of materials in civil engineering : properties, applications, durability
Y1  - 2006
SN  - 0899-1561
VL  - 18
IS  - 5
SP  - 670
EP  - 676
ER  - 
TY  - JOUR
A1  - Scheidweiler, Robert
A1  - Triesch, Eberhard
T1  - A note on the duality between matchings and vertex covers in balanced hypergraphs
JF  - Journal of Combinatorial Optimization
N2  - We present a new Min-Max theorem for an optimization problem closely connected to matchings and vertex covers in balanced hypergraphs. The result generalizes Kőnig’s Theorem (Berge and Las Vergnas in Ann N Y Acad Sci 175:32–40, 1970; Fulkerson et al. in Math Progr Study 1:120–132, 1974) and Hall’s Theorem (Conforti et al. in Combinatorica 16:325–329, 1996) for balanced hypergraphs.
KW  - Hall’s Theorem
KW  - Koenig’s Theorem
KW  - Duality
KW  - Balanced hypergraph
KW  - Hypergraph
KW  - Vertex cover
KW  - Matching
Y1  - 2016
U6  - http://dx.doi.org/10.1007/s10878-015-9887-5
SN  - 1573-2886
N1  - Lehrstuhl II für Mathematik RWTH Aachen
VL  - 32
IS  - 2
SP  - 639
EP  - 644
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Roesner, Andreas
A1  - Scheik, Sven
A1  - Olowinsky, Alexander
A1  - Gillner, Arnold
A1  - Reisgen, Uwe
A1  - Schleser, Markus
T1  - Laser assisted joining of plastic metal hybrids
JF  - Lasers in manufacturing 2011 : proceedings of the sixth International WLT Conference on Lasers in Manufacturing, Munich, May 23 - 26 2011. (Physics procedia ; Vol. 12 (2011), Part B)
Y1  - 2011
SN  - 1875-3892 (E-Journal); 1875-3884 (Print)
SP  - 370
EP  - 377
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Roesner, Andreas
A1  - Scheik, Sven
A1  - Olowinsky, Alexander
A1  - Gillner, Arnold
A1  - Propawe, Reinhart
A1  - Schleser, Markus
A1  - Reisgen, Uwe
T1  - Innovative approach of joining hybrid components
JF  - Journal of laser applications
Y1  - 2011
SN  - 1042-346X
VL  - Vol. 23
IS  - Iss. 3
SP  - 32007
PB  - Laser Institute of America
CY  - Orlando, Fla.
ER  - 
TY  - JOUR
A1  - Rieper, Harald
A1  - Gebhardt, Andreas
A1  - Stucker, Brent
T1  - Selective Laser Melting of the Eutectic Silver-Copper Alloy Ag 28 wt % Cu
JF  - RTejournal - Forum für Rapid Technologie
N2  - The aim of this work was to perform a detailed investigation of the use of Selective Laser Melting (SLM) technology to process eutectic silver-copper alloy Ag 28 wt. % Cu (also called AgCu28). The processing occurred with a Realizer SLM 50 desktop machine. The powder analysis (SEM-topography, EDX, particle distribution) was reported as well as the absorption rates for the near-infrared (NIR) spectrum. Microscope imaging showed the surface topography of the manufactured parts. Furthermore, microsections were conducted for the analysis of porosity. The Design of Experiments approach used the response surface method in order to model the statistical relationship between laser power, spot distance and pulse time.
KW  - SLM
KW  - Response Surface Method
KW  - Porositat
KW  - Eutectic Silver Copper alloy
KW  - Additive Manufacturing
Y1  - 2016
U6  - http://nbn-resolving.de/urn/resolver.pl?nbn:de:0009-2-44141
SN  - 1614-0923
VL  - 13
ER  - 
TY  - JOUR
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Mokrov, Oleg
A1  - Zabirov, Alexander
A1  - Füssel, Uwe
A1  - Schnick, Michael
A1  - Hertel, Martin
A1  - Jaeckel, Sebastian
T1  - Modelling and visualisation of the GMA process
JF  - Welding and Cutting
Y1  - 2012
SN  - 1612-3433
VL  - 11
IS  - 4
SP  - 242
EP  - 249
PB  - DVS Verlag
CY  - Düsseldorf
ER  - 
TY  - JOUR
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Mokrov, Oleg
A1  - Zabirov, Alexander
T1  - Virtual welding equipment for simulation of GMAW processes with integration of power source regulation
JF  - Frontiers of materials science
Y1  - 2011
SN  - 2095-0268 (E-Journal); 2095-025X (Print)
VL  - Vol. 5
IS  - Iss. 2
SP  - 79
EP  - 89
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Mokrov, Oleg
A1  - Ahmed, Essam
T1  - Statistical modeling of laser welding of DP/TRIP steel sheets
JF  - Optics and laser technology
N2  - In this research work, a statistical analysis of the CO2 laser beam welding of dual phase (DP600)/transformation induced plasticity (TRIP700) steel sheets was done using response surface methodology. The analysis considered the effect of laser power (2–2.2 kW), welding speed (40–50 mm/s) and focus position (−1 to 0 mm) on the heat input, the weld bead geometry, uniaxial tensile strength, formability limited dome height and welding operation cost. The experimental design was based on Box–Behnken design using linear and quadratic polynomial equations for predicting the mathematical models. The results indicate that the proposed models predict the responses adequately within the limits of welding parameters being used and the welding speed is the most significant parameter during the welding process.
Y1  - 2012
U6  - http://dx.doi.org/10.1016/j.optlastec.2011.05.025
SN  - 1879-2545 (E-Journal); 0030-3992 (Print); 0308-4280 (Print)
VL  - 44
IS  - 1
SP  - 92
EP  - 101
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Mokrov, Oleg
A1  - Ahmed, Essam
T1  - Optimization of laser welding of DP/TRIP steel sheets using statistical approach
JF  - Optics and laser technology
N2  - Generally, the quality of a weld joint is directly influenced by the welding input parameter settings. Selection of proper process parameters is important to obtain the desired weld bead profile and quality. In this research work, numerical and graphical optimization techniques of the CO2 laser beam welding of dual phase (DP600)/transformation induced plasticity (TRIP700) steel sheets were carried out using response surface methodology (RSM) based on Box–Behnken design. The procedure was established to improve the weld quality, increase the productivity and minimize the total operation cost by considering the welding parameters range of laser power (2–2.2 kW), welding speed (40–50 mm/s) and focus position (−1 to 0 mm). It was found that, RSM can be considered as a powerful tool in experimental welding optimization, even when the experimenter does not have a model for the process. Strong, efficient and low cost weld joints could be achieved using the optimum welding conditions.
Y1  - 2012
U6  - http://dx.doi.org/10.1016/j.optlastec.2011.06.028
SN  - 1879-2545 (E-Journal); 0030-3992 (Print); 0308-4280 (Print)
VL  - 44
IS  - 1
SP  - 255
EP  - 262
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Mokrov, Oleg
A1  - Ahmed, Essam
T1  - Numerical and experimental investigation of tensile behavior of laser beam welded TRIP700 steel
JF  - ISIJ international
Y1  - 2011
SN  - 1347-5460 (E-Journal); 0915-1559 (Print)
VL  - Vol. 51
IS  - No. 3
SP  - 429
EP  - 434
PB  - ISIJ
CY  - Tōkyō
ER  - 
TY  - JOUR
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Mokrov, Oleg
A1  - Ahmed, Essam
T1  - Uni- and bi-axial deformation behavior of laser welded advanced high strength steel sheets
JF  - Journal of materials processing technology
N2  - Bead-on-plate butt joints of 2.5 mm hot rolled DP600/DP600 and 1.2 mm cold rolled TRIP700/TRIP700 steel sheets were performed using 6 kW CO2 laser beam welding. The welding speed ranged from 1.5 to 3.0 and from 2.1 to 3.9 m/min in DP/DP and TRIP/TRIP steel weldments respectively. A top surface helium gas was used as a shielding gas at a flow rate of 20 l/min. Metallographic examinations and transverse tensile testing (DIN EN 895: 1995) were carried out to characterize the weldments. The formability of base metals and weldments were investigated by standard Erichsen test (DIN EN ISO 20482). It was found that the uniaxial plastic behavior of both DP600 and TRIP700 base metals was in agreement with Swift and modified Mecking–Kocks models respectively. In a perpendicular tensile test to the weld line, all specimens were fractured at the base metal however the strengths were somewhat higher than those of base metal. There was a significant reduction in formability caused by welding of both DP/DP and TRIP/TRIP steel weldments and the formability has been improved with the increase of the welding speed.
Y1  - 2010
U6  - http://dx.doi.org/http10.1016/j.jmatprotec.2010.08.003
SN  - 0924-0136
VL  - 210
IS  - 15
SP  - 2188
EP  - 2196
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Mokrov, Oleg
A1  - Ahmed, Essam
T1  - Shielding gas influences on laser weldability of tailored blanks of advanced automotive steels
JF  - Applied surface science
N2  - The effects of shielding gas types and flow rates on CO2 laser weldability of DP600/TRIP700 steel sheets were studied in this work. The evaluated shielding gases were helium (He), argon (Ar) and different mixtures of He and Ar. Weld penetration, tensile strength and formability (Erichsen test) of laser welds were found to be strongly dependent upon the shielding gas types. The ability of shielding gas in removing plasma plume and thus increasing weld penetration is believed to be closely related to ionization potential and atomic weight which determine the period of plasma formation and disappearance. It was found that the higher helium shielding gas flow rate, the deeper weld penetration and the lower weld width.
Y1  - 2010
U6  - http://dx.doi.org/10.1016/j.apsusc.2010.08.042
SN  - 0169-4332 (E-Journal); 0169-4332 (Print)
VL  - 257
IS  - 5
SP  - 1401
EP  - 1406
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Abdurakhmanov, Aydemir
A1  - Gumenyuk, Andrey
T1  - Measuring of plasma properties induced by non-vacuum electron beam welding
JF  - Physics of plasma
N2  - Electron beam plasma measurement was realised by means of DIABEAM system invented by ISF RWTH Aachen. The Langmuir probe method is used for measurement. The relative simplicity of the method and the possibility of dispersion of high power on the probe allow its application for the investigation of high-power electron beams. The key element of the method is a rotating thin tungsten wire, which intersects the beam transversely on its axis and collects part of the current by itself. The signals, which are registered in the DIABEAM as a voltage, were taken in the form of amplitude. The conversion of the probe current into the distribution along the beam radius was realised using the Abel’s method. A voltage-current characteristic was built for the beam current. The local electron density as well as the electron temperature, the floating potential and the plasma potential were measured and calculated by means of this characteristic.
Y1  - 2012
U6  - http://dx.doi.org/10.1063/1.3675874
SN  - 1089-7674 (E-Journal); 1070-664X (Print)
VL  - 19
IS  - 1
SP  - 1
EP  - 7
PB  - AIP Publishing
CY  - Melville, NY
ER  - 
TY  - JOUR
A1  - Reisgen, Uwe
A1  - Olschok, Simon
A1  - Jakobs, Stefan
A1  - Schleser, Markus
A1  - Mokrov, Oleg
A1  - Rossiter, Eduardo
T1  - Laser beam submerged arc hybrid welding
JF  - Physics procedia
N2  - The laser beam-submerged arc hybrid welding method originates from the knowledge that, with increasing penetration depth, the laser beam process has a tendency to pore formation in the lower weld regions. The coupling with the energy-efficient submerged-arc process improves degassing and reduces the tendency to pore formation. The high deposition rate of the SA process in combination with the laser beam process offers, providing the appropriate choice of weld preparation, the possibility of welding plates with a thickness larger than 20° mm in a single pass, and also of welding thicker plates with the double-sided single pass technique.
Y1  - 2012
U6  - http://dx.doi.org/10.1016/j.phpro.2012.10.016
SN  - 1875-3892
N1  - Part of special issue "Laser assisted net shape engineering 7 (LANE 2012)"
VL  - 39
SP  - 75
EP  - 83
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Ramazani, Ali
A1  - Li, Yang
A1  - Mukherjee, Krishnendu
A1  - Prahl, Ulrich
A1  - Bleck, Wolfgang
A1  - Abdurakhmanov, Aydemir
A1  - Schleser, Markus
A1  - Reisgen, Uwe
T1  - Microstructure evolution simulation in hot rolled DP600 steel during gas metal arc welding
JF  - Computational materials science
Y1  - 2013
SN  - 1879-0801 (E-Book); 0927-0256 (Print)
VL  - Vol. 68
SP  - 107
EP  - 116
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Raffeis, Iris
A1  - Adjei-Kyeremeh, Frank
A1  - Vroomen, Uwe
A1  - Westhoff, Elmar
A1  - Bremen, Sebastian
A1  - Hohoi, Alexandru
A1  - Bührig-Polaczek, Andreas
T1  - Qualification of a Ni-Cu alloy for the laser powder bed fusion process (LPBF): Its microstructure and mechanical properties
JF  - Applied Sciences
N2  - As researchers continue to seek the expansion of the material base for additive manufacturing, there is a need to focus attention on the Ni–Cu group of alloys which conventionally has wide industrial applications. In this work, the G-NiCu30Nb casting alloy, a variant of the Monel family of alloys with Nb and high Si content is, for the first time, processed via the laser powder bed fusion process (LPBF). Being novel to the LPBF processes, optimum LPBF parameters were determined, and hardness and tensile tests were performed in as-built conditions and after heat treatment at 1000 °C. Microstructures of the as-cast and the as-built condition were compared. Highly dense samples (99.8% density) were achieved after varying hatch distance (80 µm and 140 µm) with scanning speed (550 mm/s–1500 mm/s). There was no significant difference in microhardness between varied hatch distance print sets. Microhardness of the as-built condition (247 HV0.2) exceeded the as-cast microhardness (179 HV0.2.). Tensile specimens built in vertical (V) and horizontal (H) orientations revealed degrees of anisotropy and were superior to conventionally reported figures. Post heat treatment increased ductility from 20% to 31% (V), as well as from 16% to 25% (H), while ultimate tensile strength (UTS) and yield strength (YS) were considerably reduced.
Y1  - 2020
U6  - http://dx.doi.org/10.3390/app10103401
SN  - 2076-3417
N1  - Special Issue Materials Development by Additive Manufacturing Techniques
VL  - 10
IS  - Art. 3401
SP  - 1
EP  - 15
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Pfaff, Raphael
A1  - Enning, Manfred
A1  - Sutter, Stefan
T1  - A risk‑based approach to automatic brake tests for rail freight service: incident analysis and realisation concept
JF  - SN Applied Sciences
N2  - This study reviews the practice of brake tests in freight railways, which is time consuming and not suitable to detect certain failure types. Public incident reports are analysed to derive a reasonable brake test hardware and communication architecture, which aims to provide automatic brake tests at lower cost than current solutions. The proposed solutions relies exclusively on brake pipe and brake cylinder pressure sensors, a brake release position switch as well as radio communication via standard protocols. The approach is embedded in the Wagon 4.0 concept, which is a holistic approach to a smart freight wagon. The reduction of manual processes yields a strong incentive due to high savings in manual
labour and increased productivity.
KW  - Freight rail
KW  - Brake test
KW  - Incident analysis
KW  - Train composition
KW  - Brake set-up
Y1  - 2022
U6  - http://dx.doi.org/10.1007/s42452-022-05007-x
SN  - 2523-3971
N1  - Corresponding author: Raphael Pfaff
VL  - 4
IS  - 4
SP  - 1
EP  - 14
PB  - Springer
CY  - Cham
ER  - 
TY  - JOUR
A1  - Pfaff, Raphael
A1  - Burnham, Keith J.
T1  - On abstraction and interpretability: a behavioural perspective
JF  - Systems Science
Y1  - 2009
SN  - 0137-1223
VL  - Vol. 35
IS  - Iss. 2
SP  - 19
EP  - 26
ER  - 
TY  - JOUR
A1  - Pfaff, Raphael
T1  - Braking distance prediction for vehicle consist in low-speed on-sight operation: a Monte Carlo approach
JF  - Railway Engineering Science
N2  - The first and last mile of a railway journey, in both freight and transit applications, constitutes a high effort and is either non-productive (e.g. in the case of depot operations) or highly inefficient (e.g. in industrial railways). These parts are typically managed on-sight, i.e. with no signalling and train protection systems ensuring the freedom of movement. This is possible due to the rather short braking distances of individual vehicles and shunting consists. The present article analyses the braking behaviour of such shunting units. For this purpose, a dedicated model is developed. It is calibrated on published results of brake tests and validated against a high-definition model for low-speed applications. Based on this model, multiple simulations are executed to obtain a Monte Carlo simulation of the resulting braking distances. Based on the distribution properties and established safety levels, the risk of exceeding certain braking distances is evaluated and maximum braking distances are derived. Together with certain parameters of the system, these can serve in the design and safety assessment of driver assistance systems and automation of these processes.
KW  - Freight rail
KW  - Shunting
KW  - Braking curves
KW  - Brake set-up
KW  - Driver assistance system
Y1  - 2023
U6  - http://dx.doi.org/10.1007/s40534-023-00303-7
SN  - 2662-4753 (eISSN)
SN  - 2662-4745 (Print)
VL  - 31
IS  - 2
SP  - 135
EP  - 144
PB  - SpringerOpen
ER  - 
TY  - JOUR
A1  - Panc, Nicolae
A1  - Contiu, Glad
A1  - Bocanet, Vlad
A1  - Thurn, Laura
A1  - Sabau, Emilia
T1  - The influence of cutting technology on surface wear hardness
JF  - Academic Journal of Manufacturing Engineering
Y1  - 2019
SN  - 1583-7904
VL  - 17
IS  - 3
SP  - 205
EP  - 210
ER  - 
TY  - JOUR
A1  - Mukherjee, Krishnendu
A1  - Ramazani, Ali
A1  - Yang, Li
A1  - Prahl, Ulrich
A1  - Bleck, Wolfgang
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Abdurakhmanov, Aydemir
T1  - Characterization of gas metal arc welded hot rolled DP600 steel
JF  - Steel research international
Y1  - 2011
SN  - 1869-344X (E-Book); 1611-3683 (Print)
VL  - Vol. 82
IS  - Iss. 12
SP  - 1408
EP  - 1416
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Mukherjee, Krishnendu
A1  - Prahl, Ulrich
A1  - Bleck, Wolfgang
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Abdurakhmanov, Aydemir
T1  - Characterization and modelling techniques for gas metal arc welding of DP 600 sheet steels
JF  - Materialwissenschaft und Werkstofftechnik
N2  - The objectives of the present work are to characterize the Gas Metal Arc Welding process of DP 600 sheet steel and to summarize the modelling techniques. The time-temperature evolution during the welding cycle was measured experimentally and modelled with the softwaretool SimWeld. To model the phase transformations during the welding cycle dilatometer tests were done to quantify the parameters for phase field modelling by MICRESS®. The important input parameters are interface mobility, nucleation density, etc. A contribution was made to include austenite to bainite transformation in MICRESS®. This is useful to predict the microstructure in the fast cooling segments. The phase transformation model is capable to predict the microstructure along the heating and cooling cycles of welding. Tensile tests have shown the evidence of failure at the heat affected zone, which has the ferrite-tempered martensite microstructure.
Y1  - 2010
U6  - http://dx.doi.org/10.1002/mawe.201000692
SN  - 1521-4052
VL  - 41
IS  - 11
SP  - 972
EP  - 983
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Michaux, F.
A1  - Mattern, P.
A1  - Kallweit, Stephan
T1  - RoboPIV: how robotics enable PIV on a large industrial scale
JF  - Measurement Science and Technology
N2  - This work demonstrates how the interaction between particle image velocimetry (PIV) and robotics can massively increase measurement efficiency. The interdisciplinary approach is shown using the complex example of an automated, large scale, industrial environment: a typical automotive wind tunnel application. Both the high degree of flexibility in choosing the measurement region and the complete automation of stereo PIV measurements are presented. The setup consists of a combination of three robots, individually used as a 6D traversing unit for the laser illumination system as well as for each of the two cameras. Synchronised movements in the same reference frame are realised through a master-slave setup with a single interface to the user. By integrating the interface into the standard wind tunnel management system, a single measurement plane or a predefined sequence of several planes can be requested through a single trigger event, providing the resulting vector fields within minutes.

In this paper, a brief overview on the demands of large scale industrial PIV and the existing solutions is given. Afterwards, the concept of RoboPIV is introduced as a new approach. In a first step, the usability of a selection of commercially available robot arms is analysed. The challenges of pose uncertainty and importance of absolute accuracy are demonstrated through comparative measurements, explaining the individual pros and cons of the analysed systems. Subsequently, the advantage of integrating RoboPIV directly into the existing wind tunnel management system is shown on basis of a typical measurement sequence. In a final step, a practical measurement procedure, including post-processing, is given by using real data and results. Ultimately, the benefits of high automation are demonstrated, leading to a drastic reduction in necessary measurement time compared to non-automated systems, thus massively increasing the efficiency of PIV measurements.
Y1  - 2018
U6  - http://dx.doi.org/10.1088/1361-6501/aab5c1
SN  - 1361-6501
N1  - Special Section on the 12th International Symposium on Particle Image Velocimetry (PIV 2017)
VL  - 29
IS  - 7
SP  - 074009
PB  - IOP
CY  - Bristol
ER  - 
TY  - JOUR
A1  - Mautner, Karin
A1  - Forster, Ralf
A1  - Kornhuber, Ralf
A1  - Sander, Oliver
T1  - Fast and Reliable Pricing of American Options with Local Volatility / Forster, Ralf ; Kornhuber, Ralf ; Mautner, Karin ; Sander, Oliver
JF  - Domain Decomposition Methods in Science and Engineering XVII
Y1  - 2008
SN  - 978-3-540-75198-4
N1  - Lecture Notes in Computational Sciece and Engineering ; 60
SP  - 383
EP  - 390
ER  - 
TY  - JOUR
A1  - Luft, Angela
A1  - Luft, Nils
A1  - Arntz, Kristian
T1  - A basic description logic for service-oriented architecture in factory planning and operational control in the age of industry 4.0
JF  - Applied Sciences
N2  - Manufacturing companies across multiple industries face an increasingly dynamic and unpredictable environment. This development can be seen on both the market and supply side. To respond to these challenges, manufacturing companies must implement smart manufacturing systems and become more flexible and agile. The flexibility in operational planning regarding the scheduling and sequencing of customer orders needs to be increased and new structures must be implemented in manufacturing systems’ fundamental design as they constitute much of the operational flexibility available. To this end, smart and more flexible solutions for production planning and control (PPC) are developed. However, scheduling or sequencing is often only considered isolated in a predefined stable environment. Moreover, their orientation on the fundamental logic of the existing IT solutions and their applicability in a dynamic environment is limited. This paper presents a conceptual model for a task-based description logic that can be applied to factory planning, technology planning, and operational control. By using service-oriented architectures, the goal is to generate smart manufacturing systems. The logic is designed to allow for easy and automated maintenance. It is compatible with the existing resource and process allocation logic across operational and strategic factory and production planning.
KW  - manufacturing data model
KW  - production planning and control
KW  - manufacturing flexibility
KW  - technology planning
KW  - SOA
KW  - service-oriented architectures
KW  - factory planning
Y1  - 2023
U6  - http://dx.doi.org/10.3390/app13137610
N1  - This article belongs to the Special Issue "Smart Industrial System"
VL  - 2023
IS  - 13
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Luft, Angela
A1  - Bremen, Sebastian
A1  - Luft, Nils
T1  - A cost/benefit and flexibility evaluation framework for additive technologies in strategic factory planning
JF  - Processes
N2  - There is a growing demand for more flexibility in manufacturing to counter the volatility and unpredictability of the markets and provide more individualization for customers. However, the design and implementation of flexibility within manufacturing systems are costly and only economically viable if applicable to actual demand fluctuations. To this end, companies are considering additive manufacturing (AM) to make production more flexible. This paper develops a conceptual model for the impact quantification of AM on volume and mix flexibility within production systems in the early stages of the factory-planning process. Together with the model, an application guideline is presented to help planners with the flexibility quantification and the factory design process. Following the development of the model and guideline, a case study is presented to indicate the potential impact additive technologies can have on manufacturing flexibility Within the case study, various scenarios with different production system configurations and production programs are analyzed, and the impact of the additive technologies on volume and mix flexibility is calculated. This work will allow factory planners to determine the potential impacts of AM on manufacturing flexibility in an early planning stage and design their production systems accordingly.
KW  - additive manufacturing
KW  - factory planning
KW  - manufacturing flexibility
KW  - volume flexibility
KW  - mix flexibility
Y1  - 2023
U6  - http://dx.doi.org/10.3390/pr11071968
SN  - 2227-9717
VL  - 11
IS  - 7
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Leidinger, Rafael
A1  - Noisten, Thomas
A1  - Wollert, Jörg
T1  - Realtime automation networks in moVing industrial environments
JF  - Journal of systemics, cybernetics and informatics
N2  - The radio-based wireless data communication has made the realization of new technical solutions possible in many fields of the automation technology (AT). For about ten years, a constant disproportionate growth of wireless technologies can be observed in the automation technology.
However, it shows that especially for the AT, conventional technologies of office automation are unsuitable and/or not manageable. The employment of mobile services in the industrial automation technology has the potential of significant cost and time savings. This leads to an increased productivity in various fields of the AT, for example in the factory and process automation or in production logistics. In this paper technologies and solutions for an automation-suited supply of mobile wireless services will be introduced under the criteria of real time suitability, IT-security and service orientation.
Emphasis will be put on the investigation and development of wireless convergence layers for different radio technologies, on the central provision of support services for an easy-to-use, central, backup enabled management of combined wired / wireless networks and on the study on integrability in a Profinet real-time Ethernet network.
KW  - PROFINET
KW  - Distributed Control Systems,
KW  - Industrial Automation Technology,
KW  - 802.15.4
KW  - Bluetooth
KW  - Wireless Networks
Y1  - 2012
SN  - 1690-4532
VL  - Vol. 10
IS  - Iss. 2
SP  - 52
EP  - 56
PB  - IIIC
CY  - Orlando
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Schulz, C.
A1  - Ehrfeld, W.
A1  - Erbel, R.
T1  - LIGA Fabricated Microsystems for Medical and Related Applications. Schulz, C.; Ehrfeld, W.; Erbel, R.; Kämper, K.-P.; Koch, L.; Lehr, H.; Roth, T.
JF  - 3-Day Course on Microengineering in Medicine and Biology and its Applications to Minimally Invasive Techniques for Therapy and Medical Diagnosis : EURO-BME 94; October 5, 6, and 7, 1994, Swiss Federal Institute of Technology, EPFL, Lausanne, Switzerland / [the 1994 EURO-BME Microengineering in Medicine and Biology Training Course. Staff: Christian D. Depeursinge ...]
Y1  - 1994
N1  - Microengineering in Medicine and Biology Training Course 1994, Lausanne
PB  - REPRO EPFL
CY  - Lausanne
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Schmitt, W.
A1  - Wesner, D. A.
A1  - Güntherodt, G.
T1  - Thickness dependence of the spin- and angle-resolved photoemission of ultrathin, epitaxial Ni(111)/W(110) layers
JF  - Applied Physics A: Materials Science and Processing. 49 (1989), H. 6
Y1  - 1989
SN  - 1432-0630
SP  - 573
EP  - 578
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Schmitt, W.
A1  - Güntherodt, G.
A1  - Gambino, R. J.
T1  - CrO2—A New Half-Metallic Ferromagnet? Kämper, K.-P.; Schmitt, W.; Güntherodt, G.; Gambino, R. J., Ruf, R.
JF  - Physical Review Letters. 59 (1987), H. 24
Y1  - 1987
SN  - 1079-7114
SP  - 2788
EP  - 2791
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Schmitt, W.
A1  - Güntherodt, G.
T1  - The influence of adsorbates on the spin-resolved photoemission of Ni(110). Schmitt, W.; Kämper, K.-P.; Güntherodt, G.
JF  - Surface Science. 189/190 (1987)
Y1  - 1987
SN  - 0039-6028
N1  - Proceedings of the Ninth European Conference on Surface Science
SP  - 741
EP  - 507
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Schmitt, W.
A1  - Güntherodt, G.
T1  - Effect of adsorbates on the spin-polarized photoemission of itinerant ferromagnets. Schmitt, W.; Kämper, K.-P.; Güntherodt, G.
JF  - Physical Review B. 36 (1987), H. 7
Y1  - 1987
SN  - 1095-3795
SP  - 3763
EP  - 3768
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Schmitt, W.
A1  - Güntherodt, G.
T1  - Thickness dependence of the electronic structure of ultrathin, epitaxial Ni(111)/W(110) layers.
JF  - Physical Review B. 38 (1988), H. 14
Y1  - 1988
SN  - 1095-3795
SP  - 9451
EP  - 9456
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Schmitt, W.
A1  - Güntherodt, G.
T1  - Temperature and wave-vector dependence of the spin-split band structure of Ni(111) along the Γ-L line
JF  - Physical Review B. 42 (1990), H. 16
Y1  - 1990
SN  - 1095-3795
SP  - 10696
EP  - 10705
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Schmitt, W.
A1  - Güntherodt, G.
T1  - Temperature dependence of the exchange splitting of Ni along the -L line
JF  - Journal de physique. 49 (1988), H. 12. Supplement, Colloque C8
Y1  - 1988
N1  - Proceedings of the International conference on Magnetism. Part 1. ICM 88, Paris, France, Juli 25-29, 1988
SP  - 39
EP  - 40
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Picard, Antoni
A1  - Brill, Manfred
A1  - Cassel, Detlev
A1  - Jentsch, Andreas
A1  - Merten, Sabine
A1  - Rollwa, Markus
T1  - The Virtual Clean Room - a new tool in teaching MST process technologies
N2  - The Virtual Clean Room - a new tool in teaching MST process technologies University education in high-technology fields like MST is not complete without intensive laboratory sessions. Students cannot fully grasp the complexity and the special problems related to the manufacturing of microsystems without a thorough hands-on experience in a MST clean room.
KW  - Virtuelle Maschine
KW  - VM
KW  - Mikrosystemtechnik
KW  - MST
KW  - virtual clean room
Y1  - 2003
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Picard, Antoni
A1  - Brill, Manfred
A1  - Cassel, Detlef (u.a.)
T1  - The Virtual Cleanroom – a new tool in teaching MST process technologies
JF  - mst news International newsletter on micro - nano Integration (2003)
Y1  - 2003
SN  - 0948-3128
SP  - 35
EP  - 36
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Picard, A.
A1  - Schütze, A.
A1  - Wallach, D.
T1  - Adopting the Foundry Concept of Semiconductor Fabrication on Educational Schemes and the Virtual Technology Lab (VTL). Picard, A.; Kämper, K.-P.; Schütze, A.; Wallach, D.; Walter, T.
JF  - Mst-News (2006)
Y1  - 2006
SN  - 0948-3128
SP  - 15, 16
EP  - u. 35
ER  -