TY  - JOUR
A1  - Pichler, A.
A1  - George, A.
A1  - Seiler, F.
A1  - Srulijes, J.
A1  - Havermann, Marc
T1  - Doppler Picture Velocimetry (DPV) applied to hypersonics
JF  - Shock Waves [Elektronische Ressource] : 26th International Symposium on Shock Waves, Volume 1 / edited by Klaus Hannemann, Friedrich Seiler
Y1  - 2009
SN  - 978-3-540-85168-4
N1  - International Symposium on Shock Waves ; (26 ; 2007.07.15-20 ; Göttingen) ; ISSW ; (26 ; 2007.07.15-20 ; Göttingen)
SP  - 503
EP  - 508
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Philipp, Mohr
A1  - Efthimiou, Nikos
A1  - Pagano, Fiammetta
A1  - Kratochwil, Nicolaus
A1  - Pizzichemi, Marco
A1  - Tsoumpas, Charalampos
A1  - Auffray, Etiennette
A1  - Ziemons, Karl
T1  - Image reconstruction analysis for positron emission tomography with heterostructured scintillators
JF  - IEEE Transactions on Radiation and Plasma Medical Sciences
N2  - The concept of structure engineering has been proposed for exploring the next generation of radiation detectors with improved performance. A TOF-PET geometry with heterostructured scintillators with a pixel size of 3.0×3.1×15 mm3 was simulated using Monte Carlo. The heterostructures consisted of alternating layers of BGO as a dense material with high stopping power and plastic (EJ232) as a fast light emitter. The detector time resolution was calculated as a function of the deposited and shared energy in both materials on an event-by-event basis. While sensitivity was reduced to 32% for 100 μm thick plastic layers and 52% for 50 μm, the CTR distribution improved to 204±49 ps and 220±41 ps respectively, compared to 276 ps that we considered for bulk BGO. The complex distribution of timing resolutions was accounted for in the reconstruction. We divided the events into three groups based on their CTR and modeled them with different Gaussian TOF kernels. On a NEMA IQ phantom, the heterostructures had better contrast recovery in early iterations. On the other hand, BGO achieved a better contrast to noise ratio (CNR) after the 15th iteration due to the higher sensitivity. The developed simulation and reconstruction methods constitute new tools for evaluating different detector designs with complex time responses.
KW  - TOF PET
KW  - Heterostructure
KW  - Metascintillator
KW  - Multiple TOF kernels
KW  - Image Reconstruction
Y1  - 2022
U6  - https://doi.org/10.1109/TRPMS.2022.3208615
SN  - 2469-7311
SN  - 2469-7303
VL  - 7
IS  - 1
SP  - 41
EP  - 51
PB  - IEEE
CY  - New York, NY
ER  - 
TY  - CHAP
A1  - Philipp, Brauner
A1  - Brillowski, Florian Sascha
A1  - Dammers, Hannah
A1  - Königs, Peter
A1  - Kordtomeikel, Frauke Carole
A1  - Petruck, Henning
A1  - Schaar, Anne Kathrin
A1  - Schmitz, Seth
A1  - Steuer-Dankert, Linda
A1  - Mertens, Alexander
A1  - Gries, Thomas
A1  - Leicht-Scholten, Carmen
A1  - Nagel, Saskia K.
A1  - Nitsch, Verena
A1  - Schuh, Günther
A1  - Ziefle, Martina
ED  - Mrugalska, Beata
ED  - Trzcielinski, Stefan
ED  - Karwowski, Waldemar
ED  - Nicolantonio, Massimo Di
ED  - Roossi, Emilio
T1  - A research framework for human aspects in the internet of production: an intra-company perspective
T2  - Proceedings of the AHFE 2020
N2  - Digitalization in the production sector aims at transferring concepts and methods from the Internet of Things (IoT) to the industry and is, as a result, currently reshaping the production area. Besides technological progress, changes in work processes and organization are relevant for a successful implementation of the “Internet of Production” (IoP). Focusing on the labor organization and organizational procedures emphasizes to consider intra-company factors such as (user) acceptance, ethical issues, and ergonomics in the context of IoP approaches. In the scope of this paper, a research approach is presented that considers these aspects from an intra-company perspective by conducting studies on the shop floor, control level and management level of companies in the production area. Focused on four central dimensions—governance, organization, capabilities, and interfaces—this contribution presents a research framework that is focused on a systematic integration and consideration of human aspects in the realization of the IoP.
KW  - Human factors
KW  - Digitalization
KW  - Acceptance
KW  - Ethics
KW  - Human-robot collaboration
Y1  - 2020
SN  - 978-3-030-51980-3
U6  - https://doi.org/10.1007/978-3-030-51981-0_1
N1  - AHFE 2020 Virtual Conferences on Human Aspects of Advanced Manufacturing, Advanced Production Management and Process Control, and Additive Manufacturing, Modeling Systems and 3D Prototyping, July 16–20, 2020, USA
SP  - 3
EP  - 17
PB  - Springer
CY  - Cham
ER  - 
TY  - JOUR
A1  - Pham, Phu Tinh
A1  - Vu, Khoi Duc
A1  - Tran, Thanh Ngoc
A1  - Staat, Manfred
T1  - A primal-dual algorithm for shakedown analysis of elastic-plastic bounded linearly kinematic hardening bodies
Y1  - 2010
N1  - ECCM 2010, IV European Conference on Computational Mechanics, Paris, France, May 16-21, 2010.
SP  - 1
EP  - 7
ER  - 
TY  - JOUR
A1  - Pham, Phu Tinh
A1  - Staat, Manfred
T1  - FEM-based shakedown analysis of hardening structures
JF  - Asia Pacific journal on computational engineering
N2  - This paper develops a new finite element method (FEM)-based upper bound algorithm for limit and shakedown analysis of hardening structures by a direct plasticity method. The hardening model is a simple two-surface model of plasticity with a fixed bounding surface. The initial yield surface can translate inside the bounding surface, and it is bounded by one of the two equivalent conditions: (1) it always stays inside the bounding surface or (2) its centre cannot move outside the back-stress surface. The algorithm gives an effective tool to analyze the problems with a very high number of degree of freedom. Our numerical results are very close to the analytical solutions and numerical solutions in literature.
Y1  - 2014
U6  - https://doi.org/10.1186/2196-1166-1-4
SN  - 2196-1166 (E-Journal)
IS  - 1
SP  - Article No. 4
PB  - SpringerOpen
CY  - Berlin
ER  - 
TY  - CHAP
A1  - Pham, Phu Tinh
A1  - Staat, Manfred
T1  - A simplification for shakedown analysis of hardening structures
T2  - Conference proceedings of the YIC GACM 2015 : 3rd ECCOMAS Young Investigators Conference and 6th GACM Colloquium on Computational Mechanics , Aachen , Germany, 20.07.2015 - 23.07.2015 / ed.: Stefanie Elgeti ; Jaan-Willem Simon
Y1  - 2015
SP  - 1
EP  - 4
PB  - RWTH Aachen University
CY  - Aachen
ER  - 
TY  - JOUR
A1  - Pham, Phu Tinh
A1  - Staat, Manfred
T1  - An Upper Bound Algorithm for Limit and Shakedown Analysis of Bounded Linearly Kinematic Hardening Structures
JF  - Limit State of Materials and Structures : Direct Methods 2. Saxcé, Géry de (Hrsg.)
Y1  - 2013
SN  - 978-94-007-5424-9
SP  - 71
EP  - 87
PB  - Springer
CY  - Dordrecht
ER  - 
TY  - CHAP
A1  - Pham, Phu Tinh
A1  - Nguyen, Thanh Ngoc
A1  - Staat, Manfred
T1  - FEM based shakedown analysis of hardening structures
T2  - Proceedings International Conference on Advances in Computational Mechanics (ACOME)
Y1  - 2012
N1  - International Conference on Advances in Computational Mechanics (ACOME), August 14-16, 2012, Ho Chi Minh City, Vietnam
SP  - 870
EP  - 882
ER  - 
TY  - THES
A1  - Pham, Phu Tinh
T1  - Upper bound limit and shakedown analysis of elastic-plastic bounded linearly kinematic hardening structures
Y1  - 2011
N1  - Aachen, Techn. Hochsch., Diss., 2011
PB  - RWTH Aachen University
CY  - Aachen
ER  - 
TY  - CHAP
A1  - Pfundt, H.
A1  - Vogelsang, D.
A1  - Gerling, Ulrich
T1  - Calculation of the crust profile in aluminium reduction cells by thermal computer modelling
T2  - Light metals 1989 : 118th annual meeting of the Minerals, Metals and Materials Society, Las Vegas, NV, Feb. 27 - Mar. 03. 1989
Y1  - 1988
SP  - 371
EP  - 377
PB  - Minerals, Metals and Materials Soc.
CY  - Warrendale, Pa.
ER  - 
TY  - CHAP
A1  - Pfetsch, Marc E.
A1  - Abele, Eberhard
A1  - Altherr, Lena
A1  - Bölling, Christian
A1  - Brötz, Nicolas
A1  - Dietrich, Ingo
A1  - Gally, Tristan
A1  - Geßner, Felix
A1  - Groche, Peter
A1  - Hoppe, Florian
A1  - Kirchner, Eckhard
A1  - Kloberdanz, Hermann
A1  - Knoll, Maximilian
A1  - Kolvenbach, Philip
A1  - Kuttich-Meinlschmidt, Anja
A1  - Leise, Philipp
A1  - Lorenz, Ulf
A1  - Matei, Alexander
A1  - Molitor, Dirk A.
A1  - Niessen, Pia
A1  - Pelz, Peter F.
A1  - Rexer, Manuel
A1  - Schmitt, Andreas
A1  - Schmitt, Johann M.
A1  - Schulte, Fiona
A1  - Ulbrich, Stefan
A1  - Weigold, Matthias
T1  - Strategies for mastering uncertainty
T2  - Mastering uncertainty in mechanical engineering
N2  - This chapter describes three general strategies to master uncertainty in technical systems: robustness, flexibility and resilience. It builds on the previous chapters about methods to analyse and identify uncertainty and may rely on the availability of technologies for particular systems, such as active components. Robustness aims for the design of technical systems that are insensitive to anticipated uncertainties. Flexibility increases the ability of a system to work under different situations. Resilience extends this characteristic by requiring a given minimal functional performance, even after disturbances or failure of system components, and it may incorporate recovery. The three strategies are described and discussed in turn. Moreover, they are demonstrated on specific technical systems.
Y1  - 2021
SN  - 978-3-030-78353-2
U6  - https://doi.org/10.1007/978-3-030-78354-9_6
N1  - Part of the Springer Tracts in Mechanical Engineering book series (STME)
SP  - 365
EP  - 456
PB  - Springer
CY  - Cham
ER  - 
TY  - CHAP
A1  - Pfaff, Raphael
A1  - Vinsonneau, B.
A1  - Burnham, K. J.
T1  - Multiple models for nonlinear systems
T2  - Proceedings / Eigteenth International Conference on Systems Engineering : ICSE 2006 : 5 - 7 September 2006 ; [held at Coventry University, UK]
Y1  - 2006
SN  - 1-84600-013-0
SP  - 347
EP  - 352
ER  - 
TY  - CHAP
A1  - Pfaff, Raphael
A1  - Shahidi, Parham
A1  - Enning, Manfred
T1  - Connected freight rail rolling stock: a modular approach integrating sensors, actors and cyber physical systems for operational advantages and condition based maintenance
T2  - Asia-Pacific Conference of the Prognostics and Health Management Society
Y1  - 2017
N1  - Asia-Pacific Conference of the
Prognostics and Health Management Society, Jeju, Korea 2017
SP  - 1
EP  - 7
ER  - 
TY  - CHAP
A1  - Pfaff, Raphael
A1  - Schmidt, B. D.
A1  - Enning, Manfred
T1  - Towards inclusion of the freight rail  system in the industrial internet of things - Wagon 4.0
T2  - Stephenson  Conference, London, March 2017
Y1  - 2017
N1  - IMechE Stephenson Conference <2017, London, United Kingdom>
SP  - 1
EP  - 10
ER  - 
TY  - CHAP
A1  - Pfaff, Raphael
A1  - Pichler, Alexander
A1  - George, Alfred
A1  - Seiler, Friedrich
T1  - Model based image processing for flow visualisation : 16th International Conference on Systems Science, Wroclaw, Poland, September 04 - 06, 2007
T2  - PU / Institut Franco-Allemand de Recherches de Saint-Louis ; 2007, 620
Y1  - 2007
SP  - 1
EP  - 10
PB  - ISL
CY  - Saint Louis, France
ER  - 
TY  - CHAP
A1  - Pfaff, Raphael
A1  - Moshiri, Amir
A1  - Reich, Alexander
A1  - Gäbel, Markus
T1  - Modelling of the effect of sanding on the wheel-rail adhesion area
T2  - First International Conference on Rail Transportation
Y1  - 2017
N1  - 2017 ICRT;
International Conference on Rail Transportation <1, 2017, Chengdu, China>
SP  - 1
EP  - 7
ER  - 
TY  - CHAP
A1  - Pfaff, Raphael
A1  - Melcher, Karin
A1  - Franzen, Julian
T1  - Rare event simulation to optimise maintenance intervals of safety critical redundant subsystems
T2  - Proceedings of the European Conference of the PHM Society
Y1  - 2018
VL  - 4
IS  - 1
SP  - 1
EP  - 6
ER  - 
TY  - CHAP
A1  - Pfaff, Raphael
A1  - Larkowski, Tomasz
A1  - Burnham, Keith J.
T1  - An application of adaptive control in the behavioural framework
T2  - 21st International Conference on Systems Engineering (ICSEng) : 16 - 18 Aug. 2011, Las Vegas, Nevada ; proceedings
Y1  - 2011
SN  - 978-1-4577-1078-0 ; 978-0-7695-4495-3
SP  - 49
EP  - 54
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - CHAP
A1  - Pfaff, Raphael
A1  - Larkowski, Tomasz
A1  - Burnham, Keith J.
T1  - An approach to adaptive control in the behavioural framework
T2  - UKACC International Conference on Control 2010 (CONTROL 2010) : Coventry, United Kingdom, 7 - 10 September 2010 ; Vol. 2. (IET seminar digest ; 2010/004)
Y1  - 2010
SN  - 978-1-62748-119-9
SP  - 833
EP  - 838
PB  - Curran
CY  - Red Hook, NY
ER  - 
TY  - CHAP
A1  - Pfaff, Raphael
A1  - Burnham, Keith J.
T1  - On abstraction and interpretability: a behavioural perspective
T2  - 19th International Conference on Systems Engineering 2008 : ICSENG '08 : 19 - 21 Aug. 2008, University of Nevada, Las Vegas, Nevada
Y1  - 2008
SN  - 978-0-7695-3331-5 ; 978-0-7695-2719-2
SP  - 89
EP  - 94
PB  - IEEE
CY  - Piscataway, NJ
ER  -