TY - BOOK
AU - Fuchs, Christian
ID - 37189
TI - Digital Ethics. Media, Communication and Society Volume Five
ER -
TY - CONF
AU - Nagel, Christof
AU - Carillo Beber, Vinicius
AU - Mayer, Bernd
AU - Köster, Christian
AU - Matzenmiller, Anton
AU - Hecht, Matthias
AU - Baumgartner, Jörg
AU - Melz, Tobias
AU - Tews, Karina
AU - Çavdar, Serkan
AU - Meschut, Gerson
ID - 42763
T2 - 23. Kolloquium: Gemeinsame Forschung in der Klebtechnik
TI - Lebensdauerprognose für Stahlklebverbindungen bei multiaxialer Belastung mit Phasenverschiebung, veränderlicher Mittelspannung und variablen Amplituden
ER -
TY - GEN
AU - Tews, Karina
AU - Teutenberg, Dominik
AU - Meschut, Gerson
ID - 42766
TI - Experimental investigation of the fatigue behavior and calculation of the service life of adhesively bonded joints
ER -
TY - CONF
AB - This paper presents a method to model monolithically integrated photonic radar transceiver (TRX) with optical local oscillator (LO) distribution in silicon germanium (SiGe) electronic photonic integrated circuits (EPICs). The model proposed approximates the behavior of the nonlinear scattering (S)-parameters and noise figure of each building block of the TRX chipset by Laplace polynomials and hyperbolic tangent functions. The modular approach of the model allows to optimize hardware components with respect to the entire TRX system, and fault identification with reduced computational effort.
The proposed method is validated using the first monolithically integrated photonic radar transceiver chipset and shows excellent agreement with the post layout simulation results and, including the photodiode (PD) bandwidth (BW) degradation, also with the measurements.
AU - Kruse, Stephan
AU - Schwabe, Tobias
AU - Kneuper, Pascal
AU - Meinecke, Marc-Michael
AU - Kurz, Heiko G.
AU - Scheytt, J. Christoph
ID - 42804
TI - Nonlinear S-Parameter Behavioral Model of a Photonic Radar Transceiver Chipset for Automotive Applications
ER -
TY - BOOK
AU - Fuchs, Christian
ID - 35896
SN - 978-3-7799-7144
TI - Der digitale Kapitalismus. Arbeit, Entfremdung und Ideologie im Informationszeitalter
ER -
TY - JOUR
AU - Göddecke, Johannes
AU - Meschut, Gerson
AU - Damm, Jannis
AU - Albiez, Matthias
AU - Ummenhofer, Thomas
AU - Kötz, Fabian
AU - Matzenmiller, Anton
ID - 42872
JF - The Journal of Adhesion
SN - 0021-8464
TI - Experimental and numerical investigation of the damping properties of adhesively bonded tubular steel joints
ER -
TY - JOUR
AB - Regularization is used in many different areas of optimization when solutions
are sought which not only minimize a given function, but also possess a certain
degree of regularity. Popular applications are image denoising, sparse
regression and machine learning. Since the choice of the regularization
parameter is crucial but often difficult, path-following methods are used to
approximate the entire regularization path, i.e., the set of all possible
solutions for all regularization parameters. Due to their nature, the
development of these methods requires structural results about the
regularization path. The goal of this article is to derive these results for
the case of a smooth objective function which is penalized by a piecewise
differentiable regularization term. We do this by treating regularization as a
multiobjective optimization problem. Our results suggest that even in this
general case, the regularization path is piecewise smooth. Moreover, our theory
allows for a classification of the nonsmooth features that occur in between
smooth parts. This is demonstrated in two applications, namely support-vector
machines and exact penalty methods.
AU - Gebken, Bennet
AU - Bieker, Katharina
AU - Peitz, Sebastian
ID - 27426
IS - 3
JF - Journal of Global Optimization
TI - On the structure of regularization paths for piecewise differentiable regularization terms
VL - 85
ER -
TY - JOUR
AU - Sherman, David A.
AU - Baumeister, Jochen
AU - Stock, Matt S.
AU - Murray, Amanda M.
AU - Bazett-Jones, David M.
AU - Norte, Grant E.
ID - 42966
JF - Medicine & Science in Sports & Exercise
KW - Physical Therapy
KW - Sports Therapy and Rehabilitation
KW - Orthopedics and Sports Medicine
SN - 1530-0315
TI - Weaker Quadriceps Corticomuscular Coherence in Individuals Following ACL Reconstruction during Force Tracing
VL - Publish Ahead of Print
ER -
TY - JOUR
AU - Büchel, Daniel
AU - Torvik, PØ
AU - Lehmann, Tim
AU - Sandbakk, Ø
AU - Baumeister, Jochen
ID - 42967
JF - Med Sci Sports Exerc
SN - 0195-9131
TI - The Mode of Endurance Exercise Influences Changes in EEG Resting State Graphs among High-Level Cross-Country Skiers.
ER -
TY - JOUR
AU - Sherman, DA
AU - Baumeister, Jochen
AU - Stock, MS
AU - Murray, AM
AU - Bazett-Jones, DM
AU - Norte, GE
ID - 42965
IS - 3
JF - Med Sci Sports Exerc
SN - 0195-9131
TI - Inhibition of Motor Planning and Response Selection after Anterior Cruciate Ligament Reconstruction.
VL - 55
ER -
TY - JOUR
AU - Alhaddad, Samer
AU - Förstner, Jens
AU - Grynko, Yevgen
ID - 43018
JF - Journal of Quantitative Spectroscopy and Radiative Transfer
KW - tet_topic_scattering
SN - 0022-4073
TI - Numerical study of light backscattering from layers of absorbing irregular particles larger than the wavelength
VL - 302
ER -
TY - CONF
AU - Mwammenywa, Ibrahim
AU - Petrov, Dmitry
AU - Holle, Philipp
AU - Hilleringmann, Ulrich
ID - 39359
T2 - 2022 International Conference on Engineering and Emerging Technologies (ICEET)
TI - LoRa Transceiver for Load Monitoring and Control System in Microgrids
ER -
TY - CHAP
AU - Fuchs, Christian
ED - Popp, Judith-Frederike
ED - Voropai, Lioudmila
ID - 38150
T2 - Adorno und die Medien: Kritik, Relevanz, Ethik
TI - Adorno and the Media in Digital Capitalism
ER -
TY - GEN
AU - Lienen, Christian
AU - Middeke, Sorel Horst
AU - Platzner, Marco
ID - 43048
TI - fpgaDDS: An Intra-FPGA Data Distribution Service for ROS 2 Robotics Applications
ER -
TY - JOUR
AB - Artificial intelligence (AI) has moved beyond the planning phase in many organisations and it is often accompanied by uncertainties and fears of job loss among employees. It is crucial to manage employees attitudes towards the deployment of an AI-based technology effectively and counteract possible resistance behaviour. We present lessons learned from an industry case where we conducted interviews with affected employees. We evaluated derived resistance to AI factors in a large-scale (N = 368) survey and found that the deployment of AI-based technologies does not differ from other IT, but that the change is perceived differently due to misguided expectations.
AU - Stieglitz, Stefan
AU - Möllmann, Nicholas R.J.
AU - Mirbabaie, Milad
AU - Hofeditz, Lennart
AU - Ross, Björn
ID - 43054
IS - 4
JF - International Journal of Management Practice
TI - Recommendations for managing AI-driven change processes: when expectations meet reality
VL - 16
ER -
TY - GEN
AU - Tiessen, Michelle
ID - 43058
TI - Zur Effektivität des europäischen Kronzeugenprogramms - Der Fall des LKW-Kartells
ER -
TY - JOUR
AU - Mistry, Aashutosh
AU - Srinivasan, Venkat
AU - Steinrück, Hans-Georg
ID - 37267
JF - Advanced Energy Materials
KW - General Materials Science
KW - Renewable Energy
KW - Sustainability and the Environment
SN - 1614-6832
TI - Characterizing Ion Transport in Electrolytes via Concentration and Velocity Profiles
VL - 13
ER -
TY - JOUR
AB - AbstractComposite materials, such as fiber reinforced polymers, become increasingly important due to their excellent mechanical and lightweight properties. In this respect, this paper reports the characterization of a unidirectional carbon fiber reinforced polymer composite material. Particularly, the mechanical behavior of the overall composite and of the individual constituents of the composite is investigated. To this end, tensile and shear tests are performed for the composite. As a result, statistics for five transversely isotropic material parameters can be established for the composite. For the description of the mechanical properties of the constituents, tensile tests for the carbon fiber as well as for the polymer matrix are carried out. In addition, the volume fraction of fibers in the matrix is determined experimentally using an ashing technique and Archimedes’ principle. For the Young’s modulus of the fiber, the Young’s modulus and transverse contraction of the matrix, as well as the volume fraction of the constituents, statistics can be concluded. The resulting mechanical properties on both scales are useful for the application and validation of different material models and homogenization methods. Finally, in order to validate the obtained properties in the future, inhomogeneous tests were performed, once a flat plate with a hole and a flat plate with semicircular notches.
AU - Penner, Eduard
AU - Caylak, Ismail
AU - Mahnken, Rolf
ID - 42165
JF - Fibers and Polymers
KW - Polymers and Plastics
KW - General Chemical Engineering
KW - General Chemistry
SN - 1229-9197
TI - Experimental Investigations of Carbon Fiber Reinforced Polymer Composites and Their Constituents to Determine Their Elastic Material Properties and Complementary Inhomogeneous Experiments with Local Strain Considerations
ER -
TY - JOUR
AU - Lenz, Peter
AU - Mahnken, Rolf
ID - 43095
JF - Composite Structures
KW - Civil and Structural Engineering
KW - Ceramics and Composites
SN - 0263-8223
TI - Non-local integral-type damage combined to mean-field homogenization methods for composites and its parallel implementation
ER -
TY - CONF
AU - Hoffmann, Max
AU - Biehler, Rolf
ED - Trigueros, Marı́a
ED - Barquero, Berta
ED - Hochmuth, Reinhard
ED - Peters, Jana
ID - 31849
KW - Teaching and learning of specific topics in university mathematics
KW - Transition to
KW - across and from university mathematics
KW - Student Teachers
KW - Geometry
KW - Congruence
KW - Double Discontinuity.
T2 - Proceedings of the Fourth Conference of the International Network for Didactic Research in University Mathematics (INDRUM 2022, 19-22 October 2022)
TI - Student Teachers ’ Knowledge of Congruence before a University Course on Geometry
ER -
TY - CONF
AU - Florensa, Ignasio
AU - Hoffmann, Max
AU - Romo Vázquez, Avenilde
AU - Zandieh, Michelle
AU - Martínez-Planell, Rafael
ED - Trigueros, Marı́a
ED - Barquero, Berta
ED - Hochmuth, Reinhard
ED - Peters, Jana
ID - 43097
T2 - Proceedings of the Fourth Conference of the International Network for Didactic Research in University Mathematics (INDRUM 2022, 19-22 October 2022)
TI - Innovations in university teaching based on mathematic education research
ER -
TY - JOUR
AU - Götte, Thorsten
AU - Kolb, Christina
AU - Scheideler, Christian
AU - Werthmann, Julian
ID - 43109
JF - Theor. Comput. Sci.
TI - Beep-and-Sleep: Message and Energy Efficient Set Cover
VL - 950
ER -
TY - GEN
AU - Süßmann, Johannes
ID - 43186
TI - Pantheon
ER -
TY - DATA
AU - Claes, Leander
AU - Webersen, Manuel
ID - 12950
TI - pyfds 0.1.6 - modular field simulation tool
ER -
TY - JOUR
AB - The achievement of a flat metasurface has realized extraordinary control over light–matter interaction at the nanoscale, enabling widespread use in imaging, holography, and biophotonics. However, three-dimensional metasurfaces with the potential to provide additional light–matter manipulation flexibility attract only little interest. Here, we demonstrate a three-dimensional metasurface scheme capable of providing dual phase control through out-of-plane plasmonic resonance of L-shape antennas. Under circularly polarized excitation at a specific wavelength, the L-shape antennas with rotating orientation angle act as spatially variant three-dimensional tilted dipoles and are able to generate desire phase delay for different polarization components. Generalized Snell's law is achieved for both in-plane and out-of-plane dipole components through arranging such L-shape antennas into arrays. These three-dimensional metasurfaces suggest a route for wavefront modulation and a variety of nanophotonic applications.
AU - Li, Tianyou
AU - Chen, Yanjie
AU - Wang, Yongtian
AU - Zentgraf, Thomas
AU - Huang, Lingling
ID - 43421
IS - 14
JF - Applied Physics Letters
KW - Physics and Astronomy (miscellaneous)
SN - 0003-6951
TI - Three-dimensional dipole momentum analog based on L-shape metasurface
VL - 122
ER -
TY - CONF
AU - Yigitbas, Enes
AU - Nowosad, Alexander
AU - Engels, Gregor
ID - 43424
T2 - Proceedings of the 19th IFIP TC13 International Conference on Human-Computer Interaction (INTERACT 2023)
TI - Supporting Construction and Architectural Visualization through BIM and AR/VR: A Systematic Literature Review
ER -
TY - CONF
AU - Demir, Caglar
AU - Ngonga Ngomo, Axel-Cyrille
ID - 43436
KW - dice enexa sail SFB-TRR 318 demir ngonga
T2 - Advances in Intelligent Data Analysis XXI: 21st International Symposium on Intelligent Data Analysis, IDA 2023, Louvain-la-Neuve, Belgium, April 12–14, 2023, Proceedings
TI - Learning Permutation-Invariant Embeddings for Description Logic Concepts
ER -
TY - JOUR
AB - Lightweight design is a common approach to reduce energy demand in the use stage of vehicles. The production of lightweight materials is usually associated with an increase in energy demand, so the environmental impacts of lightweight structures need to be assessed holistically using a life cycle assessment. To estimate the life cycle environmental impacts of a product in its developmental stage, for example, by life cycle engineering, future changes in relevant influencing factors must be considered. Prospective life cycle assessment provides methods for integrating future scenarios into life cycle assessment studies. However, approaches for integrating prospective life cycle assessment into product development are limited. The objective of this work is to provide the methodological foundation for integrating future scenarios of relevant influencing factors in the development of lightweight structures. The applicability of the novel methodology is demonstrated by a case study of a structural component in a steel, aluminium, and hybrid design. The results show that appropriate decarbonisation measures can reduce the life cycle greenhouse gas emissions by up to 95 percent until 2050. We also found that shifts in the environmentally optimal design are possible in future scenarios. Therefore, the methodology and data provided contribute to improved decision-making in product development.
AU - Ostermann, Moritz
AU - Grenz, Julian
AU - Triebus, Marcel
AU - Cerdas, Felipe
AU - Marten, Thorsten
AU - Tröster, Thomas
AU - Herrmann, Christoph
ID - 43464
IS - 8
JF - Energies
KW - Life Cycle Engineering
KW - Life Cycle Assessment
KW - Lightweight Design
KW - Prospective LCA
KW - Future-oriented LCA
KW - Energy System
KW - Material production
KW - Sustainable production
SN - 1996-1073
TI - Integrating Prospective Scenarios in Life Cycle Engineering: Case Study of Lightweight Structures
VL - 16
ER -
TY - JOUR
AU - Biehler, Rolf
AU - Liebendörfer, Michael
AU - Schmitz, A.
ID - 43504
JF - Mitteilungen der Gesellschaft für Didaktik der Mathematik
TI - Lernvideos und ihre Erstellung - Das Projekt studiVEMINTvideos
VL - 114
ER -
TY - CHAP
AU - Herzig, Bardo
ED - Aßmann, S.
ED - Ricken, N.
ID - 44049
SN - 978-3-658-30765-3
T2 - Bildung und Digitalität. Analysen - Diskurse - Perspektiven
TI - Digitalität, Mediatisierung und Bildung - Megatrends aus medienpädagogischer Perspektive
ER -
TY - JOUR
AU - Herzig, Bardo
ID - 44052
IS - 1
JF - Pädagogische Rundschau. Sackgasse oder Meilenstein? Zur Sinnhaftigkeit von Modellbildungen in der Erziehungswissenschaft
SN - 0030-9273
TI - Modellbildung und Modellnutzung in der Allgemeinen Didaktik
ER -
TY - CONF
AU - Büker, Petra
ID - 44047
TI - Kinderstärkende Pädagogik in der Grundschule im Kontext (post-)pandemischer Herausforderungen. Kennzeichen, Kritische Anfragen und Blinde Flecke. Vortrag an der Tagung: Was Resilienz stärkt. Chancen und Risiken eines immer populärer werdenden Konzepts. Pädagogische Hochschule Heidelberg.
ER -
TY - CONF
AU - Büker, Petra
AU - Herding, Jana
AU - Drexler, Leonie
ID - 44046
TI - KrafT: Bildungsdokumentation in der inklusiven Schule partizipativ gestalten. 9. Paderborner Grundschultag zum Thema: „Demokratie Lernen von Anfang an“. Online
ER -
TY - JOUR
AB - A relatively small body of research has been conducted on the near- and long-term effects of study abroad (SA) to date. This existing research suggests that SA effects on language skills tend to be volatile, while the impact on various aspects of learners’ personal, academic, and professional development may be longer-lasting. Yet, learner perspectives on the dynamics and durability of such effects, in particular in the context of short-term SA programs, remain largely unexplored. This study hence investigates the near-term impact of short-term SA programs as experienced by students within the first months and years following their sojourns. A qualitative case-study design is employed to examine the accounts of four American students of German, who studied abroad in Austria for four weeks and were interviewed repeatedly over a period of up to 40 months after their sojourns. The results suggest that, from the students’ perspective, many effects deteriorate in the near term, although the overall sojourn experience still appears influential.
Abstract in German
Nur wenige Forschungsvorhaben haben sich bislang den mittel- bis langfristigen Auswirkungen studentischer Auslandsaufenthalte gewidmet; die bisherige Datenlage deutet jedoch darauf hin, dass die Auswirkungen auf sprachliche Kompetenzen eher unbeständig sind, wohingegen die persönliche, studiums- und berufsbezogene Entwicklung der Lernenden länger von einem Auslandsaufenthalt beeinflusst wird. Die Dynamik und Beständigkeit derartiger Auswirkungen wurden jedoch kaum mit Blick auf kurze Auslandsaufenthalte (≤ acht Wochen) sowie aus der Perspektive der Studierenden erforscht, was die vorliegende Studie insbesondere hinsichtlich mittelfristiger Effekte fokussiert. Mittels eines qualitativen Fallstudiendesigns werden die Interviewdaten vier amerikanischer Deutschlernender untersucht, die sich vier Wochen in Österreich aufhielten und in einem Zeitraum von bis zu 40 Monaten nach ihrem Aufenthalt wiederholt befragt wurden. Die Ergebnisse zeigen, dass viele Auswirkungen eines solchen Aufenthalts aus studentischer Perspektive mittelfristig verblassen, auch wenn der Auslandsaufenthalt im Gesamten weiterhin als einflussreiche Erfahrung wahrgenommen wird.
AU - Müller, Mareike
ID - 44058
IS - 1
JF - Frontiers: The Interdisciplinary Journal of Study Abroad
SN - 2380-8144
TI - Near-Term Effects of Short-Term Study Abroad: A Longitudinal Examination of Learner Perceptions
VL - 35
ER -
TY - CONF
AU - Zeipert, Henning
AU - von Germeten, Christian
AU - Friesen, Olga
AU - Claes, Leander
AU - Johannesmann, Sarah
AU - Henning, Bernd
ID - 43233
T2 - Fortschritte der Akustik - DAGA 2023
TI - Investigation of change in dispersive behaviour during adhesive curing in multi-layered structures
ER -
TY - CONF
AU - Claes, Leander
ID - 43229
T2 - Fortschritte der Akustik - DAGA 2023
TI - Bestimmung der Volumenviskosität mittels akustischer Absorptionsmessung
ER -
TY - CONF
AU - Nicolai, Marcel
AU - Zeipert, Henning
AU - Lugovtsova, Yevgeniya
AU - Bulling, Jannis
AU - Johannesmann, Sarah
AU - Prager, Jens
AU - Henning, Bernd
ID - 43234
T2 - Fortschritte der Akustik - DAGA 2023
TI - Characterization of adhesion strength using guided ultrasonic waves
ER -
TY - BOOK
AB - Durch Digitalisierung und Digitalität entstehen neue Fragestellungen für die formale und non-formale Bildung. Insbesondere die Professionalisierung von Lehrkräften und Fachpersonal steht durch die Dynamik der technologischen und kulturellen Entwicklungen vor weitreichenden Herausforderungen. Der vorliegende Band beschäftigt sich mit der Frage der Professionalisierung von Grundschullehrkräften und pädagogischen Fachkräften für eine Digitale Bildung im Grundschulalter und ist auf der Grundlage des BMBF-Projekts Primat des Pädagogischen in der Digitalen Grundbildung – Grundsatzfragen und Gelingensbedingungen in der Professionalisierung von pädagogischen Akteur:innen für Kinder im Grundschulalter, P3DiG, entstanden. Im ersten Teil des Sammelbandes werden Grundlagen der Professionalisierung für eine Digitale Grundbildung dargelegt. Im zweiten Teil werden die Ergebnisse des Projekts präsentiert. Dabei werden sowohl Professionalisierungsmodelle für eine Digitale Grundbildung als auch die Ergebnisse der im Projekt durchgeführten empirischen Untersuchungen zur Digitalen Grundbildung im Grundschulalter vorgestellt. Der Band kann damit als Grundlage für die Ausarbeitung von Professionalisierungskonzepten in Hochschulen, Seminaren und Weiterbildungseinrichtungen dienen und liefert Impulse für die weitere wissenschaftliche Auseinandersetzung.
ED - Irion, Thomas
ED - Böttinger, Traugott
ED - Kammerl, Rudolf
ID - 43390
SN - 9783830946410
TI - Professionalisierung für Digitale Bildung im Grundschulalter. Ergebnisse des Forschungsprojekts P³DiG
ER -
TY - THES
AU - Badalov, Sabuhi
ID - 43829
TI - Modelling electron exchange and correlation for catalyst electronic structure simulations
ER -
TY - JOUR
AU - De, Jianbo
AU - Ma, Xuekai
AU - Yin, Fan
AU - Ren, Jiahuan
AU - Yao, Jiannian
AU - Schumacher, Stefan
AU - Liao, Qing
AU - Fu, Hongbing
AU - Malpuech, Guillaume
AU - Solnyshkov, Dmitry
ID - 36416
IS - 3
JF - Journal of the American Chemical Society (JACS)
KW - Colloid and Surface Chemistry
KW - Biochemistry
KW - General Chemistry
KW - Catalysis
SN - 0002-7863
TI - Room-Temperature Electrical Field-Enhanced Ultrafast Switch in Organic Microcavity Polariton Condensates
VL - 145
ER -
TY - JOUR
AU - Jia, Jichao
AU - Cao, Xue
AU - Ma, Xuekai
AU - De, Jianbo
AU - Yao, Jiannian
AU - Schumacher, Stefan
AU - Liao, Qing
AU - Fu, Hongbing
ID - 35160
IS - 1
JF - Nature Communications
KW - General Physics and Astronomy
KW - General Biochemistry
KW - Genetics and Molecular Biology
KW - General Chemistry
KW - Multidisciplinary
SN - 2041-1723
TI - Circularly polarized electroluminescence from a single-crystal organic microcavity light-emitting diode based on photonic spin-orbit interactions
VL - 14
ER -
TY - JOUR
AU - Rose, Hendrik
AU - Vasil'ev, A. N.
AU - Tikhonova, O. V.
AU - Meier, Torsten
AU - Sharapova, Polina
ID - 37280
IS - 1
JF - Physical Review A
SN - 2469-9926
TI - Quantum-optical excitations of semiconductor nanostructures in a microcavity using a two-band model and a single-mode quantum field
VL - 107
ER -
TY - GEN
AU - Gunasagran, Sharin Kumar
AU - Neukötter, Moritz
ID - 44100
TI - Automatisierung der Auswertung rheologischer Messungen (Studienarbeit)
ER -
TY - GEN
AU - Neukötter, Moritz
AU - Jesinghausen, Steffen
AU - Schmid, Hans-Joachim
ID - 44102
TI - Instabilities of Polymer Melt Suspensions under Uniaxial Extension (Poster)
ER -
TY - CONF
AU - Anthony, Christopher J.
AU - Yost, M
AU - Howe, A
AU - Schwab, Susanne
AU - Hassani, Sepideh
AU - Hellmich, Frank
AU - Löper, Marwin Felix
AU - Görel, Gamze
ID - 44169
TI - Examining the Measurement Invariance and Convergent Validity of the SSIS-SELb-Student in Austria and Germany. 44th Annual Conference of the International School Psychology Association (ISPA) 2023.
ER -
TY - GEN
AU - Schmelzle, Lars
AU - Mergheim, Julia
AU - Possart, Gunnar
AU - Striewe, Marius
AU - Meschut, Gerson
ID - 44182
T2 - 23. Kolloquium: Gemeinsame Forschung in der Klebtechnik
TI - Experimentelle und numerische Untersuchung des Einflusses variabler Betriebstemperaturen auf das Trag- und Versagensverhalten struktureller Klebverbindungen unter Crashbelastung
ER -
TY - CONF
AB - Abstract. In order to reduce global energy consumption in production and industry along with the associated CO2 emissions, existing resources must be used more efficiently. This includes the energy-efficient and comprehensive recycling of a wide range of metals. Especially for the production of aluminium, there is a large potential for saving energy using efficient recycling processes. With regard to the recycling of aluminium studies have shown that solid-state recycling processes are significantly more efficient considering the used energy and resources compared to the conventional, smelting-metallurgical recycling process. In this paper, the direct and energy-efficient friction-induced recycling process (FIRP) based on the conform process is further described and analysed in terms of the temperature-property relationships. For this purpose, the influence of the processing temperature on the microstructure and properties of the recycled semi-finished products is investigated using the toll system that enables an ECAP forming. Specific sections of the (in theory) infinite, recycled semi-finished product are taken and analysed at different process temperatures of the solid state recycling process. Based on these sections, the properties in terms of mechanical hardness, strength, ductility and grain size are analysed and a degressive relationship between process temperature and mechanical hardness up to a temperature of 270 °C can be shown. Applying the Hall-Petch relationship, it is analysed whether there is a correlation between the strength and the microstructure in the form of the grain size.
AU - Borgert, Thomas
AU - Homberg, Werner
ID - 44036
KW - Recycling
KW - Aluminium
KW - Friction-Induced
KW - Energy Efficiency
SN - 2474-395X
T2 - Materials Research Proceedings
TI - Analysis of temperature effect on strength and microstructure in friction induced recycling process (FIRP)
ER -
TY - CHAP
AU - Mildorf, Jarmila
AU - Ketteler, Daniel
ED - Mildorf, Jarmila
ED - Punzi, Elisabeth
ED - Singer, Christoph
ID - 37519
SN - 9780197620540
T2 - Narrative and Mental Health Today: Reimagining Theory and Practice
TI - Writing as Narrative Resource in Therapeutic Settings: Diaries, Sketches, Notes
ER -
TY - BOOK
ED - Mildorf, Jarmila
ED - Punzi, Elisabeth
ED - Singer, Christoph
ID - 37518
SN - 9780197620540
TI - Narrative and Mental Health: Reimagining Theory and Practice
ER -
TY - JOUR
AB - Die Wirtschaftlichkeit von Wärmemotoren wird maßgeblich durch die Rückführung von Wärme in Rekuperatoren beeinflusst. Beim isobaren Expansionsmotor vom Bush-Typ, einem Wärmemotor, welcher bereits mit Wärmequellen ab 60°C betrieben werden kann, steigt der thermische Wirkungsgrad durch den Einsatz von Rekuperatoren signifikant. Gleichzeitig wirken sich das Fluidvolumen des Wärmeübertragers sowie der beim Betrieb auftretende Druckverlust negativ auf den thermischen Wirkungsrad aus. In dieser Arbeit wird der Zusammenhang von Totvolumen, Druckverlust und Wärmerückgewinnung untersucht und Empfehlungen für den Betrieb von Rekuperatoren am isobaren Expansionsmotor gegeben.
AU - Mügge, Nils
AU - Kronberg, Alexander
AU - Glushenkov, Maxim
AU - Kenig, Eugeny Y.
ID - 42252
IS - 5
JF - Chemie Ingenieur Technik
KW - Isobarer Expansionsmotor
KW - Dynamische Wärmeübertragungsmodellierung
KW - Phasenwechsel
KW - dichte Arbeitsmedien
TI - Untersuchung überlagerter Effekte von Druckverlust und Totvolumen durch Rekuperation am isobaren Expansionsmotor
VL - 95
ER -