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Browsing by Subject "Experimental investigations"

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Additive manufacturing of glass: CO2-Laser glass deposition printing

Von Witzendorff, Philipp; Pohl, Leonhard; Suttmann, Oliver; Heinrich, Peter; Heinrich, Achim; Zander, Jörg; Bragard, Holger; Kaierle, Stefan (Amsterdam : Elsevier B.V., 2018)

Additive manufacturing is used in several industrial sectors where polymers and metals are established materials. Different academic studies prove that additive manufacturing methods can be applied on glass materials using ...
An experimental study on the parameters affecting the cyclic lateral response of monopiles for offshore wind turbines in sand

Frick, Dennis; Achmus, Martin (Amsterdam : Elsevier B.V., 2020)

The design of monopile foundations for offshore wind turbine structures is dominated by requirements resulting from serviceability and fatigue limit state. To fulfil these criteria, the load deflection-behaviour and therefore ...
Approaches for improving cutting processes and machine too in re-contouring

Denkena, Berend; Boess, V.; Nespor, D.; Rust, F.; Floeter, F. (Amsterdam : Elsevier, 2014)

Re-contouring in the repair process of aircraft engine blades and vanes is a crucial task. Highest demands are made on the geometrical accuracy as well as on the machined surface of the part. Complexity rises even more due ...
Carbon dioxide free production of hydrogen

Stoppel, L.; Fehling, T.; Geißler, T.; Baake, E.; Wetzel, T. (Bristol : Institute of Physics Publishing, 2017)

The present report summarizes the theoretical modelling and experimental investigation results of the study on the direct thermal methane cracking. This work is a part of the LIMTECH-Project (Liquid Metal Technologies) ...
Experimental investigation of the two-phase local heat transfer coefficients for condensation of R134a in a micro-structured plate heat exchanger

Wang, Ru; Sun, Tingyan; Polzin, Anja-Elsa; Kabelac, Stephan (Berlin ; Heidelberg : Springer, 2022)

Plate heat exchangers are widely used for two-phase heat transfer in the industrial applications, and recently more attention has been paid to the plate heat exchangers with enhanced surface due to their better heat transfer ...
Experimental investigations on the fatigue resistance of automatically welded tubular X-joints for jacket support structures

Schürmann, K.; Schaumann, P.; Pittner, A.; Rethmeier, M. (Bristol : IOP Publ., 2020)

The development within the offshore wind sector towards more powerful turbines combined with increasing water depth for new wind parks is challenging both the designer as well as the manufacturer of bottom fixed support ...
Experimental investigations on wave transmission at submerged breakwater with smooth and stepped slopes

Lokesha; Kerpen, Nils B.; Sannasiraj, S.A.; Sundar, V.; Schlurmann, Torsten (Amsterdam : Elsevier, 2015)

Submerged breakwaters are gaining more popularity as a potential coastal protection structure resulting in moderate wave transmission with significant wave energy dissipation. Submerged breakwaters are mainly adopted to ...
Fatigue behaviour of grouted connections at different ambient conditions and loading scenarios

Schaumann, Peter; Raba, Alexander; Bechtel, Anne (London : Elsevier Ltd., 2017)

Grouted connections are frequently used as structural detail of offshore wind turbines and platforms for the load transferring connection between piles and support structure. At latticed substructures this connection is ...
Local Heat Treatment in Draw Bending for Profiles of Manganese Boron Steel 22MnB5

Behrens, Bernd-Arno; Bonk, Christian; Hübner, Sven; Uhe, Johanna; Klie, Roman; Moritz, Jörn (London : Elsevier Ltd., 2017)

Due to the increasing demand for vehicles with a low fuel consumption and consequently low emissions, lightweight construction is an important task in the automotive industry. High-strength profile parts reduce the total ...
Neutron radiography for visualization of liquid metal processes: Bubbly flow for CO2 free production of Hydrogen and solidification processes in em field

Baake, E.; Fehling, T.; Musaeva, D.; Steinberg, T. (Bristol : Institute of Physics Publishing, 2017)

The paper describes the results of two experimental investigations aimed to extend the abilities of a neutron radiography to visualize two-phase processes in the electromagnetically (EM) driven melt flow. In the first ...
Nitrogen Doping Improves the Immobilization and Catalytic Effects of Co9S8 in Li-S Batteries

Liu, Yuping; Ma, Shuangying; Liu, Lifeng; Koch, Julian; Rosebrock, Marina; Li, Taoran; Bettels, Frederik; He, Tao; Pfnür, Herbert; Bigall, Nadja C.; Feldhoff, Armin; Ding, Fei; Zhang, Lin (Weinheim : Wiley-VCH, 2020)

Several critical issues, such as the shuttling effect and the sluggish reaction kinetics, exist in the design of high-performance lithium–sulfur (Li-S) batteries. Here, it is reported that nitrogen doping can simultaneously ...
Non-stationary flow around buildings during run-up of tsunami waves on a plain beach

Goseberg, Nils; Schlurmann, Torsten (Reston : American Society of Civil Engineers (ASCE), 2014)

This paper presents an experimental investigation that focuses on some predominant flow features that arise around surface mounted vertical obstacles which are exposed to a transient flow. The flow under investigation is ...
Numerical and experimental determination of cut-edge after blanking of thin steel sheet of DP1000 within use of stress based damage model

Behrens, Bernd-Arno; Bouguecha, Anas; Vucetic, Milan; Krimm, Richard; Hasselbusch, Tobias; Bonk, Christian (Amsterdam : Elsevier, 2014)

The proposed study focuses on blanking of thin steel sheets of Dogal1000DP +Z100MBO. Numerical and experimental investigations of the influence of clearance and punch speed on the cutting force and the geometry of the ...
Numerical and experimental investigations of the anisotropic transformation strains during martensitic transformation in a low alloy Cr-Mo steel 42CrMo4

Behrens, Bernd-Arno; Bouguecha, Anas; Bonk, Christian; Chugreev, Alexander (Amsterdam : Elsevier, 2017)

Hot forming as a coupled thermo-mechanical process comprises of numerous material phenomena with a corresponding impact on the material behavior during and after the forming process. Within the subsequent heat treatment, ...
Numerical and experimental investigations on an extrusion process for a newly developed ultra-high-carbon lightweight steel for the automotive industry

Behrens, Bernd-Arno; Bouguecha, Anas; Bonk, Christian; Yarcu, D.; Kazhai, M. (Bristol : Institute of Physics Publishing, 2017)

In this study the material flow of a newly developed ultra-high-carbon lightweight steel (uhc-steel) with a high amount of aluminum was investigated in an extrusion process. Cylinder compression tests were performed for ...
Phase field cohesive zone modeling for fatigue crack propagation in quasi-brittle materials

Baktheer, Abedulgader; Martínez-Pañeda, Emilio; Aldakheel, Fadi (Amsterdam [u.a.] : Elsevier Science, 2024)

The phase field method has gathered significant attention in the past decade due to its versatile applications in engineering contexts, including fatigue crack propagation modeling. Particularly, the phase field cohesive ...
Potentials of single stage induction heating for press hardening of steel blanks

Nacke, B.; Dietrich, A. (Bristol : Institute of Physics Publishing, 2018)

Due to growing challenges regarding crash-performance, CO2 emission as well as increasing demand for lightweight construction, hot metal forming of car body parts has risen to one of the most important technologies for ...
Speciation of uranium: Compilation of a thermodynamic database and its experimental evaluation using different analytical techniques

Mühr-Ebert, Elena L.; Wagner, Frank; Walther, Clemens (London : Elsevier Ltd., 2019)

Environmental hazards are caused by uranium mining legacies and enhanced radioactivity in utilized groundwater and surface water resources. Knowledge of uranium speciation in these waters is essential for predicting ...
Thermomechanical Coating Load in Dependence of Fundamental Coating Properties

Beblein, S.; Breidenstein, Bernd; Denkena, Berend; Pusch, C.; Hoche, H.; Oechsner, M. (Amsterdam : Elsevier BV, 2017)

The conventional development of a coating system for cutting tools includes a variety of test series with elaborate experimental parameter studies. In particular, experimental investigations of the cutting behavior cause ...
Winding Reinforced UHPC Sandwich Structures for Lightweight Jackets for Offshore Megastructures

Dipl, M.J.; Lohaus, L.; Markowski, J.; Lohaus, L. (Bristol : Institute of Physics Publishing, 2019)

The paper presents a new type of cross-section for truss elements in an offshore construction's sub structure framework. By combining modern materials, such as ultra-high performance concrete (UHPC) and carbon fibre ...

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