Search Results - "Konopka, Daniel"

Hygro-mechanical short-term behaviour of selected coatings: experiments and material modelling on vapour permeability and mechanical properties by Stöcklein, Josef, Konopka, Daniel, Grajcarek, Gerald, Tietze, Oliver, Oertel, Silvia, Schulze, Andreas, Kaliske, Michael

“…Many pieces of fine art are made of wood that has been treated with coatings. Since wood is a very hygroscopic material, the moisture content strongly…”
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Transient multi-Fickian hygro-mechanical analysis of wood by Konopka, Daniel, Kaliske, Michael

“…•Mechanics and two-phase moisture diffusion coupled in monolithic solution algorithm.•Moisture dependent mechanical and hygrical material…”
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Synthesis by Spray Pyrolysis of Mesoporous NbRu y O z as Electrocatalyst Supports in Fuel Cells by Konopka, Daniel A, Pylypenko, Svitlana, Atanassov, Plamen, Ward, Timothy L

“…In this study, spray pyrolysis was used to produce two mesoporous powders, niobium oxide and niobium oxide with 12% ruthenium (by weight, metal basis, based on…”
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Platinum Supported on NbRu y O z as Electrocatalyst for Ethanol Oxidation in Acid and Alkaline Fuel Cells by Konopka, Daniel A, Li, Meng, Artyushkova, Kateryna, Marinkovic, Nebojsa, Sasaki, Kotaro, Adzic, Radoslav, Ward, Timothy L, Atanassov, Plamen

“…Platinum supported on a mixed metal oxide, NbRu y O z (8Nb:1Ru), was evaluated as an electrocatalyst for the ethanol oxidation reaction (EOR) in 0.1 M HClO4…”
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Platinum Supported on NbRuyOz as Electrocatalyst for Ethanol Oxidation in Acid and Alkaline Fuel Cells by Kotaro, S., Konopka, D.A., Li, M., Artyushkova, K., Marinkovic, N., Adzic, R., Ward, T.L., Atanassov, P.

“…Platinum supported on a mixed metal oxide, NbRu{sub y}O{sub z} (8Nb:1Ru), was evaluated as an electrocatalyst for the ethanol oxidation reaction (EOR) in 0.1 M…”
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Transient multi-F ick ian hygro-mechanical analysis of wood by Konopka, Daniel, Kaliske, Michael

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An anisotropic eigenfracture approach accounting for mixed fracture modes in wooden structures by the Representative Crack Element framework by May, Marcel, Konopka, Daniel, Storm, Johannes, Kaliske, Michael

“…Finite Element analysis of anisotropic fracture phenomena in wood is a challenging task, particularly when dealing with intricate loading scenarios and…”
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An anisotropic phase-field approach accounting for mixed fracture modes in wood structures within the Representative Crack Element framework by Supriatna, Dennie, Yin, Bo, Konopka, Daniel, Kaliske, Michael

“…Wood exhibits complex behavior since the elasticity and the fracture evolution are characterized by strongly anisotropic features. Furthermore, the fracture…”
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Hygro-mechanical long-term behaviour of spruce, pine and lime wood: parameter identification and model validation by Stöcklein, Josef, Grajcarek, Gerald, Konopka, Daniel, Kaliske, Michael

“…Lime wood, spruce and pine are investigated with regard to its hygro-mechanical long-term behaviour. Experiments are conducted for an identification of model…”
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Numerical modelling of wooden structures by Konopka, Daniel, Gebhardt, Clemens, Kaliske, Michael

“…Wooden structures are quite complex with respect to their material properties as well as to their structural response and, therefore, need to be simulated…”
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Hygro-mechanical investigations of clavichord replica at cyclic climate load: Experiments and simulations by Konopka, Daniel, Ehricht, Stefan, Kaliske, Michael

“…A long-term experiment on the load bearing structure of two identical replica of a clavichord from 1807 is carried out. One clavichord is stored in a showcase…”
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Neue numerische Simulation für alte Holzkonstruktionen by Konopka, Daniel, Stöcklein, Josef, Kaliske, Michael

“…Holz ist ein Werkstoff mit langer Tradition und breitem Anwendungsspektrum. Der Beitrag gibt einen Einblick in die Methodenentwicklung für die numerische…”
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Hygro-mechanical analysis of wood-adhesive joints by Bachtiar, Erik V., Konopka, Daniel, Schmidt, Benjamin, Niemz, Peter, Kaliske, Michael

“…•Simplified wood-adhesive joint model adapted from a cohesive element.•Implementation of mechanical behaviour together with multi-Fickian moisture transport in…”
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Hygro-mechanical numerical investigations of a wooden panel painting from “Katharinenaltar” by Lucas Cranach the Elder by Gebhardt, Clemens, Konopka, Daniel, Börner, Axel, Mäder, Michael, Kaliske, Michael

“…Hygro-mechanical phenomena induced by moisture loading of a historical wooden panel painting from the 16th century are investigated in this study. Due to…”
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Experimental and numerical analysis of moisture transport in walnut and cherry wood in radial and tangential material directions by Konopka, Daniel, Bachtiar, Erik V., Niemz, Peter, Kaliske, Michael

“…The diffusion properties of walnut (Juglans regia L.) and cherry (Prunus avium L.) wood perpendicular to the grain are presented. The wet and dry cup tests…”
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Tetramethylguanidine as an Aqueous Alkaline Electrolyte for Electrochemical Devices with Pt and Pd by Konopka, Daniel, Errico, Michael, Bahrami, Poyan, Johnson, Michael, Hays, Charles C

“…1,1,3,3-Tetramethylguanidine (TMG) is an organic superbase which has recently found use as a primary functional group in alkaline anion exchange membranes…”
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Neue numerische Simulation für alte Holzkonstruktionen by Konopka, Daniel, Stöcklein, Josef, Kaliske, Michael

“…Abstract Holz ist ein Werkstoff mit langer Tradition und breitem Anwendungsspektrum. Der Beitrag gibt einen Einblick in die Methodenentwicklung für die…”
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Composition- and Morphology-Dependent Corrosion Stability of Ruthenium Oxide Materials by Pylypenko, Svitlana, Blizanac, Berislav B, Olson, Tim S, Konopka, Daniel, Atanassov, Plamen

“…Ruthenium oxide materials were evaluated as possible non-carbon-based supports for fuel cell catalysts. The effects of composition and morphology of ruthenium…”
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Aerosol synthesis and electrochemical analysis of niobium mixed-metal oxides for the ethanol oxidation reaction in acid and alkaline electrolyte by Konopka, Daniel A

“…Direct ethanol fuel cells are especially important among emerging electrochemical power systems with the potential to offset a great deal of the energy demand…”
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Aerosol synthesis and electrochemical analysis of niobium mixed-metal oxides for the ethanol oxidation reaction in acid and alkaline electrolyte by Konopka, Daniel A

“…Direct ethanol fuel cells are especially important among emerging electrochemical power systems with the potential to offset a great deal of the energy demand…”
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