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Auteur Holger Seidlitz |
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Force flux-maintaining spot connections / Holger Seidlitz in KUNSTSTOFFE INTERNATIONAL, Vol. 101, N° 3 (03/2011)
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Titre : Force flux-maintaining spot connections Type de document : texte imprimé Auteurs : Holger Seidlitz, Auteur ; Lothar Kroll, Auteur ; Lars Ulke-Winter, Auteur Année de publication : 2011 Article en page(s) : p. 25-28 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Assemblages (technologie)
Matières plastiques
MétauxIndex. décimale : 668.4 Plastiques, vinyles Résumé : Heavy-Duty Lightweight Structures - A hybrid construction principle for joining fiber-reinforced plastic composites and metals can be used to develop weightoptimized structures with high stiffness and load-bearing capability. For such applications, a novel joining process which maintains the force flux and, in addition, is suitable for mass production has been developed for high-performance applications. Note de contenu : - Joining technique for composite/metal structures
- Thermo mechanically flow-formed connectionPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11743
in KUNSTSTOFFE INTERNATIONAL > Vol. 101, N° 3 (03/2011) . - p. 25-28[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012938 - Périodique Bibliothèque principale Documentaires Disponible Highly efficient adaptive fiber-composite rotor blade / Gero Pfizenmaier in KUNSTSTOFFE INTERNATIONAL, Vol. 111, N° 5 (2021)
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Titre : Highly efficient adaptive fiber-composite rotor blade : Additive manufacture of FRP injection molds for FRP components of small wind turbines Type de document : texte imprimé Auteurs : Gero Pfizenmaier, Auteur ; Lucas Ost, Auteur ; Jonas Krenz, Auteur ; Lars Ulke-Winter, Auteur ; Holger Seidlitz, Auteur ; Christian Beloch, Auteur Année de publication : 2021 Article en page(s) : p. 10-12 Langues : Anglais (eng) Catégories : Composites à fibres de verre
Composites à fibres de verre -- Moulage par injection
Eoliennes -- Matériaux
Epoxydes
Impression tridimensionnelle
Matériaux -- Allègement
Moules d'injection -- Conception et construction
Pales d'éoliennes
PolyuréthanesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Currently, small wind turbines can hardly be operated profitably in landlocked regions. This drawback has now been overcome by the partners EAB Gebäudetechnik Luckau GmbH and the Chair of Polymer-based Lightweight Design at the BTU Cottbus-Senftenberg : passive smartblades made from 3D-printed molds adapt independently to wind conditions. This is achieved by an intelligent layer structure and its bending-torsion-coupling. Note de contenu : - The inland path to profitable SWTs
- Efficient product development thanks to modern simulation technology
- CFD and FEM calculations : torsion under wind load
- Figure : This newly developed rotor blade is especially suited for weak-wind regions and adapts independently to the wind load
- Fig. 1 : Production-ready implementation of a rotor blade design with the profiles and the profile chord
- Fig. 2 : Distribution of pressure on the rotor blade and Tsai-Wu failure criterion (TSAIW). There is no damage to the laminate at TSAIW < 1
- Fig. 3 : Regression curves (polynomial, degree 6) of torsion angle over blade length at a wind speed of 20 m/s
- Fig. 4 : Development of the mold for manufacturing rotor blades. a) CAD model of the mold ; b) printed mold ; c) infusion of a rotor blade half ; d) rotor blade following gluing of both shell halves
- Table : Process parameters in the hybrid production of mold halvesEn ligne : https://drive.google.com/file/d/1RLPMwrNHjoC_Ibj2A56sRcjkVkuoHEiD/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36159
in KUNSTSTOFFE INTERNATIONAL > Vol. 111, N° 5 (2021) . - p. 10-12[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22860 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Simulation of composites' heating : Joining of fiber-reinforced plastic composites Type de document : texte imprimé Auteurs : Lucas Ost, Auteur ; Oleg Shapovalov, Auteur ; Felix Kuke, Auteur ; Nikolay Doynov, Auteur ; Holger Seidlitz, Auteur ; Vesselin Michailov, Auteur ; Marcello Ambrosio, Auteur Année de publication : 2023 Article en page(s) : p. 60-64 Langues : Anglais (eng) Catégories : Assemblages (technologie)
Composites à fibres -- Soudage
Composites à fibres de carbone
Fibres à orientation unidirectionnelle
Polyamide 6
Simulation par ordinateur
Soudage par rayonnement infrarougeIndex. décimale : 668.4 Plastiques, vinyles Résumé : Modern material-compatible joining methods for fiber-reinforced plastics require the heating of the materials. In order to predict the respective complex temperature fields and curves, the Fraunhofer IAP and the BTU Cottbus-Senftenberg have developed numerical methods, which are able to simulate different radiation sources and process sequences as well. Note de contenu : - Heat fluxes and radiation distribution
- Radially symmetric model : temperature prediction at the center of the sample
- Three-dimensional model : Prediction of the temperature distribution
- Comparison of experiment and simulation
- The appropriate radiator distance
- Fig. 1 : Experimental setup for temperature measurements on the bottom (left) and top surface (right) of the FRP plate : the thermographic system arrayed from the bottom on the non-radiated surface is calibrated by a single central thermocouple. Multiple thermocouples distributed over the upper side of the plate provide the measurement on the radiated plate surface
- Fig. 2 : Heat fluxes and radiation distribution in the modeled system: Depending on the distance of the radiator, the radiation distributionchanges
- Fig. 3 : The heat capacity of the examined CFRP depends strongly on the temperature
- Fig. 4 : Comparison between experimentally measured and numerically calculated temperature progressions in the center of both surfaces during and after heating : the values show a high degree of agreement between experiment and radially symmetric FEM-simulation
- Fig. 5 : Comparison of the temperature curves of the top surface between FEM and experiment for different distances from the center of the plate: The radiator distance has a greater influence on the heating rate than the plate thickness
- Fig. 6 : Comparison of the temperature fields on the bottom surface of a 2 mm thick CFRP plate during heating shows a good agreement between FEM (lower image halves) and experiment (upper image halves)En ligne : https://drive.google.com/file/d/1DJyidaXLEYd1gXRuJRFzBGUr4xmP9k3s/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40155
in KUNSTSTOFFE INTERNATIONAL > Vol. 113, N° 4 (2023) . - p. 60-64[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23959 - Périodique Bibliothèque principale Documentaires Disponible