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apps Other research productkeyboard_double_arrow_right Other ORP type 2018 Germany EnglishGeorgi, Tom; Troge, Jan; Lindner, Paul; Schulze, Christian; Hübelt, Jörn;The acoustical impact of silencers is restricted by the influence of structure-borne sound. Thereby, excitation and radiation of structure-borne sound play an important role, as well as its transmission along the silencer system. In the design process of a silencer the influence of structure-borne sound on the damping effect is mostly considered by empirical estimations, which can cause an oversized construction. For calculating structure-borne sound in maritime silencers with their typical large dimensions, the application of statistical methods is a possible problem-solving approach. In this contribution, a new simulation and optimization tool is presented, considering the decreased damping effect of silencers due to structure-borne sound. The tool is based on Statistical Energy Analysis (SEA). Results of analytical and experimental SEA are compared. These results were obtained on downscaled silencers and have been transferred to real maritime silencers. Especially the SEA-parameters loss factor and coupling loss factor, airborne and structure-borne sound energies and the number of relevant modes are considered. Based on the measured damping of a silencer compared with numerical and statistical calculations, the capability for optimizing the design process of large silencers is shown.
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2018 Germany GermanAuthors: Nossol, Patryk;Nossol, Patryk;Beim Vortrag wurden Inhalte sowie Teilergebnisse der beiden Projekte ""CrashTex"" und ""CrashTex-II"" vorgestellt, die innerhalb des Leistungszentrums Smart Production durchgeführt worden sind. Das Ziel von CrashTex bestand darin Crash-Wirkprinzipien für Faserverbundmaterialien zu konzipieren, diese rechentechnisch sowie experimentell zu untersuchen und für eine Anwendung in PKW-Crashstrukturen zu optimieren. Diese Wirkprinzipien sollen auf einem ähnlichen Niveau wie Metall-Lösungen Crash-Energie aufnehmen und zugleich höhere Leichtbaugrade ermöglichen. Die Ergebnisse der Fraunhofer Untersuchungen zeigen hohe spezifische Energieabsorptionswerte (SEA-Werte) für CFK bei ausgewählten Crash-Wirkmechanismen und Lagenaufbau. Diese SEA-Werte übertreffen deutlich die Werte für Aluminium und ermöglichen somit höhere Leichtbaugrade bei zukünftigen Fahrzeug-Crash-Strukturen durch eine faserverbundgerechte Crash-Funktion. Somit wird der Bezug zum Cluster "Materials" des Leistungszentrums "Smart Production" geschaffen. Das Ziel des Vorhabens CrashTex-II besteht in der Gestaltung und Auslegung neuartiger Dachrahmen-, B-Säulen- und Schwellerstrukturen in hybrider Leichtbauweise, bestehend aus metallischer Hülle und innerer Faserverbundstruktur. Neben höheren Leichtbaugraden soll mit der neuen Bauweise auch eine verbesserte Adaptionsfähigkeit bezüglich verschiedener Fahrzeug- und Motorisierungsvarianten ermöglicht werden. Die konzipierten hybriden Seitenrahmenstrukturen ermöglichen höhere Leichtbaugrade bei zukünftigen Fahrzeug-Crash-Strukturen durch eine faserverbundgerechte Crash-Funktion. Somit wird auch hier der Bezug zum Cluster "Materials" des Leistungszentrums "Smart Production" geschaffen.
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2017 Germany English EC | BigDataOceanEC| BigDataOceanAuthors: Lytra, Ioanna; Orlandi, Fabrizio; Vidal, Maria-Esther;Lytra, Ioanna; Orlandi, Fabrizio; Vidal, Maria-Esther;BigDataOcean - Exploiting Oceans of Data for Maritime Applications @EU Project Networking session of the 14th Extended Semantic Web Conference (ESWC'17)
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2016 Germany EnglishAuthors: Spies, Martin; Rieder, Hans; Rauhaut, Markus; Kreier, Peter;Spies, Martin; Rieder, Hans; Rauhaut, Markus; Kreier, Peter;In this contribution we concentrate on the detection and quantitative characterization of casting defects at the surface as well as in the near-surface and the bulk area. For ultrasonic inspection of the bulk material we employ mechanized scanning and defect reconstruction using the Synthetic Aperture Focusing Technique (SAFT). For the near-surface inspection we consider eddy current techniques to identify open or covered defects. Visual surface inspection based on optical systems and image processing complements our multi-sensor approach.
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apps Other research productkeyboard_double_arrow_right Other ORP type 2018 Germany EnglishGeorgi, Tom; Troge, Jan; Lindner, Paul; Schulze, Christian; Hübelt, Jörn;The acoustical impact of silencers is restricted by the influence of structure-borne sound. Thereby, excitation and radiation of structure-borne sound play an important role, as well as its transmission along the silencer system. In the design process of a silencer the influence of structure-borne sound on the damping effect is mostly considered by empirical estimations, which can cause an oversized construction. For calculating structure-borne sound in maritime silencers with their typical large dimensions, the application of statistical methods is a possible problem-solving approach. In this contribution, a new simulation and optimization tool is presented, considering the decreased damping effect of silencers due to structure-borne sound. The tool is based on Statistical Energy Analysis (SEA). Results of analytical and experimental SEA are compared. These results were obtained on downscaled silencers and have been transferred to real maritime silencers. Especially the SEA-parameters loss factor and coupling loss factor, airborne and structure-borne sound energies and the number of relevant modes are considered. Based on the measured damping of a silencer compared with numerical and statistical calculations, the capability for optimizing the design process of large silencers is shown.
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2018 Germany GermanAuthors: Nossol, Patryk;Nossol, Patryk;Beim Vortrag wurden Inhalte sowie Teilergebnisse der beiden Projekte ""CrashTex"" und ""CrashTex-II"" vorgestellt, die innerhalb des Leistungszentrums Smart Production durchgeführt worden sind. Das Ziel von CrashTex bestand darin Crash-Wirkprinzipien für Faserverbundmaterialien zu konzipieren, diese rechentechnisch sowie experimentell zu untersuchen und für eine Anwendung in PKW-Crashstrukturen zu optimieren. Diese Wirkprinzipien sollen auf einem ähnlichen Niveau wie Metall-Lösungen Crash-Energie aufnehmen und zugleich höhere Leichtbaugrade ermöglichen. Die Ergebnisse der Fraunhofer Untersuchungen zeigen hohe spezifische Energieabsorptionswerte (SEA-Werte) für CFK bei ausgewählten Crash-Wirkmechanismen und Lagenaufbau. Diese SEA-Werte übertreffen deutlich die Werte für Aluminium und ermöglichen somit höhere Leichtbaugrade bei zukünftigen Fahrzeug-Crash-Strukturen durch eine faserverbundgerechte Crash-Funktion. Somit wird der Bezug zum Cluster "Materials" des Leistungszentrums "Smart Production" geschaffen. Das Ziel des Vorhabens CrashTex-II besteht in der Gestaltung und Auslegung neuartiger Dachrahmen-, B-Säulen- und Schwellerstrukturen in hybrider Leichtbauweise, bestehend aus metallischer Hülle und innerer Faserverbundstruktur. Neben höheren Leichtbaugraden soll mit der neuen Bauweise auch eine verbesserte Adaptionsfähigkeit bezüglich verschiedener Fahrzeug- und Motorisierungsvarianten ermöglicht werden. Die konzipierten hybriden Seitenrahmenstrukturen ermöglichen höhere Leichtbaugrade bei zukünftigen Fahrzeug-Crash-Strukturen durch eine faserverbundgerechte Crash-Funktion. Somit wird auch hier der Bezug zum Cluster "Materials" des Leistungszentrums "Smart Production" geschaffen.
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2017 Germany English EC | BigDataOceanEC| BigDataOceanAuthors: Lytra, Ioanna; Orlandi, Fabrizio; Vidal, Maria-Esther;Lytra, Ioanna; Orlandi, Fabrizio; Vidal, Maria-Esther;BigDataOcean - Exploiting Oceans of Data for Maritime Applications @EU Project Networking session of the 14th Extended Semantic Web Conference (ESWC'17)
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.euapps Other research productkeyboard_double_arrow_right Other ORP type 2016 Germany EnglishAuthors: Spies, Martin; Rieder, Hans; Rauhaut, Markus; Kreier, Peter;Spies, Martin; Rieder, Hans; Rauhaut, Markus; Kreier, Peter;In this contribution we concentrate on the detection and quantitative characterization of casting defects at the surface as well as in the near-surface and the bulk area. For ultrasonic inspection of the bulk material we employ mechanized scanning and defect reconstruction using the Synthetic Aperture Focusing Technique (SAFT). For the near-surface inspection we consider eddy current techniques to identify open or covered defects. Visual surface inspection based on optical systems and image processing complements our multi-sensor approach.
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