| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Wollmann, Tino
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2024Verfahren zum Herstellen einer akustisch dämpfenden zellularen Struktur, akustisch dämpfende zellulare Struktur und strömungsführendes Bauteil mit mehreren akustisch dämpfenden zellularen Strukturen
- 2023Werkstückbildungsvorrichtung und Verfahren zum Herstellen eines Faserverbundwerkstücks
- 2023Influence of fiber tension during filament winding on the mechanical properties of composite pressure vesselscitations
- 2023Verfahren zur Herstellung eines Triebwerksbauteils aus mindestens einem faserverstärkten Kunststoff
- 2022Experimental investigation of large-scale high-velocity soft-body impact on composite laminatescitations
- 2022Experimental investigation of high strain-rate, large-scale crack bridging behaviour of z-pin reinforced tapered laminatescitations
- 2022Vorrichtung und Verfahren zur Durchführung von Messungen an rotierenden Objekten
- 2021Numerical buckling analysis of hybrid honeycomb cores for advanced helmholtz resonator linerscitations
- 2021Spatially Resolved Experimental Modal Analysis on High-Speed Composite Rotors Using a Non-Contact, Non-Rotating Sensor.
- 2021Design and testing of polar-orthotropic multi-layered composites under rotational loadcitations
- 2021Diffraction grating sensor for damage and modal analysis of fast rotating composite structures
- 2021Spatially Resolved Experimental Modal Analysis on High-Speed Composite Rotors Using a Non-Contact, Non-Rotating Sensorcitations
- 2020Beugungsgitterbasierte Schädigungs-, Eigenfrequenz- und Eigenformmessung an schnelldrehenden Faserverbundrotoren
- 2020Non-destructive testing of a rotating glass-fibre-reinforced polymer disc by swept source optical coherence tomographycitations
- 2020Diffraction grating based measurement of the modal behavior of fast rotating composite discs (Conference Presentation)
- 2019Optical strain measurements on fast moving fiber reinforced polymer rotors using diffraction gratingscitations
- 2018Thermoplastic fibre metal laminates: Stiffness properties and forming behaviour by means of deep drawingcitations
- 20183D-DynRoCo - Excitation and vibration analysis of rotating structures
- 2018Entwicklung eines kombinierten numerisch-experimentellen Ansatzes zur 3D Erfassung des Schwingungsverhaltens von rotierenden Komponenten
- 2017Effiziente Mischbauweisen für Leichtbau-Karosserien - LEIKA
- 2016Forming of carbon fibre-reinforced metal laminates in combination with injection moulding
- 2015Design of composite compressor blades with focus on the vibration behaviour
- 2014Carbon fibre-reinforced metal laminates – An alternative to aluminium in vehicle construction
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article
Spatially Resolved Experimental Modal Analysis on High-Speed Composite Rotors Using a Non-Contact, Non-Rotating Sensor.
Abstract
Due to their lightweight properties, fiber-reinforced composites are well suited for large and fast rotating structures, such as fan blades in turbomachines. To investigate rotor safety and performance, in situ measurements of the structural dynamic behaviour must be performed during rotating conditions. An approach to measuring spatially resolved vibration responses of a rotating structure with a non-contact, non-rotating sensor is investigated here. The resulting spectra can be assigned to specific locations on the structure and have similar properties to the spectra measured with co-rotating sensors, such as strain gauges. The sampling frequency is increased by performing consecutive measurements with a constant excitation function and varying time delays. The method allows for a paradigm shift to unambiguous identification of natural frequencies and mode shapes with arbitrary rotor shapes and excitation functions without the need for co-rotating sensors. Deflection measurements on a glass fiber-reinforced polymer disk were performed with a diffraction grating-based sensor system at 40 measurement points with an uncertainty below 15 μrad and a commercial triangulation sensor at 200 measurement points at surface speeds up to 300 m/s. A rotation-induced increase of two natural frequencies was measured, and their mode shapes were derived at the corresponding rotational speeds. A strain gauge was used for validation.