| 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
Places of action
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article
Optical strain measurements on fast moving fiber reinforced polymer rotors using diffraction gratings
Abstract
n-situ measurements of the deformation and of the structural dynamical behavior of moving composite structures, such as rotors made of glass fiber reinforced polymers (GFRP), are necessary in order to validate newly developed simulation models. Local methods like strain gauges and fiber Bragg gratings lack spatial resolution, while contactless optical methods like image correlation or speckle interferometry suffer from noise effects in the presence of fast rigid body movements. A novel compact sensor – based on the diffraction grating method – is introduced for spatially and temporally resolved strain measurement. The use of a line camera allows the measurement of vibrations up to several tens of kHz. With a scanning movement, strain fields at submillimeter resolution can be recorded. The use of two diffraction orders and an objective lens reduces cross sensitivities to rigid body movements on the strain measurement by two to three orders of magnitude. A validation on a GFRP probe was conducted in a quasi-static tensile test with an optical extensometer up to 14500 µ ϵ . Furthermore, a strain measurement on a moving rotor at surface speeds up to 75 m/s was performed and the results were compared with those of strain gauges as a gold standard. The statistical standard deviation was around 10 µ ϵ and independent of the rotational speed.