| 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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Filippatos, Angelos
University of Patras
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (36/36 displayed)
- 2024Structural integrity of aging steel bridges by 3D laser scanning and convolutional neural networkscitations
- 2024Vibration-based ice monitoring of composite blades using artificial neural networks under different icing conditions
- 2024Failure mode and load prediction of steel bridge girders through 3D laser scanning and machine learning methodscitations
- 2022Vorrichtung und Verfahren zur Durchführung von Messungen an rotierenden Objekten
- 2022Numerical investigation of the springback behaviour and residual stresses of a hybrid profile produced by the roll forming process
- 2021Design approach for the development of a digital twin of a generic hybrid lightweight structurecitations
- 2021Experimentelle und numerische Untersuchung der Aufschlusszerkleinerung von Multi-Material-Strukturen zur Abschätzung der Recyclingfähigkeit
- 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
- 2021Window-opener as an example for environment measurement and combined actuation of smart hydrogelscitations
- 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
- 2019On the development of a function-integrative sleeve for medical applications
- 2018Influence of gradual damage on the structural dynamic behaviour of composite rotors: Experimental investigationscitations
- 20183D-DynRoCo - Excitation and vibration analysis of rotating structures
- 2018Elementary specific modelling of composite rotors with consideration of sequential damage processes
- 2018Entwicklung eines kombinierten numerisch-experimentellen Ansatzes zur 3D Erfassung des Schwingungsverhaltens von rotierenden Komponenten
- 2017Autonome Überwachung und Adaptierung eines funktionsintegrativen Faserverbundwerkstoff-Blattfedersystems / Autonomous monitoring and adaptation of a function-integrated composite leaf-spring system
- 2017Monitoringsystem zur Kraftmessung am Sportgerät Skistock mittels applizierter Dehnmessstreifen
- 2017Hohe Dämpfung auch in großer Höhe – Einsatz von Faserverbundwerkstoffen für RBG-Hubmasten
- 2017Leichtbaumethoden für die Medizintechnik
- 2017Hilfe im Spitzensport - Monitoringsystem zur uniaxialen Kraftmessung am Skistock mit Dehnmessstreifen
- 2017Faserverbundwerkstoffe zur Schwingungsdämpfung bei Hubmasten von Regalbediengeräten
- 2017Evaluation eines innovativen Monitoringsystems zur uniaxialen Stockkraftmessung mittels applizierter Dehnmessstreifen
- 2016Einsatz faser- bzw. textilverstärkter Funktionswerkstoffe zur Schwingungsdämpfung bei Hubmasten von Regalbediengeräten
- 2016Leichtbauer und Mediziner entwickeln Versuchsgerät für verbesserte Tumordiagnose
- 2016The networked car body – Function-integrated lightweight construction with hybrid yarn textile thermoplastic composites
- 2016Die vernetzte Karosserie – Funktionsintegrativer Leichtbau mit Hybridgarn-Textil-Thermoplast-Verbunden
- 2015D1.3 - Multi-sensor system for dynamic deformation and vibration measurements at high-speed rotors
- 2015Development of a composite, load-adaptive leaf spring: A multi-domain approach
- 2015Design of composite compressor blades with focus on the vibration behaviour
- 2014Experimentelle Untersuchungen des dynamischen Verhaltens von rotierenden Faserverbundstrukturen
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.