| 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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Donadon, Maurício V.
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Topics
Publications (9/9 displayed)
- 2019Translaminar fracture toughness and fatigue crack growth characterization of carbon-epoxy plain weave laminatescitations
- 2019Experimental Characterization of Mode I Interlaminar Fracture Toughness in Low-Melt Paek Thermoplastic Composite Material
- 2019Hygrothermal effects on mode II interlaminar fracture toughness of co-bonded and secondary bonded composites jointscitations
- 2018Strain rate effects on the intralaminar fracture toughness of composite laminates subjected to compressive loadcitations
- 2018An experimental investigation of trailing-edge noise reduction due to elasticity
- 2018Strain rate effects on the intralaminar fracture toughness of composite laminates subjected to tensile loadcitations
- 2017Aeroelastic behavior of stiffened composite laminated panel with embedded SMA wire using the hierarchical Rayleigh–Ritz methodcitations
- 2017Assembly of semi-analytical models to address linear buckling and vibration of stiffened composite panels with debonding defectcitations
- 2016Flutter of stiffened composite panels considering the stiffener's base as a structural elementcitations
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document
An experimental investigation of trailing-edge noise reduction due to elasticity
Abstract
<p>The proximity of the source and an edge can make the acoustic scattering by wings a significant source of aerodynamic sound. Theoretical results have shown that elastic edges lead to reductions of acoustic scattering; however, experimental confirmation of theoretical trends is difficult, since surface vibrations modify both the source structure and the scattering properties. A simplified, controlled setting for measurements of acoustic scattering, allowing the evaluation of fluid-structure interactions, would thus be desirable to study how elastic edges modify the radiated sound. We present an experimental procedure to isolate the scattered field using a loudspeaker in the vicinity of at plates. The methodology is applied to three different plates, made of steel, aluminum and carbon fiber, as a demonstration. The responses of these elastic plates are studied for a sound source of dipole type near the trailing edge. The method is based on the experimental determination of frequency response functions between source and radiated sound for experiments with and without the plate; subtraction of results, accounting for amplitude and phase, isolates the scattered field. Experimental results treated with the developed procedure were compared with predictions made by numerical simulations performed with a Boundary Element Method (BEM), coupling the acoustic problem with the plate vibration. The comparison between experimental and numerical results revealed that a two-dimensional model can predict satisfactorily the reductions in scattered field by elastic plates observed in the experiment. The present methods can be used to support the choice between different materials for edges focusing on their respective acoustic benefit.</p>