| 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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Leclere, Quentin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2023On the estimation of the shear modulus of a honeycomb sandwich panel from X-ray mapping of its core
- 2022Wave correlation approaches to analyse 3D velocity fields: application to a honeycomb core composite panel
- 2022Acoustic Imaging using Distributed Spherical Microphone Arrays
- 2021Development of the Corrected Force Analysis Technique for laminated composite panelscitations
- 2020On the structural dynamics of laminated composite plates and sandwich structures; a new perspective on damping identificationcitations
- 2019Sparse acoustical holography from iterated Bayesian focusingcitations
- 2019INFLUENCE OF GRAIN MORPHOLOGY AND SIZE ON ULTRASONIC ATTENUATION IN POLYCRISTALLINE ISOTROPIC MATERIALS
- 2018Assessment of the apparent bending stiffness and damping of multilayer plates; modelling and experimentcitations
- 2018Spatial Patterning of the Viscoelastic Core Layer of a Hybrid Sandwich Composite Material to Trigger Its Vibro-Acoustic Performancescitations
- 2018Modeling, designing and measuring hybrid sandwich composite panels with optimized damping properties
- 2017Versatile hybrid sandwich composite combining large stiffness and high damping: spatial patterning of the viscoelastic core layercitations
- 2015Vibrational behavior of multi-layer plates in broad-band frequency range: comparisons between experimental and theoretical estimations
Places of action
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article
Assessment of the apparent bending stiffness and damping of multilayer plates; modelling and experiment
Abstract
Research highlights : -Determination of material properties of sandwich plates from experimental vibrational fields. -Frequency dependent apparent stiffness and apparent damping of three-layered sandwich plates. -Comparisons of measured/predicted frequency dependent equivalent complex modulus. -Inverse vibrational method to identify polymer characteristics up to 20 kHz. -Comparisons with Dynamic Mechanical Analysis measurements ; International audience ; In the context of aeronautics, automotive and construction applications, the design of light multilayer plates with optimized vibroacoustical damping and isolation performances remains a major industrial challenge and a hot topic of research. This paper focuses on the vibrational behavior of three-layered sandwich composite plates in a broad-band frequency range. Several aspects are studied through measurement techniques and analytical modelling of a steel/polymer/steel plate sandwich system. A contactless measurement of the velocity field of plates using a scanning laser vibrometer is performed, from which the equivalent single layer complex rigidity (apparent bending stiffness and apparent damping) in the mid/high frequency ranges is estimated. The results are combined with low/mid frequency estimations obtained with a high-resolution modal analysis method so that the frequency dependent equivalent Young's modulus and equivalent loss factor of the composite plate are identified for the whole [40 Hz-20 kHz] frequency band. The results are in very good agreement with an equivalent single layer analytical modelling based on wave propagation analysis (model of Guyader). The comparison with this model allows identifying the frequency dependent complex modulus of the polymer core layer through inverse resolution. Dynamical mechanical analysis measurements are also performed on the polymer layer alone and compared with the values obtained through the inverse method. Again, a good agreement between these two estimations over the broad-band frequency range demonstrates ...