3rd IEEE International Workshop on Measurements and Networking, M and N 2015, Oct 2015, Coimbra, Portugal. pp.42-47, ⟨10.1109/IWMN.2015.7322971⟩. ⟨hal-03528692⟩

Communication dans un congrès

Estimation of the area of a reverberant plate using average reverberation properties

Hossep Achdjian, Emmanuel Moulin, Farouk Benmeddour, Jamal Assaad

This paper aims to present an original method for the estimation of the area of thin plates of arbitrary geometrical shapes. This method relies on the acquisition and ensemble processing of reverberated elastic signals on few sensors. The acoustical Green's function in a reverberant solid...

International Congress on Ultrasonics, ICU 2015, May 2015, Metz, France. pp.139-142, ⟨10.1016/j.phpro.2015.08.065⟩. ⟨hal-04087466⟩

Article dans une revue

Sound generation by non-synchronously oscillating rotor blades in turbomachinery

Di Zhou, Xiaoyu Wang, Jun Chen, Xiaodong Jing, Xiaofeng Sun

In this paper, the sound generation by non synchronously oscillating rotor blades in axial compressor is investigated with emphasis on establishing an analytical model for the corresponding sound field inside an annular duct. In terms of the present model, it is found that the acoustic frequency...

Journal of Sound and Vibration, 2015, 355, pp.150-171. ⟨10.1016/j.jsv.2015.06.018⟩. ⟨hal-01348664⟩

Communication dans un congrès

An overview of 15 years of French collaborative projects for the characterization of concrete properties by combining NDT methods

Jean-Paul Balayssac, Vincent Garnier, Géraldine Villain, Zoubir Medhi Sbartaï, Xavier Derobert, Bogdan Piwakowski, Denys Breysse, Jean Salin

This communication aims to present the evolution of the activities carried out in France for assessing concrete properties by combining NDT methods. An important effort was done for improving NDT methods, particularly for more suitable on-site applications (for instance use of ultrasonic non-...

NDT-CE 2015, International Symposium Non-Destructive Testing in Civil Engineering, Sep 2015, BERLIN, Germany. 11p. ⟨hal-01608964⟩

Article dans une revue

The Faraday instability in miscible fluid systems

S.V. Diwakar, Farzam Zoueshtiagh, Sakir Amiroudine, Ranga Narayanan

The Faraday instability arising in distinct miscible fluid layers, when the parametric forcing is parallel to the gravity vector, is analysed. A time-dependent density gradient is established from the moment the fluid layers are placed in contact with one another. The operating parameters in a...

Physics of Fluids, 2015, 27 (8), pp.084111. ⟨10.1063/1.4929401⟩. ⟨hal-03277845⟩

Article dans une revue

Modelling based on Spatial Impulse Response Model for Optimization of Inter Digital Transducers (SAW Sensors) for Non Destructive Testing

Dame Fall, Marc Duquennoy, Mohammadi Ouaftouh, Bogdan Piwakowski, Frédéric Jenot

This study deals with modelling SAW-IDT transducers for their optimization. These sensors are specifically developed to characterize properties of thin layers, coatings and functional surfaces. Among the methods of characterization, the ultrasonic methods using Rayleigh surface waves are...

Physics Procedia, 2015, Proceedings of the 2015 ICU International Congress on Ultrasonics, Metz, France, 70, pp.927-931. ⟨10.1016/j.phpro.2015.08.192⟩. ⟨hal-03810639⟩