Concept

Vibrations of a circular membrane

Related publications (18)

Vibration-Based Parameter Identification of Large Scale Offshore Structures

Structural health monitoring has increasingly become a hot research topic for engineering structures. While much improvement has been made in advances of sensing, communication and computer technologies, identification of structural parameters based on vib ...

2011

Fluid-Structure Coupling in the Guide Vanes Cascade of a Pump-Turbine Scale Model

François Avellan, Mohamed Farhat, Vlad Hasmatuchi, Steven Roth, Francisco Botero

The present study concerns fluid-structure coupling phenomena occurring in a guide vane cascade of a pump-turbine scale model placed in the EPFL PF3 test rig. An advanced instrument set is used to monitor both vibrating structures and the surrounding flow. ...

International Association For Hydraulic Research2010

Oscillator Based on Suspended Gate MOS Transistors

Mihai Adrian Ionescu, Marco Mazza, Yogesh Singh Chauhan, Alexandru Rusu

The paper deals with the oscillator applications based on vibrating mode of the suspended gate SG-MOSFET transistor. In order to simulate the electrical behavior of the transistor a small-signal equivalent circuit of the gate is proposed and validated. An ...

2008

Analytical and numerical modeling of an ultrasonic stepping motor using standing waves

Yves Perriard, José Fernandez Lopez

Piezoelectric motors (usually called ultrasonic) show interesting characteristics. Not only they deliver high torques at low speeds but their structure confers to them a braking torque without energy supply. This paper firstly present a list of possible so ...

2004

Extreme temperature sensing using Brillouin scattering in optical fibers

Alexandre Fellay

Stimulated Brillouin scattering in silica-based optical fibers may be considered from two different and complementary standpoints. For a physicist, this interaction of light and pressure wave in a material, or equivalently in quantum theory terms between p ...

EPFL2003

Piezoelectric acoustic sensors and ultrasonic transducers based on textured PZT thin films

Nicolas Ledermann

This work dealt with the establishment of a reproducible and industrially exploitable fabrication technology for piezoelectric MEMS based on PZT thin films. {100}-textured piezoelectric 1-4 μm thick films were found to be the most suited materials for MEMS ...

EPFL2003

Dynamic structure factor of vitreous silica from first principles: Comparison to neutron-inelastic-scattering experiments

Alfredo Pasquarello, Roberto Car

Using a first-principles approach, we study the vibrational properties of vitreous SiO2 which are measured in neutron-scattering experiments. We adopt a model structure consisting of corner-sharing tetrahedra, which was previously generated using first-pri ...

1998

Dynamical properties of vortical structures on the beta-plane

Jan Sickmann Hesthaven

The long-time evolution of monopolar and dipolar vortices influenced by the large-scale gradient of the ambient potential vorticity (the beta-effect) is studied by direct numerical solutions of the equivalent barotropic quasi-geostrophic equation. Translat ...

Cambridge University Press1994

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