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Partial discharge localization using time reversal: application to power transformers and gas-insulated substations

Publications associées (39)

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This paper presents an analytical study on normally incident wave propagation across a joint set. Combined with the displacement discontinuity method (DDM), the virtual wave source method (VWSM) is adopted to take account of multiple wave reflections among ...

Elsevier2011

Caractérisation de la génération et la propagation d'ondes de pressions dans des tissus biologiques pour la conception d'appareils médicaux

Mathieu Benoit

Therapies using so called extracorporeal shock waves (Extracorporeal Shock Wave Therapy ESWT) have become current medical practice in orthopedy and traumatology. In order to understand and to optimize the effect of shock waves in clinical applications, med ...

EPFL2009

Efficiency of Brushwood fences in shore protection against wind-wave induced erosion

Selim Sayah

Shore protection in confined water bodies is of major importance in Switzerland where many lakes suffer severe shore erosion. It occurs mainly in shallow zones due to several reasons such as: the fluctuations of the water level , the wind-wave impact durin ...

EPFL2006

Pulse propagation in discrete excitatory networks of integrate-and-fire neurons

Laurent Badel

We study the propagation of solitary waves in a discrete excitatory network of integrate-and-fire neurons. We show the existence and the stability of a fast wave and a family of slow waves. Fast waves are similar to those already described in continuum net ...

2004

Water wave-driven seepage in marine sediments

David Andrew Barry

The action of water waves moving over a porous seabed drives a seepage flux into and out of the marine sediments. The volume of fluid exchange per wave cycle may affect the rate of contaminant transport in the sediments. In this paper, the dynamic response ...

2001

Toroidal mode conversion in the ICRF

Mode conversion is studied in the ion cyclotron range of frequencies (ICRF), taking into account the toroidal geometry relevant for tokamaks. The global wavefields obtained using the gyrokinetic toroidal PENN code illustrate how the fast wave propagates to ...

1998

Negative dynamic mobility of electrons in silicon in the far-infrared range

Markus Siegrist

We performed Monte Carlo simulation of electron response to a strong pumping wave (443 GHz) and weak signal harmonic waves (886 and 1329 GHz) in silicon. A negative dynamic conductivity is found to arise for 1329 GHz above a threshold value of the pumping ...

1997

Photoemission has become a most powerful electronic probe of high-T-C superconductors. The main present emphasis is on the BCSCO-2212 gap symmetry. After much controversy a consensus emerges: (1) no symmetric s-waves; (2) the symmetry depends on temperatur ...

1996

MATHICSE Technical Report : Finite element heterogeneous multiscale method for elastic waves in heterogeneous media

Assyr Abdulle

A nite element heterogeneous multiscale method (FE-HMM) is proposed for the simulation of time-dependent elastic waves in a rapidly varying heterogeneous elastic medium. It is based on a standard nite element discretization of an effective wave equation at ...

MATHICSE0