Concept

Arc électrique

Publications associées (93)

On the Damper-Bar Current Calculation For High Power Salient Poles Synchronous Machines

Jean-Jacques Simond, Basile Kawkabani, György Atilla Bànyai

The goal of the paper was to analyze the current distribution of a high-power salient-pole synchronous machine damper winding. A few methods were considered but only two analytical methods are highlighted. Both methods arc based on parameter calculation by ...

2008

Sensors for Applications in Magnetic Resonance Environments

Hannes Bleuler, Dominique Chapuis, Roger Gassert, Etienne Burdet

This paper analyzes sensing methods compatible with magnetic resonance imaging (MRI) and functional MRI (fMRI) reported in the literature, and presents the three generations of MR-compatible force/torque sensors we have developed for robotic systems to int ...

2008

Modification of Conductivity and of Mechanical Properties of Electroactive Polymer (EAP) Thin Films by Titanium Ion Implantation

Herbert Shea, Samuel Rosset, Muhamed Niklaus

We present a study of the influence on Youngs modulus, stress and electrical conductivity of poly-dimethylsiloxane membranes implanted with titanium ions at energies from 5 to 35 keV, with doses up to 8x10^16 ions/cm2. The motivation for this study was to ...

Materials Research Society2008

Hydrogen bubbles and the growth morphology of ramified zinc by electrodeposition

Giorgio Margaritondo

Real-time X-ray microscopy was used to study the influence of hydrogen-bubble formation on the morphology of ramified zinc electrodeposit. The experimental results show that when intense hydrogen bubbling occurs at high potential, the morphology of the ram ...

2008

Time-resolved imaging and spatially-resolved spectroscopy of Electrical Discharge Machining Plasmas

Christoph Hollenstein, Antoine Descoeudres, Ricardo Pérez Suárez

Optical spectroscopy of the emission from a plasma created during electrical discharge machining (EDM) showed a strong Ha line coming from neutral hydrogen atoms and continuum radiation. An electron temperature of 0.7 eV and plasma density of 2.1018 cm(3) ...

Univ Nebraska-Lincoln, Industrial & Management Systems Engineering, Lincoln, Ne 68588 Usa2007

External impedance and admittance of buried horizontal wires for transient studies using transmission line analysis

Mario Paolone

The paper investigates the applicability of some closed form expressions for the ground impedance and ground admittance of buried horizontal wires (bare and insulated) for lightning or switching transient analyses based on transmission line (TL) theory. In ...

2007

Catalytically grown carbon nanotubes: from synthesis to toxicity

László Forró, Arnaud Magrez, Jin Won Seo, Kyumin Lee, Mirko Milas

Catalytic chemical vapour deposition (CCVD) is currently the most promising technique to produce carbon nanotubes (CNTs) on a specific site as well as on a large-scale. Here, we review our recent experimental studies on CNTs grown by CCVD. The yield as wel ...

2007

Coloring some classes of mixed graphs

Bernard Ries

We consider the coloring problem for mixed graphs, that is, for graphs containing edges and arcs. A mixed coloring

c

is a coloring such that for every edge

[x_{i},x_{j}]

c(x_{i})\neq c(x_{j})

and for every arc

(x_{p},x_{q})

, $c(x_{p})

2007

Bipolar resistivity profiling of 3D tissue culture

Philippe Renaud, Yann Barrandon, Olof Pontus Linderholm, Jonas Vannod

We describe a new low-cost technique for continuous monitoring of the thickness of biofilms and tissue cultures, and we demonstrate the advantage of using electrodes of different dimensions to probe different depths of a sample. We have used electric imped ...

2007

The gas film in Spark Assisted Chemical Engraving (SACE) - A key element for micro-machining applications

Rolf Wüthrich

Machining of various electrically non-conductive materials is possible with Spark Assisted Chemical Engraving (SACE). Even though this technology presents several interesting properties like simplicity, flexibility and the possibility to obtain very smooth ...

2006

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Coloring some classes of mixed graphs

Bernard Ries

We consider the coloring problem for mixed graphs, that is, for graphs containing edges and arcs. A mixed coloring

c

is a coloring such that for every edge

[x_{i},x_{j}]

c(x_{i})\neq c(x_{j})

and for every arc

(x_{p},x_{q})

, $c(x_{p})

2007