Concept

Metrology

Related publications (43)

CMS4SI Structural Identification Approach for Interpreting Measurements

The ageing of existing structures and new innovative designs are increasing the necessity for a greater understanding of structural behaviour. A better understanding would improve effectiveness of activities such as assessing reserve capacity, evaluating l ...

2010

Digital holographic microscopy for silicon microsystems metrology

Christian Depeursinge, Yves Delacrétaz

We propose to use digital holographic microscopy (DHM) with an illumination in the near infrared spectrum bandwidth, where the silicon is known to have small absorption. With such an illumination condition, it is possible to observe a wider range of specim ...

SPIE2010

Influence of pumped storage operation on flow conditions near intake/outlet structures : in situ measurement using ADCP

Anton Schleiss, Giovanni De Cesare, Michael Müller

In the framework of a research project studying the influences of pumping/turbine modes on turbulence, flow fields and suspended sediments in reservoirs, prototype measurements are carried out at the Grimsel II pumped storage plant (Switzerland). In situ r ...

Ed. Dittrich, Koll, Aeberle & Geisenhainer (eds)2010

Durabilité et dimensionnement de collages composite-titane pour des applications marines

Véronique Michaud, Sébastien Lavanchy, Joël Cugnoni, Basile Golaz

Dans certains bateaux de compétitions ou destinés aux records de vitesse, on tend à minimiser le poids des structures, ainsi que celui des assemblages. C'est pour cette raison que l'on tend à coller les pièces à assembler plutôt que de les riveter, comme p ...

2009

3D-Spiral small antenna design and realization for biomedical telemetry in the MICS band

Juan Ramon Mosig, Anja Skrivervik, Jean-François Zürcher, Francesco Merli

This work presents the design and realization procedure of small implantable antenna for biotelemetry applications. The radiator occupies a volume smaller than 3 cm(3) (without its biocompatible insulation), is well matched within the Medical Implanted Com ...

2009

Configuring and enhancing measurement systems for damage identification

Ian Smith

Engineers often decide to measure structures upon signs of damage to determine its extent and its location. Measurement locations, sensor types and numbers of sensors are selected based on judgment and experience. Rational and systematic methods for evalua ...

Elsevier2009

Vers la maîtrise de la qualité des assemblages de précision

Fabien Bourgeois

In several industrial case studies, we put in evidence that microsystem manufacturing costs skyrocket because of low yields. Sometimes product functionalities are badly defined ; sometimes metrology systems, in spite of their high cost, happen not to measu ...

EPFL2007

Characterization of microlenses by digital holographic microscopy

Christian Depeursinge, Tristan Colomb, Etienne Cuche, Frédéric Montfort, Pierre Marquet, Jonas Kühn, Florian Charrière

We demonstrate the use of digital holographic microscopy (DHM) as a metrological tool in micro-optics testing. Measurement principles are compared with those performed with Twyman-Green, Mach-Zehnder, and white-light interferometers. Measurements performed ...

2006

Analyse des comportements des automobilistes à l’occasion de la fermeture partielle des tunnels de Glion

Vincent Kaufmann, Luca Giovanni Pattaroni, Christophe Jemelin, Michael Flamm

A la suite de l’incendie du tunnel du Mont-Blanc en 1999, l’Office Fédéral des Routes (OFROU) a édicté de nouveaux standards de sécurité, impliquant en particulier des travaux de réfection des tubes du tunnel de Glion (construits entre 1968 et 1971) sur l’ ...

2005

A New Single-Phase Multilevel Modulator - A Fast and Accurate Method to Compute the Modulator Harmonic Spectra

Alfred Rufer

In the first part, a fast and accurate method to compute the harmonic spectra of PWM modulators is presented. This method allows to compute all measurements based on the harmonics values such as the THD or FWTHD. It is especially advantageous for multileve ...

2004

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