Bölle, Tobias
Coherent vortices are important building blocks of complex flows on all scales, governing dynamics in various applications from geophysics over engineering to the coherent-structures’ paradigm of turbulence. As a commonly studied prototype of this configuration, we consider a large-scale, line vortex evolving in a background flow of small-scale, in...
Lentile, Sylvia Bianne, Guillaume Chevalier, Christophe Schmidt, Franziska Rasol, Mezgeen Orcesi, André Adelaide, Lucas Nedjar, Boumediene
In a complex network such as a road infrastructure system, disruptive events have direct consequences (loss of lives, structural damage, economy losses etc.) related to the sub-system level directly affected, as well as indirect consequences on the overall system level such as loss of functionality and related monetary consequences. To quantify the...
MENDLER, Alexander DOHLER, Michael VENTURA, Carlos
This paper derives a formula to determine the minimum detectable damage based on ambient vibration data. It is a key element to analyze which damage scenarios can be detected before a monitoring system is installed. For the analysis, vibration data from the reference structure as well as a finite element model are required. Minimum detectability is...
GRES, Szymon DOHLER, Michael ANDERSEN, Palle MEVEL, Laurent
The Modal Phase Collinearity (MPC) is a modal indicator designed to decide whether the mode shape used in its computation is a real or complex-valued vector. Its estimate inherits the statistical properties of the corresponding mode shape estimate. While the statistical framework for the uncertainty quantification of modal parameters is well-known ...
Bacaër, Nicolas Flora, Bruno Felice Filippo Castin, Yvan Iannelli, Mimmo Affili, Elisa Buonomo, Bruno Margheri, Alessandro Poletto, Chiara Rossi, Luca Venturino, Ezio
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Come ha sottolineato Eugene Wigner, la matematica si è dimostrata efficace, oltre ogni ragionevole aspettativa, nelle scienze fisiche e nelle loro applicazioni tecnologiche. Il ruolo della matematica nelle scienze biologiche, mediche e sociali è stato molto più modesto ma è recentemente cresciuto grazie alla capacità di simulazione offerta dai mode...
MENDLER, Alexander CADORET, Ambroise FREYSSINET, Clément DOHLER, Michael LECIEUX, Yann MEVEL, Laurent VENTURA, Carlos
This article describes an approach to evaluate the minimum localizable damage for stochastic subspace-based damage diagnosis. Localizability is defined as the sensitivity to small and local damages (detectability), the ability to narrow down the exact damage location (localization resolution) and the test response of undamaged parameters (false loc...
Bacaër, Nicolas Bravo de La Parra, Rafael Ripoll, Jordi
Como subrayó Eugene Wigner, las matemáticas han demostrado una eficacia inconmensurable en las ciencias físicas y sus aplicaciones tecnológicas. El papel de las matemáticas en las ciencias biológicas, médicas y sociales ha sido mucho más modesto, pero ha crecido recientemente gracias a la capacidad de simulación que ofrecen los ordenadores modernos...
GRES, Szymon DOHLER, Michael MEVEL, Laurent
The purpose of model updating is to minimize the misfit between the structural response measurements and an assumed numerical model. In the context of damage quantification, this misfit is characterized by some features computed from the response data measured on the faulty structure, and its Finite Element (FE) model in the healthy condition. The ...
HIVERT, Laurent
Présentation séminaire SELEST : La vague annuelle 2020 du panel ParcAuto est présentée sur ses aspects méthodologiques, puis sur ses principaux résultats. La présentation se concentre ensuite sur une question d'opinion, celle de l'acceptation de se laisser conduire par un véhicule 100% autonome : les déterminants (ménage, individu) y sont recherché...
alakian, alexandre achard, véronique
A classification method of hyperspectral reflectance images named CHRIPS (Classification of Hyperspectral Reflectance Images with Physical and Statistical criteria) is presented. This method aims at classifying each pixel from a given set of thirteen classes: unidentified dark surface, water, plastic matter, carbonate, clay, vegetation (dark green,...
