he research of analytical solutions for reliability assessment in dynamic context is not solved in the general case. Partial approaches exist in the case of particular hypothesis. The Monte Carlo simulation would be the only recourse, but there were no efficient tools allowing the simultaneous simulation of the discrete event evolution of the system and […]
10/02/2010 Présents: Pierre-André Gouge, Zohra Cherfi, Serge Bisson, Abdessamad Kobi, Christophe Simon23/02/2010 Présents: Z. Cherfi,S. Bisson, F. Guérin, A. Kobi, S. Cloupet, C. Simon, R. Chassagnon, K. Tanqueray, S. Rees, A. Todoskoff, A. Charki, M. Barreau, S. Verron, T. Tiplica, N. Boudaoud, A. Barreau, D. Bigaud Ces réunions se sont focalisées sur l »organisation du congrès. […]
There are two widely used process control techniques with the objective of reducing the process output variability. The first technique is Automatic Process Control (APC) that adjusts the process using information about its current level or deviation from a desired target. Examples of the APC actions for process adjustments include the minimum mean square estimate […]
Recently, adaptive CUSUM (ACUSUM) charts have been proposed for detecting a range of mean shifts efficiently by adjusting the reference value dynamically. However, if mean shifts are smaller than a minimum pre-specified shift level, the ACUSUM chart may perform poorly. To overcome this problem, we propose a length limit approach for detecting small mean shifts […]
Angelika Sonnek*, Dieter Scharitzer*, Christian Korunka** * University of Economics and Business Administration, Marketing Department Augasse 2-6, A-1090 Vienna – AUSTRIA angelika.sonnek@wu-wien.ac.at dieter.scharitzer@wu-wien.ac.at **University of Vienna, Institute for Psychology Liebiggasse 5, A-1010 Vienna – AUSTRIA christian.korunka@univie.ac.at Abstract: The objectives of this research are the development of an instrument for evaluation of effects of New Public […]
Ce travail concerne l’analyse en composantes principales (ACP) appliquée à la surveillance des structures composites munies d’un réseau d’éléments piézoélectriques. A cet effet, nous proposons un résidu DI indicateur d’endommagement basé sur le changement des valeurs propres des composantes principales combiné avec un coefficient de corrélation. L’efficacité de la méthode est testée sur des bases […]
The aim of this paper is to propose a new statistic for monitoring multivariate trend processes. We will focuses on the possible choices of more sensitive statistics than the classical Hotelling T2 statistic in the case of processes where incipient trends are considered. A comparative study based on simulations is presented. The performances of detection […]
Liste des articles présentés à QUALITA 1994 Nous recherchons les références des articles pour alimenter cette archive. Si vous disposez d »éléments à diffuser, contactez l »association.
Le présent article décrit une méthode de détection de défauts à l’aide de l’ACP. L’ACP permet de réduire le nombre de variables d’un problème par projection orthogonale d’un jeu de données. Le choix du nombre de composantes à conserver est discuté. Finalement, un indicateur de détection de fautes est présenté et est appliqué à un […]
An important issue in the validation of mechanical parts for vehicles is reliability assessment for high mileages, by means of tests. Since the tests should be as short as possible, and for parts subjected to degradation mechanism, such as wear or crack propagation, it would be appropriate using degradation measurements (such as mass loss or […]
