University of Technology of Troyes

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Yann Dijoux
Yann Dijoux
Associate Professor
Institut Charles Delaunay - Team LM2S - ROSAS Department - CNRS, UMR 6281
Office H105

Phone : +33 3 25 71 58 04
Fax : +33 3 25 71 56 49

Version en français

 

Teaching

 

UTT engineering school

 

Undergraduate courses:  Linear algebra, Complex analysis.

Graduate courses (Industrial systems engineering degree,  SFeRE major (Operational Safety, Risks and Environment)):  Design of experimentsTechniques and  Methods in  Maintenance.

 

UTT Master degree in Optimization and Systems Safety

 

Stochastic Processes.

 

UTSEUS engineering school (Sino-European engineering school based at Shanghai University)

Linear algebra and Algorithmics.

 

Previous graduate courses:  Econometry, Data mining, Statistical Methods,  Random processes.

 

Research

 

Main  Research Interests

 

 My research deals with statistical models, methods and applications in reliability and maintenance analysis. Stochastic processes are considered to model multiple failure mechanisms (early life, ageing) associated with  several components (with functional and structural dependencies) and multiple maintenance actions (preventive or corrective). 

 

Research topics

  • Imperfect repair modelling, virtual age models.
  • Statistical estimation (frequentist and Bayesian inference).
  • Competing risks in maintenance analysis.
  • Criteria for maintenance model selection.
  • Lifetime prognosis.
  • Preventive maintenance scheduling optimization (condition-based or planned preventive maintenance).

 

Recent publications

I. Dewan, Y. Dijoux, "Modelling repairable systems with an early life under competing risks and asymmetric virtual age", Reliability Engineering and System Safety,  144, pp. 215-224, 2015.

Y. Dijoux, M. Fouladirad, D.T. Nguyen, "Bayesian Analysis of the Brown-Proschan model", Economic Quality Control, 30(1), pp. 9-20, 2015.

Y. Dijoux, O. Gaudoin,  "Generalized random sign and alert delay models for imperfect maintenance", Lifetime Data Analysis, 20, pp. 185-209, 2014.

Y. Dijoux, E. Idée, "Classes of Virtual Age Models Adapted to Systems With a Burn-In
Period", IEEE Transactions on Reliability, 62 (4), pp. 754-763, 2013.

E. Deloux, Y. Dijoux, M. Fouladirad : "Generalization of the Proportional Hazards model for maintenance modelling and optimization", Proceedings of the Institution of Mechanical Engineers, Part O : Journal of Risk and Reliability, 226 (5), pp.  439-447, 2012.

Recent refereed Proceedings

 

August 2015:  I. Dewan, Y. Dijoux, "Dependence and maintenance of series repairable systems", 21st ISSAT International Conference on Reliability and Quality in Design, Philadelphie, USA.

June 2015: F. Corset, Y. Dijoux : "A better-than-new repair model", 9th International Conference on Mathematical Methods in Reliability, MMR 2015, Tokyo, Japon.

January 2015:  D.T. Nguyen, Y. Dijoux, M. Fouladirad, "On application of an imperfect repair model in maintenance scheduling", 61st Annual Reliability and Maintainability Symposium, RAMS 2015, Palm Harbor, USA.

October 2014: P. Broy, C. Bérenguer, Y. Dijoux, R. Donat, H. Chraibi, "Dynamic Reliability: Safety assessment of complex hybrid dynamic systems for hydraulic applications", 19ème Colloque National de Maîtrise des Risques et Sûreté de Fonctionnement, Lambda-Mu 19, Dijon, France.

October 2014: D.T. Nguyen, Y. Dijoux, M. Fouladirad, "Résultats de l'inférence bayesienne pour le modèle de Brown-Proschan", 19ème Colloque National de Maîtrise des Risques et Sûreté de Fonctionnement, Lambda-Mu 19, Dijon, France.

June 2014:  I. Dewan, Y. Dijoux, "Modeling Repairable Systems with a Burn-in Period with Asymmetric Virtual Age", FISC Conference 2014, Kettering University, Flint, Michigan, USA.

June 2014:  D.T. Nguyen, Y. Dijoux, M. Fouladirad, "Virtual age distribution and Statistical inference of an imperfect repair model", 5th International Conference on Accelerated Life Testing and Degradation Models, ALT 2014, Pau, France.

September 2013: D.T. Nguyen, Y. Dijoux, M. Fouladirad, "Some results of Bayesian approach on Brown-Proschan model", 24th European Safety and Reliability International Conference, ESREL 2013, Amsterdam, Netherlands.

July 2013:  Y. Dijoux, O. Gaudoin, "Generalized random sign and alert delay models for imperfect maintenance", 8th International Conference on Mathematical Methods in Reliability, MMR 2013, Stellenbosch, South Africa.

July 2013: Y. Dijoux, M. Fouladirad, D.T. Nguyen : "Statistical inference for the Brown-Proschan maintenance model", 8th International Conference on Mathematical Methods in Reliability, MMR 2013, Stellenbosch, South Africa.

 

PhD supervision

 

Yacine Guessoum (EDF& Ministry of Research grant, 2009-2012): "Probabilistic modeling of the impact of maintenance actions on the behavior of electrical networks". Co-advisor  with  Anne Barros and  Antoine Grall.

 

Perrine Broy EDF& Ministry of Research grant,  2010-2014): "Safety Assessment of Complex Hybrid Dynamic Systems. Application to Hydraulic Systems". Co-advisor with  Christophe Bérenguer (Grenoble INP), Roland Donat (EDF R&D) and Hassane Chraibi (EDF R&D).

 

Dinh Tuan Nguyen (2012-2015): "Asymptotical properties and statistical inference under missing data for imperfect maintenance models". Co-advisor with  Mitra Fouladirad.

 

Projects

 

ANR project AMMSI : French National Research Agency project in partnership with Grenoble University, Pau University, the  University of Franche-Comté, SNCF and EDF. The aim of the project  is to enhance innovative developements in the field of statistical models in maintenance analysis.

 

ADEME project Venteea:  Smart-Grid project focused on the integration of wind energy in medium voltage distribution networks. Study of the impact of the new voltage regulation on the ageing and maintenance of electric power distribution systems.

 

 

Updated on October 2015