Youssef Benama

Bio: Youssef Benama is an academic researcher from University of Bordeaux. The author has contributed to research in topics: Reconfigurable Manufacturing System & Multiple-criteria decision analysis. The author has an hindex of 4, co-authored 6 publications receiving 29 citations. Previous affiliations of Youssef Benama include Centre national de la recherche scientifique.

Supporting make or buy decision for reconfigurable manufacturing system, in multi-site context

Abstract: The make or buy decision is a strategic issue. When looking for finding out which components or products should be manufactured or externalized then buy, capacity for human and technical resources at the workshop level as well as costs of the externalization are key questions to be answered. In the case of mobile manufacturing systems that are movable between various locations, long term strategic aspects must be considered when addressing the make or buy decision problem. This paper aims to provide a structured make or buy decision model, adapted for reconfigurable manufacturing systems with strong mobility constraints. An industrial application case is provided to illustrate the presented method.

Framework definition for the design of a mobile manufacturing system

Abstract: The concept of mobile manufacturing systems is presented in the literature as an enabler for improving company competitiveness by cost reduction, delay respect and quality control. In comparison with classical sedentary systems, added characteristics should be taken into consideration, such as the system life phases, the dependency to the production location, human qualification as well as means supply constraints. Such considerations might be addressed as soon as possible in the design process. This paper aims at presenting a contribution for the design of mobile manufacturing systems based on three analysis: (1) an analysis of the mobile manufacturing system features (2) an identification of the attributes enabling the system mobility assessment, and (3) the proposal of a framework for mobile production system design considering new context-specific decision criteria.

Formalisation de la démarche de conception d'un système de production mobile : intégration des concepts de mobilité et de reconfigurabilité

Abstract: Dans cette these nous analysons dans quelle mesure le concept de mobilite peut etre pris en compte dans la demarche d'analyse et de conception de systemes de production. Notre apport vise a formaliser la demarche d'analyse et de conception de ce dernier, explicitant les decisions a prendre, les informations necessaires et les criteres de decision a mettre en place. Dans cet objectif, deux niveaux d'analyse ont ete distingues : un niveau local concernant un site de production et un niveau global comprenant un ensemble de sites.Le premier niveau local considere un seul site de production. A ce niveau nous avons propose une approche prenant en compte les caracteristiques du site de production. Dans notre contexte, le choix de la localisation geographique de production est impose par le client. De ce fait, la conception du systeme de production doit s'adapter a cette contrainte. D'un point de vue conception, quatre questions sont abordees : (1) dans quelle mesure le concept de mobilite peut etre integre dans une demarche de conception de systeme de production mobile ? (2) quelles caracteristiques de l'environnement de production doivent etre prises en compte ? (3) comment determiner ce qu'il faut produire sur site ou ce qu'il serait opportun d'externaliser ? et (4) compte tenu des informations obtenues quelle est la meilleure configuration du SPM a envisager et selon quels criteres de choix ? La reponse a ces questions conduit a la proposition d'une configuration du SPM adaptee pour un seul site de production.Le deuxieme niveau global traite la problematique de mobilite successive multi sites. En effet, pour etre rentabilise le systeme de production doit etre mobilise sur plusieurs sites de production. A chaque changement de site de production, une reconfiguration du systeme de production s'impose en se basant sur la configuration existante (version i-1). LaThese de Youssef BENAMAreconfigurabilite concerne d'une part l'architecture interne du systeme (choix des machines, recrutement de nouvelles equipes locales, etc) et d'autre part l'organisation de la chaine d'approvisionnement du SPM (faire en interne ou externaliser, fournisseur local, etc.). A ce niveau global d'analyse, nous proposons deux modeles d'analyse : (1) un premier modele pour l'analyse de la reconfigurabilite interne. Ce modele d'analyse permet d'adapter le nombre de lignes de production et le nombre d'equipes en fonction d'un scenario de demande (localisations geographiques, capacite necessaire par site). L'originalite de notre proposition consiste d'une part en l'evaluation des couts de reconfiguration necessaires et d'autre part l'appreciation du niveau d'adequation de la configuration proposee avec le contexte du site de production via l'utilisation de l'indicateur de mobilite. (2) Le deuxieme modele d'analyse concerne la reconfigurabilite de la chaine d'approvisionnement amont du SPM. Il consiste en une adaptation du modele d'aide a la decision "faire ou faire faire" par l'integration d'un cote de l'importance du site de production et d'un autre cote des specificites de chaque site de production.La demarche d'analyse proposee est illustree sur le cas industriel concernant la conception d'une usine mobile pour la fabrication et l'installation sur site de composants de centrales solaires thermodynamiques.

Reconfigurable manufacturing system design: The case of mobile manufacturing system

Abstract: Mobile manufacturing is an enabler to increase the possibility to change and to adapt to altering needs, where the geographical position is not fixed. The main idea with the mobile manufacturing concept is to easily and quickly reuse manufacturing capacities between different orders or projects. This paper examines the concept of mobile manufacturing system by addressing issues related to manufacturing system mobility management. Review of reconfigurable manufacturing system is conducted. Issues as reconfigurable manufacturing system design in the special context of multi-site environment are discussed.

The layout design in reconfigurable manufacturing systems: a literature review

Abstract: The layout is an important issue in the design of manufacturing systems. In conventional systems, the layout rarely changes after the initial design. However, as the market demands are changing more frequently, layout configurations must be capable of reconfiguring the arrangement of resources to suit new production requirements, while minimising material handling and relocation costs and maximising savings in material flow and inventory costs. This paper presents a literature review on the layout design of reconfigurable manufacturing systems (RMS), focusing on reconfigurable layouts, which have been attracting increasing attention in recent years. A systematic literature network analysis was applied to identify trends, evolutionary trajectories and key issues that are influencing the development of knowledge in this field of study. The results are analysed and discussed using a bibliometric and a chronological citation network analysis. The major findings of this research includes (1) the layout design of RMS must be integrated in the process of RMS design, which, in turn, should be considered as a cyclic process, instead of divided into phases. (2) The core characteristics of reconfigurability and the layout design cannot be dissociated. (3) Operational performance measures are rarely considered in the reconfigurable layout problem, despite their importance. (4) Optimisation approaches have been widely used to solve the reconfigurable layout problem. However, they might not be the most suitable approach to deal with the uncertainty and variability present in manufacturing environments in which reconfigurable layouts are required. Finally, this paper identifies gaps in the literature and suggests directions for future research.

Moveable Production Systems for Sustainable Development and Trade: Limitations, Opportunities and Barriers

Abstract: It has been claimed that technological advances will make it possible to make anything anywhere and to do so sustainably. In particular, making anything anywhere would increase the diversity of locations and participants involved in production, with positive effects for sustainability. For example, increasing the diversity of locations can reduce the long-distance transportation of materials and goods, which can improve the ecological sustainability of production. At the same time, increasing the diversity of people included in manufacturing can contribute to the spread of manufacturing communities, which can improve the social sustainability of production. However, physical production continues to be dominated by the same countries that have dominated global manufacturing in recent decades. Meanwhile, trade imbalances between rich and poor countries are similar to those of the past. In this paper, limitations and opportunities are explained for moveable production systems to increase the diversity of locations and participants in global production and trade. In addition, potential geopolitical barriers to the deployment of moveable production systems are explained.

Evolving manufacturing mobility in Industry 4.0: the case of process industries

Abstract: The purpose of this paper is to present an approach to incorporating mobility into continuous manufacturing following the advent of Industry 4.0 (I4.0).,The investigation is based on a year-long canonical action research into a paper-manufacturing company implementing core I4.0 technologies.,The findings show how to: classify manufacturing mobility strategy based on the dimensions of team, task and control; design business processes enabled by mobile cyber–physical resources; involve different stakeholders in modeling mobility; and create a comprehensive guide to assist in implementing the mobile digitalization required by I4.0.,Despite the complexity, richness and depth of the insights obtained in this research for mobility management in process industries, this inquiry was conducted in a single organization.,As the fourth industrial revolution encourages decentralization and increased interaction between humans and machines, this paper presents a model to capture the mobility potential in manufacturing. The tools proposed in this research can be used to steer investments in industry transformations that fuse the physical and digital worlds, overcoming mobility constraints.,Theoretically, this paper expands the concept of manufacturing mobility in I4.0. In practice, it proposes a participative roadmap to assist technology management in increasingly decentralized environments, identifying the intertwined network of cyber–physical actors, processes and services.