Intelligent feature based resource selection and process planning

Lien vers la version éditeur: https://www.inderscience.com/books/index.php?action=record&rec_id=755&chapNum=3&journalID=1022&year=2010This paper presents an intelligent knowledge-based integrated manufacturing system using the STEP feature-based modeling and rule based intelligent techniques to generate suitable process plans for prismatic parts. The system carries out several stages of process planning, such as identification of the pairs of feature/tool that satisfy the required conditions, generation of the possible process plans from identified tools/machine pairs, and selection of the most interesting process plans considering the economical or timing indicators. The suitable processes plans are selected according to the acceptable range of quality, time and cost factors. Each process plan is represented in the tree format by the information items corresponding to their CNC Machine, required tools characteristics, times (machining, setup, preparatory) and the required machining sequences. The process simulation module is provided to demonstrate the different sequences of machining. After selection of suitable process plan, the G-code language used by CNC machines is generated automatically. This approach is validated through a case

Proposition des modèles et de processus structurés pour le développement d’environnements collaboratifs synchrones : application aux réunions de revue de conception

Development of collaborative environment is a complex process. The complexity lies in the fact that collaborative environment development involves a lot of decision making. Several tradeoffs need to be made to satisfy current and future requirements from a potentially various set of user profiles. The handling of these complexities poses challenges for researcher, developers and companies. The knowledge required to make suitable design decisions and to rigorously evaluate those design decisions is usually broad, complex, and evolving. In Part-I of this thesis we investigate to formulate the general knowledge about: synchronous collaborative work which conceptualize the problem domain, synchronous collaborative environment which conceptualize the solution domain and synchronous collaborative environment evaluation which conceptualize the evaluation of whole or part of the proposed solution for the specified problem. This formulation has been done through literature study and leaded to the Concept Maps. The results generate three models: SyCoW (synchronous collaborative work), SyCoE (synchronous collaborative environment) and SyCoEE (synchronous collaborative environment evaluation). In Part-II of this thesis we proposed a process for selection/development of collaborative environment, where we demonstrate how SyCoW, SyCoE and SyCoEE support this process in different ways. Through the proposed process we present the development of new synchronous collaborative environment for design review meeting, named, MT-DT. MT-DT has been designed, developed and evaluated by the author in her PhD. MT-DT consist of a multi-touch table with specific 3D software application which support collaborative design review activities. The results of evaluation confirmed the usability of MT-DT and provide arguments for our choices which we made during development of MT-DT.Le développement d'un environnement collaboratif est un processus complexe. La complexité réside dans le fait que ce développement implique beaucoup de prise de décisions. De multiples compromis doivent être faits pour répondre aux exigences actuelles et futures d'utilisateurs aux profils variés. La prise en compte de cette complexité pose des problèmes aux chercheurs, développeurs et utilisateurs. Les informations et données requises pour prendre des décisions adéquates de conception et évaluer rigoureusement ces décisions sont nombreuses, parfois indéterminées et en constante évolution. Dans la partie-I de cette thèse, nous formulons les connaissances générales sur le travail collaboratif synchrone qui constituent l'état de l'art du domaine du problème. Nous pratiquons de même pour les environnements collaboratifs synchrones (domaine de la solution technique) et leur cette formulation s'appuie sur une étude de la littérature et conduit à la proposition de Schéma Conceptuel (Concept Maps). Nous en déduisons trois modèles: SyCoW (travail collaboratif synchrone), SyCoE (environnement collaboratif synchrone) et SyCoEE (évaluation environnement collaboratif synchrone). Dans la partie II de cette thèse, nous proposons un processus pour la sélection / développement d'un environnement collaboratif, où nous démontrons comment les modèles SyCoW, SyCoE et SyCoEE structurent ce processus. Grâce à la mise en œuvre de la démarche proposée, nous présentons le développement d'un nouvel environnement collaboratif synchrone pour une réunion de revue de conception nommé MT-DT. MT-DT a été conçu, développé et évalué par l'auteur dans sa thèse de doctorat. MT-DT est une application logicielle 3D spécifique à une table multi-touche qui assiste les activités de revue de conception collaborative. Les résultats de l'évaluation ont confirmé la convivialité de MT-DT et fournissent des éléments de validation des choix que nous avons faits au cours du développement de MT-DT

Intelligent feature based resource selection and process planning

Lien vers la version éditeur: https://www.inderscience.com/books/index.php?action=record&rec_id=755&chapNum=3&journalID=1022&year=2010This paper presents an intelligent knowledge-based integrated manufacturing system using the STEP feature-based modeling and rule based intelligent techniques to generate suitable process plans for prismatic parts. The system carries out several stages of process planning, such as identification of the pairs of feature/tool that satisfy the required conditions, generation of the possible process plans from identified tools/machine pairs, and selection of the most interesting process plans considering the economical or timing indicators. The suitable processes plans are selected according to the acceptable range of quality, time and cost factors. Each process plan is represented in the tree format by the information items corresponding to their CNC Machine, required tools characteristics, times (machining, setup, preparatory) and the required machining sequences. The process simulation module is provided to demonstrate the different sequences of machining. After selection of suitable process plan, the G-code language used by CNC machines is generated automatically. This approach is validated through a case

Visual and interactive tool for product development process enhancement: towards intuitive support of co-located project review

Part 2: PLM EcosystemInternational audienceProduct life management refers to every method or tools which participate to the collaboration of actors involved along the product life. The main topic concerns the organization of this cycle by mastering the evolution between its various phases. Collaboration is a main bottleneck since every phase will involve different experts. The main issue in collaboration is to ensure a good understanding of requirements and constraints of collaborators and to manage conflicts between different experts. Negotiations are expected to solve potential conflicts. This is usually done in project review where the experts must converge towards a common solution. In this paper we investigate the efficiency of a tool formalizing and structuring the project review activity. This tool takes advantage of emerging technologies, here a multi-touch table. We illustrate the discussion with a use case concerning the development of personal computer housing

'Myth plus Psychology’ in Death in Venice

In the twentieth century, writers turned their attention to the past and used myth in their works. It is a wrong notion to think of modernity as a rejection of tradition and just in search of novelty since there is a strong connection between modernity and tradition. Thomas Mann is different from his contemporaries in the attention he pays to the past as well as the present. This article examines the importance of the relation of Thomas Mann to both myth and psychology. The significance of the mixture between modernity and tradition, the contemporary elements and the mythological figures, myth and psychology in his masterpiece Death in Venice is going to be discussed