WorldCat Identities

Dessein, Gilles

Overview
Works: 42 works in 53 publications in 2 languages and 1,194 library holdings
Roles: Editor, Other, Opponent, Thesis advisor, Author
Publication Timeline
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Most widely held works by Gilles Dessein
Interaction's processes/Structures : Special topic volume with invited peer reviewed papers only by Moussa Karama( )

4 editions published in 2013 in English and held by 1,118 WorldCat member libraries worldwide

Volume is indexed by Thomson Reuters BCI (WoS).This volume is a collecting scientific results of several researchers in the fields of prediction and handling of interactions between structure and process. Research programs have the primary objective analysis of the interactions between processes and structures in modern production facilities. This book presents the results of several interdisciplinary projects, focusing on different manufacturing processes such as high speed machining or metals forming. It contains experimental studies and mathematical modeling of production processes and the interactions of the machine. New advanced experimental and innovative simulation approaches are also included. This special topic volume is Volume 698 of Advanced Materials Research. Fourteen papers shed light on the latest research in the production and handling of interactions between structure and process in modern production facilities. The book includes studies on manufacturing processes such as high speed machining and metals forming; experimental studies and mathematical modeling of production processes; and experimental simulation approaches. Some specific subjects treated include numerical modeling of the processes shaping composite cutting and high-speed cutting, the correlation between torsor measurements on the chip orientation, and chatter control in turning processes with a nonlinear energy sink. The book contains b&w images
Interaction's procesess/structures( Book )

3 editions published in 2013 in English and held by 23 WorldCat member libraries worldwide

Interaction's processes / special topic volume with invited peer reviewed papers only by Gilles Dessein( Book )

2 editions published in 2013 in Undetermined and English and held by 3 WorldCat member libraries worldwide

Simulation of machining errors of Bspline and Cspline by El Bechir Msaddek( )

1 edition published in 2016 in English and held by 2 WorldCat member libraries worldwide

An experimental study on the effect of high-pressure coolant on chip fragmentation during the turning of stainless steel by Vincent Wagner( )

1 edition published in 2019 in English and held by 2 WorldCat member libraries worldwide

Compensation of machining errors of Bspline and Cspline by El Bechir Msaddek( )

1 edition published in 2018 in English and held by 2 WorldCat member libraries worldwide

Usinage 5 axes de surfaces gauches caractérisées par un critère d'état de surface adaptatif by Thomas Breteau( Book )

in French and held by 2 WorldCat member libraries worldwide

Pre-hole diameter optimization in high speed drilling considering machining cost by Monia Ben Meftah( )

1 edition published in 2019 in English and held by 2 WorldCat member libraries worldwide

Experimental investigation of tool wear and its effect on TiSiN-coated ball-end mill geometry in high-speed milling by Rami Belguith( )

1 edition published in 2019 in English and held by 2 WorldCat member libraries worldwide

Qualification et optimisation de la précision d'une machine-outil à commande numérique by Gilles Dessein( Book )

2 editions published in 1997 in French and held by 2 WorldCat member libraries worldwide

CETTE THESE A POUR OBJET LA RECHERCHE ET L'OPTIMISATION DES DISPERSIONS OCCASIONNEES LORS D'USINAGES SUR MACHINE-OUTIL A COMMANDE NUMERIQUE. L'OBJECTIF EST LA MISE AU POINT D'UNE PROCEDURE D'IDENTIFICATION DES DEFAUTS ET UNE CORRECTION SYSTEMATIQUE DES PROGRAMMES DE COMMANDE NUMERIQUE. LA PREMIERE PARTIE DE CE TRAVAIL CONSISTE A MONTRER LES SOURCES POTENTIELLES D'ERREURS GENEREES PAR LES ELEMENTS CONSTITUANT UNE MACHINE-OUTIL A COMMANDE NUMERIQUE. L'ABSENCE DE MODELE LIANT LES EFFORTS ET LES DEFORMATIONS IMPOSE UNE DIRECTION D'ETUDE EXPERIMENTALE QUI PERMETTRA UNE ADAPTATION DIRECTE A UN CONTEXTE D'USINAGE. LA SECONDE PARTIE DU TRAVAIL SITUE LE CONTEXTE DE L'ETUDE ET RASSEMBLE LES DIVERSES EXPERIMENTATIONS QUI CARACTERISENT L'ENSEMBLE MACHINE - OUTIL - PIECE - MONTAGE D'USINAGE. L'ANALYSE EXPERIMENTALE EST DECOMPOSEE EN TROIS ORIENTATIONS ET UTILISE INITIALEMENT LA METHODOLOGIE PLAN D'EXPERIENCES. L'IDENTIFICATION ET LA QUANTIFICATION DES PARAMETRES INFLUENTS SE CONCENTRENT PROGRESSIVEMENT SUR LES PARAMETRES PONCTUELS DE LA MACHINE, LES CAS D'INTERPOLATION ISSUS DE GROUPEMENTS ANALOGIQUES ET L'EVOLUTION THERMIQUE DE LA BROCHE. DANS UNE TROISIEME PARTIE, LA CONFRONTATION DES RESULTATS EXPERIMENTAUX ET LEUR EXTRAPOLATION PERMET D'ENVISAGER LE TRAITEMENT D'UNE PIECE QUELCONQUE, A L'ISSUE DE LA MODELISATION DES PHENOMENES. LA METHODE DE CORRECTION ENGENDRE DES INTERVENTIONS SPECIFIQUES SUR LES PROGRAMMES DE COMMANDE NUMERIQUE, PAR L'INTERMEDIAIRE DE LA BANQUE DE DONNEES CARACTERISANT LA MACHINE, EN ADEQUATION AVEC L'USINAGE DE PIECES TYPES. LA DERNIERE PARTIE DE CE TRAVAIL PROPOSE UN TRAITEMENT AUTOMATIQUE PAR LE PROGRAMME D'OPTIMISATION. IL SE COMPOSE D'UN TRAITEMENT DES RESULTATS SELON L'ORIGINE EXPERIMENTALE, D'UNE MODELISATION ET D'UNE CORRECTION INTERACTIVE DU PROGRAMME DE COMMANDE NUMERIQUE
Analytical modeling of the CNC machine axis motion in high-speed milling with local smoothing by Mohamed Essid( )

1 edition published in 2019 in English and held by 2 WorldCat member libraries worldwide

Study and characterisation of surface integrity modification after ultrasonic vibration-assisted ball burnishing by Ramon Jerez Mesa( Book )

3 editions published between 2018 and 2020 in English and held by 2 WorldCat member libraries worldwide

This dissertation is an experimental research project into the mechanical effects of the ultrasonic vibration-assisted ball burnishing process on the surface integrity of surfaces machined through ball-end milling. Due to the lack of commercial tools able to perform this process, the study includes firstly the design and characterisation of a prototype to that effect. An experimental analysis is then undertaken, applying the process to AISI 1038 and Ti-6Al-4V surfaces of high industrial and aeronautical value. The experimental campaign is designed based on a Taguchi orthogonal array that includes five factors, namely: preload, number of passes, feed velocity, strategy and initial surface texture. Results are analysed in terms of topological characteristics, residual stress and hardness, in order to identify and understand the impact of process parameters on surface integrity, to define the best parameters for performing the process and to assess the positive effects caused by the introduction of vibrations as a means of assistance. Results reveal that the initial texture is the most influential parameter on all outcomes. Texture results show that the vibrations can enhance the roughness and texture results, as long as they have sufficient low initial amplitude. Furthermore, only the preload and number of passes influence the results, with a pair of values being found in all cases that serve a threshold from which further plastic strain is detrimental for the final surface topology. In terms of residual stress, all parameters are influential in the results, especially the burnishing strategy, through which a certain component of the residual stress tensor can be adequately reinforced. Finally, the burnishing operation proves to modify the hardness of deep layers down to 0.5 mm, applying the vibration-assisted process. The main conclusion is that the optimal parameters for performing the process are different with regards to the optimisation objective. Some useful combinations are proposed for performing the process depending on the desired target
The relationship between the cutting speed, tool wear, and chip formation during Ti-5553 dry cutting by Vincent Wagner( )

1 edition published in 2014 in English and held by 2 WorldCat member libraries worldwide

Expérimentation et modélisation de la micro-coupe pour une application au micro-fraisage by Romain Piquard( )

2 editions published in 2016 in French and held by 2 WorldCat member libraries worldwide

Les procédés de micro-fabrication connaissent actuellement une croissance importante dans les applications industrielles et pour des secteurs majeurs. Parmi les techniques d'usinage en micro-fabrication, le micro-fraisage est sans doute le plus polyvalent que ce soit en termes de matériau usiné ou de géométrie obtenue. La fabrication de micro-fraises est encore limitée par un certain nombre de paramètres (comme le rayon d'acuité d'arête) et demande alors à être optimisée. L'approche utilisée consistant à reproduire à petite échelle ce qui se fait de mieux à une échelle conventionnelle n'est alors plus forcément adaptée. Il en résulte que le micro-fraisage est un procédé encore mal maîtrisé (usure prématurée de l'outil, bris d'outil, trajectoire non maîtrisée, bavures...).L'objectif de la thèse est donc de comprendre les mécanismes mis en jeu lors de l'enlèvement de matière en micro-usinage et d'en établir un modèle permettant de prédire les efforts de coupe selon les conditions choisies et qui permettra par la suite de faciliter l'optimisation de la géométrie des outils coupantDans un premier temps, une étude expérimentale s'attache à observer la micro-coupe élémentaire d'un acier dur à l'aide de dispositifs réalisés dans le cadre de ces travaux. Un premier dispositif permet de mesurer les efforts d'usinage en micro-coupe élémentaire et un deuxième dispositif innovant permet d'étudier la formation du copeau par coupe interrompue.Par la suite, une démarche de modélisation de la micro-coupe élémentaire est proposée en complément de l'étude expérimentale. Une approche par loi de coupe basée sur les résultats des essais de micro-coupe élémentaire permet de modéliser les efforts d'usinage. En complément, des simulations numériques utilisant la méthode SPH donnent aussi des informations intéressantes sur la formation du copeau, notamment au niveau des zones de déformation.Enfin la loi de coupe associée à un modèle géométrique du micro-fraisage permet de prédire les efforts de coupe lors de l'usinage du même acier. Le modèle géométrique basé sur des travaux précédents a été complété pour prendre en compte la flexion d'outil ainsi que le faux-rond. Ce faux-rond est mesuré directement sur la machine à l'aide d'un moyen d'observation spécialement développé. Les résultats obtenus montrent une concordance entre les efforts expérimentaux et les efforts prédits
Etude fondamentale de l'assistance cryogénique pour application au fraisage du Ti6Al4V by Pierre Lequien( )

1 edition published in 2017 in French and held by 1 WorldCat member library worldwide

Résumé : Les principaux challenges de l'industrie du futur sont de satisfaire à toujours plus d'exigences en termes de développement durable, d'optimisation des coûts et des délais. Les secteurs industriels fabriquant des produits à haute valeur ajoutée tels que l'aéronautique et le spatial, sont dans une perspective continue d'amélioration des produits manufacturés et des procédés. L'emploi de matériaux tels que des alliages de titane ou les superalliages à base de nickel devient courant. Ils sont cependant « complexes à usiner ». Les difficultés comme l'usure prématurée des outils, les déformations de pièces ou encore les mauvaises qualités de surface deviennent problématiques. C'est dans cette perspective que l'assistance cryogénique en usinage peut répondre aux diverses problématiques. Cette technologie peut apporter les réponses aux exigences d'industrialisation : limitation des élévations de température, pas de nettoyage post-usinage et pas d'utilisation de fluides de coupe nocifs pour les opérateurs. Cela induit pourtant de nouvelles questions tel que l'acheminement du fluide cryogénique vers les zones souhaitées, l'optimisation du procédé ou encore l'impact du grand froid sur les outils et les pièces. De nouveaux verrous technologiques et scientifiques apparaissent. Cette thèse propose de les étudier
Caractérisation des perturbations d'usinage vers une optimisation du procédé et la mise en oeuvre d'une surveillance de l'usure d'outil dans le cas du TA6V by Quentin Lagarde( )

1 edition published in 2019 in French and held by 1 WorldCat member library worldwide

The work presented in this thesis aims at improving productivity when manufacturing TA6V parts. Knowledge and control of the milling process for this titanium alloy are a key challenge particularly for medium size companies like SOFOP who try to answer the increasing aeronautical parts market demand. The first section is focused on machinability criteria which are discussed through several scales. Then, following the couple tool-material method, working zones of two tools are determined in order to achieve productivity improvements. This results, obtained through laboratory tests have been faced with their industrial application and showed the strong links between milling paths and tool life. Influence of cutting speed and radial engagement has been investigated with a specifically developed experimental bench, equipped with a thermal camera. Indeed, the rst parameter is often considered as an adjustment variable for tool life during the validation phase and the other one is deeply linked with tool path. Temperature fields and tool wear have been correlated thanks to SEM and EDX images. Given the fact that the phenomenological study is not able to weight the impact of the tool path on tool life, a statistical approach hase been adopted. Based on cutting power signal collection, correlations have been established between signal features and tool life and led to the proposal of a verified experimental model allowing to consider two industrial applications : a tool life prediction method during the industrialization phase and an online tool life monitoring approach
Etude mécanique et métallurgique du perçage d'une nuance d'acier inoxydable austénitique réfractaire by Rabiae Arif( )

1 edition published in 2020 in French and held by 1 WorldCat member library worldwide

In the case of the turbocharger housings machining (milling, drilling and tapping operations) made of heatresistant austenitic stainless steel (HRASS), the tools life is greatly altered compared to standard steels ofequivalent mechanical resistance. Therefore, the machining cost of such pieces, including the cutting tools,constitutes a significant amount of their total cost. Concerning the drilling, the severity of the machining isincreased and even more since it relies on stepped, complex and expensive one-piece tools.This PhD project aims to develop a new cutting geometry optimized for the HRASS drilling. In thisperspective, a characterization of the cutting tool is carried out based on one hand on the local cutting forcesanalysis from a global cutting forces discretization during the drill tip penetration, and also on the initial chipformation. Then, an in-situ analysis of the cumulative strain hardening of the machined subsurface layer is alsocarried out using an identification of the incremental equivalent plastic strain. All the performed analysescontribute to the understanding of the strain hardening/machinability relationship for the tool life improvementof the HRASS dedicated drills
Proposition de stratégies de surveillance d'usinage en perçage de superalliage base nickel, application à l'usure de l'outil by Andrei Popa( )

1 edition published in 2012 in French and held by 1 WorldCat member library worldwide

The work presented in this thesis is a part of European project ACCENT and fits into the context of using process monitoring in the manufacture of critical parts for aircraft engines. The aim is to define a monitoring technique for the tool wear in the machining of the central bore of a high pressure disk made in nickel based superalloy. The major stages can be identified in our approach: identification of tool failure modes in drilling Udimet® 720 LI, defining the relationships between wear and measured physical quantities and finally, a proposal for monitoring strategies based on the previous results. In order to complete the objectives, an experimental protocol was defined. The experimental campaigns allowed us to characterize the drill wear and to define cartography of tool failure modes depending on cutting conditions tested. Moreover, the impact of machining disturbances (lubricant stop, change in percentage of lubricant emulsion, the position over the before hole, etc.) was studied. In the second part, the relations between the tool failure modes and monitoring signals recorded during the machining (forces, torque, power, vibrations, etc.) were identified. For this task, we focused on two directions: a straightforward explanation of signals evolution by physical phenomena and “black box” approach to develop wear models from a database obtained by statistical criteria extracts from the signals. This analysis also allowed the detection of certain machining disturbances using the physical quantities. These include an eccentricity of the tool in the tool holder and a chips evacuation problem. The third part concerns the signals sensitivity to detect the different phenomena and the definition of monitoring strategies which can be implemented. For each relation defined, a detection probability was determined. Further, we used signals in parallel to increase the robustness of detection. The probabilities were improved, with an assumption of independent signals (without calculating existing biases). Finally, the combination of the phenomenological approach to the so-called "statistical" has increased the robustness of the monitoring technique
Analyses expérimentales et modélisation de la formation de bavures dans l'alliage AlSi7Mg0,3+0,5Cu - Application en coupe orthogonale et en fraisage by Tristan Regnier( )

1 edition published in 2018 in French and held by 1 WorldCat member library worldwide

In a context of production lines optimization, parts quality and machine capabilities control is essential. Several studies have been carried out on machining burr formation but the mechanisms are not fully understood, although a strong link between burrs formation and cutting forces is established by several authors. Hence, controlling the cutting forces has two advantages: optimize the production lines and be used as input data for a burr height model. This study proposes to consolidate the knowledge on burr formation mechanisms during the exit of a tooth, and to predict cutting forces during high speed milling of the AlSi7Mg0.7+0.5Cu alloy. Various burr formation mechanisms are studied in orthogonal cutting. A new in situ measurement method allows to identify the statistical influence of some operational conditions on the evolution of some newly introduced geometrical parameters defining the burrs heterogeneously formed in the case of the studied alloy, whose behavior strongly depends on its local stress state as well as its microstructure. A displacement and strain field analysis using Digital Image Correlation, as well as a finite element model provide a better understanding of the burr formation mechanisms. Face milling is studied to model cutting forces and compare the forces produced during the exit of a tooth to the obtained burr morphologies. Finally, a burr height reduction strategy is proposed using a high feed mill
Amélioration de la productivité en usinage d'un titane réfractaire : le Ti5553 by Vincent Wagner( )

1 edition published in 2011 in French and held by 1 WorldCat member library worldwide

The work presented in this thesis fits the context of modeling and understanding of phenomena related of Ti5553 machining. The goal is to improve knowledge about material to provide optimal cutting conditions, optimal engagement and cutting geometry. We have identified several models allowing to describe the cutting process in tunining and milling. In terms of tool wear and usinability improvement in Ti5553 machining all studies showed a lack of information. Our approach focused towards in developing an alternative method to define the Johnson-Cook law constants based on machining tests and tensile tests to obtain the constitutive law adjusted to Ti5553 machining. The constitutive law was used cutting forces modeling for turning and milling involving the full range of tools used by the company (shapes, cutting geometries...). These models were allowed us the highlights the machining difficulties and propose suitable conditions. The third part focused on wear cutting tools mechanisms analysis where the differents degradation stage in turning and milling have been defined. Their relationships with the cutting process has been identified in order to propose a criterion of wear evolution. Part of this study is to identify the effect of engagement, cutting geometries and cutting conditions on tool wear. The last part concerns the industrial development where we present our work applications and extrapolations in our industrial context. We also tested one of the prospects of machinability improving (increase temperature) but without result. Finally, we addressed the problem of process monitoring on Ti5553 machining where we highlighted the difficulties related to the specifics on cutting process
 
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Interaction's processes/Structures : Special topic volume with invited peer reviewed papers only Interaction's procesess/structures Interaction's processes / special topic volume with invited peer reviewed papers only
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Interaction's procesess/structuresInteraction's processes / special topic volume with invited peer reviewed papers only
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English (18)

French (12)