ARSLANE Mustapha

Douadi Mokhtar

Etude de l’interface HMI SINUMERIK 828D de la machine CNC à 4 axes

BEN HAMIDAT FARES , CHARIF ABDELGHANI, CHENENE ABDELKRIM

ETUDE ET REALISATION D'UN COLLECTEUR ECOLOGIQUE INTELLIGENT DE DECHETS

BOUZIDI MOHAMMED , BELAID ABDBASSET, MOUADH BOUDJELALL

MODELISATION ET FABRICATION D’UN DISSIPATEUR DE CHALEUR POUR CIRCUITS ÉLECTRONIQUES

GHADRI WALID , BRAKHLIA AKRAM

PROGRAMMATION ET REALISATION D'UN ACCOUPLEMENT MECANIQUE FLEXIBLE SUR MOCN A 3 AXES

This study investigates drilling-induced damage in hybrid composites, specifically examining the interplay between cuttingparameters and hole delamination. Three drill types—high-speed steel (HSS), 5% cobalt-coated high-speed steel (HSS-Co5),and solid carbide—are analyzed for their distinct impacts. The research underscores the substantial influence of feed rate androtational speed on delamination, noting that increased feed rates exacerbate the issue. Notably, HSS drills exhibit superiorperformance in mitigating delamination compared to other types. The study unequivocally demonstrates that operating theHSS drill at lower feed rates and rotational speeds significantly minimizes delamination, achieving remarkable results at afeed rate of 0.04 m/rev and 1592.35 rpm. While rotational speed’s consistent significance is limited, with the rotation speed2388.53 rpm, the delamination factor of the HSS drill recorded the smallest values with all the cutting conditions of the testscarried out. These insights emphasize the critical need for optimized cutting parameters when drilling hybrid composites,providing valuable guidance for engineering applications and materials science.

Citation

ARSLANE Mustapha , , (2024-01-05), Assessment and analysis of drilling‑induced damage in jute/palm datefiber‑reinforced polyester hybrid composite, Biomass Conversion and Biorefinery, Vol:200, Issue:, pages:1750-1780, Springer

Currently, there is a notable attraction within the industry towards biocomposites, driven by the increasing fascination with natural fiber-reinforced composites (NFRCs). These NFRCs offer remarkable benefits, including cost-effectiveness, biodegradability, eco-friendliness, and favorable mechanical properties. As a result, the manufacturing processes of natural fiber reinforced polymer (NFRP) composites have garnered attention from both industrial professionals and scientists. The emergence of these eco-friendly materials in the automotive and aerospace industries has sparked interest in understanding their production techniques. However, the machining processes of NFRP composites pose significant challenges due to the complex structure of natural fibers, necessitating thorough studies to address these issues effectively. This research paper presents a comprehensive investigation on surface roughness during the milling process of Alfa/epoxy biocomposites. A set of 100 experimental trials was conducted to test the surface roughness, and analysis of variance (ANOVA) was used to assess the impact of cutting parameters and chemical treatment on surface quality. To develop a predictive model for surface roughness, a hybrid approach called ANN-GA (artificial neural networks-genetic algorithms) is proposed in this research. This approach combines ANN and GA to determine an optimal neural network architecture. The performance of the ANN-GA model is compared to the Levenberg–Marquardt backpropagation (LM) algorithm. ANOVA results show that the feed per revolution have a significant influence on surface roughness, followed by the chemical treatment of fibers, while machining direction has a smaller effect. The ANN-GA model demonstrates good accuracy in surface roughness prediction compared to the LM algorithm.

Citation

ARSLANE Mustapha , , (2023-12-28), Enhanced investigations and modeling of surface roughness of epoxy/Alfa fiber biocomposites using optimized neural network architecture with genetic algorithms, The International Journal of Advanced Manufacturing Technology, Vol:3, Issue:, pages:1700-1720, Springer

Nowadays, with regard to many environmental problems, the development of environmentally friendly materials such as natural fiber composites is a real alternative to synthetic fibers. They have many interesting advantages such as their availability, their low cost, their low density, their biodegradable character, their specific resistance properties and their low impact on the environment. The present paper is aimed at fabricating and machining of an epoxy composite material reinforced with Alfa (Stipa tenacissima L.) fibers. The full factorial analysis was used to assess the effect of cutting parameters such as cutting velocity and feed rate on the arithmetic roughness Ra of machined surfaces obtained by down milling and up milling operations. For this purpose, a two flutes high-speed steel (HSS) cutting tool was used. The results showed that the up milling mode provides better surface roughness than down milling mode for almost all machined specimens. The feed rate is the main factor affecting the surface roughness, with a contribution of about 90%. The worst values of arithmetic roughness were observed, at low feed rate (0.05 mm/rev) regardless of the cutting velocity. The results also showed that machining parallel to fibers direction (0°) offers better surface roughness than machining perpendicular to fibers direction (90°). Microscopic and SEM images show some defects such as matrix cracking, cavity, fibers breakage, loss of matrix, fluffing, and thermal damage.

Citation

MADANI Grine , Mohamed SLAMANI , ARSLANE Mustapha , MANSOUR Rokbi , , (2023-08-16), Investigation of the machining behavior of unidirectional Alfa (Stipa tenacissima L.)/epoxy composite material, The International Journal of Advanced Manufacturing Technology, Vol:128, Issue:, pages:3183–3196, Springer

Pour les montages d’usinage destiné pour les pièces de forme complexe, l'optimisation des appuis de positionnement et les éléments de serrage est la première étape de conception qui doit être remplit. Cela permet d'assurer un maintien et un positionnement corrects et de réduire les erreurs géométriques de la pièce pendant le processus d'usinage. Dans ce papier, une optimisation par algorithme génétique (AG) a été présentée dans le but de choisir les positions optimales des appuis de localisations d'une ailette mobile de turbine à gaz dans un dispositif d'usinage, en se basant sur les coordonnées plückeriennes.

Citation

ARSLANE Mustapha , ,(2022-10-26), OPTIMISATION PAR ALGORITHME GENETIQUE (AG) DE SYSTEME D'ISOSTATISME D'UNE AILETTE DE TURBINE A GAZ,1ère Conférence de Mécanique appliquée à l’Aéronautique (CMA’1),ECOLE SUPERIEURE DES TECHNIQUES DE L’AERONAUTIQUE CHAHID RAHALI MOUSSA

Surface roughness plays a significant role in the performance of finished components. Hemispherical milling is usually used to achieve high surface quality, especially in components with complex geometries. However, the surface quality produced is strongly affected by the milling strategy chosen. Different milling strategies can be applied depending on the cutting conditions chosen for hemispherical milling. This paper investigates the effect of the milling direction on the surface roughness of a nickel-based superalloy. A single sweep finish milling parameter is tested using a hemispherical carbide tool. This milling operation was applied to a cylindrical surface segment of a support for horizontal positioning of a gas turbine blade in two distinct directions. A longitudinal direction parallel to the axis of rotation of the cylinder is first tested followed by a test in the transverse direction which covering the entire perimeter of the cylinder. In order to carry out a sufficient number of experiments to draw meaningful conclusions, a certain number of cutting parameters are tested including the extra thickness, the axial and radial pitch of the cut, the feed rate and tool diameters. The two milling strategies are considered and a mathematical model of the surface roughness is established and experimentally validated. Results show that milling along the longitudinal direction provides better roughness values compared to the transverse direction.

Citation

ARSLANE Mustapha , ,(2022-09-10), Effect of the machining strategy on the surface roughness in hemispherical milling of nickel-based superalloys (IN 718),1st International Conference on Innovative Academic Studies,Konya, Turkey

In the manufacturing industry, there are many types of parts with complex shapes that have various functions. Turbine blades are one of the most important components of gas turbines. However, these blades have complex shapes and irregular surface curvature which make them difficult to machine. The production of this type of parts is so complicated and requires high control of the machining process, advanced CNC programming, innovative tools and special fixtures to hold exactly and rigidly in a single position of the part during the machining. This work addresses the challenge of machining parts with complex geometry by developing and producing a dedicated machining fixture for holding a gas turbine blade. The first novelty of this work lies in the application of the method of Plückeriennes coordinates to choose the placement of the locator of parts of complex shape. The choice of the location of the locator during the fixture design process is made based on the maximization of the determinant and the minimization of the condition number of the location matrix (information matrix). The second novelty lies in the optimization approach used. The latest innovation is in the developed and manufactured machining fixture. The performances of the developed machining fixture in terms of repeatability of localization are evaluated on the basis of the concept of small displacement torsor (SDT). The results show the validity of the developed machining fixture.

Citation

ARSLANEMustapha , ,(2022-01-11); CONTRIBUTION A L’USINAGE DES PIECES DE FORMES COMPLEXES SUR MACHINE-OUTIL A COMMANDE NUMERIQUE,University of M'sila,

In the manufacturing industry, there are several types of parts of complex shapes owning various functions. The turbine blades (buckets and vanes) are one of the most important components in gas turbines. However, these blades have complex shapes and irregular surface curvature which make them difficult to machine. Production of such kind of parts is so complicated and requires a high control of machining process, advanced CNC programming, innovative tools, and special fixtures allowing to maintain exactly and rigidly in a unique position of the part during machining. In order to enhance productivity and reduce operation time, thereby increasing parts quality, the machining fixture has to fulfill several requirements such as allowing a correct location with security and repeatability of the workpiece as well as maintaining conformity and interchangeability of the machined parts. This paper addresses the challenge of machining complex geometry parts by development and realization of a dedicated machining fixture (MF) for holding a mobile blade of a gas turbine. The first novelty of this work is in the application of the Plückerian coordinates method for choosing the locator’s placement of complex-shaped parts. The choice of the locator’s placement during the design process of the fixture is performed based on the maximization of the determinant and minimization of the condition number of the locator matrix (information matrix). The second novelty is in the optimization approach used. The last novelty is in the developed and fabricated machining fixture. The performance of the developed fixture in terms of localization repeatability is evaluated based on the small displacement torsor (SDT) concept. Results show the validity of the developed fixture.

Citation

ARSLANE Mustapha , , (2021-04-01), Development and validation of a machining fixture for complex-shaped components based on Plückerian matrix approach and SDT concept., The International Journal of Advanced Manufacturing Technology, Vol:114, Issue:, pages:1697–1716, Springer

Les ailettes turbines soient fixes ou mobiles sont l’un des composants le plus important dans les turbines à gaz, une ailette peut être définie comme étant le moyen de transfert d’énergie des gaz vers le rotor turbine. Les ailettes turbine ont une géométrie complexe qui se réfère à la géométrie de forme libre. L’usinage de ce type de pièces est difficile et demande des montages spéciaux permettant de lier et positionner précisément et solidement la pièce dans le référentiel de la machine-outil. Il y’a une nécessité d’avoir des montages non encombrés et simple à manipuler en but de minimiser d’une part les coûts et les temps de réalisation de ces montages, et d’autre part, réduire les temps montage/démontage ainsi que les taches de vérification des pièces à usiner au moyen de ces montages. Ce travail consiste à concevoir et réaliser un dispositif de maintien d’une ailette mobile d’une turbine à gaz. Ce dispositif pourra se considérer comme un montage d’usinage pilote pour d’autres montages d’usinage dans la chaine de production.

Citation

ARSLANE Mustapha , ,(2018-11-28), Conception et fabrication d’un montage d’usinage pour ailettes mobiles d’une turbine à gaz,International conference on advanced mechanics and renewable energies,BOUMERDES

Dans l’industrie, il existe plusieurs types de pièces de formes complexes possédant différentes fonctions. Les ailettes turbines soient fixes ou mobiles sont considérées comme des pièces de forme complexe et sont l’un des composants le plus important dans les turbines à gaz. Cependant, ces ailettes regroupent la plupart des caractéristiques les plus difficiles à usiner. L’usinage de ces ailettes demande une bonne maitrise du procédé d’usinage, une programmation FAO avancée, un outillage novateur capable d'absorber les vibrations et des montages spéciaux permettant de positionner précisément et maintenir solidement la pièce durant l’usinage dans l’espace de travail de la machine-outil. Ce travail consiste de donner une contribution dans le domaine de l’usinage des pièces de formes complexes par la réalisation d’un dispositif de maintien d’une ailette mobile d’une turbine à gaz. Ce dispositif pourra se considérer comme un montage d’usinage pilote pour d’autres montages d’usinage dans la chaine de production.

Citation

ARSLANE Mustapha , ,(2018-10-23), Réalisation d’un montage d’usinage pour les pièces de formes complexes,International seminar in industrial engineering and applied mathematics,Université 20 Août 1955 / SKIKDA