Paris, France
Paris, France

Time filter

Source Type

Mounif E.,ENSAM | Bellenger V.,ENSAM | Mazabraud P.,CEA Le Ripault | Nony F.,CEA Le Ripault | Tcharkhtchi A.,ENSAM
Journal of Applied Polymer Science | Year: 2010

The identification of kinetic parameters controlling the crosslinking of Diglycidyl ether of bisphenol/isophorone diamine reactive system was achieved via optimization program (Inverse method) based on Fourier transform near infrared spectroscopy results. The reactivity ratio (k2/k 1) was determined using a new method based on the variation of amine conversion ratio versus epoxy conversion ratio. Gelation and vitrification of the reactive system were also analyzed. Time, temperature, transformation diagram was established to assess the rotational molding of this reactive system. © 2009 Wiley Periodicals, Inc.


Liang S.,University of Burgundy | Gning P.B.,University of Burgundy | Guillaumat L.,ENSAM
Composites Science and Technology | Year: 2012

Experimental investigations on flax and glass fabrics reinforced epoxy specimens, i.e. FFRE and GFRE, submitted to fatigue tests are presented in this paper. Samples having [0/90] 3S and [±45] 3S stacking sequences, with similar fibre volume fractions have been tested under tension-tension fatigue loading. The specific stress-number of cycles to failure (S-N) curves, show that for the [0/90] 3S specimens, FFRE have lower fatigue endurance than GFRE, but the [±45] 3S FFRE specimens offer better specific fatigue endurance than similar GFRE, in the studied life range (<2×10 6). Overall, the three-stage stiffness degradation is observed in all cases except for [0/90] 3S FFRE specimens, which present a stiffening phenomenon of around 2-3% which could be related to the straightening of the microfibrils. © 2012 Elsevier Ltd.


Chevalier D.,ENSAM | Cezard P.,ACM | Langlois L.,ENSAM | Bigot R.,ENSAM
Key Engineering Materials | Year: 2015

To reduce production costs and to improve performances of hot rolled products, an optimization of the production line is required. The rolling mill is one of the most influent steps on the internal quality of produced parts. In fact the process tends to reduce the size of defects during the strain. The production line composed by 24 stands has been implemented in a commercial simulation tool named FORGE®. First, a model has been developed and adjusted according to the industrial data. Then a parametric study was carried out in order to evaluate the influence of the process parameters on the internal quality of the rolled material. © (2015) Trans Tech Publications, Switzerland.


Obikane Y.,ENSAM | Khelladi S.,ENSAM
World Academy of Science, Engineering and Technology | Year: 2011

In the upstream we place a piece of ring and rotate it with 83Hz, 166Hz, 333Hz,and 666H to find the effect of the periodic distortion.In the experiment this type of the perturbation will not allow since the mechanical failure of any parts of the equipment in the upstream will destroy the blade system. This type of study will be only possible by CFD. We use two pumps NS32 (ENSAM) and three blades pump (Tamagawa Univ). The benchmark computations were performed without perturbation parts, and confirm the computational results well agreement in head-flow rate. We obtained the pressure fluctuation growth rate that is representing the global instability of the turbo-system. The fluctuating torque components were 0.01Nm(5000rpm), 0.1Nm(10000rmp), 0.04Nm(20000rmp), 0.15Nm(40000rmp) respectively. Only for 10000rpm(166Hz) the output toque was random, and it implies that it creates unsteady flow by separations on the blades, and will reduce the pressure loss significantly.


Ahmadi A.,ENSAM | Ben-Azza H.,ENSAM | El Bouanani F.,Mohammed V University
2014 World Congress on Computer Applications and Information Systems, WCCAIS 2014 | Year: 2014

This paper presents four new iterative decoders for two dimensional product block codes (2D-PBC) based on Genetic Algorithms. Each of these iterative decoders runs in parallel on a number of processors connected by a network. They have almost the same complexity as the conventional iterative decoder, but their performances are improved since at each iteration, they trap the better of extrinsic information computed by the elementary decoders running simultaneously on all processors. © 2014 IEEE.


Faquir S.,Abdallah University | Yahyaouy A.,Abdallah University | Tairi H.,Abdallah University | Sabor J.,ENSAM
2015 Intelligent Systems and Computer Vision, ISCV 2015 | Year: 2015

The significant increase in the prices of conventional energy sources and the public awareness of the need to reduce global warming have encouraged many countries to develop new systems based on renewable energies. Combining renewable energy sources with storage units to form a multi source system can provide a more economic, and reliable supply of electricity in all load demand conditions compared to a single-use of such systems. The energy balance between production and consumption should be carefully conducted while choosing the storage method to ensure the availability of power on demand and improve the dynamic behavior of the hybrid system. This paper presents a study of a HRES composed of Photovoltaic (PV) solar panels and a wind turbine as primary energy sources and batteries as storage units and proposes a computer algorithm based on type-1 fuzzy logic to control the energy between production and consumption and ensure the availability of power on demand. © 2015 IEEE.


Makhoul N.,ENSAM
Large Structures and Infrastructures for Environmentally Constrained and Urbanised Areas | Year: 2010

The extra cost of the measures taken to protect a building against seismic risk is higher concerning old buildings than new designed ones. But since more than 80% of buildings were designed before the new seismic codes, it is a huge heritage waiting to manage, with great priority. Sophisticated methodologies are emerging in Seismic Engineering, as the Performance Based Earthquake Engineering, PEER. We improved the decision analysis model, and we proposed a multidisciplinary approach dealing with different classes of buildings and different seismic regions to solve, without restriction, the particular case of France. It allows sharing the responsibility by all, in order to convince people to rehabilitate their structures by including them in the decision process.


Gournay P.,French National Laboratory of Metrology and Testing | Thevenot O.,French National Laboratory of Metrology and Testing | Dupont L.,French National Laboratory of Metrology and Testing | David J.M.,ENSAM | Piquemal F.,French National Laboratory of Metrology and Testing
Canadian Journal of Physics | Year: 2011

This paper reports on the current development of a new Thompson-Lampard calculable capacitor at LNE. The goal is to determine the von Klitzing constant R K at a significant level of uncertainty of about one part in 10 8. The comparison with other accurate measurements of h/e2 serves as a relevant test of validity of the theory predicting R K = h/e 2, a decisive issue within the context of the new SI. Conversely, assuming that this relation is exact, the measurement of R K and thus that of the fine structure constant can be used for testing quantum electrodynamics theory. The mechanical structure of the new LNE calculable cross capacitor has been designed and a new set of electrodes has been fabricated. The assembling of the calculable capacitor is in progress.


Ibrahimi M.,ENSAM | Arbaoui A.,ENSAM | Ouzizi L.,ENSAM | Aoura Y.,ENSAM
Proceedings of 2015 IEEE International Renewable and Sustainable Energy Conference, IRSEC 2015 | Year: 2015

This paper presents an embodiment design model of single-effect mechanical vapor compression (MVC) system. The main objective of this study is to define the specific power consumption and the specific heat transfer area of the MVC system, as a function of the need for freshwater. Mathematical models are established based on the functional analysis, the energy and mass balance equations as well as correlations of the thermophysical properties. The input parameters of model are the desired product flow rate, the brine/feed salinity and the feed seawater temperature. The design solutions are qualified using a quality index and they are defined by the temperature of brine and distillate streams as design variables. The overall design problem has been formulated as a Mixed Complementarity Problem (MCP) and solved with the PATH solver using the platform GAMS (General Algebraic Modeling System). The results demonstrate the influence of the design variables on the system architecture and its electric power consumption which define the quality index. A large gap between the design variables reduces the heat transfer area, but increases the specific power consumption of the vapor compressor. This study confirms that the MVC desalination concept is suitable for low product capacity of freshwater. © 2015 IEEE.


News Article | March 4, 2016
Site: www.nanotech-now.com

Abstract: GLOBALFOUNDRIES, a leading provider of advanced semiconductor manufacturing technology, announced today that Alain Mutricy has joined the company as senior vice president of the Product Management Group. In this role, Mutricy is responsible for the company’s leading edge and mainstream technology solutions and go-to-market activities for these differentiated products. Mutricy succeeds Mike Cadigan, who will transition to a newly created role as senior vice president of global sales and business development. “Alain is an accomplished senior executive with more than 25 years of experience in the consumer electronics, mobile, and semiconductor industries,” said GLOBALFOUNDRIES CEO Sanjay Jha. “He brings a strong portfolio of successes contributing to growth, profitability, and competitiveness for global product organizations, which will help him build on the strong foundation we have already established in our product management group. I am thrilled to welcome Alain to the GLOBALFOUNDRIES team.” Before joining GLOBALFOUNDRIES, Mutricy was founder and executive adviser at AxINNOVACTION, a consulting firm that promotes action to unlock and accelerate innovation in big organizations, as well as co-founder and CEO of Vuezr, which attempted to revolutionize mobile direct marketing by delivering product visual recognition to consumers’ mobile devices via augmented reality. From 2007-2012, Mutricy served as senior vice president of portfolio and device product management for mobile devices at Motorola Mobility Holdings, Inc., where he led a global team responsible for defining the company’s mobile devices product portfolio strategy and structure. He and his team advanced a strategic focus on Android-based smartphones, which included the widely acclaimed family of DROID™ by Motorola products. During his tenure at Motorola Mobility, Mutricy was also responsible for defining and directing the Mobile Devices business unit’s global strategy for silicon and software platforms, as well as leadership of a global R&D team responsible for designing and implementing integrated circuits, wireless chipset solutions, platform software, product software for non-CDMA products, and an ecosystem strategy for mobile devices. Prior to joining Motorola in 2007, Mutricy served at Texas Instruments for 18 years, where he was promoted to vice president in January 2002. From 2004 until his departure from Texas Instruments, Mutricy served as vice president and general manager for the company’s Cellular Systems Solutions business. In that role, he was responsible for commercializing and building a leadership position for the company’s wireless chipset solutions for GSM/GPRS/EDGE/3G and OMAP™ application processors. Prior to leading Cellular Systems Solutions, Mutricy was general manager for the Texas Instruments OMAP™ business, which he led from start-up status to global leadership between 2000 and 2004. Additionally, from the time he joined Texas Instruments in 1989, Mutricy was promoted through a series of general- management positions, each with increasing scope and responsibility in areas including sales, marketing and general management. Mutricy holds a master’s degree in engineering from ENSAM and an MBA from HEC Group—both in Paris. About GLOBALFOUNDRIES GLOBALFOUNDRIES is the world’s first full-service semiconductor foundry with a truly global footprint. Launched in March 2009, the company has quickly achieved scale as one of the largest foundries in the world, providing a unique combination of advanced technology and manufacturing to more than 250 customers. With operations in Singapore, Germany and the United States, GLOBALFOUNDRIES is the only foundry that offers the flexibility and security of manufacturing centers spanning three continents. The company’s 300mm fabs and 200mm fabs provide the full range of process technologies from mainstream to the leading edge. This global manufacturing footprint is supported by major facilities for research, development and design enablement located near hubs of semiconductor activity in the United States, Europe and Asia. GLOBALFOUNDRIES is owned by Mubadala Development Company. For more information, please click If you have a comment, please us. Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Loading ENSAM collaborators
Loading ENSAM collaborators