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Williams I.,City University London | Shirvani B.,City University London | Mourier J.M.,Ecole dIngenieurs en Genie des Systemes Industriels
Key Engineering Materials

A research investigation is presented which discusses the practicality of using several image processing and knowledge based techniques for the measurement and classification of cold rolled steel sections. Image analysis techniques can be applied to many different applications and assessing the quality and the accuracy of cold roll formed steel sections is no exception. The operations detailed within this paper are both traditional image processing methods and novel neural network based techniques which are combined together to give a bespoke alternative to the manual processing currently employed to test these sections. The results show the suitability of using image analysis and image processing to aid in the quality control of cold steel roll forming and initial tests have demonstrated great potential for this work. © (2011) Trans Tech Publications. Source

Willis M.R.,University of Swansea | Broudic M.,Ecole dIngenieurs en Genie des Systemes Industriels | Haywood C.,University of Swansea | Masters I.,University of Swansea | Thomas S.,Tidal Energy Ltd
Renewable Energy

Understanding the effect of marine energy development on the underwater noise levels in a proposed installation area forms a crucial part of any Environmental Impact Assessment. This paper uses boat-based hydrophone survey data taken from an area subject to tidal currents up to 3 m s -1 and determines how the background noise levels change with tidal flow and flow direction. It was found that a more meaningful expression of background noise was gained by reference to "Power level" as measured by the Root Mean Square of the spectrum. Hydrophone measurements were taken during low season (with respect to other maritime activity) and in high season over the entire tidal cycle. Background noise levels ranged between 72 and 108 dB re 1 μPa RMS with higher sound pressure levels occurring at frequencies below 100 Hz. Background noise levels increased with increasing tidal flow and were higher on ebb tides than flood tides. © 2012 Elsevier Ltd. Source

Kerneis J.,Ecole dIngenieurs en Genie des Systemes Industriels | Kerneis J.,Laboratoire Danalyses Of Surveillance Et Dexpertise Of La Marine | Kerneis J.,University Blaise Pascal

This article establishes the expression of particle flux, emitted in the vacuum by an isotropic point source through a plane surface. The equation is then compared with numerical results obtained in some examples by using symmetries. An application is proposed for a cylindrical detector (non-planar surface). Complements are given in conclusion. © EDP Sciences, 2012. Source

Agency: Cordis | Branch: FP7 | Program: CP-IP | Phase: GC.NMP.2013-1 | Award Amount: 11.49M | Year: 2013

Li-ion technologies initiated in the 90 at a fast development pace thanks mainly to emerging ICTs with more than 20 GWh sold in 2010. Soon, it appeared as a credible technology for electrical vehicles as it could provide average energy densities of about 140 Wh/kg. However and since then,major breakthroughs have been expected to reach higher storage levels of 250 Wh/kg on battery system level with an acceptable lifetime of 3000 cycles in order to develop an affordable economical business plan for car batteries. MAT4BAT builds-up its EVs battery strategy on advanced materials and pilot line processes, proposing three novel concepts of cells initiating from a state-of-the art combination of cell materials (NMC/Carbonate liquid electrolyte/Graphite). MAT4BAT will address all critical ageing mechanisms associated to this technology and having direct impacts on product lifetime & safety by implementing two work programs for Battery Assessment (#1) and Battery Technologies (#2). Program #1 will set a framework to define critical charging modalities for a battery system during practical use and associated testing tools & methods for relevant functional performance & lifetime assessment. Within this framework, the program #2 will implement three generations of cells with a focus on electrolytes which will be steadily transformed from Liquid to Gel to All-Solid state electrolytes in order to promote substantial gain in cell lifetime and safety by preventing degradations and hazards and improving energy density with a separator-free cell (all-solid state electrolyte). 100 state-of-the-art commercial cells will be assessed to define normal and critical charge/discharge conditions of testing with appropriate testing protocols. Besides,materials increments will be screened out on coin-cells prior a benchmarking of most promising materials at full cells level. Eventually,(10-40 A.h) prototypes will be produced to validate MAT4BAT best technologies against quantified objectives.

Ecole dIngenieurs en Genie des Systemes Industriels | Entity website

Mastre Spcialis Ingnierie, Economie et Nouvelles Technologies pour la construction lInternational (IENTCI) Le Mastre spcialis IENTCI est une formation offerte conjointement par lEIGSI La Rochelle, cole dingnieurs gnralistes, et lEI.CESI ...

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