Morega, A.M.1, Ordonez, J.C.2
1 Department of Electrical Engineering, POLITEHNICA University of Bucharest, Bucharest, Romania
2 Department of Mechanical Engineering and Center for Advanced Power Systems, Florida State University, Tallahassee, FL
The armature of a High Temperature Superconductor (HTS) motor is usually an AC copper air winding mounted in an iron-less stator. This unconventional winding is the siege of intense power dissipation by Joule and variable magnetic field effects, and has to be thoroughly designed to provide for the thermal stability of the HTS motor. For a more detailed knowledge of the thermal field beyond ...
Thermo-mechanical simulation of a laboratory test to determine mechanical properties of steel near the solidus temperature
Reiter, J., Pierer, R.
Christian Doppler Laboratory for Metallurgical Fundamentals of Continuous Casting Processes (CDL-MCC), Leoben, Austria,
Continuous casting (CC) is nowadays the dominating technology in the transformation from liquid to solid steel. The present paper describes a laboratory test method, the so-called Submerged Split-Chill Tensile (SSCT) test, which allows a process-near tensile test on solidifying steel in order to estimate the strength and the crack susceptibility of the strand shell. This test has been ...
Rouquette, S.1, Jialin, G.2, Le Masson, P.2, Tahar, L.2
1 Université de Technologie de Troyes, Laboratoire des Systèmes Mécaniques et Ingénierie Simultanée (LASMIS),TROYES
2 Centre de Recherche de l’Université de Bretagne Sud, Laboratoire d’Etudes Thermiques, Energétiques et Environnements (LET2E), LORIENT
In this communication, an electron beam welding process is studied. The work focused on the identification of the power density and the position of a gaussian heat source. The Levenberg-Marquardt method is employed to solve the inverse heat source problem. The welded material is cut in several planes and the identification is performed for each planes. Then, a pseudo 3D heat source is ...
IEMN, Institut d’Electronique, de Microélectronique et de Nanotechnologie, UMR CNRS 8520, USTL Université des Sciences et Technologies de Lille, Villeneuve d’Ascq, France
The BioMEMS (Bio-Electro-Mechanical Systems) have become of considerable interest because they constitute a converging solution for many pluridisciplinary studies. The different covered fields are the biology (single cell, proteins, enzymes, neurons…), the chemistry (polymers), microelectronics and the microtechnologies associated with. Devices whose aim is the study of biological entities are ...
Berthier, J., Chatelain, F.
Polymerase chain reaction is the most usual way to amplify DNA strands for detection and biorecognition. However efficient biorecognition requires to perform many different PCRs at the same time. We present here a new concept of simultaneous PCRs in capillary tubes and more specifically the dimensioning of such a microsystem. The concept consists in performing different PCRs in annular rings ...
A component used in RF-MEMS systems is the electrostatically actuated shunt switch. We show how this type of switch can be simulated using a simple mechanical FEMLAB model where electrostatic forces are modelled by a pressure load. The static as well as dynamic properties of the switch are analysed, e.g. static pull in and pull out voltages and displacements, dynamic switch up and down times ...
Fichet, D.1, Lesage, F.1, Ventenat, V.2, Latifi, M.A.2
1 Laboratoire des Sciences du Génie Chimique, CNRS-ENSIC, Nancy Cedex, France
2 Centre de recherche Decathlon, Villeneuve d’Ascq, France
This paper deals with experimentation, modelling, simulation and optimisation of a Moisture Management Tester (MMT) which is used to determine the liquid spreading and transfer rates of a fabric. A 3D model was developed and implemented within FEMLAB. It consists of partial differential equations describing the mass balance of water adsorbed on the fibres and water moving in the free volume ...
Haschke, T.1, Lautenschlager, D.1, Wiechert, W.1, Bonaccurso, E.2, Butt, H.J.2
1 University of Siegen, Faculty 11, Department of Simulation, Siegen, Germany
2 Max-Planck-Institute for Polymer Research, Polymer Physics Group, Mainz, Germany
The design of micro and nanoscale systems is a great challenge for modelling and simulation. In particular Lab-on-a-Chip-technology offers a wide spectrum of possible applications. Recently Bonaccurso and Butt (Bonaccurso & Butt 2005) presented a new approach to investigate droplet evaporation: They placed water droplets on rectangular, silicon atomic force microscope (AFM) cantilevers so that ...
Hoang, V.N., Kaigala, G.V., Backhouse, C.J.
ECERF, University of Alberta, Edmonton, Alberta, Canada
Localized heating is poised to become an integral part of microfluidic devices in various life-science applications. This is catalyzed by the scale of economics, the advantageous fluidic behavior at small volumes, and the ever increasing need for rapid and high throughput assays for pharmaceutical industry and other combinatorialbased studies. For precision confined heating, thin film resistive ...
Ivorra, B., Isèbe, D., Mohammadi, B.
Mathematics and Modelling Institute, Montpellier II University, Montpellier, France
Microfluidic channel systems used in bioanalytical applications are fabricated using technologies derived from microelectronics industry including lithography, wet etching and bonding of substrates. Industrial applications of these techniques concern DNA sequencing, new drug molecules trials, pollution detection in water or food, protein folding ... Focusing on this last domain, important ...