J. Ratnieks, A. Jakovics, and J. Klavins
University of Latvia
Although we know the physics inside a media where the sound waves propagate, determination of material\'s or structure\'s sound reduction index is not an easy task. The lack of good engineering solutions proves the point. The only reliable way to calculate the sound reduction index is to carry out an experiment.Therefore, the aim of this study is to develop a mathematical model that can ...
G. Ganzer, W. Beckert, T. Pfeifer, and A. Michaelis
The high thermal stability and fast start-up behavior make micro-tubular solid oxide fuel cells (SOFCs) a promising alternative for small-scale, mobile power devices in the range of some Watts. To understand the transport phenomena inside a single micro-tubular SOFC, a 2-D, axi-symmetric, non-isothermal model, performed in COMSOL Multiphysics® 4.2, has been developed. Due to long current path ...
Tim Poole graduated from Cambridge University with a Masters degree in Engineering in 2008 and immediately joined JDR Cables Systems, a leading supplier of custom subsea oil and gas umbilical systems and renewable energy cables. He started in the Research and Development team, working on creating new products lines and testing umbilicals, which included fatigue, tensile and bend stiffness ...
C. Grau Turuelo, B. Bergmann, C. Breitkopf, F. Hoffmann, L. Brencher
Technische Universität Dresden, Dresden, Saxony, Germany
Infineon Technologies GmbH, Dresden, Dresden, Saxony, Germany
A novel technique for semiconductor manufacturing is introduced: Silicon-On-Nothing. This process consists of an initial cylindrical trench which has a shape evolution under certain conditions: high temperature (1100 °C), low pressure (10 Torr) and a non-oxidizing atmosphere such as hydrogen. These conditions enable a, mainly, surface diffusion phenomenon whose final result is an empty space ...
Kinetic Investigation of a Mechanism for Generating Microstructures on Polycrystalline Substrates Using an Electroplating Process
T. Soares, H. Mozaffari, H. Reinecke
Universität Freiburg, Freiburg im Breisgau, BW, Germany
Hochschule Furtwangen, Tuttlingen, BW, Germany
The purpose of this study is to understand the growth mechanism of copper (Cu) films on a Cu-Zn system substrate with a pre-defined pattern. The pattern was defined by conducting a selective etching process on a two-phase polycrystalline substrate. As a result of this process, there were etched regions correspondent to beta-phase crystals and quasi non-etched regions that belong to alpha-phase ...
A.H. Ito, O.T. Kaminata , S.R. Lautenschlager
State University of Maringá, Maringá, Paraná, Brazil
The hydraulic flocculates are employed in water treatment plants (WTPs), but may present problems during the mixing stage reducing the efficiency of treatment. In this context modeling of a hydraulic flocculate using COMSOL and a 1:10 scale model of the Maringá-PR Brazil city WTP flocculate was done. The WTP flocculate is shown in figure 1 and the model illustrating the acrylic flocculate ...
J. Molinero, A. Nardi, P. Trinchero
Amphos 21, Barcelona, Spain
Groundwater is a key factor affecting mine operations worldwide. On one hand, both underground and open pit mines need to pump out groundwater in order to proceed with mineral extraction and increase the stability of rock slopes. On the other hand, groundwater abstractions can produce undesired environmental and social impacts, which should be anticipated in the environmental impact assessments ...
Reliability Enhancement of Bio MEMS based Cantilever Array Sensors for Antigen Detection System using Heterogeneous Modular Redundancy
L. S. Sundharam
Kumaraguru college of Technology, Coimbatore, Tamil nadu, India
The objective of the work is to propose a reliability enhancement model for antigen detection system (ADS) using bio MEMS based cantilever array sensors using heterogeneous modular redundancy technique. The reliability of the ADS is expressed in terms of the constituent sub systems which are heterogeneous not only in their respective structures and behaviors but also in their forms. The possible ...
Department of Mechanical Engineering, Kun Shan University of Technology, Tainan, Taiwan
Multiphysics simulation has been used extensively in our research for fluid flow and heat transfer applications. Our projects include: simulation of fluid dynamics in an active liquid heat sink for CPU cooling, impeller design for a pipe flow generator with computational fluid dynamics (CFD), investment casting with plastic rapid prototype patterns, phase change materials with rapid prototyping ...
Ramesh P, S.P Duttagupta
Indian Institute of Technology Bombay,Mumbai, Maharashtra, India
Air breathing proton exchange membrane fuel cells have now found its use in wide range of domestic and commercial energy based applications. Optimization of Proton Exchange Membrane Fuel Cell system parameters and its safer operation under dynamic conditions ensure higher system output and longer device lifetime. Ensuring safety against oxygen starvation reduces the degradation of membrane ...