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Classical Physics papers — page 157

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Experimental Studies of Antenna Miniaturization Using Magneto-Dielectric and Dielectric Materials
Measurement results for a meandered planar inverted-F antenna (PIFA) loaded with magneto-dielectric and dielectric materials are presented. Figures of merit and ways to compare antennas with…
Antti O. Karilainen, Pekka M. T. Ikonen, Constantin R. Simovski et al.Oct 21, 2009
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Finite element computation of absorbing boundary conditions for time-harmonic wave problems
This paper proposes a new method, in the frequency domain, to define absorbing boundary conditions for general two-dimensional problems. The main feature of the method is that it can obtain boundary…
Denis Duhamel, Tien-Minh NguyenOct 20, 2009
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An Analytical Study on the Instability Phenomena During the Phase Transitions in a Thin Strip under Uniaxial Tension
In the experiments on stress-induced phase transitions in SMA strips, several interesting instability phenomena have been observed, including a necking-type instability, a shear-type instability and…
Hui-Hui Dai, Zongxi CaiOct 14, 2009
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A note on relativistic rocketry
In the context of special relativity, we discuss the specific impulse of a rocket whose exhaust jet consists of massive and/or massless particles. This work generalizes previous results and corrects…
Shawn WestmorelandOct 11, 2009
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Elastic modulus of a colloidal suspension of rigid spheres at rest
By modeling a colloidal suspension at rest as a solid, a new expression for the linear elastic modulus is obtained. This estimate is valid for a yield stress colloidal suspension submitted to a small…
Laurentiu Pasol, Xavier ChateauOct 9, 2009
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Explanation notes on the multipole expansions of the electromagnetic field
Starting from Jefimenko's equations, we consider the multipole expansions of electric and magnetic fields for a confined system of charges and currents. We analyze and comment on the calculus of…
C. Vrejoiu, R. ZusOct 7, 2009
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Crosscorrelation kernel in the Green function retrieval and time reversal acoustics
Crosscorrelation structures in the Green function retrieval by crosscorrelating wavefields are revealed using rigorous mathematical theory on integral equations. The previous practice on extracting…
Yingcai ZhengOct 6, 2009
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Lorentz Transform of Black Body Radiation Temperature
The Lorentz transform of black body radiation has been investigated from the view point of relativistic statistical mechanics. The result shows that the well known expression with the directional…
Tadas K NakamuraOct 1, 2009
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A simple electrostatic model applicable to biomolecular recognition
An exact, analytic solution for a simple electrostatic model applicable to biomolecular recognition is presented. In the model, a layer of high dielectric constant material (representative of the…
T. P. Doerr, Yi-Kuo YuSep 30, 2009
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The Regenerative Vibrations Influence on the Mechanical Actions in Turning
In manufacturing during the cutting process the appearance of vibrations can not be avoided. These vibrations constitute a major obstacle to obtain a greater productivity and a better quality of the…
Claudiu-Florinel Bisu, Raynald Laheurte, Alain Gérard et al.Sep 28, 2009
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Metrology Influence on the Cutting Modelisation
High speed machining has been improved thanks to considerable advancement on the tools (optimum geometry, harder materials), on machined materials (increased workability and machining capacity for…
Olivier Cahuc, Alain GérardSep 28, 2009
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Analyzes Geometry of Part and Chips at the Time of Regeneratives Vibrations
The actions of cut applied to the elastic system cause relative displacements tool/part, which induce a rise in the temperature in the components of the machine tools, its environment, the…
Claudiu-Florinel Bisu, Jean-Yves K'Nevez, Alain Gérard et al.Sep 28, 2009
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Optimization and Dynamic Characterization System Part in Turning
The appearance of the self-sustained vibrations corresponds to the dynamic instability of the machine tool. An experimental device and a model were designed to characterize the cutting system, the…
Claudiu-Florinel Bisu, Constantin Ispas, Alain Gérard et al.Sep 28, 2009
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Regeneratives Vibrations Analyzes On The Part And Chip
The actions of cut applied to the elastic system generate relative tool/part displacements, which induce a temperature increasing in the components of the machine tools, its environment, the…
Constantin Ispas, Claudiu-Florinel Bisu, Alain Gérard et al.Sep 28, 2009
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Three-Dimensional Dynamic Cutting Model
The determination of a dynamic law of cut is complex and often very difficult to develop. Several formulations were developed, in very complex ways being given that 3 AD crosses from there, the…
Constantin Ispas, Claudiu-Florinel Bisu, Alain Gérard et al.Sep 28, 2009
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Using Tracking Analysis and Predictive Maintenance in Order to Obtain Dynamics of Machine Tool Spindle
Predictive maintenance is directed towards recognizing the earliest significant changes in machinery condition. Contrasted with protective condition monitoring in which fast response is the primary…
Miron Zapciu, Jean-Yves K'Nevez, Alain GérardSep 28, 2009
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A force torsor analysis for a turning process in the presence of self-excited vibrations
A testing device in turning including, in particular, a six-component dynamometer, is used to measure the complete torque of the cutting actions, in a case of self-excited vibrations. For the tests,…
Constantin Ispas, Olivier Cahuc, Claudiu-Florinel Bisu et al.Sep 28, 2009
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Application of exterior calculus to waveguides
Exterior calculus is a powerful tool to search for solutions to the electromagnetic field equations, whose strength can be better appreciated when applied to work out non-trivial configurations. Here…
Rafael FerraroSep 24, 2009
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Instabilities Induced by Phase Fronts Coalescence During the Phase Transitions in a Thin Sma Layer: Mechanism and Analytical Descriptions
Systematic experiments on stress-induced phase transitions in thin SMA structures in literature have revealed two interesting instability phenomena: the coalescence of two martensite-austenite fronts…
Hui-Hui Dai, Jiong WangSep 24, 2009
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Experimental study on the cyclic resistance of a natural loess from Northern France
In order to analyze the instability phenomenon observed along the Northern High Speed Line of Réseau Ferré de France (RFF), soil blocks were taken at a site near the railway, at four different depths…
Jean-Paul Karam, Yu-Jun Cui, Anh-Minh Tang et al.Sep 22, 2009
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Cylindrical Magnets and Ideal Solenoids
Both wire-wound solenoids and cylindrical magnets can be approximately modeled as ideal, azimuthally symmetric solenoids. We present here an exact solution for the magnetic field of an ideal solenoid…
Norman Derby, Stanislaw OlbertSep 22, 2009
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Acoustic Wave Approach for Multi-Touch Tactile Sensing
In this communication, we present a high resolution tactile plate that can localize one or two contact fingers. The localization principle is based on Lamb wave absorption. Fingers' contact will…
Yuan Liu, Jean-Pierre Nikolovski, Moustapha Hafez et al.Sep 18, 2009
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Model of Extended Mechanics and Non-Local Hidden Variables for Quantum Theory
Newtonian physics is describes macro-objects sufficiently well, however it does not describe microobjects. A model of Extended Mechanics for Quantum Theory is based on an axiomatic generalization of…
Timur F. KamalovSep 14, 2009
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Developing a method for elaboration the scenarios related with sustainable products lifecycle
This article aims at presenting our objective that is to use DfD rules earlier during the design process. Indeed, during the conceptual design phase, designers don't have simple qualitative tools…
Hayder Alhomsi, Peggy ZwolinskiSep 11, 2009
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Blackbody Radiation and the Scaling Symmetry of Relativistic Classical Electron Theory with Classical Electromagnetic Zero-Point Radiation
It is pointed out that relativistic classical electron theory with classical electromagnetic zero-point radiation has a scaling symmetry which is suitable for understanding the equilibrium behavior…
Timothy H. BoyerSep 4, 2009
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