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Identification Passive Des Milieux De Propagation Elastiques Application A La Reconstruction Geometrique Des Reseaux De Capteurs Et Au Diagnostic Des Structures
Download Identification Passive Des Milieux De Propagation Elastiques Application A La Reconstruction Geometrique Des Reseaux De Capteurs Et Au Diagnostic Des Structures full books in PDF, epub, and Kindle. Read online Identification Passive Des Milieux De Propagation Elastiques Application A La Reconstruction Geometrique Des Reseaux De Capteurs Et Au Diagnostic Des Structures ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Identification passive des milieux de propagation élastiques. Application à la reconstruction géométrique des réseaux de capteurs et au diagnostic des structures by : Mikael Carmona
Download or read book Identification passive des milieux de propagation élastiques. Application à la reconstruction géométrique des réseaux de capteurs et au diagnostic des structures written by Mikael Carmona and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'identification passive d'un système réside dans l'estimation des paramètres qui décrivent ce système uniquement à l'aide de sollicitations ambiantes. Dans le génie civil, cette discipline est appliquée pour le suivi de l'état de santé des structures, on parle de SHM (Structural Health Monitoring) passif. Le SHM passif est généralement réalisé à l'aide d'une instrumentation déployée en surface. La thèse s'est intéressée aux possibilités offertes par une instrumentation qui serait enfouie. Dans une première partie, on établit les résultats associés à l'identification passive des milieux visco-élastiques. L'originalité de ces travaux réside dans la prise en compte d'un modèle de dissipation réaliste, la viscosité, ainsi que du caractère vectoriel des ondes élastiques. Ces résultats théoriques sont validés expérimentalement et démontrent la portabilité du SHM passif en surface au SHM passif en volume. Dans une deuxième partie, on s'intéresse à deux problèmes attachés à l'enfouissement de capteurs: l'estimation passive de leur position (problème SNL, Sensor Network Location problem) et de leur attitude (problème SNA, Sensor Network Attitude problem). Ces problèmes sont résolus grâce à l'identification passive qui fournit, en plus d'information physique sur le milieu, des informations géométriques sur le réseau. En particulier, on peut estimer des distances et des attitudes relatives entre capteurs. A l'aide de ces informations partielles et bruitées, des algorithmes de résolution des problèmes SNL et SNA ont été développés puis validés expérimentalement. Enfin, on synthétise l'apport de la thèse et on identifie les verrous technologiques à lever afin de justifier la faisabilité de l'enfouissement d'un réseau de capteurs dans le but de faire du SHM passif.
Book Synopsis Submarine Mass Movements and Their Consequences by : Vasilios Lykousis
Download or read book Submarine Mass Movements and Their Consequences written by Vasilios Lykousis and published by Springer Science & Business Media. This book was released on 2007-09-14 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions from leading researchers in science and engineering, this book provides a global perspective on submarine mass movements and their consequences. Authors report on new findings from fundamental as well as site-specific studies from around the world. All studies relied on the most recent technologies, including multi-beam sonar imaging techniques, 3D seismic analysis, slope stability analysis, debris flow, and tsunami modeling.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1989 with total page 1056 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics and Control of Underactuated Multibody Spacecraft by : Sangbum Cho
Download or read book Dynamics and Control of Underactuated Multibody Spacecraft written by Sangbum Cho and published by . This book was released on 2002 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Filtering for Some Stochastic Processes with Discrete Observations by : Oleg V. Makhnin
Download or read book Filtering for Some Stochastic Processes with Discrete Observations written by Oleg V. Makhnin and published by . This book was released on 2002 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On Propagating Instabilities in Nickel-titanium & Steel Alloys by : Mark Anthony Iadicola
Download or read book On Propagating Instabilities in Nickel-titanium & Steel Alloys written by Mark Anthony Iadicola and published by . This book was released on 2002 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guidance Strategies for Microburst Escape by : Atilla Dogan
Download or read book Guidance Strategies for Microburst Escape written by Atilla Dogan and published by . This book was released on 2000 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Robert Alan Stowe Publisher :National Library of Canada = Bibliothèque nationale du Canada ISBN 13 :9780612654341 Total Pages :420 pages Book Rating :4.6/5 (543 download)
Book Synopsis Performance Prediction of a Ducted Rocket Combustor [microform] by : Robert Alan Stowe
Download or read book Performance Prediction of a Ducted Rocket Combustor [microform] written by Robert Alan Stowe and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2001 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fixed-structure Adaptive-improvement Control by : Daniel P. Scharf
Download or read book Fixed-structure Adaptive-improvement Control written by Daniel P. Scharf and published by . This book was released on 2001 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Numerical Investigation of Sound Generation in Supersonic Jet Screech by : Ted A. Manning
Download or read book A Numerical Investigation of Sound Generation in Supersonic Jet Screech written by Ted A. Manning and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The noise of supersonic jet flows is due in part to the interaction between jet instability waves and the jet shock-cell structure. If no countermeasures are taken, the emitted shock-cell noise will re-excite certain instability wave modes at the nozzle lip and cause resonant feedback to occur. This feedback resonance, known as supersonic jet screech, causes the jet to flap violently at discrete frequencies and generate very strong, narrow banded tones. Jet screech has been shown to be a source of acoustic fatigue in the tail and nozzle structures of supersonic aircraft. It is important that methods for predicting the screech amplitude be developed. Screech sound generation is one such element. We isolate the interaction of an unsteady shear layer with a single oblique shock. To obtain an overall understanding of the phenomenon with fewest simplifications, we study this problem through the numerical solution of the Navier Stokes equations. We then consider idealizations which allow us to obtain a similar but wider range of results with specially linearized Euler equations. The findings of these r0sults motivate the use of geometric acoustics to describe the screech generation process. The Navier-Stokes and Euler simulations have revealed important details about the interaction process, how the acoustic field results, and why screech is so loud. The mechanism for sound production is found to be fundamentally different and more efficient when the instability waves are the large vortices typical of screech, than when they are small disturbances. Geometrical acoustics can be used to explain the leakage effect at high instability wave amplitude. We conclude that the mechanism for high amplitude screech generation is an unsteady modification to the velocity field by the instability waves that permits the incident shock to refract through the shear layer.
Book Synopsis Adaptive Harmonic Balance Method for Unsteady, Nonlinear, One- Dimensional Periodic Flows by : Raymond C. Maple
Download or read book Adaptive Harmonic Balance Method for Unsteady, Nonlinear, One- Dimensional Periodic Flows written by Raymond C. Maple and published by . This book was released on 2002-09-01 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new adaptive split-domain harmonic balance computational fluid dynamics (CFD) method is developed to solve highly nonlinear time-periodic flows such as those found in turbomachinery. The basic harmonic balance CFD method transforms an unsteady time-periodic problem into a steady-state problem by assuming a solution in the form of a Fourier series in time. The new method employs a unique multi-domain split-operator solution technique to remove a large-series stability restriction present in previous harmonic balance CFD approaches. In addition, the new method adapts the frequency content to the flow, starting with a small number of Fourier frequencies and augmenting the frequency content in each cell as necessary to capture local flow physics. The method reduces compute times by allowing larger integration time steps, eliminating Fourier transforms, and reducing overall problem size. The stability and accuracy of the method are verified with solutions to the 1-D inviscid Burger's equation and 1-D Euler's equation. Accurate adapted quasi-1-D Euler solutions for a supersonic/subsonic diverging nozzle with periodic unsteady outflow conditions are generated in 86% less time than an equivalent non-adapted split-domain solution, demonstrating the performance benefit of matching frequency content to the local flow conditions.
Book Synopsis The Velocity and Vorticity Fields of a Single Stream Shear Layer by : Scott Christopher Morris
Download or read book The Velocity and Vorticity Fields of a Single Stream Shear Layer written by Scott Christopher Morris and published by . This book was released on 2002 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Properties of Spray Formation by Turbulent Primary Breakup by : Khaled A. Sallam
Download or read book Properties of Spray Formation by Turbulent Primary Breakup written by Khaled A. Sallam and published by . This book was released on 2002 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Investigation of the Physical Vapor Deposition of Titanium by : Jitendra Balakrishnan
Download or read book Numerical Investigation of the Physical Vapor Deposition of Titanium written by Jitendra Balakrishnan and published by . This book was released on 2001 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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