Дисертації з теми "Surface wave analysi"
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Lopez, Guiomar. "Evaluation, analysis, and application of HF radar wave and current measurements." Thesis, University of Plymouth, 2017. http://hdl.handle.net/10026.1/9291.
Повний текст джерелаZomorodian, Seyed Mohammad Ali. "Shear wave velocity of soils by the spectral analysis of surface waves (SASW) method." Thesis, University of Ottawa (Canada), 1996. http://hdl.handle.net/10393/10395.
Повний текст джерелаLiu, Siyu. "Shear Wave Velocity Analysis by Surface Wave Methods in the Boston Area:." Thesis, Boston College, 2017. http://hdl.handle.net/2345/bc-ir:107367.
Повний текст джерелаThesis advisor: Alan L. Kafka
As the best seismic indicator of shear modulus, shear-wave velocity is an important property in engineering problems in near-surface site characterization. Several surface-wave methods have been developed to obtain the subsurface shear-wave velocity structure. This thesis compared three surface-wave methods, Spectral Analysis of Surface Waves (SASW) (Nazarian et al., 1983), Multichannel Analysis of Surface Waves (MASW) (Park et al., 1999), and Refraction Microtremor (ReMi) (Louie, 2001), to determine which method gives the best estimation of the 1-D shear-wave velocity profile of near-surface soils. We collected seismic data at three sites in the greater Boston area where there are direct measurements of shear-wave velocities for comparison. The three methods were compared in terms of accuracy and precision. Overall, the MASW and the ReMi methods have comparable quality of accuracy, whereas the SASW method is the least accurate method with the highest percentage differences with direct measurements. The MASW method is the most precise method among the three methods with the smallest standard deviations. In general, the MASW method is concluded to be the best surface-wave method in determining the shear-wave velocities of the subsurface structure in the greater Boston area
Yoon, Sungsoo. "Array-Based Measurements of Surface Wave Dispersion and Attenuation Using Frequency-Wavenumber Analysis." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7246.
Повний текст джерелаFan, Yichao. "The analysis of surface defects using the ultrasonic Rayleigh surface wave." Thesis, University of Warwick, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.495017.
Повний текст джерелаMcAllister, Mark Laing. "Analysis of laboratory and field measurements of directionally spread nonlinear ocean waves." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28762.
Повний текст джерелаWijekoon, Wijekoon Mudiyanselage Kapila Piyasena. "Waveguide Surface Coherent anti-Stokes Raman Scattering Spectroscopy and optical second harmonic generation spectroscopy of molecules adsorbed on metal oxide surfaces." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184444.
Повний текст джерелаLowery, Kristen Mary. "Dynamic Analysis of an Inflatable Dam Subjected to a Flood." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/35802.
Повний текст джерела
An ABAQUS finite element model was used to determine the dynamic structural response of the dam. The problem was solved in the time domain which allows the prediction of a number of transient phenomena such as the generation of upstream advancing waves, and dynamic structural collapse. Stresses in the dam material were monitored to determine when rupture occurs. An iterative study was performed to find the service envelope of the dam in terms of the internal pressure and the flood Froude number for two flood depths. It was found that the driving parameter governing failure of the dam was the internal pressure. If this pressure is too low, the dam overflows; if this pressure is too high, the dam ruptures. The fully nonlinear free-surface flow over a semi-circular bottom obstruction was studied numerically in two dimensions using a similar solution formulation as that used in the previous study. A parametric study was performed for a range of values of the depth-based Froude number up to 2.5 and non-dimensional obstacle heights up to 0.9. When wave breaking does not occur, three distinct flow regimes were identified: subcritical, transcritical and supercritical. When breaking occurs it may be of any type: spilling, plunging or surging. In addition, for values of the Froude number close to 1, the upstream solitary waves break. A systematic study was undertaken, to define the boundaries of each type of breaking and non-breaking pattern, and to determine the drag and lift coefficients, free surface profile characteristics and transient behavior.
Master of Science
Cameron, Thomas P. (Thomas Philip) Carleton University Dissertation Engineering Electrical. "Circuit factor compensation for saw filters using modal analysis." Ottawa, 1988.
Знайти повний текст джерелаWilliams, Duncan Paul. "Scattering by wave-bearing surfaces under fluid loading." Thesis, University of Nottingham, 1999. http://eprints.nottingham.ac.uk/14370/.
Повний текст джерелаHarvey, Alan Paul. "Nonlinear surface acoustic waves and applications." Thesis, University of Southampton, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.255827.
Повний текст джерелаHughes, Adrian. "Transduction and guidance by narrow aperture surface acoustic wave structures." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236172.
Повний текст джерелаOrozco, M. Catalina (Maria Catalina). "Inversion Method for Spectral Analysis of Surface Waves (SASW)." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5124.
Повний текст джерелаKalinski, Michael E. "Determination of in situ V[subscript s] and G[subscript max] using surface wave measurements in cased and uncased boreholes /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаBlake, Christina Diane. "Narrow apperture surface acoustic wave transducers and their application in spectrum analysis." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.329903.
Повний текст джерелаOgilvy, J. A. "On the theory of ultrasonic wave scattering from rough surfaces." Thesis, University of Bath, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378884.
Повний текст джерелаThorvaldsson, Thor. "Design and analysis of surface acoustic wave resonators and resonator filters /." [S.l.] : [s.n.], 1988. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=8471.
Повний текст джерелаRosenblad, Brent Lyndon. "Experimental and theoretical studies in support of implementing the spectral-analysis-of-surface-wave (SASW) method offshore /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаVenkata, Pradeep Kumar Garudadri. "SURFACE WAVE SCATTERING FROM METALLIC NANO PARTICLES: THEORETICAL FRAMEWORK AND NUMERICAL ANALYSIS." Lexington, Ky. : [University of Kentucky Libraries], 2006. http://lib.uky.edu/ETD/ukymeen2006t00408/Thesis%5FPGV%5FFinal%5Fn.pdf.
Повний текст джерелаTitle from document title page (viewed on June 1, 2006). Document formatted into pages; contains ix, 94 p. : ill. (some col.). Includes abstract and vita. Includes bibliographical references (p. 91-93).
Bertel, Jeffrey D. "Analytical study of the spectral-analysis-of-surface-waves method at complex geotechnical sites." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4625.
Повний текст джерелаThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on August 21, 2007) Includes bibliographical references.
Godwin, Melinda Dee. "Continuous curved near wake analysis for a lifting surface." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/42517.
Повний текст джерелаFisher, Brian. "Surface Acoustic Wave (SAW) Cryogenic Liquid and Hydrogen Gas Sensors." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5208.
Повний текст джерелаPh.D.
Doctorate
Electrical Engineering and Computer Science
Engineering and Computer Science
Electrical Engineering
Lee, Seung-Woo. "Computational electromagnetic approaches for the analysis of rough surface scattering and artificial composite materials /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/5997.
Повний текст джерелаOnen, Onursal. "Analytical Modeling, Perturbation Analysis and Experimental Characterization of Guided Surface Acoustic Wave Sensors." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4555.
Повний текст джерелаShen, Yangfei. "Coupled Wave Analysis of Two-Dimensional Second Order Surface-Emitting Distributed Feedback Lasers." University of Dayton / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1461713975.
Повний текст джерелаTufekci, Sinan. "Combined Surface-Wave and Resistivity Imaging for Shallow Subsurface Characterization." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1250891786.
Повний текст джерелаRahman, Shubeur. "A finite element analysis of semiconductor quantum dot structures and surface acoustic wave devices." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613835.
Повний текст джерелаHobiger, Manuel. "Polarisation des ondes de surface : caractérisation, inversion et application à l'étude de l'aléa sismique." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00577887.
Повний текст джерелаMcEnaney, Kevin Bernard. "Magneto-absorption of surface acoustic waves by a 2-dimensional electron gas." Thesis, University of Nottingham, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293651.
Повний текст джерелаCasey, Thomas J. "Shear wave data collection in mid America using an automated surface source during seismic cone testing." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/32804.
Повний текст джерелаPethiyagoda, Ravindra. "Mathematical and computational analysis of Kelvin ship wave patterns." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/101167/1/Ravindra_Pethiyagoda_Thesis.pdf.
Повний текст джерелаMoueddene, Kada. "Analyse d'images en sismique : pretraitement et extraction d'informations par la morphologie mathematique." Toulouse 3, 1987. http://www.theses.fr/1987TOU30006.
Повний текст джерелаSritharan, Kumudesh. "Applications of surface acoustic waves (SAW) for chemical and biological analysis." kostenfrei, 2008. http://d-nb.info/994505051/34.
Повний текст джерелаZywicki, Daren Joseph. "Advanced signal processing methods applied to engineering analysis of seismic surface waves." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20232.
Повний текст джерелаDowaikh, Mohammad Abdulghani. "Surface and interfacial waves and deformations in pre-stressed elastic materials." Thesis, Connect to e-thesis, 1990. http://theses.gla.ac.uk/709/.
Повний текст джерелаNeal, Thomas C. "Analysis of Monterey Bay CODAR-derived surface currents, March to May 1992." Monterey, Calif. : Naval Postgraduate School, 1992. http://catalog.hathitrust.org/api/volumes/oclc/52761036.html.
Повний текст джерелаSodeify, Kamran. "Modelling for response analysis of earth dams subjected to travelling surface waves." Thesis, Imperial College London, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295725.
Повний текст джерелаMarchioreto, Adriano. "Implementação, testes e avaliação do método SASW (Spectral Analysis of Surface Waves)." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/44/44133/tde-07082015-110048/.
Повний текст джерелаThe Spectral Analysis of Surface Waves (SASW) is a non-destructive test based on the generation and detection of elastic surface waves (Rayleigh), and the study of the dispersion behavior of these waves. The application of this method to geotechnical problems aims at defining the elastic parameters of the different materials from the determination of the S wave propagation velocity. The objective of this thesis was to develop an instrumental system to record seismic waves and its utilization in the implementation, test and evaluation of the SASW method. The SASW method consists in the detection of Rayleigh surface waves and do not require boreholes or any other infrastructure since it is performed from thesurface. This allows it to be more economical than the crosshole or downhole tests that require the perforation and casing of boreholes to measure the P and S propagation velocities. The processing is carried out in frequency domain since the dispersive nature of the wave is in terms of frequency. The SASW methodology consists in three steps: a) data acquisition; b) determination of the dispersion curve of the Rayleigh wave and c) the inversion of the dispersion curve to obtain an S wave profile. It is presented a description of the adopted procedure for each step of the processing. Care was taken with the b) item since the major problems of the method appear during the calculation of the dispersion curve. Three case studies were presented. This allowed discussing and evaluating in detail the applicability, advantages and disadvantages of the method. The first case, classified as good, the dispersion curves, calculated from different geophone spacing, overlapped in a certain frequency window. In the second study, classified as intermediate quality, the dispersion curves presented some variations. The third example, classified as bad, the dispersion curves from different geophone spacing did not converge and it was necessary to try a new methodology to generate the dispersion curve of the area. The third step of the method consists in the inversion of the dispersion curve. Several initial models were generated and, after few dozens of iterations, presented the same trend. For the experiments in the USP campus very coincident dispersion curves were obtained and, consequently, a very consistent model was generated. In the UNICAMP campus case study the values agreed well, up to 4 meters of depth, with the crosshole results but diverge for higher depths. In the UNESP campus case study the results diverge completely. It was concluded that the instrument developed was appropriate to perform SASW tests. The automation of the tests is not possible due to the need of a high degree of interpret intervention. It is due mainly to the difficult to generate low frequencies.
Yang, Ming. "Development and analysis of a multiple beam laser system for measurement of surface vibrations." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/17685.
Повний текст джерелаLiu, Chuan-Chang. "Design, Analysis and Implementation of Fully-Integrated Millimeter-Wave Coupled-Oscillator Antenna Array." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1452240824.
Повний текст джерелаShinall, Brian Darnell. "Using surface plasmon resonance spectroscopy to characterize thin composite films." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/10157.
Повний текст джерелаRetaureau, Ghislain J. "Detection of Surface Corrosion by Ultrasonic Backscattering." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/11498.
Повний текст джерелаSilvestri, Lorenzo. "Numerical study of wind-wave interfacial phenomena." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14643/.
Повний текст джерелаHicks, Malcolm Andrew. "Geotechnical Investigations of Wind Turbine Foundations Using Multichannel Analysis of Surface Waves (MASW)." Thesis, University of Canterbury. Geological Sciences, 2011. http://hdl.handle.net/10092/6519.
Повний текст джерелаJamali, Mirmosadegh. "Aymptotic analysis of interaction of a surface wave with two internal waves." Thesis, 2000. http://hdl.handle.net/2429/10441.
Повний текст джерелаSchorer, Jan. "Theoretical evaluation, analysis and design of surface-mounted waveguide (SMW) components for on-substrate integrated microwave applications." Thesis, 2016. http://hdl.handle.net/1828/7098.
Повний текст джерелаGraduate
Naskar, Tarun. "Testing of Ground Subsurface using Spectral and Multichannel Analysis of Surface Waves." Thesis, 2017. http://etd.iisc.ernet.in/2005/3775.
Повний текст джерелаYen, Ta-Lung, and 嚴大龍. "Surface Wave Dispersion Analysis of Planar Corrugated Surfaces by Asymptotic Corrugations Boundary Conditions." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/13358769963814126866.
Повний текст джерела國立交通大學
電信工程研究所
100
Electromagnetic bandgap (EBG) structures had been widely investigated in literature in recent years, and the planar corrugated surface is one of them. In studying such structures, the dispersion and reflection phase diagrams are two of the most important characteristics. In this thesis, we will study how to retrieve the dispersion diagram of the corrugations accurately and rapidly. By an asymptotic method and the use of classical vector potentials, we can derive the characteristic equation, thereby obtaining the surface-wave dispersion diagram. To demonstrate its accuracy and quickness, the method we proposed will be compared to a full wave simulator and the transverse resonance technique (TRT), the latter being a traditional method for getting the dispersion diagram. Finally, we fabricated a corrugation, and measure its scattering parameters to indirectly verify the dispersion diagram obtained by the method we proposed. In traditional studies of corrugations, surface-wave propagations along only the two principal directions are considered, pertaining to the so-called soft and hard surfaces. In this thesis, we will further explore the situation whereby the wave propagates obliquely on the surface. By observing the dispersion diagram of the corrugations, we will notice its difference compared to normal periodic structures, and then explain the wave propagation properties on the corrugation surface. At the measurement stage, it is difficult to get the dispersion diagram directly, and usually the scattering parameters are used to explain the width and position in the frequency spectrum of the bandgaps. In the thesis, the relationship of the scattering parameters and wavenumbers are discussed, so that the measured scattering parameters can be transformed to the dispersion diagram effectively. So far we succeed in transforming the simulated scattering parameters to the dispersion diagram, and we hope this method can be applied to measured data in the future.
Lee, Morjin, and 李昇峻. "A Surface Wave Analysis Technique for Crack Sizing." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/46571959700782239259.
Повний текст джерела大葉大學
電機工程學系碩士班
92
In this study, a method of surface wave inspection is approached to detect an object’s surface condition. Surface wave inspection is performed by emitting ultrasonic waves along the surface of the object, and then according to the acquired property values of wave reflection, to determine whether if there is an existence of abnormal surface condition, for example, a fissure.During the employment of ultrasonic wave aiming to detect possible fissure, multiple reflective signals are returned and recorded. By analyzing these signals, formation of path composition by various waves is then formulated. Furthermore, these signals are proved to be a useful tool to double check for accuracy of the fissure height. By combining the results drawn from the above analyses, mean and standard deviation for multiple estimates are derived, as well as the confidence level. In conclusion, it follows from what has been said that, accurate fissure height derived from surface wave inspection is an applicable index for equipment safety and maintenance analyses.
Ming-Tien, Yang, and 楊明典. "Design and Analysis of Surface Acoustic Wave Oscillator." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/76897187795406565500.
Повний текст джерела義守大學
電機工程學系
89
A surface acoustic wave (SAW) oscillator consists of a high quality factor SAW resonator and an active circuit. A SAW resonator composes of Interdigital Transducers (IDT) and reflectors fabricated on a piezoelectric substrate. The properties of substrate, the modes of wave propagation, the geometry of IDT and reflecting grating determine the characteristics of a SAW resonator. In this thesis, the Mason’s equivalent circuit was applied to model the IDT. The Coupling of Modes (COM) was used for reflector. The cascade model and the theory of multiport connection were applied to simulate the frequency response. The ST-X quartz was chosen as the substrate for the reason of stable temperature coefficient in the room temperature. One-port SAW resonators were discussed in detail. First of all, self-developed program was used to simulate the frequency response and input impedance of the resonator. The simulating’s results were then put in the RF CAD design tool to design an oscillator. Finally, the performance of resonators and oscillators were compared with experimentation.