Relevant bibliographies by topics / The diffraction of waves on the reflectors

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
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Academic literature on the topic 'The diffraction of waves on the reflectors'

Author: Grafiati
Published: 28 May 2022
Last updated: 31 July 2025

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Journal articles on the topic "The diffraction of waves on the reflectors"

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Zhang, Dongliang, Tong W. Fei, Constantine Tsingas, and Yi Luo. "Efficient wave-equation-based diffraction imaging." GEOPHYSICS 84, no. 5 (2019): S389—S399. http://dx.doi.org/10.1190/geo2018-0568.1.

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We have developed an efficient and practical wave-equation-based technique to image subsurface geologic features such as isolated scatterers, reflector edges, fault, fracture zones, and erosion whose information is mainly contained in diffracted waves. This technique has the ability to directly reveal and differentiate important geologic features compared with results obtained using reflected seismic waves. This new technique comprises three steps. First, the source and receiver wavefields are decomposed into left- and right-downgoing propagating waves, respectively. Second, applying the imagi
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Mogilner, L. Yu, Ya G. Smorodinsky, and V. V. Tishkin. "Usage of Volumetric Reflectors for Adjusting Ultrasonic Testing Parameters." Defektoskopiâ, no. 10 (October 19, 2024): 3–15. http://dx.doi.org/10.31857/s0130308224100014.

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In ultrasonic flaw detection, lateral cylindrical drillings are traditionally used to adjust and check the parameters of equipment. Other volumetric reflectors, such as vertical drillings or spherical pores, are rarely used. This article notes that such models of internal and surface defects of welded seams are convenient to use and easy to manufacture. For a long time, a limitation to the use of drillings for modeling in ultrasonic flaw detection was the use of these effects not only on defect models in the form of noise associated with the diffraction effects of elastic waves running around
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Sumbatyan, Mezhlum A., Nikolay V. Boyev, and Vladislav S. Kharitonov. "Focusing Effects in Reflection of Waves From the Inner Boundary of an Ellipse." UNIVERSITY NEWS. NORTH-CAUCASIAN REGION. NATURAL SCIENCES SERIES, no. 1 (March 31, 2025): 40–50. https://doi.org/10.18522/1026-2237-2025-1-40-50.

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Mathematical study of the phenomenon of wave focusing during reflection from 2D-curvilinear reflectors is carried out within the framework of the geometric theory of diffraction based on the Kirchhoff physical theory of diffraction. An explicit form of the leading term of the pressure expansion in the reflected acoustic wave is obtained. In the work, using the example of a concave elliptical reflector, it is established that in the case of a certain mutual arrangement of the source and the receiver, singular focusing effects appear, which lead to the fact that the amplitude of the reflected wa
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Liu, Xuan, Lisa Samfaß, Kevin Kolpatzeck, et al. "Terahertz Beam Steering Concept Based on a MEMS-Reconfigurable Reflection Grating." Sensors 20, no. 10 (2020): 2874. http://dx.doi.org/10.3390/s20102874.

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With an increasing number of applications of terahertz systems in industrial fields and communications, terahertz beamforming and beam steering techniques are required for high-speed, large-area scanning. As a promising means for beam steering, micro-electro-mechanical system (MEMS)-based reflection gratings have been successfully implemented for terahertz beam control. So far, the diffraction grating efficiency is relatively low due to the limited vertical displacement range of the reflectors. In this paper, we propose a design for a reconfigurable MEMS-based reflection grating consisting of
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Zhao, Jingtao, Caixia Yu, Suping Peng, and Jingjie Cao. "Least-squares imaging of diffractions by solving a hybrid L1-L2 norm minimization problem." GEOPHYSICS 86, no. 1 (2021): S59—S72. http://dx.doi.org/10.1190/geo2019-0720.1.

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Traditional diffraction images without a specific migration kernel for promoting focusing abilities may cause confusion to seismic interpretation because diffraction images may show a finite-array response of diffracted/scattered waves. Because diffractors are discontinuous and sparsely distributed, a least-squares diffraction-imaging method is formulated by solving a hybrid L1-L2 norm minimization problem that imposes a sparsity constraint on diffraction images. It uses two different forward modeling operators for reflections and diffractions and L2 and L1 regularizations for penalizing the a
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Zhao, Jingtao, Suping Peng, Wenfeng Du, and Xiaoting Li. "Diffraction imaging method by Mahalanobis-based amplitude damping." GEOPHYSICS 81, no. 6 (2016): S399—S408. http://dx.doi.org/10.1190/geo2015-0692.1.

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Clarifying and locating small-scale discontinuities or inhomogeneities in the subsurface, such as faults and collapsed columns, plays a vital role in safe coal mining because these discontinuities or inhomogeneities may destroy the continuity of layers and result in dangerous mining accidents. Diffractions carry key information from these objects and therefore can be used for high-resolution imaging. However, diffracted/scattered waves are much weaker than reflected waves and consequently require separation before being imaged. We have developed a Mahalanobis-based diffraction imaging method b
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Bansal, Reeshidev, and Matthias G. Imhof. "Diffraction enhancement in prestack seismic data." GEOPHYSICS 70, no. 3 (2005): V73—V79. http://dx.doi.org/10.1190/1.1926577.

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Seismic diffractions are often considered noise and are intentionally or implicitly suppressed during processing. Diffraction-like events include true diffractions, wave conversions, or fracture waves which may contain valuable information about the subsurface and could be used for interpretation or imaging. Using synthetic and field data, we examine workflows to separate diffractions from reflections that allow enhancement of diffraction-like signals and suppression of reflections. The workflows consist of combinations of standard processing modules. Most workflows apply normal moveout correc
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Li, Chuangjian, Suping Peng, Xiaoqin Cui, Qiannan Liu, and Peng Lin. "Prestack diffraction separation by parameterizing the reflection local slope." GEOPHYSICS 87, no. 2 (2021): S35—S44. http://dx.doi.org/10.1190/geo2021-0321.1.

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Diffracted waves provide an opportunity to detect small-scale subsurface structures because they give wide illumination direction of geologic discontinuities, such as faults, pinch outs, and collapsed columns. However, separating diffracted waves is challenging because diffracted waves have greater geometric amplitude losses and are generally weaker than reflections. To retain more diffracted waves, we have developed a prestack diffraction separation method based on the local slope pattern and plane-wave destruction (PWD) method. In general, it is difficult to distinguish between hyperbolic re
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Sheng, Tongjie, and Jingtao Zhao. "Separation and imaging of diffractions using a dilated convolutional neural network." GEOPHYSICS 87, no. 3 (2022): S117—S127. http://dx.doi.org/10.1190/geo2021-0260.1.

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Seismic diffractions provide high-resolution details of small-scale geologic discontinuities, and diffraction imaging can be an important contribution to the exploration of faults, fractures, and cavities. However, reflections with strong energy generally mask the existence of weak diffractions in seismic records, and separating diffractions is necessary to see the full benefit of diffraction imaging. Here, a modified convolutional neural network (CNN) is used for separating diffractions. The input wavefields are modeled as the summation of individual diffractions and reflections, the network
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Kuzikov, Sergey, Nikolay Peskov, and Mikhail Plotkin. "Open Bragg Cavity with Gaussian Wavebeam for Free Electron Maser of Centimeter Wavelength Range." Siberian Journal of Physics 8, no. 1 (2013): 24–31. http://dx.doi.org/10.54362/1818-7919-2013-8-1-24-31.

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This paper describes a highly selective electromagnetic cavity for a 30 GHz free electron maser (FEM). The cavity consists of two Bragg reflectors with overlapping reflection bands. Reflectors have been synthesized with the help of coupled waves method. For the sake of mode selectivity reflectors are separated by a gap which is wide in the wavelength scale. The operating mode in the interspace between the reflectors represents a Gaussian wavebeam of small diameter, so that its field is detached from the cavity walls, and the loss of radiation through the gap is negligible. At the same time, sp
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Dissertations / Theses on the topic "The diffraction of waves on the reflectors"

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Suedan, Gibreel A. "High frequency beam diffraction by apertures and reflectors." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27545.

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Most solutions for electromagnetic wave diffraction by obstacles and apertures assume plane wave incidence or omnidirectional local sources. Solutions to diffraction problems for local directive sources are needed. The complex source point representation of directive beams together with uniform solutions to high frequency diffraction problems is a powerful combination for this. Here the method is applied to beam diffraction by planar structures with edges, such as the half-plane, slit, strip, wedge and circular aperture. Previously used restrictions to very narrow beams and paraxial regions,
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Fozard, John Andrew. "Diffraction and scattering of high frequency waves." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433239.

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This thesis examines certain aspects of diffraction and scattering of high frequency waves, utilising and extending upon the Geometrical Theory of Diffraction (GTD). The first problem considered is that of scattering of electromagnetic plane waves by a perfectly conducting thin body, of aspect ratio O(k^1/2), where k is the dimensionless wavenumber. The edges of such a body have a radius of curvature which is comparable to the wavelength of the incident field, which lies inbetween the sharp and blunt cases traditionally treated by the GTD. The local problem of scattering by such an edge is tha
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Rogoff, Zigmund M. "Diffraction of acoustic waves at fluid-solid boundaries." Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319952.

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Chen, Meng-Yi. "Nonlinear diffraction and refraction of regular and random waves." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/34378.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2006.<br>Includes bibliographical references (p. 302-306).<br>The mild-slope equation is an effective approximation for treating the combined effects of refraction and diffraction of infinitesimal water waves, for it reduces the spatial dimension of the linear boundary value problem from three to two. We extend this approximation to nonlinear waves up to the second order in wave steepness, in order to simplify the inherently three-dimensional task. Assuming that the geometrical complexity is r
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Cheung, Kwok Fa. "Time-domain solution for second-order wave diffraction." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30987.

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A numerical method based on potential flow theory is developed for simulating transient, second-order interactions of ocean waves with large fixed bodies of arbitrary shape in two and three dimensions. The physical problem is represented by a mathematical model composed of a fluid domain bounded by the body surface, the still water surface, the seabed, and a control surface truncating the infinite fluid region. The nonlinear free surface boundary conditions defined on the instantaneous free surface are expanded about the still water level by a Stokes expansion procedure. The flow potential to
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Сайко, Ігор Миколайович, Игорь Николаевич Сайко та Ihor Mykolaiovych Sajko. "Математическое моделирование поведения систем отражателей при гармонических воздействиях на основе сингулярных интегральных уравнений". Thesis, Институт кибернетики имени В.М. Глушкова НАН Украины, 2016. http://essuir.sumdu.edu.ua/handle/123456789/44686.

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Мета дисертації – підвищення ефективності та точності визначення характеристик фізичних на локальних системах відбивачів, що знаходяться під впливом стаціонарних гармонічних антиплоских або плоских навантажень, якщо ці процеси моделюються СІР. Досягається завдяки двом типам досліджень: безпосередньому чисельному розв’язанню нових дифракційних задач, коли гармонічні впливи здійснюються на локальні системи відбивачів довільного поперечного перетину та довільної кількості (для яких в інтерпретації теорії пружності отримуються нові залежності), а також дослідженню обумовленості та стійкості викори
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Zhang, Qin. "Acoustic pulse diffraction by curved and planar structures with edges." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/32005.

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Efficient and accurate solutions of acoustic wave diffraction by a rigid step discontinuity and a curved half-plane are derived by the uniform geometrical theory of diffraction. These solutions can be used in seismic data processing to evaluate and, eventually, to improve the existing data processing procedures. They can also find applications in electromagnetics, microwave antenna design, acoustic design and sound engineering. The rigid step discontinuity solution given in this thesis is more accurate than the existing solutions which are based on Kirchhoff theory of diffraction. This solut
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Ohl, Clifford Owen Groome. "Free surface disturbances and nonlinear runup around offshore structures." Thesis, University of Oxford, 2000. http://ora.ox.ac.uk/objects/uuid:320ff8da-c225-40da-a7dd-d6cf55c97b51.

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Diffraction of regular waves, focused wave groups, and random seas by arrays of vertical bottom mounted circular cylinders is investigated using theoretical, computational, and experimental methods. Free surface elevation η is the defining variable used to test the potential theory developed. In addition, the nonlinearity of focused wave groups is investigated through the Creamer nonlinear transform and analysis of numerical wave tank data. Linear focused wave group theory is reviewed as a method for predicting the probable shape of extreme events from random wave spectra. The Creamer nonlinea
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Huang, Chi-Luen. "Effect of beam diffraction on nonlinear Rayleigh surface wave measurement." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47537.

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This research investigates the effects of beam diffraction from a source of finite width on nonlinear Rayleigh wave propagation in an elastic half space. Previous work has shown that nonlinear ultrasonic Rayleigh waves can be used to evaluate material damage due to plastic deformation and fatigue. In this measurement, a relatively small wedge transducer is employed to launch Rayleigh surface waves in the specimen and the first and second harmonic amplitudes are measured in the far field as a function of propagation distance. In order to obtain a reliable set of measurement data, one needs to m
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MENDES, LEONARDO DE SOUZA. "DIFFRACTION OF A ELECTROMAGNETIC WAVES BY A PARABOLIC SEMI-CYLINDER." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1987. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=9491@1.

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É analisado o problema de difração de uma onda eletromagnética cilíndrica pela borda de um semi-cilindro parabólico. O problema é formulado em termos das funções de Weber do cilindro parabólico que são soluções da equação de onda em coordenadas cilindro-parabólicas. A solução é obtida com o auxílio da técnica de Wiener-Hopf que fornece, para os campos espalhados, um resultado em termos de uma equação integral. Obtém-se, então, as aproximações assintóticas destes resultados. Estas aproximações fornecem para regiões afastadas da fronteira de sombra uma solução em termos de ponto de sel
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Books on the topic "The diffraction of waves on the reflectors"

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Moon, Young J. Numerical simulation by TVD schemes of complex shock reflections from airfoils at high angle of attack. American Institute of Aeronautics and Astronautics, 1987.

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Agnon, Yehuda. Nonlinear diffraction of ocean gravity waves. Woods Hole Oceanographic Institution, 1986.

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Melrose, Richard B. Semi-linear diffraction of conormal waves. Société mathématique de France, 1996.

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Melrose, Richard B. Semi-linear diffraction of conormal waves. Société Mathématique de France, 1996.

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Melrose, Richard B. Semi-linear diffraction of conormal waves. Société Mathématique de France, 1996.

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L, James Graeme. Geometrical theory of diffraction for electromagnetic waves. 3rd ed. P. Peregrinus on behalf of the Institution of Electrical Engineers, 1986.

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Balanis, Constantine A. Interior impedance wedge diffraction with surface waves. National Aeronautics and Space Administration, Langley Research Center, 1988.

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Petersburg, Russia) International Seminar Day on Diffraction (2004 St. Days on Diffraction' 2004: Proceedings of the International Seminar Days on Diffraction' 2004, June 29-July 2, 2004, St. Petersburg, Russia. Faculty of Physics, SPbU, 2004.

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Glimm, James. Computational techniques for shock wave diffraction problems. U.S. Army Research Office, 1986.

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Podilʹchuk, I͡Uriĭ Nikolaevich. Luchevye metody v teorii rasprostranenii͡a i rassei͡anii͡a voln. Nauk. dumka, 1988.

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Book chapters on the topic "The diffraction of waves on the reflectors"

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Boyev, Nikolay V. "Short-Wave Diffraction of Elastic Waves by Voids in an Elastic Medium with Double Reflections and Transformations." In Advanced Structured Materials. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3797-9_5.

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Beynon, J. "Diffraction." In Work Out Waves and Optics. Macmillan Education UK, 1988. http://dx.doi.org/10.1007/978-1-349-10165-8_4.

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Vistnes, Arnt Inge. "Interference—Diffraction." In Physics of Oscillations and Waves. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72314-3_13.

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Rahmat-Samii, Y. "Recent Advances in Diffraction Analysis of Reflector Antennas." In Directions in Electromagnetic Wave Modeling. Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-3677-6_6.

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Boyev, Nikolay V. "Diffraction of the High-Frequency Waves by Arrays of Obstacles in the Two-Dimensional Elastic Medium, with Multiple Reflections and Transformations." In Advanced Structured Materials. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-17470-5_5.

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Sivier, S., J. Baum, E. Loth, and R. Löhner. "Vorticity produced by shock wave diffraction." In Shock Waves. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-77648-9_15.

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Needham, C. E., D. F. Dawson, and J. E. Crepeau. "Shock diffraction over a flat plate." In Shock Waves. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-77648-9_33.

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Bazarov, S. B., T. V. Bazhenova, O. V. Bulat, V. V. Golub, and A. M. Shulmeister. "Three-dimensional diffraction of shock wave." In Shock Waves. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-77648-9_34.

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Law, C., B. W. Skews, and K. H. Ching. "Shock wave diffraction over complex convex walls." In Shock Waves. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-85181-3_109.

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Bakkum, E. A., J. Weerheijm, and H. J. Pasman. "Diffraction of weak shock waves by barriers." In Shock Waves. Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-77648-9_35.

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Conference papers on the topic "The diffraction of waves on the reflectors"

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Glushkov, Evgeny V., Natalia V. Glushkova, and Alexander A. Tatarkin. "Guided Waves and Resonance Effects in Piezoelectric Laminate Structures." In 2024 Days on Diffraction (DD). IEEE, 2024. https://doi.org/10.1109/dd62861.2024.10768012.

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Carniglia, Charles K. "Diffraction theory of interference coatings." In OSA Annual Meeting. Optica Publishing Group, 1988. http://dx.doi.org/10.1364/oam.1988.ws2.

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The question sometimes arises as to whether an interference filter affects the shape or the direction of propagation of a reflected or transmitted beam. The answer can be found by expressing the incident beam (which is assumed to be spatially and temporally coherent) in terms of its spectrum of angular plane wave components. The amplitude reflectance and transmittance of the filter act on each plane wave, and the shape and direction of the reflected and transmitted beams can be determined from the composite of all the waves. A 2-D theory is employed, and several elementary results are obtained
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Rudnitsky, A. S. "Imaginary and real wave beams in angle reflectors diffraction field." In Telecommunication Technology" (CriMiCo 2008). IEEE, 2008. http://dx.doi.org/10.1109/crmico.2008.4676489.

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Welch, Gisele, and Ronald L. Phillips. "Enhanced backscatter effects of various reflectors." In OSA Annual Meeting. Optica Publishing Group, 1989. http://dx.doi.org/10.1364/oam.1989.wo6.

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There has been theoretical and experimental work in the area of enhanced backscatter.1,2 A simulation was developed that consists of a wave passing through a random inhomogeneous medium that has a power law spectrum. The wave is then reflected back through the same medium at which point the angular intensity statistics are studied. This simulation was tested and compared with theoretical work conducted by Jakeman.3 The cases that were studied included the diffraction effects of changing the contour of the mirror and the spectral index of the scattering medium of the phase screen. Enhanced back
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Lebedev, M. K., V. B. Khaikin, A. Boag, and C. Letrou. "Optical and diffraction simulation techniques for large multibeam reflector." In 2010 International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves (MSMW). IEEE, 2010. http://dx.doi.org/10.1109/msmw.2010.5546098.

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M. Aizenberg, A., and K. D. Klem-Musatov. "Progress in Seismic Diffraction Theory – From Edge and Tip Waves to Multiple Reflections-transmissions with Diffractions." In 72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010. European Association of Geoscientists & Engineers, 2010. http://dx.doi.org/10.3997/2214-4609.201400832.

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Wang, J., S. M. Calisal, and W. Qiu. "Interactions Between Vertical Structures in Waves." In ASME 2005 24th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2005. http://dx.doi.org/10.1115/omae2005-67539.

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This paper presents experimental and theoretical results obtained during the hydrodynamic study of a multi-cylinder system. The main focus of the study was to quantify hydrodynamic interactions between heaving vertical cylinders of a conceptual wave energy conversion system. Several identical circular cylinders representing platforms in an energy conversion system and a parabolic shaped wave reflector were tested in a wave flume tank. Wave heaving forces, radiation and diffraction effects were studied experimentally and numerically. The theoretical calculations were carried out for hydrodynami
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Peyton, Christian, Rachel S. Edwards, Steve Dixon, Ben Dutton, and Wilson Vesga. "Detection of Defects in Titanium Using Shear Horizontal Guided Waves." In 2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/qnde2021-74942.

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Abstract This paper investigates the interaction behaviour between the fundamental shear horizontal guided wave mode and small defects, in order to understand and develop an improved inspection system for titanium samples. In this work, an extensive range of defect sizes have been simulated using finite element software. The SH0 reflection from a defect has been shown previously to depend on its length as the total reflection consists of reflections from both the front and back face. However, for small defect widths, this work has found that the width also affects this interference, changing t
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Li, Lifeng, James Burke, George Stegeman, and Colin T. Seaton. "Design technique for guided-wave gratings." In OSA Annual Meeting. Optica Publishing Group, 1987. http://dx.doi.org/10.1364/oam.1987.mk1.

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We present a design technique for accurately predicting coupling efficiency in guided-wave applications of gratings. We approach the problem by separating the planar waveguide and diffraction grating. The wave guiding is treated by ray optics techniques, and grating diffraction is treated by rigorous diffraction grating theory or direct measurement. In this way, we get more feeling for the working of the grating as a diffraction element and how it interacts with the waveguide structure. When the grating groove depth is small our results agree with the phenomenological expressions given by Zory
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McMillan, John. "Coke Drum Weld Inspection." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26109.

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Conventional Ultrasonic Inspection of Coke Drums may require the use of Automated Pulse Echo or Time of Flight Diffraction Techniques (TOFD). The more recent application of Phased Array ultrasonic technology enables a faster and more accurate location and depth discrimination of the cracks detected in the welds. Pulse Echo ultrasonic inspection requires the use of three transducers from each side of the weld. A zero degree compression transducer and two angle transducers, most likely 60° or 70°. The advantage of this techniques is that it provides positional information as to the location of t
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Reports on the topic "The diffraction of waves on the reflectors"

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Matthew S. Schneider, Marc A. Meyers, and Bimal Kad. Progress Report for In-situ Diffraction from Hohlraum-driven Shock Waves in Solids. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/809052.

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2

Wang, Te-Hui, and Tatsuo Itoh. Confirmation of Slow-Waves in a Crosstie Overlay Coplanar Waveguide and Its Application to Band-Reject Gratings and Reflectors. Defense Technical Information Center, 1988. http://dx.doi.org/10.21236/ada194981.

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3

Mueller, M. Use of ellipsoidal reflectors to focus shock waves in water in lithotripsy. Die Fokussierung von Wasserstosswellen zur Lithotripsie durch verschiedene Ellipsoidreflektoren. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/7796715.

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4

Lozev and Spencer. L52023 Inspection of Welds in Thin-Wall Pipe Using Mechanized Ultrasonic Inspection. Pipeline Research Council International, Inc. (PRCI), 2003. http://dx.doi.org/10.55274/r0011117.

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Abstract:
Generally, the inspection of welds in pipes with a wall thickness less than 6 mm is performed using radiography.� Because radiography is very sensitive to the orientation of planar weld defects, these types of defects often go undetected.� In contrast, ultrasonic testing (UT) offers a better solution for detecting and sizing of these defects. In this project a method to inspect welds in thin-walled pipe less than 6-mm thick using mechanized ultrasonic weld inspection was developed.�The project investigated the application of time-based high-frequency (up to 15 MHz) single/multi-probe technique
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