Results 11 to 20 of about 3,237,360 (342)
Modelling Of Phased Array Technique To Propagation Specific Mode Of Ultrasonic Waves In Single And Multi-Layer Plates [PDF]
مجله مدل سازی در مهندسی, 2015 In this paper, the propagation of ultrasonic guided wave in the isotropic single-layer and multi-layer plate with the assumption that layers are fully connected to each other and top and bottom surfaces of plate are free stress, are investigated and the ...
amin mirzakhani nafchi
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Earth and Space Science, 2023 Dispersion curves for surface wave recordings are required input for many surface wave inversion methods to image subsurface shear wave velocity distribution, while the conventional extraction of dispersion curves requires significant amount of human ...
Hai Yao +4 more
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Accelerated dispersion curve calculations for periodic vibro-acoustic structures
Frontiers in Mechanical Engineering, 2022 Over the years, metamaterials have shown their potential in a wide range of different disciplines, e.g. optics, electromagnetics, dynamics etc. Metamaterials are, often periodic, engineered structures made of conventional materials but which exhibit ...
Vanessa Cool +9 more
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Tectonics, 2020 An azimuth‐dependent dispersion curve inversion (ADDCI) method is applied to Rayleigh waves to extract 3D velocity and azimuthal anisotropy. The synthetic tests show that the ADDCI method is able to extract azimuthal anisotropy at different depths.
C. Liang +5 more
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Applied Sciences, 2023 Site velocity structure determination and stratigraphic division are important purposes of microtremor survey, and the precision of dispersion curves is an important factor affecting the accuracy of microtremor survey.
Xingang Mou +5 more
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Characterization of Sobradinho landslide in fluvial valley using MASW and ERT methods
REM: International Engineering Journal, 2020 Landslides can substantially impact the fluvial systems, which is why the continuous mapping of their extent, evolution and stability assessment is crucial. However, in such environments, material identification (e.g.
Yawar Hussain +6 more
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Inversion of microtremor recordings dispersion curve based on geological unit
矿业科学学报, 2022 The urban microtremor exploration technology is a method that detects urban underground structures by using the weak vibration of environment.The surface wave is dominant in the microtremor recordings, and the surface wave dispersion curve can be ...
Zhao Hongpeng, He Dengke, Hong Yü
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Crustal structure below Popocat\'epetl Volcano (Mexico) from analysis of Rayleigh waves [PDF]
, 2007 An array of ten broadband stations was installed on the Popocat\'epetl volcano (Mexico) for five months between October 2002 and February 2003. 26 regional and teleseismic earthquakes were selected and filtered in the frequency time domain to extract the
Almendros +27 more
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Application of Microtremor Survey Technology in a Coal Mine Goaf
Applied Sciences, 2022 Goafs are one of the main factors that endanger the safety of mining areas, leading to roadway collapse, land subsidence and other problems. Determining how to detect goafs accurately and efficiently is an important issue faced in engineering geophysical
Chuantao Yu, Zheng Wang, Mingyu Tang
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Dizhen xuebao, 2020 地球物理反演浅地表土层波速剖面通常基于初始速度结构模型，为避免对地勘资料产生较多依赖，充分利用地震和背景噪声等被动源观测记录，快速简便地构建出土层反演的初始模型，本文基于场地土层的频散曲线和水平与竖向谱比提出了一种改进半波长法。该方法首先通过水平与竖向谱比确定场地土层的卓越频率，获取场地覆盖层厚度，确定反演所需的频带范围；其次，利用瑞雷波相速度对剪切波速的偏导数随土层深度的变化规律反演出场地的初始速度结构，并结合工程场地勘探中的半波长法 ...
Jixin Wang +3 more
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