Results 41 to 50 of about 1,418,898 (156)
Carsologica SinicaKarst collapses are major geological hazards that severely threaten the safety of engineering infrastructure due to their concealed nature, complex formation mechanisms, and sudden occurrence.
Hongxu PAN +4 more
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Weakening Detection of Composite Structure Adhesive Layer Based on Nonlinear Guided Waves
Applied SciencesIn this study, a detection method utilizing nonlinear ultrasonic guided waves is presented to tackle the difficulties in detecting localized damage and weakening in bonded composite structures.
Fanqiang Bu +6 more
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, 2006 The paper utilizes previously developed microtremor simulation technique to evaluate the reliability of Rayleigh wave dispersion curve estimated by f–k spectral analysis of microtremor array measurement.
Sugimura, Yoshihiro +2 more
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Earthquake ScienceWave propagation in horizontally layered media is a classical problem in seismic-wave theory. In semi-infinite space, a nondispersive Rayleigh wave mode exists, and the eigendisplacement decays exponentially with depth. In a layered model with increasing
Shaotong Wang, Laiyu Lu
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Applied Sciences, 2018 This paper presents a novel fast analysis of wave speed (FAWS) algorithm from the waveforms recorded by a random-spaced geophone array based on a compressive sensing (CS) platform.
Zhuoshi Chen +3 more
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, 2012 Colour photograph of the completed Curve which looms large next to the older buildings of the ...
Hyde, Colin;
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, 2014 Colour photograph of the interior of the Curve Theatre, Leicester, showing lighting equipment in the stage ...
Barnes, Amy
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Applied Sciences, 2019 Remote-controlled, non-destructive testing is necessary to detect corrosion of the reinforced concrete structures at the Fukushima Daiichi Nuclear Power Plant (NPP) de-commissioning site. This work aims to demonstrate that laser-induced ultrasonic guided
Akinori Furusawa +2 more
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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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