Results 11 to 20 of about 3,183 (253)

Experimental Study on Influence of Temperature to Control Performance for Viscoelastic Materials Pounding Tuned Mass Damper

Frontiers in Materials, 2021
The pounding tuned mass damper (PTMD) is a novel passive damper that absorbs and dissipates energy by an auxiliary tuned spring-mass system. Viscoelastic materials are attached to the interface of the limitation collar in the PTMD so that the energy ...
Dehui Ye, Dehui Ye, Jie Tan, Jie Tan, Yabin Liang, Yabin Liang, Qian Feng, Qian Feng   +7 more
doaj   +1 more source

Estimation of Shallow Shear Velocity Structure in a Site with Weak Interlayer Based on Microtremor Array

Applied Sciences, 2022
A site condition survey is extremely important for the seismic fortification of major projects. The distribution of underlying weak interlayer in sites is extremely harmful to buildings.
Cong Jin, Song Lin, Jing Wang, Hongwei Zhou, Miao Cheng   +4 more
doaj   +1 more source

Experimental Evaluation of Miniature Impedance Board for Loosening Monitoring of the Threaded Pipe Connection

Frontiers in Physics, 2021
Electromechanical impedance (Electromechanical impedance)-based methods as potential nondestructive evaluation (NDT) techniques have been widely used in the field of structural health monitoring (SHM), especially for the civil, mechanical, and aerospace ...
Yabin Liang, Yabin Liang, Yabin Liang, Yabin Liang, Yixuan Chen, Yixuan Chen, Zuocai Zhang, Zuocai Zhang, Zuocai Zhang, Zuocai Zhang, Qian Feng, Qian Feng, Qian Feng, Qian Feng   +13 more
doaj   +1 more source

Application of Cross-hole Electromagnetic Wave Tomography in Three Dimensional Spatial Distribution of Karst

CT Lilun yu yingyong yanjiu, 2022
Karst development in limestone areas holds great potential hazards to the urban construction, Using the conventional way of drilling, it is difficult to fully identify the characteristics and scale of underground Karst development in urban Karst ...
Xiaohu DENG, Yanlin FU
doaj   +1 more source

Old - New Concrete Interfacial Bond Slip Monitoring in Anchored Rebar Reinforced Concrete Structure Using PZT Enabled Active Sensing

Frontiers in Materials, 2021
Post-installed anchor technology is widely used for structural strengthening and for retrofitting existing constructions. The old–new concrete interface associated with using this technology is of great significance in the shear capacity of concrete ...
Jian Jiang, Jian Jiang, Jian Jiang, Yixuan Chen, Junwu Dai   +4 more
doaj   +1 more source

Global growth of earthquake early warning

Science, 2022
Public-private partnerships provide a method for vastly expanding sensor ...
Allen, Richard M, Stogaitis, Marc
openaire   +4 more sources

Seismic-wave path attenuation and local site responses in eastern Guangdong province revealed by the ground-motion spectral analyses

Frontiers in Earth Science, 2023
In an effort to investigate the attenuation characteristics and site effects in eastern Guangdong, 659 strong-motion recordings received by 27 stations were selected for spectral analysis to separate path attenuation, site effects and source spectra. The
Huadeng Wu, Huadeng Wu, Huadeng Wu, Huadeng Wu, Ying Zhou, Yongmei Qian, Fang Yang, Gang Yu, Gang Yu, Gang Yu, Gang Yu, Guorui Wu, Yi Zhang, Yi Zhang, Yi Zhang, Yi Zhang   +15 more
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Axial Load Monitoring for Concrete Columns Using a Wearable Smart Hoop Based on the Piezoelectric Impedance Frequency Shift: A Feasibility Study

Advances in Civil Engineering, 2020
Concrete columns are critical in supporting the weight of an entire structural frame and also play a key role in force transferring among structural members.
Yabin Liang, Zhicheng Ye, Qian Feng
doaj   +1 more source

Earthquake early warning systems

, 2007
During the past few decades, economic losses and human casualties due to natural disasters increased exponentially on our planet, mainly because of the increased density of population and industry in high hazard areas. Although the prediction of earthquakes is not practicable yet, the present technology allows a prompt identification of the onset of ...
P. Gasparini, G. Manfredi, Jochen Zschau
  +7 more sources

Preliminary discussion on the earthquake early warning network of Jiangxi Province

地震科学进展, 2021
The earthquake early warning system is formed by seismic stations and the urgent information systems. Many seismic stations are added to the original seismic monitoring network and old operation systems are upgraded.
Si Yu, Tingting Tang
doaj   +1 more source