Results 11 to 20 of about 408,211 (219)

Experimental Investigation on the Deformability, Ultrasonic Wave Propagation, and Acoustic Emission of Rock Salt Under Triaxial Compression

Applied Sciences, 2019
Ultrasonic waves, which constitute an active testing method, and acoustic emissions (AE), which can be applied as passive testing technology, can reveal rock damage processes in different ways. However, few studies so far have simultaneously adopted both,
Haoran Li, Zhikai Dong, Zuolin Ouyang, Bo Liu, Wei Yuan, Hongwu Yin   +5 more
doaj   +1 more source

Combination of Image-Based Documentation and Augmented Reality for Structural Health Monitoring and Building Pathology

Frontiers in Built Environment, 2019
With the current deterioration rate of existing infrastructure, the importance of intervention and preservation efforts such as on-site visual inspections, non-destructive evaluation, structural health monitoring (SHM), and building pathology are on the ...
Rebecca Napolitano, Zachary Liu, Carl Sun, Branko Glisic   +3 more
doaj   +1 more source

Bridge Health Monitoring Using Strain Data and High-Fidelity Finite Element Analysis

Sensors, 2022
This article presented a physics-based structural health monitoring (SHM) approach applied to a pretensioned adjacent concrete box beams bridge in order to predict the deformations associated with the presence of transient loads.
Behzad Ghahremani, Alireza Enshaeian, Piervincenzo Rizzo   +2 more
doaj   +1 more source

Vestas V90-3MW Wind Turbine Gearbox Health Assessment Using a Vibration-Based Condition Monitoring System

Shock and Vibration, 2016
Reliable monitoring for the early fault diagnosis of gearbox faults is of great concern for the wind industry. This paper presents a novel approach for health condition monitoring (CM) and fault diagnosis in wind turbine gearboxes using vibration ...
A. Romero, Y. Lage, S. Soua, B. Wang, T.-H. Gan   +4 more
doaj   +1 more source

A Highly Integrated BOTDA/XFG Sensor on a Single Fiber for Simultaneous Multi-Parameter Monitoring of Slopes

Sensors, 2019
A highly integrated sensing technology, combining a stimulated Brillouin scattering-based distributed sensor with XFG (fiber Bragg grating (FBG) and long-period fiber grating (LPFG)) sensors on a single fiber, is proposed for the simultaneous measurement
Feng Li, Weigang Zhao, Hongbin Xu, Shupeng Wang, Yanliang Du   +4 more
doaj   +1 more source

Design of a Distributedly Active Morphing Wing Based on Digital Metamaterials

Aerospace, 2022
Morphing wings are a typical application of shape-adaptive structures in aviation, which play an important role in improving the comprehensive performance of an aircraft.
Zhigang Wang, Qi Wu, Yifei Lu, Panpan Bao, Yu Yang, Daochun Li, Xiasheng Sun, Jinwu Xiang   +7 more
doaj   +1 more source

Influence of Compaction Level on the Water-Heat-Vapor Characteristics of Unsaturated Coarse-Grained Fillings Exposed to Freezing and Thawing

Advances in Civil Engineering, 2020
Compaction level is an important control index to guarantee subgrade stability. Under freezing-thawing cycles, water-heat-vapor characteristics due to different compaction levels of unsaturated coarse-grained fillings of high-speed railway (HSR) subgrade
Yuzhi Zhang, An Wen, Weigang Zhao, Xiaojie Liang, Pei Li   +4 more
doaj   +1 more source

Acoustic Emission Monitoring of Fatigue Crack Growth in Mooring Chains

Applied Sciences, 2019
Offshore installations are subject to perpetual fatigue loading and are usually very hard to inspect. Close visual inspection from the turret is usually too hazardous for divers and is not possible with remotely operated vehicles (ROVs) because of the ...
Ángela Angulo, Jialin Tang, Ali Khadimallah, Slim Soua, Cristinel Mares, Tat-Hean Gan   +5 more
doaj   +1 more source

Experimental Study of Damage Development in Salt Rock under Uniaxial Stress Using Ultrasonic Velocity and Acoustic Emissions

Applied Sciences, 2018
Ultrasonic waves and acoustic emissions (AE) are important technologies to reveal rock damage. However, few studies have simultaneously monitored both types of data in the same experiment because of limitations on the experimental apparatus.
Haoran Li, Zhikai Dong, Yun Yang, Bo Liu, Mingyi Chen, Wenjun Jing   +5 more
doaj   +1 more source

High Precision, Small Size and Flexible FBG Strain Sensor for Slope Model Monitoring

Sensors, 2019
In this paper, a soft fiber Bragg grating (FBG) strain sensor was constructed of a rubber strip, FBGs and steel plates, which exhibits the advantages of high precision and a small size.
Hongbin Xu, Xinyu Zheng, Weigang Zhao, Xu Sun, Feng Li, Yanliang Du, Bo Liu, Yang Gao   +7 more
doaj   +1 more source