Results 11 to 20 of about 4,257,415 (292)

High-Precision Source Positions Obtained by the Combined Inversion of Different-Order Local Wavenumbers Derived from Aeromagnetic Data

Remote Sensing, 2022
The aeromagnetic survey is a common remote sensing tool for detecting iron deposits. The local wavenumber of a magnetic anomaly is used to interpret the edges or positions of the sources, and can involve first- or second-order local wavenumbers.
Guoqing Ma, Nan Wang, Lili Li
doaj   +1 more source

Microseismic Source Location Method and Application Based on NM-PSO Algorithm

Applied Sciences, 2022
Microseismic source location is the core of microseismic monitoring technology in coal mining; it is also the advantage of microseismic monitoring technology compared with other monitoring methods.
Ze Liao, Tao Feng, Weijian Yu, Dongge Cui, Genshui Wu   +4 more
doaj   +1 more source

Multichannel Detection of Acoustic Emissions and Localization of the Source with External and Internal Sensors for Partial Discharge Monitoring of Power Transformers

Energies, 2021
The detection of acoustic emissions with multiple channels and different kinds of sensors (external ultrasound electronic sensors and internal optical fiber sensors) for monitoring power transformers is presented.
Iago Búa-Núñez, Julio E. Posada-Román, José A. García-Souto   +2 more
doaj   +1 more source

Sensitivity analysis of anisotropic parameter inversion simultaneously with microseismic source location in layered VTI media

Frontiers in Earth Science, 2022
The hypocenters of microseismic events induced by hydraulic fracturing are conventionally located with an initial model established from well logs or perforation shots.
Yikang Zheng, Yikang Zheng, Yibo Wang, Yibo Wang   +3 more
doaj   +1 more source

A Comprehensive Method to Mitigate Forced Oscillations in Large Interconnected Power Grids

IEEE Access, 2021
Multiple severe forced oscillation events have recently been observed across the North American interconnections and around the world. These forced oscillations have caused power swings, limited power transfer capability, damaged equipment, and persisted
Lin Zhu, Wenpeng Yu, Zhihao Jiang, Chengwen Zhang, Yi Zhao, Jiaojiao Dong, Weikang Wang, Yilu Liu, Evangelos Farantatos, Deepak Ramasubramanian, Andrew Arana, Ryan Quint   +11 more
doaj   +1 more source

Diffractive triangulation of radiative point sources [PDF]

, 2017
We describe a general method to determine the location of a point source of waves relative to a twodimensional single-crystalline active pixel detector.
A. Winkelmann, C. Trager-Cowan, D. Maneuski, Dingley D. J., Engler O., Faugeras O. D., G. Naresh-Kumar, Gonzalez R. C., K. P. Mingard, Morawiec A., Press W. H., S. Vespucci, Schwartz A. J., V. O'Shea   +13 more
core   +5 more sources

A Comparison of Two Types of Acoustic Emission Sensors for the Characterization of Hydrogen-Induced Cracking

Sensors, 2023
Acoustic emission (AE) technology is a non-destructive testing (NDT) technique that is able to monitor the process of hydrogen-induced cracking (HIC).
Dandan Liu, Bin Wang, Han Yang, Stephen Grigg   +3 more
doaj   +1 more source

A Weighted Linear Least Squares Location Method of an Acoustic Emission Source without Measuring Wave Velocity

Sensors, 2020
The location of an acoustic emission (AE) source is crucial for predicting and controlling potential hazards. In this paper, a novel weighted linear least squares location method for AE sources without measuring wave velocity is proposed.
Zilong Zhou, Yichao Rui, Xin Cai, Ruishan Cheng, Xueming Du, Jianyou Lu   +5 more
doaj   +1 more source

A New Acoustic Emission Source Location Method Using Tri-Variate Kernel Density Estimator

IEEE Access, 2019
A new AE location method using tri-variate kernel density estimator is developed in this paper. Firstly, combinations of every six arrivals are obtained from a multi-sensor location system, and the preliminary location results are obtained by solving the
Zilong Zhou, Riyan Lan, Yichao Rui, Jing Zhou, Longjun Dong, Ruishan Cheng, Xin Cai   +6 more
doaj   +1 more source

Verification of 3D AE Source Location Technique in Triaxial Compression Tests Using Pencil Lead Break Sources on a Cylindrical Metal Specimen

Applied Sciences, 2022
Recently, the acoustic emission (AE) technique has been widely applied in the field of geotechnical engineering. One of the main applications of this technique is to locate damage sources, which is known as the AE source location technique.
Xianfeng Li, Ali Naqi, Zain Maqsood, Junichi Koseki   +3 more
doaj   +1 more source