Pipeline leak detection using the matched-field processing method

X Wang, MS Ghidaoui - Journal of Hydraulic Engineering, 2018 - ascelibrary.org
A transient-based leakage detection method using a matched-field processing (MFP)
scheme is formulated and applied. It is found to be efficient, robust, accurate, and provides a …

Identification of multiple leaks in pipeline: Linearized model, maximum likelihood, and super-resolution localization

X Wang, MS Ghidaoui - Mechanical Systems and Signal Processing, 2018 - Elsevier
This paper considers the problem of identifying multiple leaks in a water-filled pipeline
based on inverse transient wave theory. The analytical solution to this problem involves …

Grid-moving equivalent source method in a probability framework for the transformer discharge fault localization

L Yu, C Zhang, R Wang, G Yuan, X Wang - Measurement, 2022 - Elsevier
The transformer discharge fault localization is important for the power supply reliability. The
audible sound radiated by the transformer can reflect the extensive operation information …

Identification of multiple leaks in pipeline II: Iterative beamforming and leak number estimation

X Wang, MS Ghidaoui - Mechanical Systems and Signal Processing, 2019 - Elsevier
This paper considers the problem of detecting multiple leaks in a water-filled pipe using
transient waves. A previous paper by the authors proposes a maximum likelihood (ML) …

Theoretical analysis of beamforming steering vector formulations for acoustic source localization

G Chardon - Journal of Sound and Vibration, 2022 - Elsevier
In three-dimensional acoustic source localization, setting the steering vector is an important
choice. Four steering vector formulations are frequently used. In the noiseless case, two of …

Identification of multiple leaks in pipeline III: Experimental results

X Wang, MS Ghidaoui, J Lin - Mechanical Systems and Signal Processing, 2019 - Elsevier
Identifying multiple leaks in a water supply pipe is challenging because pipe systems are
complex and many parameters need to be estimated. In order to solve this problem, in Part I …

A grid-free global optimization algorithm for sound sources localization in three-dimensional reverberant environments

Q Zhai, F Ning, Z Deng, H Hou, J Li, J Wei… - Mechanical Systems and …, 2023 - Elsevier
In this work, a new grid-free global optimization algorithm that combined the image source
model (ISM) and state transition algorithm (STA) was proposed to realize the sound source …

Localizing two acoustic emission sources simultaneously using beamforming and singular value decomposition

T He, Y Xie, Y Shan, X Liu - Ultrasonics, 2018 - Elsevier
Aiming at the issue that the weak AE source is easy to be lost when localizing simultaneous
two acoustic emission (AE) sources by the beamforming method (BFM), a novel method is …

Low-frequency acoustic source localization based on the cross-spectral time reversal method corrected in wavenumber domain

Y Li, M Li, D Feng, W Pan, L Wei, D Yang - Measurement, 2022 - Elsevier
Near-filed acoustic holography can break the half wavelength limit by reversing the
propagation matrix and achieve high-resolution for low-frequency source localization, but it …

Sound pressure level real-time monitoring of outdoor directional noise

Y Chen, M Wu, L Lu, X Fang, J Yang - Applied Acoustics, 2023 - Elsevier
A single microphone can't select an efficient target signal from a mixed sound source when
measuring the sound pressure level (SPL) of a target noise source in an outdoor …