Journal ArticleDOI
Phased acoustic emission sensor array for localizing radial and axial positions of defects in hollow structures
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TLDR
In this paper, a phase array acoustic emission (AE) localization strategy is introduced to localize both radial and axial positions of defects by considering the actual trajectory of propagating elastic waves.About:
This article is published in Measurement.The article was published on 2020-02-01. It has received 17 citations till now. The article focuses on the topics: Acoustic emission & Sensor array.read more
Citations
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Journal ArticleDOI
Cluster-based sensor selection framework for acoustic emission source localization in concrete
TL;DR: In this paper , a new cluster-based sensor selection framework is developed for selecting the best sensor combinations before applying the source localization algorithm, which is based on the cross-correlation characteristics of signal features for single AE events or cluster analyses for large datasets.
Proceedings ArticleDOI
Influence of aggregate and inclusion size on ultrasonic tomography in concrete
TL;DR: In this article , an optimum transducer arrangement and tomography algorithms in terms of ray-trace method was proposed to achieve the high accurate and resolution of tomography in concrete, and the comparison of tomographic images between the imaged location and the embedded location was evaluated and then tomographic states was assessed accordingly.
Journal ArticleDOI
Magnetic accumulation effect on the inner and outer surfaces of pipeline magnetic penetration in natural environment
TL;DR: In this article , the authors analyzed the magnetic field inside and outside a pipeline by means of principle deduction, finite element simulation, and sensor measurement, and showed that the distribution of magnetic field in the pipeline under the excitation of the geomagnetic field has a very obvious regularity, which can meet the needs of pipeline defect detection.
Journal ArticleDOI
Influence of Stochastic Aggregate on Ultrasound Propagation in Concrete
TL;DR: In this paper , the influence of aggregate on the propagation velocity and attenuation of ultrasonic wave in concrete was investigated and it was found that the reliability of the ultrasonic test depends on the frequency and aggregate.
Proceedings ArticleDOI
The efficiency of arrival time picking methods for acoustic emission source localization in structures with simultaneous damage mechanisms
TL;DR: In this paper , a wavelet transformation technique was applied to the waveform to decompose the complex multi-frequency signal into a family of single-frequency wavelets, and a damage-related wavelet was selected based on the wavelet coefficients in wavelet spectrogram.
References
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Book
Ultrasonic Guided Waves in Solid Media
TL;DR: The semi-analytical finite element method (SAFE) has been used for guided wave modeling as discussed by the authors, which has been shown to be useful in the analysis and display of non-destructive testing.
Journal ArticleDOI
Strategies for reliable automatic onset time picking of acoustic emissions and of ultrasound signals in concrete.
TL;DR: The AIC-picker is compared to an automatic onset detection algorithm based on the Hinkley criterion and also adapted to acoustic emissions and produces sufficient reliable results for ultrasound signals where the deviation from the manual picks varies between 2% and 4%.
Journal ArticleDOI
Reliable onset time determination and source location of acoustic emissions in concrete structures
TL;DR: In this paper, an improved approach based on the Akaike Information Criterion (AIC) is proposed to provide more reliable onset time determination of acoustic emission (AE) signals.
Journal ArticleDOI
Acoustic Detection of Leaks in Water Pipelines Using Measurements inside Pipe
TL;DR: In this paper, the feasibility and limitations of using in-pipe acoustic measurements for leak detection were addressed. And the authors presented an experimental investigation that addressed the feasibility of using acoustic measurements inside a water transmission pipeline.
Journal ArticleDOI
Novel leak localization in pressurized pipeline networks using acoustic emission and geometric connectivity
Didem Ozevin,James Harding +1 more
TL;DR: In this paper, a leak localization approach is proposed for pipeline networks spread in a two dimensional configuration, and the approach is to determine arrival time differences using cross correlation function, and introduce the geometric connectivity in order to identify the path that the leak waves should propagate to reach the AE sensors.