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Acoustic emission leak source location
The Journal of the Acoustical Society of America, 1992A method and apparatus for locating a leak which produces a continuous acoustic emission having background noise and spikes, comprises continuously monitoring the acoustic emissions using spaced apart detectors which produce signals having background noise and spikes corresponding to those of the continuous acoustic emissions.
John E. Coulter +2 more
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Acoustic source location using a neural network
The Journal of the Acoustical Society of America, 1997This paper presents an artificial neural network (ANN) approach to locate an acoustic source and determine its distance from a microphone. First, two sets of experiments were performed to locate a rattling bolt on a plate using the unwrapped phase method, by comparing the acceleration signal from the vibrating plate to the acoustic signal received by ...
Tarun Bhatt +2 more
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Graphics of acoustic emission point source location
Proceedings. IEEE Energy and Information Technologies in the Southeast', 2003Spherical coordinates of acoustic emission point-sources are computed using test data collected using a specialized hardware/computer and the software developed for this purpose. A data file of spherical coordinates thus obtained is used for a visual display of acoustic emission point-sources, leading to determination of developing failure patterns for
O. Burenko, J.W. Whittaker
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Estimation of the location of a farfield acoustic source
The Journal of the Acoustical Society of America, 2005A backward integration method for estimating the location of a source of sound waves in the atmosphere is presented. This geometric acoustics method is based upon the analysis of microphone array measurements to determine the incoming ray direction in three dimensions.
Jay C, Hardin +2 more
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Multiple Acoustic Sources Location Based on Blind Source Separation
2005In this paper we study location of multiple acoustic sources by blind source separation (BSS) method, which based on canonical correlation analysis (CCA). The receiving array is a sparse array. This array is composed of three separated subarrays. From the receiving data set, we can obtain the separate components by CCA. After a simple correlation, time
Gaoming Huang, Luxi Yang, Zhenya He
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Locating the acoustic source in an anisotropic plate
Structural Health Monitoring, 2011By analyzing the arrival times of guided waves, the acoustic source in a plate is predicted. Solving this problem is important for continuous health monitoring of structures. Several techniques based on the triangulation principle have been proposed for this purpose but they do not work for anisotropic plates.
M Koabaz +3 more
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Methods for passively locating an acoustic source
ICASSP '77. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005The maximum likelihood (ML) processor is presented for passively estimating range and bearing to an acoustic source. The source signal is observed for a finite time duration at several sensors in the presence of uncorrelated noise. When the speed of sound in an isovelocity medium and the sensor positions are known the ML estimator for position ...
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Acoustic emission Bayesian source location: Onset time challenge
Mechanical Systems and Signal Processing, 2019Abstract Robust identification of the most accurate observed input data among a pool of observations is key in modeling and decision making. A statistically biased observed measurement deteriorates the predictive power of a model and affects decision-making ability based on the prediction of the model.
Ramin Madarshahian +2 more
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Measuring Jet Noise Source Locations with Acoustic Beamforming
53rd AIAA Aerospace Sciences Meeting, 2015Numerous methods have been used by the aeroacoustics community to locate noise sources of different frequencies in subsonic jets. These include: acoustic mirrors, microphone arrays, two-microphone methods, causality correlation and coherence techniques, acoustic beamforming, and automated source breakdown.
Nick P. Breen, Krishan K. Ahuja
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A new method for locating acoustic emission source
2010 2nd International Conference on Advanced Computer Control, 2010In the research of locating sudden acoustic emission source the transducers are generally arranged in special geometries in order to derive the equations which give acoustic emission source location, and to make the calculations simple. In this paper a new method for locating plane acoustic emission source is proposed by setting the transducers in a ...
Zhong-ning Zhang +4 more
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