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Sparsity-Cognizant Source Location Mapping for Underwater Acoustics
MILCOM 2013 - 2013 IEEE Military Communications Conference, 2013Matched-field processing (MFP) is a generalization of classical beamforming that has been traditionally used in underwater source localization problems. However, MFP suffers from low resolution, sensitivity to model mismatch, and is challenged when more than one source is present.
Pedro A. Forero, Paul A. Baxley
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Optimizing Secondary Source Location in Acoustic ANC Systems
2006 2nd International Conference on Information & Communication Technologies, 2006In this paper we show that the location of the secondary source is very important for acoustic ANC systems. We calculate sound propagation in a simulated room with complete reflection of sound waves from the walls by FDTD1method. Then, we choose criteria for noise pressure level and find the best node for anti-noise source, and after that, we estimate ...
S.A. Seyedin, M.H. Abedi
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Acoustic Emission Source Location Based on Signal Features
Advanced Materials Research, 2006Good knowledge of acoustic emission (AE) source location is the basic requirement for further damage mechanism characterization. Calculation of the AE source location is mostly based on arrival time differences of the signals recorded by different transducers.
Michal Blahacek +2 more
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Problems of Locating Acoustic Emission Sources
Russian Journal of Nondestructive Testing, 2021Yu. G. Matvienko +4 more
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Source location of acoustic emission in diesel engines
Mechanical Systems and Signal Processing, 2007Abstract This paper is the third in a series developing methods of mapping acoustic emission (AE) signals and wave propagation in engines and focuses on source location techniques for the multi-source signals on relatively complex structures typical of machinery applications. Two source location techniques, a traditional wave velocity-based and an AE
P. Nivesrangsan, J.A. Steel, R.L. Reuben
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Hardware Design of Anembedded Real-Time Acoustic Source Location Detector
2014 6th International Conference on New Technologies, Mobility and Security (NTMS), 2014This paper presents an embedded system that detects the 3 dimensional location of an acoustic source using a multiple microphone constellation. The system consists of a field programmable gate array (FPGA)that is used as main processing unit and the necessary peripherals.
ERTÜRK, SARP +3 more
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Problems of Acoustic Sources Location in 3D Medium
Journal of Thermoplastic Composite Materials, 2005Acoustic methods have a great potential for material characterization in industries because they can evaluate fatigue and fracture of thermoplastic materials without destroying them by using special signatures of dissipated energy as active or passive acoustic signals, which are generated from materials during the service period of time or testing ...
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Hyperbolic Source Location of Crack Related Acoustic Emission in Bone
Journal of Biomechanical Engineering, 2012Little work has been done on the localization of microcracks in bone using acoustic emission. Microcrack localization is useful to study the fracture process in bone and to prevent fractures in patients. Locating microcracks that occur before fracture allows one to predict where fracture will occur if continued stress is applied to the bone. Two source
John, O'Toole +3 more
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Acoustic Emission Source Location on Composite Laminates
2010Composite materials are increasingly used for structural applications because of their characteristics of lightness and strength. However a major disadvantage is the difficult in visualizing on the outside the damage produced by a stress of exercise or an accidental event.
LOPRESTO, VALENTINA +4 more
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Location of acoustic emission sources generated by air flow
Ultrasonics, 2000The location of continuous acoustic emission sources is a difficult problem of non-destructive testing. This article describes one-dimensional location of continuous acoustic emission sources by using an intelligent locator. The intelligent locator solves a location problem based on learning from examples. To verify whether continuous acoustic emission
, Kosel, , Grabec, , Muzic
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