Results 1 to 10 of about 251,471 (303)
A reconfigurable all-optical ultrasound transducer array for 3D endoscopic imaging [PDF]
Scientific Reports, 2017 A miniature all-optical ultrasound imaging system is presented that generates three-dimensional images using a stationary, real acoustic source aperture. Discrete acoustic sources were sequentially addressed by scanning a focussed optical beam across the
Erwin J. Alles +5 more
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Range estimation of a moving source using interference patterns in deep water [PDF]
JASA Express Letters, 2022 The frequency-range interference patterns of the acoustic field in the shadow zone of deep water correlate with the source location. However, extraction of such interference structure requires a broadband source and fails for narrowband signals.
Yuhan Liu +4 more
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Acoustic Emission Source Location Using Finite Element Generated Delta-T Mapping
Sensors, 2022 One of the most significant benefits of Acoustic Emission (AE) testing over other Non-Destructive Evaluation (NDE) techniques lies in its damage location capability over a wide area.
Han Yang +5 more
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An Acoustic Source Localization Method Using a Drone-Mounted Phased Microphone Array
Drones, 2021 Currently, the detection of targets using drone-mounted imaging equipment is a very useful technique and is being utilized in many areas. In this study, we focus on acoustic signal detection with a drone detecting targets where sounds occur, unlike image-
Yeong-Ju Go, Jong-Soo Choi
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Sensors, 2021 Acoustic source localization in a large pressure vessel or a storage tank-type cylindrical structure is important in preventing structural failure. However, this can be challenging, especially for cylindrical pressure vessels and tanks that are made of ...
Jia Fu +3 more
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Sensors, 2020 A closed-form method of acoustic emission (AE) source location for a velocity-free system using complete time difference of arrival (TDOA) measurements is proposed in this paper.
Zilong Zhou +4 more
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Three-dimensional localization of point acoustic sources using a planar microphone array combined with beamforming [PDF]
Royal Society Open Science, 2018 This paper presents a beamforming-based acoustic imaging (BBAI) method employing a two-dimensional (2D) microphone array that not only can locate an acoustic source in the XY plane parallel to the array, but can also identify the distance between the ...
Hao Ding +4 more
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Advanced Acoustic Emission Source Location in Aircraft Structural Testing
IOP Conference Series: Materials Science and Engineering, 2021 Abstract Acoustic emission (AE) is an in situ Structural Health Monitoring (SHM) technique, where a structure is monitored for the ultrasonic waves produced due to crack growth. A major challenge with AE when applied to aircraft, and other complex structures, is that wave propagation is significantly affected by stiffeners, holes ...
Grigg, Stephen +3 more
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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 +2 more
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Hsu-Nielsen source acoustic emission data on a concrete block
Data in Brief, 2019 Data presented in this paper are utilized in the paper entitled “Acoustic Emission Bayesian Source Location: Onset Time Challenge” [1]. Hsu-Nielsen source which also known as pencil lead break (PLB), is an artificial method of generating acoustic ...
Ramin Madarshahian +4 more
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