Results 21 to 30 of about 251,471 (303)
Passive element enriched photoacoustic computed tomography (PER PACT) for simultaneous imaging of acoustic propagation properties and light absorption\ud [PDF]
, 2011 We present a ‘hybrid’ imaging approach which can image both light absorption properties and acoustic transmission properties of an object in a two-dimensional slice using a computed tomography (CT) photoacoustic imager.
Hespen, J.C.G. van +8 more
core +5 more sources
Acoustic Emission Source Location Using a Distributed Feedback Fiber Laser Rosette
Sensors, 2013 This paper proposes an approach for acoustic emission (AE) source localization in a large marble stone using distributed feedback (DFB) fiber lasers. The aim of this study is to detect damage in structures such as those found in civil applications.
Fang Li, Wenzhu Huang, Wentao Zhang
doaj +1 more source
APL Photonics, 2020 Detection and location of the source of acoustic emission in a thin aluminum panel is demonstrated using a multichannel fiber laser sensor system. Acoustic emission generated by a crack in an aluminum panel used as a test coupon in an accelerated fatigue
Caitlin R. S. Williams +6 more
doaj +1 more source
Jet noise source location via acoustic intensity [PDF]
The Journal of the Acoustical Society of America, 1985 It is well known that sources of jet noise are described by a variety of models; thus there is no unique source distribution. If no assumptions are made about the nature of the sources, then one can infer virtual source distributions from certain farfield measurements.
openaire +1 more source
Sound Scattering and Its Reduction by a Janus Sphere Type [PDF]
, 2014 Copyright © 2014 Delyia Kim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Sound
AVITAL, E, Kim, D, Miloh, T
core +3 more sources
Efficacy of Acoustic Triangulation for Gray Wolves
Wildlife Society Bulletin, 2020 Acoustic triangulation is a unique, relatively noninvasive monitoring approach that can inform our understanding of a species’ distribution in time and space. Acoustic triangulation relies on standard triangulation techniques to determine the location of
Jordyn R. O'Gara +5 more
doaj +1 more source
Diagnostics of machinery by acoustic source location [PDF]
The Journal of the Acoustical Society of America, 1976 Signature Analysis has long been used to detect faults in a wide variety of machines. Recent efforts to locate faults by acoustic methods is illustrated by the location of corona in large power transformers. Excessive corona can damage insulation and require costly shutdown and repair.
openaire +1 more source
Clusters of Shaped Ultrasonic Transducers for Lamb Waves’ DoA Estimation
Applied Sciences, 2020 The direction of arrival (DoA) estimation of Lamb waves is a fundamental task to locate acoustic events, such as those caused by impacts in plates or shells. To perform this task, a novel cluster of piezoelectric sensors is presented in this work.
Marco Dibiase, Luca De Marchi
doaj +1 more source
Study on Backfill Acoustic Emission Characteristics and Source Location under Uniaxial Compressive
Advances in Civil Engineering, 2022 This study investigates the acoustic emission (AE) characteristic of cemented tailings backfill (CTB) under uniaxial compressive loading. A classified tailings material source from Wushan Copper Mine was used to prepare cylindrical CTB samples.
Caixing Shi +4 more
doaj +1 more source
Study and Analysis of the Thunder Source Location Error Based on Acoustic Ray-Tracing
Remote SensingError analysis and estimation of thunder source location results is a prerequisite for obtaining accurate location results of thunder sources, which is of great significance for a deeper understanding of the physical process of lightning channel ...
Jinyuan Guo +6 more
doaj +1 more source