Testing the efficiency of passive acoustic monitoring and active monitoring in anuran community in lotic environments in Itinguçu State Park, Peruíbe-SP [PDF]
Anais da Academia Brasileira de CiênciasThe following work presents the first study applying the passive acoustic monitoring of anurans at lotic environments for a long time. This study aims to test the efficiency of the passive acoustic monitoring method and active monitoring in detecting ...
ISABEL G. VELASCO, IVAN NUNES
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Acoustic Wake-Up Technology for Microsystems: A Review
Micromachines, 2023 Microsystems with capabilities of acoustic signal perception and recognition are widely used in unattended monitoring applications. In order to realize long-term and large-scale monitoring, microsystems with ultra-low power consumption are always ...
Deng Yang, Jiahao Zhao
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A fisheries acoustic multi-frequency indicator to inform on large scale spatial patterns of aquatic pelagic ecosystems [PDF]
, 2013 Fisheries acoustic instruments provide information on four major groups in aquatic ecosystems: fish with and without swim bladder (tertiary and quaternary consumers), fluidlike zooplankton (secondary consumers) and small gas bearing organisms such as ...
Bergen, Laurent, Trenkel, Verena
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Underwater Radiated Noise Prediction Method of Cabin Structures under Hybrid Excitation
Applied Sciences, 2023 Aiming at the engineering limitations of traditional ship vibration online monitoring and noise prediction methods, this paper proposes a method for online monitoring and underwater radiation noise prediction of cabin structures’ vibration and noise ...
Qiang Guo +3 more
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Relationship between ae signal strength and absolute energy in determining damage classification of concrete structures [PDF]
, 2006 The most efficient tools in real monitoring system is acoustic emission (AE). This technique can be used to identify the damage classifications in RC structure.
Abdullah, Siti Radziah +2 more
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In-situ monitoring of sub-surface and internal defects in additive manufacturing: A review
Materials & Design, 2022 Additive Manufacturing (AM), or 3D printing, processes depend on a user-defined set of optimized process parameters to create a component. Monitoring and control of AM processes in real-time can help achieve process stability and repeatability to produce
Youssef AbouelNour, Nikhil Gupta
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Acoustic energy transmission in cast iron pipelines [PDF]
, 2015 In this paper we propose acoustic power transfer as a method for the remote powering of pipeline sensor nodes. A theoretical framework of acoustic power propagation in the ceramic transducers and the metal structures is drawn, based on the Mason ...
Boyle, D +3 more
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Time-domain Brillouin scattering assisted by diffraction gratings [PDF]
, 2017 Absorption of ultrashort laser pulses in a metallic grating deposited on a transparent sample launches coherent compression/dilatation acoustic pulses in directions of different orders of acoustic diffraction. Their propagation is detected by the delayed
Chaban, Ievgeniia +4 more
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Acoustical system monitoring in complex acoustic environments
2019 2nd International Colloquium on Smart Grid Metrology (SMAGRIMET), 2019 This paper investigates the impact of room acoustics and background noise on acoustical monitoring of the desired sound source and in addition, if already known room acoustics parameters can be used to increase robustness of such monitoring system.
Bogdanić, Lovre, Suhanek, Mia
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Acoustic monitoring of beams. [PDF]
The Journal of the Acoustical Society of America, 1991 The vibrations of a beam can be used to monitor its structural integrity. For example, this technique could be used to monitor the health of a space platform, which is essentially a three-dimensional truss made of several beams. The impulse response of a beam with and without a crack is calculated using a numerical method, to determine the eigenmodes ...
Xiuting Cheng, Robert D. Finch
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