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Standard for acoustic metadata for passive acoustic monitoring
The Journal of the Acoustical Society of America, 2019Passive acoustic monitoring often relies on data collected with various instrumentation, by multiple research groups in different locations, under diverse conditions, and with a variety of data analysis methods. To make the output comparable and to preserve data for long time-series analysis, metadata needs to be reported in a standardized way.
Simone Baumann-Pickering, Marie A. Roch
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Active Acoustic Monitoring of Aquatic Life
2016Active acoustic monitoring (AAM) can be used to study the behavioral response of marine life and to mitigate harm during high-danger anthropogenic activities. This has been done in fish studies for many decades, and there are now case studies in which AAM has been used for marine mammal monitoring as well. This includes monitoring where the ranges, AAM
Peter J, Stein, Patrick, Edson
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Nonlinear Acoustic Structural Health Monitoring
47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference<BR> 14th AIAA/ASME/AHS Adaptive Structures Conference<BR> 7th, 2006Structural health monitoring (SHM) is an essential technology for maintaining the safety, high performance and operational readiness of civilian and military aircraft. Passive and active SHM methodologies incorporating fiber optic, piezoelectric, dielectric and other types of sensors have been explored for the detection of structural damage resulting ...
Andrei Zagrai +3 more
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Acoustically monitored bottom coring
Deep Sea Research (1953), 1959Abstract An adaptation of the sound pinger designed by Edgerton to position an underwater camera for bottom photography has been used to monitor bottom coring operations with a Stetson corer. It is found that the pinger portrays the whole procedure in considerable detail, including the triggering of the corer for free-fall at the bottom. Cores have
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Acoustic Monitoring of Electrochemical Deposition
IEEE Transactions on Electronics Packaging Manufacturing, 2004In the microelectronics industry, manufacturers are concerned with increasing yield and reducing costs. Monitoring of unit manufacturing processes helps alleviate errors during fabrication, thereby increasing yield and ultimately decreasing cost. This work proposes an acoustic method for in-situ monitoring of electrochemical deposition. A micromachined
F.R. Williams, G.S. May
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The Journal of the Acoustical Society of America, 1975
The speed of sound as a function of the average molecular weight in a gaseous mixture has been used to determine the concentration level of fuel vapor in air, in the range from 1.0% to 8.0% by volume. This method of measurement yields an error due to a 1°C change in temperature of only 0.18% and can be applied to many different types of fuel. The range
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The speed of sound as a function of the average molecular weight in a gaseous mixture has been used to determine the concentration level of fuel vapor in air, in the range from 1.0% to 8.0% by volume. This method of measurement yields an error due to a 1°C change in temperature of only 0.18% and can be applied to many different types of fuel. The range
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2012
Multi-point Acoustic Sensing (MAS) technology makes use of hydrophone sensors placed at discrete distances along pipelines in order to detect third party interference (TPI) and leaks. In fact, any interaction with the pipe generates pressure waves that are guided within the fluid for long distances, carrying information on the source event.
BERNASCONI, GIANCARLO +2 more
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Multi-point Acoustic Sensing (MAS) technology makes use of hydrophone sensors placed at discrete distances along pipelines in order to detect third party interference (TPI) and leaks. In fact, any interaction with the pipe generates pressure waves that are guided within the fluid for long distances, carrying information on the source event.
BERNASCONI, GIANCARLO +2 more
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Keeping Acoustic Sand Monitoring Simple
CORROSION 2011, 2011Abstract As the global demands on the oil and gas industry for increased production are met, pressure on operators has increased significantly. Therefore higher velocities, more horizontal drilling / completions, higher production, production from less consolidated zones, quicker payout for wells and facilities, more complicated fluid ...
Alistair MacKinnon +2 more
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Acoustic monitoring of frontal zone
Physics of Wave Phenomena, 2010A new method for detecting frequency shifts of acoustic field interference maxima is proposed. The method is based on the cross-correlation processing of frequency-swept signals. Perturbations of medium are modeled as variations in the frontal zone width.
V. M. Kuz’kin, S. A. Pereselkov
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ACOUSTIC EMISSION MONITORING OF KNOWN FLAWS
NDT & E International, 1992Three are the applications of Acoustic Emission Technique (AET) as a non-destructive test: application to new equipment for qualification, application to installed equipment for requalification and, the most recent one, the monitoring of known flaws. The aim of this last application is to provide informations which may help when deciding about whether ...
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