Results 51 to 60 of about 269,417 (292)

Damage quantification techniques in acoustic emission monitoring [PDF]

open access: yes, 2011
Acoustic emission (AE) analysis is one of the several diagnostic techniques available nowadays for structural health monitoring (SHM) of engineering structures.
Chan, Tommy H.T.   +3 more
core   +1 more source

Use of spectral kurtosis for improving signal to noise ratio of acoustic emission signal from defective bearings [PDF]

open access: yes, 2014
The use of Acoustic Emission (AE) to monitor the condition of roller bearings in rotating machinery is growing in popularity. This investigation is centred on the application of Spectral Kurtosis (SK) as a denoising tool able to enhance the bearing ...
Cao, Yi   +3 more
core   +1 more source

Covalent Organic Frameworks for Photocatalytic CO2 Reduction: Metal Integration Principles, Strategies and Functions

open access: yesAdvanced Functional Materials, EarlyView.
Covalent organic frameworks (COFs) with metals have been recognized as versatile platforms for photocatalytic CO2 reduction (CO2PRR). Herein, an overview of metal integration strategies for COFs is systematically summarized. Regulatory mechanisms and structure–activity relationships between metal integration and COF‐based CO2PRR are emphasized.
Jie He   +5 more
wiley   +1 more source

Embedded very-low-frequency underwater acoustic acquisition technology and experimental study for underwater explosion monitoring

open access: yesFrontiers in Sensors
Very-low-frequency (VLF) underwater acoustic monitoring is a primary means for monitoring specialized underwater explosions. In view of the limited availability of dedicated off-the-shelf VLF underwater acoustic monitoring equipment and related ...
Xuexu Li   +8 more
doaj   +1 more source

Co-detection of acoustic emissions during failure of heterogeneous media: new perspectives for natural hazard early warning [PDF]

open access: yes, 2015
A promising method for real time early warning of gravity driven rupture that considers both the heterogeneity of natural media and characteristics of acoustic emissions attenuation is proposed.
Dani Or   +3 more
core   +1 more source

From Wafers to Electrodes: Transferring Automatic Optical Inspection (AOI) for Multiscale Characterization of Smart Battery Manufacturing

open access: yesAdvanced Functional Materials, EarlyView.
Automat optical inspection (AOI) techniques in semiconductor fabrication can be leveraged in battery manufacturing, enabling scalable detection and analysis of electrode‐ and cell‐level imperfections through AI‐driven analytics and a digital‐twin framework.
Jianyu Li, Ertao Hu, Wei Wei, Feifei Shi
wiley   +1 more source

Next‐generation ultrasonic recorders facilitate effective bat activity and distribution monitoring by citizen scientists

open access: yesEcosphere, 2021
Time and budgetary resources are often a limiting factor in the collection of large‐scale ecological data. If data collected by citizen scientists were comparable to data collected by researchers, it would allow for more efficient data collection over a ...
Piia Lundberg   +6 more
doaj   +1 more source

Monitoring the sea environment using acoustics the role of the acoustical observatories [PDF]

open access: yes, 2013
The presentation deals with theoretical factors and technical specifications pertinent to the design of an acoustical observatory for the monitoring of the marine environment. Two types of observatories are mentioned, namely active and passive. Among the
Taroudakis, Michael
core  

Neutrino Detection, Position Calibration and Marine Science with Acoustic Arrays in the Deep Sea

open access: yes, 2013
Arrays of acoustic receivers are an integral part of present and potential future Cherenkov neutrino telescopes in the deep sea. They measure the positions of individual detector elements which vary with time as an effect of undersea currents.
Lahmann, Robert
core   +1 more source

Acoustic measurement of lubricant-film thickness distribution in ball bearings [PDF]

open access: yes, 2006
An oil-film thickness monitoring system capable of providing an early warning of lubrication failure in rolling element bearings has been developed. The system is used to measure the lubricant-film thickness in a conventional deep groove ball bearing ...
Bruce W. Drinkwater   +7 more
core   +1 more source

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