Results 21 to 30 of about 252,611 (302)

Particle image velocimetry technique and ultrasound method to obtain the modulus of elasticity of Bertholletia excelsa wood

open access: yesMaderas: Ciencia y Tecnología, 2021
Non-destructive techniques for characterizing materials in-service have been increasing in importance. Thus, it is relevant to assess the potential of non-destructive techniques for solid materials. This work aimed to determine the modulus of elasticity
Eduardo Hélio de Novais Miranda   +5 more
doaj   +1 more source

EVALUATION OF AIRBORNE IMAGE VELOCIMETRY APPROACHES USING LOW-COST UAVS IN RIVERINE ENVIRONMENTS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Traditional flow velocity measurements in natural environments require contact with the fluid and are usually costly, time-consuming and, sometimes, even dangerous.
F. Ioli   +4 more
doaj   +1 more source

Particle Image Velocimetry for MATLAB: Accuracy and enhanced algorithms in PIVlab

open access: yesJournal of Open Research Software, 2021
PIVlab is a free toolbox and app for MATLAB ® . It is used to perform Particle Image Velocimetry (PIV) with image data: A light sheet illuminates particles that are suspended in a fluid.
W. Thielicke, René Sonntag
semanticscholar   +1 more source

Echo Particle Image Velocimetry [PDF]

open access: yesJournal of Visualized Experiments, 2012
The transport of mass, momentum, and energy in fluid flows is ultimately determined by spatiotemporal distributions of the fluid velocity field.(1) Consequently, a prerequisite for understanding, predicting, and controlling fluid flows is the capability to measure the velocity field with adequate spatial and temporal resolution.(2) For velocity ...
Nicholas, DeMarchi, Christopher, White
openaire   +2 more sources

Particle Imaging Velocimetry Gyroscope [PDF]

open access: yesSensors, 2019
Inertial measurement units (IMUs) are typically classified as per the performance of the gyroscopes within each system. Consequently, it is critical for a system to have a low bias instability to have better performance. Nonetheless, there is no IMU available commercially that does not actually suffer from bias-instability, even for the navigation ...
Ahmed A. Youssef, Naser El-Sheimy
openaire   +3 more sources

Considerations When Applying Large-Scale PIV and PTV for Determining River Flow Velocity

open access: yesFrontiers in Water, 2021
Large-scale image velocimetry is a novel approach for non-contact remote sensing of flow in rivers. Research within this topic has largely focussed on developing specific aspects of the image velocimetry work-flow, or alternatively, testing specific ...
Martin J. Jolley   +3 more
doaj   +1 more source

An Evaluation of Image Velocimetry Techniques under Low Flow Conditions and High Seeding Densities Using Unmanned Aerial Systems

open access: yesRemote Sensing, 2020
Image velocimetry has proven to be a promising technique for monitoring river flows using remotely operated platforms such as Unmanned Aerial Systems (UAS).
Sophie Pearce   +13 more
doaj   +1 more source

Surface image velocimetry: Aerial tracer particle distribution system and techniques for reducing environmental noise with coloured tracer particles

open access: yesRivers Research and Applications: an international journal devoted to river research and management, 2022
A novel aerial tracer particle distribution system has been developed. This system is mounted on an unmanned aerial vehicle (UAV) and flown upstream from where surface velocimetry measurements are conducted.
H. Biggs   +3 more
semanticscholar   +1 more source

Experimental flows through an array of emerged or slightly submerged square cylinders over a rough bed

open access: yesScientific Data, 2021
Measurement(s) velocity • depth of water Technology Type(s) particle-image velocimetry • ultrasonic velocimetry • ultrasonic transit time probe Factor Type(s) square cylinder immersion rate Machine-accessible metadata file describing the reported data ...
Marina Oukacine   +3 more
doaj   +1 more source

Investigation of heat treatment process using Particle Image Velocimetry [PDF]

open access: yesMATEC Web of Conferences, 2022
Martensitic hardening is a technology widely used in mechanical engineering practice to increase the hardness and abrasion resistance of ferrous alloys. To achieve martensitic hardening, the workpiece must be cooled the workpiece very quickly, which can ...
Koós Dániel   +2 more
doaj   +1 more source

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