Results 1 to 10 of about 11,614 (198)

Three-Dimensional Continuous Displacement Measurement with Temporal Speckle Pattern Interferometry [PDF]

open access: yesSensors, 2016
A speckle interferometer which can measure whole field three-dimensional displacements continuously and dynamically has been built. Three different wavelength lasers are used to produce the speckle interferograms of the two in-plane displacements ...
Jie Qin, Zhan Gao, Xu Wang, Shanwei Yang
doaj   +2 more sources

A Targetless Method for Simultaneously Measuring Three-Degree-of-Freedom Angular Motion Errors with Digital Speckle Pattern Interferometry [PDF]

open access: yesSensors, 2023
As a guide rail is the basic motion unit of precision equipment, the measurement of and compensation for its motion errors are important preconditions for precision machining and manufacturing.
Lili Shi, Sijin Wu, Miao Yan, Haisha Niu
doaj   +2 more sources

A Strain Distribution Sensing System for Bone-Implant Interfaces Based on Digital Speckle Pattern Interferometry [PDF]

open access: yesSensors, 2019
This paper aims to provide an effective measurement method for the distribution of deformations and strains focusing on the response to external loading of bone-implant interfaces.
Ping Zhong   +4 more
doaj   +2 more sources

Remarks on Residual Stress Measurement by Hole-Drilling and Electronic Speckle Pattern Interferometry [PDF]

open access: yesThe Scientific World Journal, 2014
Hole drilling is the most widespread method for measuring residual stress. It is based on the principle that drilling a hole in the material causes a local stress relaxation; the initial residual stress can be calculated by measuring strain in ...
Claudia Barile   +3 more
doaj   +2 more sources

Development of a Compound Speckle Interferometer for Precision Three-Degree-of-Freedom Displacement Measurement

open access: yesSensors, 2021
In this study, a compound speckle interferometer for measuring three-degree-of-freedom (3-DOF) displacement is proposed. The system, which combines heterodyne interferometry, speckle interferometry and beam splitting techniques, can perform precision 3 ...
Hung-Lin Hsieh, Bo-Yen Sun
doaj   +1 more source

The behavior of standing waves near the end of an open pipe with low mean flow [PDF]

open access: yesJASA Express Letters, 2023
The acoustic standing wave near the end of an open pipe is investigated using spectrally analyzed high-speed transmission electronic speckle pattern interferometry.
Thomas R. Moore   +2 more
doaj   +1 more source

Defect Isolation from Whole to Local Field Separation in Complex Interferometry Fringe Patterns through Development of Weighted Least-Squares Algorithm

open access: yesDigital, 2023
In this paper, based on Gaussian 1σ-criterion and histogram segmentation, a weighted least-squares algorithm is applied and validated on digital holographic speckle pattern interferometric data to perform phase separation on the complex interference ...
Zhenkai Chen   +4 more
doaj   +1 more source

Tracking transients in steelpan strikes using surveillance technology [PDF]

open access: yesJASA Express Letters, 2022
This paper presents advancements in tracking features in high-speed videos of Caribbean steelpans illuminated by electronic speckle pattern interferometry, made possible by incorporating robust computer vision libraries for object detection and image ...
Scott H. Hawley   +2 more
doaj   +1 more source

Experimental determination of vibration characteristics of turbine blades with an immunity digital speckl interferometer

open access: yesАвіаційно-космічна техніка та технологія, 2021
The paper notes the wide possibilities and high efficiency of vibration diagnostics of parts and assemblies of power units by the method of electronic speckle interferometry (ESI), shows the feasibility of developing and improving methods for obtaining ...
Михаил Романович Ткач   +5 more
doaj   +1 more source

Surface Displacement Measurements of Artworks: New Data Processing for Speckle Pattern Interferometry

open access: yesApplied Sciences, 2022
Curators have developed preventive conservation strategies and usually try to control the temperature (T) and relative humidity (RH) variations in the museum rooms to stabilise the artworks.
Jessica Auber--Le Saux   +5 more
doaj   +1 more source

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