Displacement Measurement from Double-exposure Laser Photographs

Archbold, E.; Ennos, A. E.

doi:10.1080/713818559

Cited by 285 publications

(35 citation statements)

References 6 publications

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“…This scheme is close, in principle, to schemes used for the analysis of deformations of transparent objects, where the initial and inclined (with respect to the axis lying in the plane of an object) states of an object are recorded [13,14]. The spectrum of spatial frequencies is formed by optical system OS1.…”

Section: Aoz~k = Al Dnk(~k) D~kmentioning

confidence: 99%

Application of speckle interferometry to the analysis of refractive-index gradients in flows

et al. 1999

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A version of a scheme of speckle intefferometry is considered, which is intended for the analysis of the distribution of refractive-index gradients in optically transparent media. The application of this approach to problems of hydrodynamics and gas dynamics makes it possible to determine the structure of the distribution of optical inhomogeneities in liquid and gaseous flows. The method is based on the recording of patterns of two speckle structures obtained in the plane of spatial frequencies by using illumination with an auxiliary speckle structure. One speckle structure is formed in the absence of an object, and the other one is formed by transilluminating an object. In comparison with other known phase methods, the speckle-interferometry methods make it possible to change the measurement sensitivity in a wide range and substantially simplify the interpretation of the results obtained.

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Section: Aoz~k = Al Dnk(~k) D~kmentioning

confidence: 99%

Application of speckle interferometry to the analysis of refractive-index gradients in flows

et al. 1999

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“…The technique has its genesis in a paper by Burch and Tokarski in 1968 [10]. However, major developments of the technique occurred in the 1970s by several investigators [11][12][13][14][15][16][17]. In the beginning laser speckles, which is the natural result of multiple interference of scattered coherent laser light, are used.…”

Section: The Technique Of Speckle Photographymentioning

confidence: 99%

Development of interior strain measurement techniques using random speckle patterns

Chiang

Mao

2014

Meccanica

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Experimental stress analysis is a well established mechanics discipline dealing with measuring stress/strain in solids under load. Most techniques can only be applied to measuring strain of the surface. In this paper we review the development of techniques of using a random speckle patterns as a quantitative tool to mapping interior strain field of solids. After some elementary treatment of the basic principles of the speckle photography technique we describe three approaches that can probe the interior strain field of a transparent object. They are followed by a newly developed 3D strain measurement technique called digital volumetric speckle photography which can probe the interior of opaque materials as well.

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“…Thus, phase information is lost but the method is very simple and easy to use. Traditionally, this technique has been applied to measure the in-plane displacements in solids (Archbold & Ennos, 1972), deformations (Fricke-Begemann, 2003) and roughness (Yamaguchi et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Application of Optical Techniques in the Characterization of Thermal Stability and Environmental Degradation in High Temperature Superconductors

Angurel¹,

Andrés²,

Pilar³

et al. 2010

Superconductor

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Displacement Measurement from Double-exposure Laser Photographs

Cited by 285 publications

References 6 publications

Application of speckle interferometry to the analysis of refractive-index gradients in flows

Application of speckle interferometry to the analysis of refractive-index gradients in flows

Development of interior strain measurement techniques using random speckle patterns

Application of Optical Techniques in the Characterization of Thermal Stability and Environmental Degradation in High Temperature Superconductors

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