Whole-field measurement of three-dimensional stress by scattered-light photoelasticity with unpolarized light

Kihara, Toshiki

doi:10.1051/epjconf/20100632006

Cited by 3 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the genesis of experimental mechanics field, one of the major goals has always been to develop a true 3D experimental stress/strain analysis technique whereby one can probe into solids for detecting the interior deformation with ease. The invention of techniques such as frozen stress photoelasticity [8,9], scattered light photoelasticity [10,11], integrated photoelasticity and photoelastic tomography [12][13][14], etc. were major developments in this field.…”

Section: Introductionmentioning

confidence: 99%

3D Strain Mapping of Opaque Materials Using an Improved Digital Volumetric Speckle Photography Technique with X-Ray Microtomography

et al. 2019

View full text Add to dashboard Cite

Digital volumetric speckle photography (DVSP) method has been used to strain investigation in opaque materials. In this paper, an improved DVSP algorithm is introduced, in which a multi-scale coarse–fine subset calculation process and a subvoxel shifting technique are applied to increase accuracy. We refer to the new algorithm as Multi-scale and Subvoxel shifting Digital Volumetric Speckle Photography (MS-DVSP). The displacement and strain fields of a red sandstone cylinder exposed to uniaxial compression and a woven composite beam under three-point bending are mapped in detail. The characteristics of the interior deformation of the specimens are clearly depicted, thus elucidating the failure mechanism of the materials.

show abstract

Section: Introductionmentioning

confidence: 99%

3D Strain Mapping of Opaque Materials Using an Improved Digital Volumetric Speckle Photography Technique with X-Ray Microtomography

et al. 2019

View full text Add to dashboard Cite

show abstract

“…For three dimensional problems, one needs a method that can measure interior strain of a solid under load. For this a series of photoelastic techniques have been developed [1,2,[4][5][6][7][8][9]. The most widely used 3D method is arguably frozen stress photoelasticity whereby a 3D model with stress ''frozen'' can be sliced into small cubes to reveal the 3D state of stress at any interior point.…”

Section: Introductionmentioning

confidence: 99%

Development of interior strain measurement techniques using random speckle patterns

Chiang

Mao

2014

Meccanica

View full text Add to dashboard Cite

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.

show abstract

“…Early developments see the invention of techniques such as frozen stress photoelasticity (Burguete and Patterson 1997), scattered light photoelasticity (Dupre and Lagarde 1997;Kihara 2010). Later integrated photoelasticity and photoelastic tomography techniques became available (Tomlison and Patterson 2002;Wijerathne et al 2008;Aben and Errapart 2012).…”

Section: Introductionmentioning

confidence: 99%

Interior Strain Analysis of Red Stone Rock under Compression Using Digital Volumetric Speckle Photography

Mao

Yuan²,

Lian³

et al. 2014

Rock Mechanics and Its Applications in Civil, Mining, and Petroleum Engineering

View full text Add to dashboard Cite

Most stress/strain analysis problems are three-dimensional (3D) in nature. Yet there is scarcely any practical experimental technique that can be employed to tackle the problem with accuracy. The earliest attempts see the development of frozen stress photoelasticity and scattered light photoelasticity. But the need to use a transparent birefringent material to model the real problem severely restricts their applicability. And the complicated procedures render these techniques evenless attractive. Recently, we (Mao and Chiang) developed a 3D stress/strain analysis technique which has the potential to revolutionize the field. We take advantage of true 3D imaging technique such as CT (Computer Tomography) and MRI (Magnetic Resonance Imaging) to record a volumetric image of an object. We extended the 2D digital speckle photography technique developed by Chiang et al. to 3D such that it can be applied to stress/strain analysis of any non-transparent materials. This paper presents the first application of this technique to analyzing the deformation of red sandstone rocks.

show abstract

Whole-field measurement of three-dimensional stress by scattered-light photoelasticity with unpolarized light

Cited by 3 publications

References 23 publications

3D Strain Mapping of Opaque Materials Using an Improved Digital Volumetric Speckle Photography Technique with X-Ray Microtomography

3D Strain Mapping of Opaque Materials Using an Improved Digital Volumetric Speckle Photography Technique with X-Ray Microtomography

Development of interior strain measurement techniques using random speckle patterns

Interior Strain Analysis of Red Stone Rock under Compression Using Digital Volumetric Speckle Photography

Contact Info

Product

Resources

About