Holographic interferometry for measuring residual stresses by using probing holes

Одинцев, И. Н.; Shchepinov, V. P.; Shchikanov, A. Yu.

doi:10.1134/1.1626781

Cited by 5 publications

(4 citation statements)

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“…Associated methods are strain-gauging, X-ray diffraction, ultrasonic and optical methods, etc. [1][2][3][4][5][6][7][8][12][13][14]. Note that ultrasonic stress analysis is based on the dependence of the wave velocity on elastic constants of high order.…”

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confidence: 99%

“…The advantages of holographic interferometry are that it is a noncontact procedure and that it allows determining the three components of the displacement vector from fringe patterns over the entire laser-illuminated surface of the specimen. The experimental determination of displacements by holographic interferometry to calculate residual stresses is the subject of the papers [1,[5][6][7][8]12].…”

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Displacement Determination by Holographic Interferometry for Residual Stress Analysis in Elastic Bodies

Andrushchenko

Krotenko

2005

Int Appl Mech

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A method is developed for determining the three displacement components by the method of holographic interferometry from two interferograms used to measure residual stresses by hole drilling. The displacements are determined at the intersection points of the principal axes and the hole boundary. The method is experimentally validated by measuring the stress state of a plate under uniaxial tension Keywords: displacement determination method, holographic interferometry, hole-drilling technique, residual stress, plate under uniaxial tensionIntroduction. Experimental stress-strain analysis of structural members occupies an important place in solid mechanics. Associated methods are strain-gauging, X-ray diffraction, ultrasonic and optical methods, etc. [1][2][3][4][5][6][7][8][12][13][14]. Note that ultrasonic stress analysis is based on the dependence of the wave velocity on elastic constants of high order. Guz [3] has derived analytic relations between unknown residual stresses and the velocity of elastic waves within the framework of linearized solid mechanics.The importance and expediency of solving problems of linearized solid mechanics for various design models were pointed out in [9]. Exact solutions to mixed plane problems of solid mechanics in the cases of statics, dynamics, stability, and fracture were analyzed in [10].Residual stresses in modern metal structures are induced by various processes such as welding, soldering, casting, and forming. Quantitative assessment of residual stresses is important for predicting the load-bearing capacity and life of structures. In this connection, the development of efficient experimental techniques for determination of residual stresses is of practical interest.Of the well-known residual-stress measurement techniques, hole-drilling strain gauge method [4] has become the most popular. The idea of the method is to remove a small amount of metal by drilling a hole in a specimen with residual stresses. The relieved surface strains can then be measured with a special strain gauge rosette.Holographic interferometry has opened up new opportunities for further perfection the hole-drilling method. The advantages of holographic interferometry are that it is a noncontact procedure and that it allows determining the three components of the displacement vector from fringe patterns over the entire laser-illuminated surface of the specimen. The experimental determination of displacements by holographic interferometry to calculate residual stresses is the subject of the papers [1,[5][6][7][8]12].To determine residual stresses, we need to establish the displacement-stress relationship. One of the ways to do this is to use the Kirsch solution [11] for an infinite plate with a circular hole. The paper [5] was the first to combine the hole-drilling method and holographic interferometry. For blind holes, the authors of [12] proposed to determine the coefficients of the relationship between the displacement components and the surface stresses from a finite-element model of the three-dimensio...

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Displacement Determination by Holographic Interferometry for Residual Stress Analysis in Elastic Bodies

Andrushchenko

Krotenko

2005

Int Appl Mech

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“…Remarkable properties of reflection hologram interferometry with respect to residual stresses determination in thin-walled plane structures by through hole drilling have been previously established and comprehensively demonstrated [16][17][18][19]. Among them the unique capability of recognizing principal stress directions at the stage of fringe patterns reconstruction is of great importance.…”

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confidence: 99%

“…The paper is devoted to the determination of both membrane and bending residual stress components near FSW joints of plates by the general approach. This technique is based on the combined use of the hole drilling method and reflection hologram interferometry [16][17][18][19].…”

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confidence: 99%

Residual Stresses Determination near FSW Joints by Combining the Hole Drilling Method and Reflection Hologram Interferometry

Чернов

Одинцев

Писарев

2021

MSF

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The results of residual stress characterization near friction stir welded (FSW) butt joint of aluminum plates are reported. The experimental analysis employs two-side measurements of local deformation response on small hole drilling by reflection hologram interferometry. The approach developed is based on the unequivocally solution of the properly posed inverse problem thus deriving both membrane and bending residual stress components. Residual stress components of high level are derived inside the tool shoulder borders on both specimen faces.

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Estimation of Range of Reliable Measurements of Residual Stresses by Hole Drilling Method

2017

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Holographic interferometry for measuring residual stresses by using probing holes

Cited by 5 publications

References 2 publications

Displacement Determination by Holographic Interferometry for Residual Stress Analysis in Elastic Bodies

Displacement Determination by Holographic Interferometry for Residual Stress Analysis in Elastic Bodies

Residual Stresses Determination near FSW Joints by Combining the Hole Drilling Method and Reflection Hologram Interferometry

Estimation of Range of Reliable Measurements of Residual Stresses by Hole Drilling Method

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