Singularities in using Vic-3D™ Digital Image Correlation software and its application to the study of inelastic strain fields

Tretyakova, T. V.

doi:10.7242/1999-6691/2014.7.2.17

Cited by 7 publications

(4 citation statements)

References 14 publications

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“…Various measurement methods are used to analyze the Portevin -Le Chatelier effect. Of great importance are optical methods and non-destructive testing tools that allow non-contact recording of spatial heterogeneity of plastic yielding at the mesolevel, for example, the method of digital image correlation (DIC) [1][2][3][4][5][6][7]; digital speckle interferometry [2,8,9,10], which allows to record localized deformation areas "in situ"; digital infrared thermography [8,11,12]. Among research methods on a microscale, one of the most common is electron microscopy [13][14][15][16][17], which allows to observe and analyze the structure of materials at the micro level.…”

Section: Brief Literature Reviewmentioning

confidence: 99%

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Using the wavelet transform to process data from experimental studies of the discontinuous plastic deformation effect

Chechulina,

Trusov,

Gerasimov

et al. 2024

Frattura Ed Integrità Strutturale

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Vast number of theoretical and experimental works has been devoted to the study of discontinuous plastic deformation (the Portevin-Le Chatelier effect), which manifests itself for most widely used alloys in certain ranges of both temperatures and strain rates. Due to the statistical nature of this phenomenon, difficulties arise in processing, qualitative analysis and quantitative comparison of test results and calculations. Using of statistical methods for these purposes makes it possible to get only some averaged characteristics of the obtained data (usually - moments of the first and second orders in amplitudes and frequencies). A possible alternative for processing of experimental and theoretical results of this effect research is wavelet analysis using. The results of experimental studies of the Portevin–Le Chatelier effect, realized during the deformation of thin-walled tubular specimens made of aluminum alloy AMg6M at certain strain rates at room temperature are presented. Diagrams of deformation under uniaxial tension, shear, proportional and disproportionate loading of specimens were obtained. The inhomogeneity of strain fields and their rates is shown, illustrating the manifestation of the Portevin – Le Chatelier effect under conditions of complex loading of thin-walled tubular specimens made of AMg6M alloy. A brief overview of existing methods and means of non-destructive testing is presented that make it possible to non-contactly record the spatial heterogeneity of plastic yielding. Some possibilities of using the wavelet transform to process certain types of non-monotonic stress-strain diagrams obtained for the specimens made of the aluminum alloy in question are discussed. Using wavelet analysis, a compact presentation of data from field experiments in the form of amplitude-frequency characteristics was obtained. The scalograms analysis of specimen loading diagrams was carried out.

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Section: Brief Literature Reviewmentioning

confidence: 99%

“…Figs. [3][4][5][6][7][8][9][10][11][12] show the resulting diagrams (curves). Part of the data on specimens loading (during tensile and torsion tests) was presented in [44].…”

mentioning

confidence: 99%

Using the wavelet transform to process data from experimental studies of the discontinuous plastic deformation effect

Chechulina,

Trusov,

Gerasimov

et al. 2024

Frattura Ed Integrità Strutturale

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“…The choice of correlation processing parameters is described in the works of Tretyakova T.V. [44], Strungar E.M. [39,45], and Sutton M.A. [46].…”

Section: Introductionmentioning

confidence: 99%

The Analysis of Stress Raisers Affecting the GFRP Strength at Quasi-Static and Cyclic Loads by the Theory of Critical Distances, Digital Image Correlation, and Acoustic Emission

et al. 2023

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The purpose of this work is to analyze the stress-raisers that affect the tensile strength and fatigue resistance of GFRP parts using the point and line methods of the theory of critical distances (TCD) to obtain a quantitative measure of the defect size that can be tolerated by the composite before it fails. In the course of the work, a method combining TCD and the Weibull function was developed. In the course of the work, GFRP structural fiberglass for electrical purposes was tested under uniaxial quasi-static and cyclic loading with digital image correlation (DIC) and acoustic emission (AE), as well as a numerical simulation of deformation. The studied specimens were plain (without a stress-raiser) and notched (V-shaped) with different notch root radii and depths. The results were used to determine the material critical distances. In this case, two approaches to TCD were used: line (LM) and point (PM) methods. To analyze the experimental results, finite element modeling was applied using the ANSYS software package. As a result, the linearized maximum principal stresses were obtained on the central line passing through the top of the stress raiser. Thus, the values of the critical distances of the material were determined by PM and LM. Based on the data obtained, the sizes of permissible defects in the studied fiberglass were established that do not affect the tensile and fatigue strength of the material. The paper illustrates the cumulative energy, peak amplitudes, and distributions of the frequency of the spectral maximum of acoustic emission signals obtained after the destruction of specimens by fatigue test. Evolutions of deformation fields on the specimen surface were recorded using a Vic-3D contactless optical video system and the DIC.

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“…Structural studies should be used to solve this problem at different structural levels [2]. To do this, it is necessary to carry out a study of deformation fields on the surface of samples at macro-and meso-levels in the process of plastic deformation [3][4][5][6][7][8]. These studies provide important and relevant information for prediction of destruction conditions of deformable bodies and for developing technical solutions to improve the bearing capacity and the survivability of structures [1].…”

Section: Introductionmentioning

confidence: 99%

Study of peculiarities of changes in stress fields of the muff coupling surface of reinforcing bars at its manufacturing

Kopaniza¹,

Ustinov²,

Попова³

et al. 2017

AIP Conference Proceedings

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Singularities in using Vic-3D™ Digital Image Correlation software and its application to the study of inelastic strain fields

Cited by 7 publications

References 14 publications

Using the wavelet transform to process data from experimental studies of the discontinuous plastic deformation effect

Using the wavelet transform to process data from experimental studies of the discontinuous plastic deformation effect

The Analysis of Stress Raisers Affecting the GFRP Strength at Quasi-Static and Cyclic Loads by the Theory of Critical Distances, Digital Image Correlation, and Acoustic Emission

Study of peculiarities of changes in stress fields of the muff coupling surface of reinforcing bars at its manufacturing

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