Full-field strain measurements at the micro-scale in fiber-reinforced composites using digital image correlation

Mehdikhani, Mahoor; Aravand, Mohammadali; Sabuncuoğlu, Barış; Callens, Michaël; Lomov, Stepan Vladimirovitch; Gorbatikh, Larissa

doi:10.1016/j.compstruct.2015.12.020

Cited by 132 publications

(54 citation statements)

References 30 publications

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“…The potential of mDIC to analyze deformations in composite materials at the micro-scale was assessed in Refs. [12,13]. High-resolution and low-error micro-scale strain maps could be obtained, thus further supporting the use of this technique in composites.…”

Section: Introductionsupporting

confidence: 60%

Strain mapping at the micro-scale in hierarchical polymer composites with aligned carbon nanotube grafted fibers

Mehdikhani

Matveeva

Aravand

et al. 2016

Composites Science and Technology

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Section: Introductionsupporting

confidence: 60%

Strain mapping at the micro-scale in hierarchical polymer composites with aligned carbon nanotube grafted fibers

Mehdikhani

Matveeva

Aravand

et al. 2016

Composites Science and Technology

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“…In [31], Mehdikhani et al [33], the micro-DIC was applied to capture microscopic stress concentrations between the fibers. A reasonable agreement was found between the DIC-measured and FE-predicted strain fields.…”

Section: Modelling Results and Experimentally Observed Phenomenamentioning

confidence: 99%

Stress magnification due to carbon nanotube agglomeration in composites

Romanov

Lomov

Verpoest

et al. 2015

Composite Structures

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“…Shape function is a function used to describe the corresponding change relationship of pixel coordinates. In general, the first-order shape function is the most commonly used [11], and the expression is as follows:…”

Section: Digital Image Correlation Methodsmentioning

confidence: 99%

“…Vector x, y represents both direction and size in the x and y directions respectively. Therefore, the change in the angle of the optical window on the pixel is (11) γ arctan y + σ…”

Section: Refraction Error Modelmentioning

confidence: 99%

Research on refraction error correction of digital image correlation technology in strain measurement of airship skin

Zhao

Wang

Zhou

et al. 2020

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Digital image correlation method is a widely used non-contact deformation measurement method. However, in low temperature environment the airships stay in, the camera needs to be protected by thermal insulation device, the optical glass of which introduces the refraction error to photogrammetry technology. To solve the influence of refraction error on the deformation measurement accuracy of digital image correlation method, the displacement deviation caused by refraction is theoretically deduced to obtain the deviation model based on the analysis of refraction light path and digital image correlation method. Moreover, the corresponding refraction error correction based on deformation function is proposed. Through the contrast experiment, it is found that the refraction offset error model is consistent with the actual displacement deviation. The digital image correlation method based on the refraction error correction proposed in this paper can effectively depress the refraction effect of glass, reduce the measurement error and improve the deformation measurement accuracy.

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Full-field strain measurements at the micro-scale in fiber-reinforced composites using digital image correlation

Cited by 132 publications

References 30 publications

Strain mapping at the micro-scale in hierarchical polymer composites with aligned carbon nanotube grafted fibers

Strain mapping at the micro-scale in hierarchical polymer composites with aligned carbon nanotube grafted fibers

Stress magnification due to carbon nanotube agglomeration in composites

Research on refraction error correction of digital image correlation technology in strain measurement of airship skin

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