Pyramidal adaptive meshing for Digital Image Correlation dealing with cracks

Sciuti, Vinicius Fiocco; Vargas, Rafael; Canto, Rodrigo Bresciani; Hild, François

doi:10.1016/j.engfracmech.2021.107931

Cited by 12 publications

(4 citation statements)

References 59 publications

(99 reference statements)

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“…Such a DVC approach is referred to as regularized DVC with damage (i.e., RD-DVC). To achieve element-based damage quantifications [40], mesh refinement was performed in the damaged regions, and a master-slave algorithm was used to deal with hanging nodes [41] as non-conforming meshes were constructed. Such a scheme is called regularized multi-mesh damaged DVC (i.e., RMD-DVC) and was based on the following five steps (Fig.…”

Section: Parameter Expression Uniaxial Triaxialmentioning

confidence: 99%

Damage Evolution in Coal Under Different Loading Modes Using Advanced Digital Volume Correlation Based on X-Ray Computed Tomography

Liu¹,

Mao²,

Ju³

et al. 2023

Preprint

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Section: Parameter Expression Uniaxial Triaxialmentioning

confidence: 99%

Damage Evolution in Coal Under Different Loading Modes Using Advanced Digital Volume Correlation Based on X-Ray Computed Tomography

Liu¹,

Mao²,

Ju³

et al. 2023

Preprint

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“…The method is reported to be robust enough to deal with materials with not perfectly straight crack paths (due to the loading conditions and/or the microstructure) and blunted crack fronts. Alternatively, Sciuti et al 78 use an adaptive meshing technique to better capture displacements near discontinuities, such as cracks, and thereby the ability to more accurately locate the crack tip.…”

Section: Full‐field Fracture Mechanicsmentioning

confidence: 99%

Extracting fracture properties from digital image and volume correlation displacement data: A review

Becker

2023

Strain

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The advent of digital image and volume correlation has attracted wide use in fracture mechanics. The full‐field nature of digital image and volume correlation allows for the integration of computational fracture mechanics to analyse cracked samples quantitatively. This review provides a comprehensive overview of current methods used to extract fracture properties from full‐field displacement data. The term full‐field fracture mechanics is introduced to highlight the uniqueness of using inherently noisy experiential data to extract fracture properties. The review focuses on post‐processing‐based approaches rather than integrated approaches, as these have less limitations and are more commonly employed. There are four approaches that are discussed in extracting fracture properties from experimentally computed displacement data: field‐fitting, integral, crack‐opening and cohesive zone modelling approaches. This is further developed to discuss problems associated with using digital image and volume correlation to extract properties, including application examples.

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“…DIC applied in the context of masonry provides valuable insights by evaluating full-field strain distributions, localizing failure zones, and identifying different deformation mechanisms. In fact, it is widely adopted to assess crack development and propagation and further help in optimizing reinforcement strategies for enhancing the performance and safety of masonry structures [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

DIC technique for experimental validation of higher order numerical models

Priya Thatikonda,

Baraldi,

Boscato

et al. 2024

J. Phys.: Conf. Ser.

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This paper presents an adaptation to the Digital Image Correlation (DIC) technique to aid and improve standard measurement methods in experimental mechanics. The practical application is demonstrated by the validation of the Cosserat Continuum model, using small-scale masonry specimens. Numerical models, such as the Cosserat continuum, play an important role in the identification and description of the mechanical behaviour of structures. Especially when it comes to anisotropic and quasi-brittle materials like masonry, these models are needed to evaluate significant aspects like performance, safety, or the effects of various strengthening interventions. The experimental investigation to validate a numerical model is not always straightforward and several of them remain theoretical. Addressing this, the experimentation presented in this paper evaluates the Cosserat identification in shear, where along with simple shear deformation, rigid rotations, micro rotations and micro couples are also exhibited. With such complex deformations, conventional techniques, such as strain gauges, or extensometers can no longer be adopted. The adapted DIC allows the quantification of these deformation data and validates the numerical model.

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Pyramidal adaptive meshing for Digital Image Correlation dealing with cracks

Cited by 12 publications

References 59 publications

Damage Evolution in Coal Under Different Loading Modes Using Advanced Digital Volume Correlation Based on X-Ray Computed Tomography

Damage Evolution in Coal Under Different Loading Modes Using Advanced Digital Volume Correlation Based on X-Ray Computed Tomography

Extracting fracture properties from digital image and volume correlation displacement data: A review

DIC technique for experimental validation of higher order numerical models

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