2020
DOI: 10.1016/j.measurement.2020.107605
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High accuracy measurement of heterogeneous deformation field using spatial-temporal subset digital image correlation

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Cited by 14 publications
(4 citation statements)
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“…DIC has the advantages of being a noncontact and full-field measurement method [36]. However, the trade-offs between the subset size, shape function, and spatial resolution mean that the traditional subsetbased DIC algorithm cannot measure the strongly heterogeneous deformation field of rock deformation localization with sufficient accuracy [37][38][39][40]. In addition, the AE technique has been combined with DIC in rock mechanics experiments [41][42][43][44][45][46][47], but previous studies did not present a detailed analysis on the relationship between the deformation field evolution characteristics and the AE parameters.…”
Section: Introductionmentioning
confidence: 99%
“…DIC has the advantages of being a noncontact and full-field measurement method [36]. However, the trade-offs between the subset size, shape function, and spatial resolution mean that the traditional subsetbased DIC algorithm cannot measure the strongly heterogeneous deformation field of rock deformation localization with sufficient accuracy [37][38][39][40]. In addition, the AE technique has been combined with DIC in rock mechanics experiments [41][42][43][44][45][46][47], but previous studies did not present a detailed analysis on the relationship between the deformation field evolution characteristics and the AE parameters.…”
Section: Introductionmentioning
confidence: 99%
“…In the boundary region or stress concentration region, using a larger subset will cause blurred retrieved displacement and strain fields [22]. On the contrary, opting for a smaller subset size will cause a reduced spatial resolution and a lack of information around the boundary [23]. Consequently, for complex-shaped specimens and structures, it is necessary to develop an efficiently automatic ROI recognition and parameters selection method for an accurate and efficient deformation characterization by DIC.…”
Section: Introductionmentioning
confidence: 99%
“…A new approach, i.e., temporal subset digital image correlation technique, improving the measurement resolution in the case of small-sized facets was proposed by Wang et al [22]. Their research was further developed by Xing et al [23], thus establishing a methodology suitable for analysing heterogeneous strain fields using DIC. From the mechanics of material point of view, there is a requirement to investigate the strains/stresses as near to the stress concentrators as possible.…”
Section: Introductionmentioning
confidence: 99%