Digital Image Correlation measurements as a tool of composites deformation description

Brynk, Tomasz; Molak, Rafał M.; Janiszewska, Miroslawa; Pakieła, Zbigniew

doi:10.1016/j.commatsci.2012.04.034

Cited by 39 publications

(21 citation statements)

References 14 publications

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“…The non-uniform distribution of fibers and matrix along the specimens' length and width, commonly observed in wet lay-up procedures, can produce such a complex distribution of strains. Moreover, imperfections due to application procedure together with the non-homogenous nature of this composite material can result in the observed strain localizations and fluctuations [21]. This observation becomes clearer when comparing the strains obtained in the aluminum plate and the GFRP coupon at the same load level, see Fig.10.…”

Section: Tensile Testsmentioning

confidence: 90%

Application of digital image correlation in investigating the bond between FRP and masonry

Ghiassi

Xavier

Oliveira

et al. 2013

Composite Structures

117

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Full characterization of the bond behavior between Fiber Reinforced Polymers (FRPs) and masonry in externally bonded reinforcement (EBR) technique is crucial at the design stage or structural performance prediction. In this regard, a full-field assessment technique seems to be valuable for an adequate characterization of the bond behavior. The digital image correlation (DIC) and feature tracking techniques have been used in this study for investigating the evolution of strains and deformation during uniaxial tensile tests and shear debonding tests in FRP-masonry systems. The results show that the DIC is a valuable technique for characterization of the bond behavior and investigating its three-dimensional aspects. The DIC was also found applicable for following the matrix crack development in Steel

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Section: Tensile Testsmentioning

confidence: 90%

Application of digital image correlation in investigating the bond between FRP and masonry

Ghiassi

Xavier

Oliveira

et al. 2013

Composite Structures

117

View full text Add to dashboard Cite

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“…Three samples through the sheet thickness were obtained for each direction. Tensile tests were performed at initial strain rate of 10 −3 s −1 using a Digital Image Correlation (DIC) method for strain analysis [ 34 ]. DIC measurements were conducted on the front and side surfaces of tensile samples, which allowed to accurately calculate the Lankford parameters (r α values where α indicates an angle to the RD).…”

Section: Methodsmentioning

confidence: 99%

Microstructure, Texture and Mechanical Properties of Mg-6Sn Alloy Processed by Differential Speed Rolling

et al. 2020

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The effect of shear deformation introduced by differential speed rolling (DSR) on the microstructure, texture and mechanical properties of Mg-6Sn alloy was investigated. Mg-6Sn sheets were obtained by DSR at speed ratio between upper and lower rolls of R = 1, 1.25, 2 and 3 (R = 1 refers to symmetric rolling). The microstructural and textural changes were investigated by electron backscattered diffraction (EBSD) and XRD, while the mechanical performance was evaluated based on tensile tests and calculated Lankford parameters. DSR resulted in the pronounced grain refinement of Mg-6Sn sheets and spreading of basal texture as compared to conventionally rolled one. The average grain size and basal texture intensity gradually decreased with increasing speed ratio. The basal poles splitting to transverse direction (TD) or rolling direction (RD) was observed for all Mg-6Sn sheets. For the as-rolled sheets, YS and UTS increased with increasing speed ratio, but a significant anisotropy of strength and ductility between RD and TD has been observed. After annealing at 300 °C, Mg-6Sn sheets became more homogeneous, and the elongation to failure was increased with higher speed ratios. Moreover, the annealed Mg-6Sn sheets were characterized by a very low normal anisotropy (0.91–1.16), which is normally not achieved for the most common Mg-Al-Zn alloys.

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“…For example, Lomov et al 5 used DIC on two PWCs and a braided composite to validate their finite element model (FEM), identifying damage initiation. Brynk et al 43 employed DIC to measure the longitudinal and transverse strains of unidirectional, plain weave and twill weave carbon reinforced composite plates loaded in tension, in order to determine their elastic properties. Qin et al 44 used DIC to measure the in-plane and out-of-plane shear properties of a PWC, whereas Pollock et al 45 measured the in-plane elastic properties of a PWC under off-axis tension.…”

Section: Introductionmentioning

confidence: 99%

Measurement of in-plane and out-of-plane elastic properties of woven fabric composites using digital image correlation

López-Santos

May‐Pat

Orozco

et al. 2020

Journal of Composite Materials

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The digital image correlation (DIC) technique is employed to measure the strain fields and the five independent elastic material constants of a glass/vinyl ester plain weave laminated composite. Transverse (through-thickness) tensile and Iosipescu shear properties were measured using thick (∼19 mm) laminates, and the strain fields were compared against those predicted by a homogenized linear elastic finite element analysis. DIC reveals that the strain fields of the laminates may present heterogeneous zones, which are attributed to the heterogeneous nature of the woven fabric architecture. Homogenization of the DIC strain fields to produce two-dimensional stress-strain plots yields average strains and elastic properties of the woven composite which can be similar to those measured by conventional (localized) strain gages. Important differences were found for the transverse tensile and Iosipescu shear tests, where differences of 26.4%, 28.6% and 11.9% were obtained for the measured transverse elastic modulus ( Ez), in-plane shear modulus ( Gxy) and transverse shear modulus ( Gxz), respectively.

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Digital Image Correlation measurements as a tool of composites deformation description

Cited by 39 publications

References 14 publications

Application of digital image correlation in investigating the bond between FRP and masonry

Application of digital image correlation in investigating the bond between FRP and masonry

Microstructure, Texture and Mechanical Properties of Mg-6Sn Alloy Processed by Differential Speed Rolling

Measurement of in-plane and out-of-plane elastic properties of woven fabric composites using digital image correlation

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