Full-field modal identification using reliability-guided frequency-domain-based digital image correlation method based on multi-camera system

Zhu, Rui; Jiang, Dong; Huang, Zhixiang; Xie, Lei; zhang, Dahai; Fei, Qingguo

doi:10.1016/j.measurement.2023.112567

Cited by 6 publications

(1 citation statement)

References 39 publications

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“…Siyuan Fang et al presented a new R-value measurement method based on the use of two stereo DIC systems to measure thickness strain at any point on a sheet metal surface [ 18 ]. Rui Zhu et al developed a multi-camera array system for full-field modal measurements [ 19 ]. Although the first and second methods are suitable for measuring static or quasi-static deformation, the object cannot move and it requires manual intervention for capturing images.…”

Section: Introductionmentioning

confidence: 99%

Study on the Compressive Properties of an Elastomeric Porous Cylinder Using 360° Three-Dimensional Digital Image Correlation System

Sun

Zhao

et al. 2023

Materials

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To study the compressive properties of an elastomeric porous cylinder, a 360° 3D digital image correlation (DIC) system is proposed. This compact vibration isolation table system captures different segments of the object from four different angles and fields of view, enabling a comprehensive measurement of the full surface of the object. To increase the stitching quality, a coarse–fine coordinate matching method is presented. First, a three-dimensional rigid body calibration auxiliary block is employed to track motion trajectory, which enables preliminary matching of four 3D DIC sub-systems. Subsequently, scattered speckle information characteristics guide fine matching. The accuracy of the 360° 3D DIC system is verified through a three-dimensional shape measurement conducted on a cylindrical shell, and the maximum relative error of the shell’s diameter is 0.52%. A thorough investigation of the 3D compressive displacements and strains exerted on the full surface of an elastomeric porous cylinder are investigated. The results demonstrate the robustness of the proposed 360° measuring system on calculating images with voids and indicate a negative Poisson’s ratio of periodically cylindrical porous structures.

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Section: Introductionmentioning

confidence: 99%