Multi-camera digital image correlation method with distributed fields of view

作者：Malowany Krzysztof^*; Malesa Marcin; Kowaluk Tomasz; Kujawinska Malgorzata

来源：Optics and Lasers in Engineering, 2017, 98: 198-204.

DOI：10.1016/j.optlaseng.2017.05.003

• Multi-camera digital image correlation
• Experimental mechanics
• Non-destructive testing
• Laser tracker

A multi-camera digital image correlation (DIC) method and system for measurements of large engineering objects with distributed, non-overlapping areas of interest are described. The data obtained with individual 3D DIC systems are stitched by an algorithm which utilizes the positions of fiducial markers determined simultaneously by Stereo-DIC units and laser tracker. The proposed calibration method enables reliable determination of transformations between local (3D DIC) and global coordinate systems. The applicability of the method was proven during in-situ measurements of a hall made of arch-shaped (18 m span) self-supporting metal-plates. The proposed method is highly recommended for 3D measurements of shape and displacements of large and complex engineering objects made from multiple directions and it provides the suitable accuracy of data for further advanced structural integrity analysis of such objects.

• 出版日期2017-11