Three-Dimensional Shape and Deformation Measurements Based on Fringe Projection Profilometry and Fluorescent Digital Image Correlation via a 3 Charge Coupled Device Camera

We propose a novel hybrid FPP-DIC technique to measure an object’s shape and deformation in 3D simultaneously by using single 3CCD color camera, which captures the blue fringe patterns red fluorescent speckles within same image. Firstly, were painted on surface of specimen. Subsequently, 12 computer-generated with black background projected onto specimen DLP projector. Finally, both reference deformed images three different frequencies four shifted phases captured camera. This employed three-chip configuration red–green–blue chips discretely integrated camera sensor, rendering independent capture RGB information possible. Measurement out-of-plane displacement was carried out through implementation Fringe Projection Profilometry (FPP), whereas in-plane evaluated 2D Digital Image Correlation (DIC) method leveraging telecentric-lens-based optical system. In comparison traditional methodology, present approach showed lower incidence crosstalk between speckle while also offering corrective for coupling displacement. Experimental results cantilever beam disk comparisons 3D-DIC indicated that maximum discrepancy obtained 0.7 μm 0.034 mm magnifications, respectively, validating effectiveness precision proposed method.