Minyang Wu, Yinhang Ma, Hao Cheng, Fujun Yang. Color-Camera-Based Dual-Wavelength Shearography for Simultaneously Measuring in-Plane and out-of-Plane Displacement Derivatives[J]. Acta Optica Sinica, 2020, 40(18): 1812002
- Acta Optica Sinica
- Vol. 40, Issue 18, 1812002 (2020)
Fig. 1. Schematic of dual-wavelength shearography setup
Fig. 2. Diagrams of image shearing. (a) Before shearing; (b) after shearing
Fig. 3. Diagram of optical path and displacement. (a) Green laser; (b) blue laser
Fig. 4. Cantilever beam. (a) Schematic of geometric arrangement; (b) loading setup
Fig. 5. Color speckle pattern and its RGB components
Fig. 6. Wrapped phase maps. (a) Green channel; (b) blue channel
Fig. 7. Experimental and theoretical comparison chart. (a) Derivative of measured in-plane displacement; (b) finite element simulation to calculate in-plane strain; (c) derivative of measured out-of-plane displacement; (d) dw/dx comparison of experimental and theoretical solutions
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20