Back to Search
Start Over
Panoramic dual-directional shearography assisted by a bi-mirror
- Source :
- Applied Optics. 59:5812
- Publication Year :
- 2020
- Publisher :
- Optica Publishing Group, 2020.
-
Abstract
- A panoramic dual-directional shearography system is proposed to simultaneously determine out-of-plane deformation derivatives in two directions and globally inspect the object to be tested. A dichroic filter (DF), a 3CCD camera, and dual-wavelength light are used in the proposed shearography configuration. The dual-wavelength light coupled with the corresponding imaging sensors of the 3CCD camera provides independent color signals and shearograms. Through adjustment of the tilted stereo-angle of the DF, which offers a second wavelength-dependent measurement, an additional independent image-shearing can be introduced into the setup. The auxiliary bi-mirror surrounding the object helps to fully illuminate the object surface and capture it in a single shot. Theoretical analysis and experimental results demonstrated the utility of the system.
- Subjects :
- Surface (mathematics)
Computer science
business.industry
Digital imaging
Single shot
Object (computer science)
01 natural sciences
Atomic and Molecular Physics, and Optics
Dual (category theory)
010309 optics
Optics
Shearography
0103 physical sciences
Dichroic filter
Electrical and Electronic Engineering
Three-CCD camera
business
Engineering (miscellaneous)
Subjects
Details
- ISSN :
- 21553165 and 1559128X
- Volume :
- 59
- Database :
- OpenAIRE
- Journal :
- Applied Optics
- Accession number :
- edsair.doi.dedup.....66b567e90d6b1f5efdd6f830b8a6fb9b
- Full Text :
- https://doi.org/10.1364/ao.394218