Jianying GUO, Jin LIANG, Meitu YE, Mingming WANG, Wei SHI. Mirror-assisted multi-view measurement of 3D deformation for aero-engine casing[J]. Optics and Precision Engineering, 2022, 30(24): 3105
- Optics and Precision Engineering
- Vol. 30, Issue 24, 3105 (2022)
Fig. 1. Camera keyhole imaging model
Fig. 2. Principle of digital image correlation measurement
Fig. 3. Mirror measurement scheme
Fig. 4. Measurement process
Fig. 5. Experimental site of accuracy verification
Fig. 6. Calibration accuracy comparison of the two DIC units
Fig. 7. Morphology fitting of reconstructed surfaces
Fig. 8. Results of uniaxial tensile strain
Fig. 9. Scheme of casing test
Fig. 10. Testing site of casing
Fig. 11. Photogrammetry of measurement site of casing and subset division
Fig. 12. 3D reconstruction of ribbed plate in inner region of tested casing prototype
Fig. 13. Casing simulation calculation
Fig. 14. Measurement of casing deformation
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Table 1. Camera calibration result
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Table 2. DIC deformation field of rib plate a surface
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