US 12,112,465 B2
Full-field measurement and reconstruction method for turbine blade strain field based on dual-mode fusion
Jing Jiang, Sichuan (CN); Yi Niu, Sichuan (CN); Chao Wang, Sichuan (CN); Peifeng Yu, Sichuan (CN); Zezhan Zhang, Sichuan (CN); and Shan Gao, Sichuan (CN)
Assigned to University of Electronic Science and Technology of China, Sichuan (CN)
Filed by University of Electronic Science and Technology of China, Sichuan (CN)
Filed on Apr. 13, 2022, as Appl. No. 17/719,888.
Claims priority of application No. 202110394021.6 (CN), filed on Apr. 13, 2021.
Prior Publication US 2022/0237766 A1, Jul. 28, 2022
Int. Cl. G06T 7/00 (2017.01); G01B 11/16 (2006.01); G01J 5/00 (2022.01); G06T 7/73 (2017.01)
CPC G06T 7/0002 (2013.01) [G01B 11/16 (2013.01); G01J 5/0088 (2013.01); G06T 7/73 (2017.01); G06T 2207/20021 (2013.01); G06T 2207/30164 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A measurement and reconstruction method for a turbine blade strain field based on fusion of an imaging technology and an infrared photoelectric measurement technology, comprising steps of: using the imaging technology to perform digital image measurement and treatment on a strain of a blade surface area, and calculating a displacement change of the blade surface area based on blade surface feature points; using the infrared photoelectric measurement technology to collect infrared radiation signals at blade edges, and identifying a displacement change of the blade edges at different temperatures based on radiation intensity differences between blades and blade gaps; fusing data measured by the two technologies through interpolation to obtain a target blade overall displacement change distribution under a specific working condition, and reconstructing a blade full-field strain, wherein the two measurements are performed independently with one dual-mode probe.