Guihua Li, Wanlong Ma, Tiantian Zhu, Zhongnan Fu, Pengxiang Ge. Thermal Deformation Measurement of Hollow Disk Based on Digital Image Correlation Method[J]. Laser & Optoelectronics Progress, 2021, 58(14): 1412003
- Laser & Optoelectronics Progress
- Vol. 58, Issue 14, 1412003 (2021)
Fig. 1. Schematic diagram of the DIC method. (a) Reference image; (b) target image
Fig. 2. Physical image of the specimen. (a) Original image without speckle; (b) speckle pattern
Fig. 3. Principle of thermal deformation image acquisition and measurement system
Fig. 4. Outer diameters of the specimen for the reference image and the target image. (a) Reference image (180 ℃); (b) target image (20 ℃)
Fig. 5. Change curve of the outer diameter of the specimen during the cooling process
Fig. 6. Finite element meshing diagram of the specimen
Fig. 7. Simulation result of thermal deformation of the specimen
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Table 1. Outer diameters of the specimen at the starting and ending temperatures
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Table 2. Physical parameters of the cast aluminum
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