Ultraviolet Single-Camera Stereo-Digital Image Correlation for Deformation Measurement up to 2600 °C.
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| Title: | Ultraviolet Single-Camera Stereo-Digital Image Correlation for Deformation Measurement up to 2600 °C. |
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| Authors: | Luo, Y. X.1 (AUTHOR), Dong, Y. L.1,2 (AUTHOR) dongyali@buaa.edu.cn, Yang, F. Q.1 (AUTHOR), Lu, X. Y.1 (AUTHOR) |
| Source: | Experimental Mechanics. Oct2024, Vol. 64 Issue 8, p1343-1355. 13p. |
| Subjects: | Speckle interference, Pyrometry, Deformation potential, Elastic modulus, Heat radiation & absorption |
| Abstract: | Background: In the mechanical testing of high-temperature structural materials, ultra-high temperature deformation measurement is very necessary and very challenging. Objective: To overcome the challenge of using single-camera stereo-digital image correlation (stereo-DIC) for ultra-high-temperature measurement. Methods: An ultraviolet single-camera stereo-DIC system combining active UV illuminations, an ultraviolet camera, a single UV narrow bandpass filter, a reflective prism and two reflectors was established. In addition, two types of high temperature speckle patterns were prepared A tensile test of C/C composites at 2600 °C was conducted to verify the effectiveness and accuracy of the developed technology. Results: The ultraviolet single-camera stereo-DIC system has excellent resistance to thermal radiation. As well, the two types of speckle patterns are available at 2600 °C. And the values of elastic modulus calculated by the developed technology and high-temperature extensometer are very close to each other, and the relative errors are less than 7%. Conclusions: The well matched strain results with high-temperature extensometer data demonstrates that the ultraviolet single-camera stereo-DIC is an effective ultra-high temperature deformation measurement technology and has great potential in characterizing the deformation response of materials at ultra-high temperatures. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | Background: In the mechanical testing of high-temperature structural materials, ultra-high temperature deformation measurement is very necessary and very challenging. Objective: To overcome the challenge of using single-camera stereo-digital image correlation (stereo-DIC) for ultra-high-temperature measurement. Methods: An ultraviolet single-camera stereo-DIC system combining active UV illuminations, an ultraviolet camera, a single UV narrow bandpass filter, a reflective prism and two reflectors was established. In addition, two types of high temperature speckle patterns were prepared A tensile test of C/C composites at 2600 °C was conducted to verify the effectiveness and accuracy of the developed technology. Results: The ultraviolet single-camera stereo-DIC system has excellent resistance to thermal radiation. As well, the two types of speckle patterns are available at 2600 °C. And the values of elastic modulus calculated by the developed technology and high-temperature extensometer are very close to each other, and the relative errors are less than 7%. Conclusions: The well matched strain results with high-temperature extensometer data demonstrates that the ultraviolet single-camera stereo-DIC is an effective ultra-high temperature deformation measurement technology and has great potential in characterizing the deformation response of materials at ultra-high temperatures. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00144851 |
| DOI: | 10.1007/s11340-024-01087-5 |
