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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.
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]
Copyright of Experimental Mechanics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="DE" term="%22Speckle+interference%22">Speckle interference</searchLink><br /><searchLink fieldCode="DE" term="%22Pyrometry%22">Pyrometry</searchLink><br /><searchLink fieldCode="DE" term="%22Deformation+potential%22">Deformation potential</searchLink><br /><searchLink fieldCode="DE" term="%22Elastic+modulus%22">Elastic modulus</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+radiation+%26+absorption%22">Heat radiation & absorption</searchLink>
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  Data: 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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  Data: <i>Copyright of Experimental Mechanics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11340-024-01087-5
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              Text: Oct2024
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