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Optical array-pyrometer for measuring temperature distribution of aero-engine turbine disk.

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Title: Optical array-pyrometer for measuring temperature distribution of aero-engine turbine disk.
Authors: Zhang, Zezhan1 (AUTHOR), Huang, Hairui1 (AUTHOR), Zhang, Zixiang1 (AUTHOR), Zhang, Wei1 (AUTHOR), Xu, Jiawen1 (AUTHOR), Gao, Shan2 (AUTHOR), Wang, Chao1,3 (AUTHOR) c_wang@tsinghua.edu.cn, Niu, Yi1 (AUTHOR) niuyi@uestc.edu.cn, Jiang, Jing1 (AUTHOR) jiangj@uestc.edu.cn
Source: Infrared Physics & Technology. May2026, Vol. 155, pN.PAG-N.PAG. 1p.
Subjects: Pyrometry, Pyrometers, Thermal stability, Infrared imaging, Color temperature, Temperature measurements, Rotors
Abstract: • An optical array scanning method is proposed for measuring turbine disk temperature field under operating conditions. • Tiny optical probe stable at 500°C for 3 h without cooling suits aircraft engines' confined, high-temp measurement. • 2D temperature field reconstruction via a 1D ring for turbine disks captures rotating high-temp disk temperature distribution. The turbine disk of an aero-engine is a vital component that endures high temperatures and strong stress loads, making the measurement of its temperature distribution essential. Current methods for measuring the temperature distribution of a turbine disk are not effective for online use due to high rotational speeds, challenging measurement conditions, and limited space. Therefore, this study introduces an optical array-pyrometer for assessing the turbine disk's temperature distribution. Initially, a 3-hour thermal stability test was conducted on a tiny optical probe at 500°C, showing that the energy transmission efficiency and structural stability of the probe remained steady, and the optical-electric conversion linearity was maintained. Next, an accuracy test using a static alloy sample was performed. The maximum measurement error for colorimetric thermometry was 1.73%, significantly lower than the 13.88% error observed with brightness thermometry. Finally, the optical array-pyrometer was employed to measure a rotating high-temperature disk sample, and the resulting temperature distribution accurately reflected the sample's true temperature distribution. The optical array-pyrometer uses high-speed single-point temperature measurement, and its array-based design compensates for the slower frame rate of the infrared thermal imager, offering a new method for online measurement of the turbine disk temperature distribution. [ABSTRACT FROM AUTHOR]
Copyright of Infrared Physics & Technology is the property of Elsevier B.V. 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.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 192617991
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Optical array-pyrometer for measuring temperature distribution of aero-engine turbine disk.
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  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Zezhan%22">Zhang, Zezhan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Hairui%22">Huang, Hairui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Zixiang%22">Zhang, Zixiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Wei%22">Zhang, Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Jiawen%22">Xu, Jiawen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gao%2C+Shan%22">Gao, Shan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Chao%22">Wang, Chao</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> c_wang@tsinghua.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Niu%2C+Yi%22">Niu, Yi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> niuyi@uestc.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Jiang%2C+Jing%22">Jiang, Jing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jiangj@uestc.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Infrared+Physics+%26+Technology%22">Infrared Physics & Technology</searchLink>. May2026, Vol. 155, pN.PAG-N.PAG. 1p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Pyrometry%22">Pyrometry</searchLink><br /><searchLink fieldCode="DE" term="%22Pyrometers%22">Pyrometers</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+stability%22">Thermal stability</searchLink><br /><searchLink fieldCode="DE" term="%22Infrared+imaging%22">Infrared imaging</searchLink><br /><searchLink fieldCode="DE" term="%22Color+temperature%22">Color temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Temperature+measurements%22">Temperature measurements</searchLink><br /><searchLink fieldCode="DE" term="%22Rotors%22">Rotors</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • An optical array scanning method is proposed for measuring turbine disk temperature field under operating conditions. • Tiny optical probe stable at 500°C for 3 h without cooling suits aircraft engines' confined, high-temp measurement. • 2D temperature field reconstruction via a 1D ring for turbine disks captures rotating high-temp disk temperature distribution. The turbine disk of an aero-engine is a vital component that endures high temperatures and strong stress loads, making the measurement of its temperature distribution essential. Current methods for measuring the temperature distribution of a turbine disk are not effective for online use due to high rotational speeds, challenging measurement conditions, and limited space. Therefore, this study introduces an optical array-pyrometer for assessing the turbine disk's temperature distribution. Initially, a 3-hour thermal stability test was conducted on a tiny optical probe at 500°C, showing that the energy transmission efficiency and structural stability of the probe remained steady, and the optical-electric conversion linearity was maintained. Next, an accuracy test using a static alloy sample was performed. The maximum measurement error for colorimetric thermometry was 1.73%, significantly lower than the 13.88% error observed with brightness thermometry. Finally, the optical array-pyrometer was employed to measure a rotating high-temperature disk sample, and the resulting temperature distribution accurately reflected the sample's true temperature distribution. The optical array-pyrometer uses high-speed single-point temperature measurement, and its array-based design compensates for the slower frame rate of the infrared thermal imager, offering a new method for online measurement of the turbine disk temperature distribution. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Infrared Physics & Technology is the property of Elsevier B.V. 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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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1016/j.infrared.2026.106480
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Pyrometry
        Type: general
      – SubjectFull: Pyrometers
        Type: general
      – SubjectFull: Thermal stability
        Type: general
      – SubjectFull: Infrared imaging
        Type: general
      – SubjectFull: Color temperature
        Type: general
      – SubjectFull: Temperature measurements
        Type: general
      – SubjectFull: Rotors
        Type: general
    Titles:
      – TitleFull: Optical array-pyrometer for measuring temperature distribution of aero-engine turbine disk.
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            NameFull: Zhang, Zezhan
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            NameFull: Huang, Hairui
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            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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