Quantitative Identification and Comparative Study of Defects Based on Phase and Surface Temperatures

CHEN Lin; LI Minqian; GAO Feng; LIU Min; ZHANG Chi

Volume 44 Issue 6

Jun. 2022

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CHEN Lin, LI Minqian, GAO Feng, LIU Min, ZHANG Chi. Quantitative Identification and Comparative Study of Defects Based on Phase and Surface Temperatures[J]. Infrared Technology , 2022, 44(6): 635-640.

Citation:

CHEN Lin, LI Minqian, GAO Feng, LIU Min, ZHANG Chi. Quantitative Identification and Comparative Study of Defects Based on Phase and Surface Temperatures[J]. Infrared Technology , 2022, 44(6): 635-640.

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Quantitative Identification and Comparative Study of Defects Based on Phase and Surface Temperatures

1.
Weaponry Department, Naval Petty Officer Academy, Bengbu 233000, China
2.
Unit 92957 of Navy, Zhoushan 316000, China

Received Date: 2020-11-09
Rev Recd Date: 2021-02-28
Publish Date: 2022-06-20

Abstract

Abstract

To improve the accuracy of infrared detection and realize synchronous detection of defect depth and size, a conjugate gradient recognition algorithm is integrated with pulsed thermography and pulsed phase thermography. Quantitative identification of infrared technology is achieved based on the phase and surface temperatures. The influence of these factors on the identification result is analyzed using numerical examples. The results show that without temperature errors, the defect is accurately identified based on the phase and surface temperature. The random temperature error decreases the accuracy of the identification result based on the phase and surface temperature. The uniform temperature error decreases the accuracy of the identification result based on the surface temperature. However, the uniform temperature measurement error does not affect the identification result based on the phase.
- quantitative identification,
- comparative study,
- infrared detection,
- conjugate gradient

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References(14)

References

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