Chinese Optics, Volume. 16, Issue 4, 796(2023)
Imaging and detection method for static interferometric high-temperature temperature field
In order to realize the non-contact high-precision measurement of high-temperature temperature fields such as the tail flame, combustion and explosion of aerospace engines, a static interferometric high-temperature temperature field imaging and detection method is studied. Firstly, a static interference high-temperature temperature field detection system is designed. On the basis of theoretical analysis of the measurement principle of high-temperature temperature fields, the relationship between the optical path difference and the temperature at the lowest point of high-temperature interference signal intensity is studied. Secondly, according to the response band of the visible light area array detector and the common temperature range, a static interferometric Savart prism is designed, and temperature field imaging is realized by using it for one-dimensional scanning. Finally, the optical system is designed and the corresponding relationship between the minimum optical path difference of the interference and the temperature is obtained by fitting. From this, the linear fitting formula is obtained. Simulations are conducted to verify the interference signal image where the temperature field after passing through the system reaches the area detector. The static interferometric high-temperature temperature field detection method can achieve the high-precision detection of 1000 K-3000 K temperatures. In the linear region, the temperature measurement resolution is 1.4 K and the temperature measurement relative error is better than 0.8%. This research lays the foundation for high-precision high-temperature temperature field imaging in the military and civilian fields.
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Rui ZHANG, Cheng-yu XU, Zhi-bin WANG, Wei-ping TANG, Peng XUE, Meng-wei LI. Imaging and detection method for static interferometric high-temperature temperature field[J]. Chinese Optics, 2023, 16(4): 796
Category: Original Article
Received: Jul. 22, 2022
Accepted: --
Published Online: Jul. 27, 2023
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