Acta Photonica Sinica, Volume. 50, Issue 10, 1030003(2021)
Discrimination of Aviation Alloy by Remote Laser-induced Breakdown Spectroscopy Technology
The remote Laser-induced Breakdown Spectroscopy (LIBS) technology can be applied to analysis of aviation alloy raw materials in-situ. It provides a new method for online monitoring of aviation industry production. In this work, a coaxial remote LIBS device based on fiber optic spectrometer is developed, and its focus distance can be adjusted from 1 to 30 m continuously. Using the remote LIBS, 6 raw aviation alloy samples with different brands were measured at the distance of 4 m. Then 6 characteristic spectral lines were selected for spectral analysis with K-Nearest Neighbor (KNN) algorithm. The experimental results show that the accuracy of discriminationrate can be up to 98% when the 10 laser pulses deposited on the same ablation point. The accuracy of discrimination rate can be improved to 100% when more than 20 laser pulses deposited on same ablation point. This work can help to discriminate raw materials rapidly and accurately in industrial production site with a remote distance.
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Xuyang LIU, Dacheng ZHANG, Zhongqi FENG, Jie DING, Runqiang YANG, Sijia SUN, Kejian WANG, Jiangfeng ZHU, Zhiyi WEI. Discrimination of Aviation Alloy by Remote Laser-induced Breakdown Spectroscopy Technology[J]. Acta Photonica Sinica, 2021, 50(10): 1030003
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Received: Apr. 22, 2021
Accepted: Jun. 8, 2021
Published Online: Nov. 3, 2021
The Author Email: ZHANG Dacheng (dch.zhang@xidian.edu.cn)