Zhonghan Zhou, Xueyong Tian, Lanxiang Sun, Peng Zhang, Zhiwei Guo, Lifeng Qi. Identification of Aluminum Alloy Grades by Fiber-Laser Induced Breakdown Spectroscopy Combined with Support Vector Machine[J]. Laser & Optoelectronics Progress, 2018, 55(6): 063002
- Laser & Optoelectronics Progress
- Vol. 55, Issue 6, 063002 (2018)
Fig. 1. Fiber-LIBS experimental system
Fig. 2. Schematic of control sequence of laser and spectrometer
Fig. 3. Aluminum alloy samples
Fig. 4. Prediction results of original spectral test sets
Fig. 5. Invalid spectra, saturated spectra and normal spectra
Fig. 6. Prediction results of filtered spectral test sets
Fig. 7. Prediction results of normalized spectral test sets
Fig. 8. Prediction results of spectral test sets after filter, normalization and principal component analysis
Fig. 9. Verification of SVM with different inputs using leave-one-out. (a) Prediction accuracy; (b) modeling time
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Table 1. Grades and serial number of aluminum alloy samples
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Table 2. Average prediction accuracy and mean modeling time of SVM with different inputs
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