Yuan-chao FAN, Xiao-jing CHEN, Guang-zao HUANG, Lei-ming YUAN, Wen SHI, Xi CHEN. Evaluation of Aging State of Wire Insulation Materials Based on Raman Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2022, 42(10): 3161
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 10, 3161 (2022)
Fig. 1. Principle of Raman spectrum detection platform
Fig. 2. Sample accelerated aging flow chart
Fig. 3. Temperature aging spectrum of polypropylene at each stage
Fig. 4. Temperature aging spectrum of PVC material at each stage
Fig. 5. UV aging spectrum of polypropylene at each stage
Fig. 6. UV aging spectrum of PVC at each stage
Fig. 7. Classification results of polypropylene raw data
(a): Temperature aging LRC; (b): Temperature aging SVM; (c): UV aging LRC; (d): UV aging SVM
(a): Temperature aging LRC; (b): Temperature aging SVM; (c): UV aging LRC; (d): UV aging SVM
Fig. 8. Data preprocessing spectrogram of polypropylene
(a): Baseline correction; (b): Smoothing
(a): Baseline correction; (b): Smoothing
Fig. 9. Contribution rate of the first three principal components in Raman spectrum of polypropylene
Fig. 10. Classification effect of polypropylene material data preprocessing
(a): Temperature aging SVM; (b): UV aging SVM
(a): Temperature aging SVM; (b): UV aging SVM
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Table 1. Specific parameters of blast drying oven
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