Qing YAN, Bo PENG, Li WANG, Dong WANG, Hualong ZHAO, Fei GAO, Dengxin HUA. Research on Laser Cold Machining Hole Penetration Spectroscopy Detection Technology[J]. Acta Photonica Sinica, 2023, 52(3): 0352119
- Acta Photonica Sinica
- Vol. 52, Issue 3, 0352119 (2023)
Fig. 1. Pore penetration detection based on laser-induced breakdown spectroscopy
Fig. 2. LIBS spectrum of the sample
Fig. 3. Relationship between parameter change and spectral intensity
Fig. 4. Spectral distribution at 100 ms
Fig. 5. Spectral distribution at 1.7 s
Fig. 6. Variation of emission line intensity with time
Fig. 7. Variation of spectral intensity of characteristic spectral lines with time
Fig. 8. Spectral intensity map of each stage in the process of hole making
Fig. 9. Morphology of hole and protective material in case of incomplete hole penetration
Fig. 10. Morphology of the hole and protective material in the case of full hole penetration
Fig. 11. Morphology of protective material under excessive penetration
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Table 1. Femtosecond laser parameters
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Table 2. Spectrometer parameters
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