Opto-Electronic Advances, Volume. 1, Issue 9, 180016(2018)
Acoustic wave detection of laser shock peening
Figures & Tables(9)
Fig. 4. Effect of laser pulse energy on acoustic wave signal energy.
Fig. 5. The relationship between the surface residual stress and acoustic wave signal energy.
Table 1. chemical compositions of TiAl alloy.
View tableView in ArticleTable 1. chemical compositions of TiAl alloy.
Element wt% Al 31.3 Cr 2.69 Nb 4.88 B 0.04 O 0.072 N 0.013 H 0.003 Ti Bal
Table 2. The main technical parameters of high energy nanosecond pulsed Nd: YAG laser.
View tableView in ArticleTable 2. The main technical parameters of high energy nanosecond pulsed Nd: YAG laser.
Technical parameters Value Working substance Nd:YAG Laser wavelength (nm) 1064 Pulse energy (J) 1.0-7.0 Working frequency (Hz) Single, 0.25, 0.5, 1, 2, 5 Laser pulse width (ns) 9-21 Energy distribution Gaussian distribution Spot shape Circle Spot diameter (mm) 1-5
Table 3. Laser intensity of each associated laser energy.
View tableView in ArticleTable 3. Laser intensity of each associated laser energy.
Laser energy (J) Laser intensity (GW/cm2) 5.0 5.05 5.4 5.46 5.8 5.86 6.2 6.27 6.6 6.67 7.0 7.08
Table 4. Basic parameters of X-ray diffraction stress measurement.
View tableView in ArticleTable 4. Basic parameters of X-ray diffraction stress measurement.
Parameter Description X-ray tube Ti-Ka Diffraction plane (202) r Voltage (kV) 25 Current (mA) 25 Angle (°) ±5 Method of peak position determination Half-maximum intensity Spot diameter (mm) 3
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Acoustic wave detection of laser shock peening[J]. Opto-Electronic Advances, 2018, 1(9): 180016
Paper Information
Category: Original Article
Received: Sep. 19, 2018
Accepted: Nov. 11, 2018
Published Online: Jan. 10, 2019
The Author Email: (jbzhao@sia.cn)
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