Research on weak bonding defect detection based on laser shock wave

Mengyu CAO; Hebin WU; Yongkang ZHANG

doi:10.7510/jgjs.issn.1001-3806.2025.04.003

Laser Technology, Volume. 49, Issue 4, 495(2025)

Research on weak bonding defect detection based on laser shock wave

Mengyu CAO^1,2, Hebin WU^1,2, and Yongkang ZHANG^1,2、*

¹Guangdong Provincial Key Laboratory of Advanced Manufacturing Technology of Marine Energy Equipment, Guangdong University of Technology, Guangzhou 510006, China

²School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China

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Figures & Tables(14)

Fig. 1. [in Chinese]

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Table 0. [in Chinese]
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Table 0. [in Chinese]
parameter value
Poisson ratio ν 0.04
elasticity modulus/GPa 2.7
tensile strength/MPa 37
shear strength/MPa 32

Table 0. [in Chinese]

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Table 0. [in Chinese]

technical index	parameter value
laser pulse width/ns	18.8 ~264.6
laser pulse energy/J	0 ~19.2
laser center wavelength/nm	1054
laser energy instability	≤±5%
laser pulse amplifies the spontaneous radiation energy/J	≤0.2

Table 0. [in Chinese]
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Table 0. [in Chinese]
parameter value
tensile strength/MPa 785
tensile modulus/GPa 65.0
compression strength/MPa 531
modulus of compression/GPa 60