Numerical and experimental research on laser-induced cavitation punch aluminum foil

The shock wave and the micro-jet generated by the laser-induced cavitation provide a major impact force for micro-stamping. However, the micro-jet generated by the collapse of the bubble is a high-speed and high-pressure transient process. According to the dynamic of cavitation, the finite element m...

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Bibliographic Details
Published in:Procedia CIRP 2020, Vol.95, p.864-868
Main Authors: Liangliang, Wang, Zhongning, Guo, Yu, Deng, Tieniu, Chen, Guokang, Su
Format: Article
Language:English
Subjects:
Cavitation
Laser
Micro-stamping
Microjet
Shock wave
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Summary:The shock wave and the micro-jet generated by the laser-induced cavitation provide a major impact force for micro-stamping. However, the micro-jet generated by the collapse of the bubble is a high-speed and high-pressure transient process. According to the dynamic of cavitation, the finite element method is used to establish the model of a cavitation bubble in a hollow channel, and its consequent impact micro-jet are analyzed. In addition, a high-speed camera is utilized to compare and verify the simulation results. The result shows that the velocity of micro-jet reached 33.3 m/s with a high pressure of 240MPa in hundred microseconds. Lastly, with the wavelength of energy is 532 nm, the pulse width is 7 ns and the single pulse energy is 10mJ, an array for grooves with the width of 120 μm was successfully obtained on a 40 μm thick aluminum foil.
ISSN:2212-8271
2212-8271
DOI:10.1016/j.procir.2020.01.185