Mechanical effects during pulsed laser and metals interaction in glycerol-water mixtures

Xiu Mei Liu; Jie He; Jian Lu; Xiao Wu Ni

doi:10.1117/12.754504

4 January 2008 Mechanical effects during pulsed laser and metals interaction in glycerol-water mixtures

Xiu Mei Liu, Jie He, Jian Lu, Xiao Wu Ni

Proceedings Volume 6825, Lasers in Material Processing and Manufacturing III; 682513 (2008) https://doi.org/10.1117/12.754504
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

In order to study the effect of viscosity on the mechanical effects during laser-metal interaction, the transient forces loading on a metal plate in various glycerol-water mixtures are investigated by a fiber-optic diagnostic technique based on optical beam deflection (OBD). The experimental results show that a target in glycerol mixtures is impacted in turn by laser-plasma ablation force and high-speed liquid-jet impulse induced by bubbles collapse in the vicinity of a solid boundary. The amplitudes of the two forces decrease monotonously with less laser energy. Furthermore, strong differences of mechanical effects are observed in the glycerol mixtures and water. Viscosity has the effect of dampening mechanical energy. And increased viscosity is seen to decrease the amplitudes of the two forces but increase bubble life-time.

Citation Download Citation

Xiu Mei Liu, Jie He, Jian Lu, and Xiao Wu Ni "Mechanical effects during pulsed laser and metals interaction in glycerol-water mixtures", Proc. SPIE 6825, Lasers in Material Processing and Manufacturing III, 682513 (4 January 2008); https://doi.org/10.1117/12.754504

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