title: Experimental investigation on dynamic characteristics and strengthening mechanism of laser-induced cavitation bubbles.
abstract: The dynamic features of nanosecond laser-induced cavitation bubbles near the light alloy boundary were investigated with the high-speed photography. The shock-waves and the dynamic characteristics of the cavitation bubbles generated by the laser were detected using the hydrophone. The dynamic features and strengthening mechanism of cavitation bubbles were studied. The strengthening mechanisms of cavitation bubble were discussed when the relative distance parameter γ was within the range of 0.5-2.5. It showed that the strengthening mechanisms caused by liquid jet or shock-waves depended on γ much. The research results provided a new strengthening method based on laser-induced cavitation shotless peening (CSP).
authors.affiliation: Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR China. Electronic address: renxd@mail.ujs.edu.cn.
authors.forename: X D
authors.initials: XD
authors.lastname: Ren
authors.affiliation: Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: H
authors.initials: H
authors.lastname: He
authors.affiliation: Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Tong
authors.affiliation: Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: Y P
authors.initials: YP
authors.lastname: Ren
authors.affiliation: Research Center of Fluid Machinery Engineering and Technical, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: S Q
authors.initials: SQ
authors.lastname: Yuan
authors.affiliation: Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: R
authors.initials: R
authors.lastname: Liu
authors.affiliation: Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: C Y
authors.initials: CY
authors.lastname: Zuo
authors.affiliation: Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: K
authors.initials: K
authors.lastname: Wu
authors.affiliation: Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: S
authors.initials: S
authors.lastname: Sui
authors.affiliation: Department of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: D S
authors.initials: DS
authors.lastname: Wang
keywords: Cavitation bubble; Dynamic characteristics; Laser processing; Strengthening mechanism