Investigation on laser cavitation micro-forming process: Deformation behavior of 1060 aluminum foil and bubble evolution in a gap. (July 2021)

• Record Type: Journal Article
• Authors: Lu, Zhubi; Gu, Jiayang; Zhang, Penghua; Luo, Chunhui; Ren, Xudong
• Is Part Of: Journal of manufacturing processes. Volume 67(2021)
• Page Start: 619
• Page End: 627
• Publication Date: 2021-07
• Subjects: Laser cavitation micro-forming -- Aluminum foil -- Water-jet -- Shock wave; Production management -- Data processing -- Periodicals; Manufacturing processes -- Periodicals; Procestechnologie; Productietechniek; Production -- Gestion -- Informatique -- Périodiques; Fabrication -- Périodiques; Manufacturing processes; Production management -- Data processing; Periodicals; 670.5
• DOI: 10.1016/j.jmapro.2021.05.010
• Languages: English
• ISSNs: 1526-6125

Abstract

Graphical abstract: Highlights: A method for fabricating microfeatures on aluminum foil conducted with cavitation bubble was proposed. The deformation behavior of aluminum foil was discussed. The cavitation bubble dynamics in a gap were investigated. Abstract: The water-jet and shock waves generated by laser-induced cavitation were employed to the laser cavitation micro-forming (LCMF). The LCMF is a new method for fabricating micro features on two pieces of metal foils simultaneously. The mechanism of LCMF was investigated at the non-dimensional parameter γ (γ = L /2 Req, where L is the width of the gap, and Req is the equivalent radius). The dynamic characteristics of laser-induced cavitation bubble in a gap were studied using a high-speed photography and numerical simulation. The shock waves were detected by the hydrophone and the velocity field distribution was obtained from numerical simulation. The 1060 aluminum foil was used in LCMF, and the surface morphology, forming depth, surface roughness and thickness distribution of the formed aluminum micropores were investigated. The results indicate that the non-dimensional parameter γ has a great impact on bubble evolution in a gap. At γ = 1.29, the pressure intensity of plasma shock wave, bubble collapse shock wave and water-jet are 72.7 MPa, 40 MPa and 65.3 MPa, respectively. The forming depth, surface roughness and thickness thinning ratio decreased with the increase of γ, and maximum thickness thinning occurred at the fillet.