Investigation of Liquid Impact-Based Macro-, Meso-, and Microforming Processes

Samardzic, Veljko; Geskin, E. S.; Atanov, G. A.; Semko, A. N.; Kovaliov, A.

doi:10.1007/s11665-008-9230-8

Cited by 8 publications

(2 citation statements)

References 4 publications

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“…These energy sources are mainly achieved from the chemical energy of the explosive, the electrical energy of the electric capacity, and the kinetic energy of a high-speed punch or hammer. Regarding the explosive forming, Samardzic et al [21,22] investigated the application of high-speed liquid projectiles that were accelerated by the powder explosion in a launcher (a water cannon) for parts forming. They constructed an experimental setup for water projectiles generation and a series of experiments, involving the forming of grooves; stamping; extrusion; and punching of the macro-, meso-, and micro-scale, on the metal surfaces were performed.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigations of a Novel Laser Impact Liquid Flexible Microforming Process

Liu

Jiang

et al. 2018

Metals

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A novel high strain rate microforming technique, laser impact liquid flexible embossing (LILFE), which uses laser induced shock waves as an energy source, and liquid as a force transmission medium, is proposed by this paper in order to emboss three-dimensional large area micro arrays on metallic foils and to overcome some of the defects of laser direct shock microembossing technology. The influences of laser energy and workpiece thickness on the deformation characteristics of the pure copper foils with the LILFE process were investigated through experiments and numerical simulation. A finite element model was built to further understand the typical stages of deformation, and the results of the numerical simulation are consistent with those achieved from the experiments. The experimental and simulation results show that the forming accuracy and depth of the embossed parts increases with the increase in laser energy and decrease in workpiece thickness. The thickness thinning rate of the embossed parts increases with the decrease of the workpiece thickness, and the severest thickness thinning occurs at the bar corner region. The experimental results also show that the LILFE process can protect the workpiece surface from being ablated and damaged, and can ensure the surface quality of the formed parts. Besides, the numerical simulation studies reveal the plastic strain distribution of embossed microfeatures under different laser energy.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigations of a Novel Laser Impact Liquid Flexible Microforming Process

Liu

Jiang

et al. 2018

Metals

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“…The technologies, based on liquid jets of high and ultra-high speed, are used for cutting various materials, surface treatment, destruction of rocks and concrete blocks, ammunition disposal, extinguishing the gas flares and so on [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The effective use of these technologies requires determination of the appropriate design parameters of hydro impulse jet unit, selection of optimal operating modes and parameters of the working fluid for every specific case.…”

Section: Introductionmentioning

confidence: 99%