Numerical and experimental investigations of laser shock hydraulic microforming for thin-walled foils

Liu, Huixia; Jiang, Chenkun; Liu, Fei; Ma, Youjuan; Wang, Xiao

doi:10.1016/j.tws.2019.106219

Cited by 12 publications

(2 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Laser shock waves can be used for micro-coining to replicate features on the metal surface. In [14], laser shock hydraulic forming was proved to have a good matching influence and can prevent or even suppress copper foil springback, which is appropriate for forming features of the large-region array. In [15], the punch force behavior was investigated during the micro v-bending of the copper foil.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Cavitation Water Jet Shock as a Newly Technology on Micro-Forming Process

Quaisie

Yambah

Tabie³

et al. 2023

Eng. Technol. Appl. Sci. Res.

View full text Add to dashboard Cite

This article proposes a novel technology called water jet cavitation shock micro-forming to fabricate micro-features on 304 stainless steel foils with a thickness of 100µm, using a cavitation nozzle with an incident pressure of 8 to 20MPa. This study investigated the surface morphology of the formed part, the influence of incident pressure, target distance, and impact time on the forming depth, and analyzed the punching phenomenon of the formed components. The experimental results after the water jet cavitation shocking indicated that the surface morphology of the formed part of the 304 stainless foil sample had good quality and no conventional defects such as die scratches and cracks. Furthermore, when the incident pressure was 20MPa, the height of the uniform-shaped spherical cap exceeded 262µm. The forming depth increased with increasing incident pressure and impact time. Under an incident pressure of 20MPa, with the increase of target distance, the average depth of the formed part increased at first and then decreased. Finally, the analysis of the blanking phenomenon indicated that when the incident pressure increased to 30MPa, the workpiece was completely blanked. This is mainly because, under this incident pressure, the shockwave pressure generated by the collapse of the bubble deforms the workpiece beyond the stress limit of the material itself.

show abstract

Section: Introductionmentioning

confidence: 99%

The Effect of Cavitation Water Jet Shock as a Newly Technology on Micro-Forming Process

Quaisie

Yambah

Tabie³

et al. 2023

Eng. Technol. Appl. Sci. Res.

View full text Add to dashboard Cite

show abstract

“…1113) Laser shock hydraulic microforming was found valid to prevent the springback of copper foil. 14) In the very high speed deformation the punch is not used, because the fracture of the material occurs at the whole perimeter of the die hole in an extremely short time. In this condition, the inertial force of the scrap and the internal pressure contributes the separating motion of the material.…”

Section: Introductionmentioning

confidence: 99%

Punchless Piecing Process of Aluminum Tube Wall by Impulsive Water Pressure

2023

View full text Add to dashboard Cite

Piecing of the aluminum alloy A6063-T6 tube was attempted with the help of impulsive water pressure in the tube caused by the impact of drop-hammer. The availability of this approach was investigated. Shapes of the die hole were circular, square and long rectangle. The outer diameter was 40 mm, and the wall thickness was 1 mm. The maximum impact velocity was 10 m•s ¹1 . The pressure at the occurrence of crack was almost same for different impact velocity of the drop-hammer. However, if the number of holes was increased from 2 to 4, all the holes could not be pierced. The circular hole with a diameter of 10 mm and the square hole with an edge length of 10 mm were successfully created. When the size was doubled, the material did not partially separate. The water pressure rapidly increased and crack occurs at around 1 ms depending on the impact velocity. The effect of positive strain-rate sensitivity of the material was observed in comparison with the quasistatic experimental result. Profile of the hole edge was tapered. Burr formation was not observed, which is a significant advantage of this process.

show abstract

Formability and mechanism of pulsed current pretreatment–assisted laser impact microforming

Zhang

Wang

et al. 2021

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Numerical and experimental investigations of laser shock hydraulic microforming for thin-walled foils

Cited by 12 publications

References 39 publications

The Effect of Cavitation Water Jet Shock as a Newly Technology on Micro-Forming Process

The Effect of Cavitation Water Jet Shock as a Newly Technology on Micro-Forming Process

Punchless Piecing Process of Aluminum Tube Wall by Impulsive Water Pressure

Formability and mechanism of pulsed current pretreatment–assisted laser impact microforming

Contact Info

Product

Resources

About