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Thin-Sheet-Metal Bending by Laser Peen Forming with Femtosecond Laser
- Source :
- Journal of the Japan Society for Technology of Plasticity. 50:868-872
- Publication Year :
- 2009
- Publisher :
- The Japan Society for Technology and Plasticity, 2009.
-
Abstract
- A femtosecond laser is a type of ultrashort-pulse laser. Femtosecond laser irradiation induces high-pressure plasma and shock waves at the surface of a target. Under some irradiation conditions, such shock waves are enough to deform the target plastically. Laser peen forming is a type of sheet metal forming using this deformation by shock waves. The author adopted laser peen forming using femtosecond laser for thin-sheet-metal bending. Generally, shock waves induced in air are much smaller than those induced in water, and thus; are unfavorable for plastic deformation. However, the shock waves induced by a femtosecond laser were enough to bend a thin sheet metal even in air. Elastic pre-bending was adopted during the process. Bending angle was increased by applying pre-bending. The effects of laser irradiation conditions on bending efficiency were investigated. The large spot diameter and high fluence improved bending efficiency.
- Subjects :
- Shock wave
Materials science
Laser peening
Physics::Optics
Bending
Industrial and Manufacturing Engineering
law.invention
X-ray laser
law
General Materials Science
Physics::Atomic Physics
Irradiation
Composite material
Mechanical Engineering
Metals and Alloys
Laser
eye diseases
Computer Science Applications
Mechanics of Materials
Modeling and Simulation
visual_art
Femtosecond
Ceramics and Composites
visual_art.visual_art_medium
Deformation (engineering)
Sheet metal
Subjects
Details
- ISSN :
- 18820166 and 00381586
- Volume :
- 50
- Database :
- OpenAIRE
- Journal :
- Journal of the Japan Society for Technology of Plasticity
- Accession number :
- edsair.doi.dedup.....7688fb3126e8d6213998c5b9e7366cc7