Undercuts by Laser Shock Forming

Journal Article · Wed May 04 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3589697· OSTI ID:21516715

Wielage, Hanna; Vollertsen, Frank ^[1]

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1. BIAS-Bremer Institut fuer angewandte Strahltechnik GmbH, Klagenfurter Str. 2, 28359 Bremen (Germany)

In laser shock forming TEA-CO{sub 2}-laser induced shock waves are used to form metal foils, such as aluminum or copper. The process utilizes an initiated plasma shock wave on the target surface, which leads to a forming of the foil. A challenge in forming technologies is the manufacturing of undercuts. By conventional forming methods these special forms are not feasible. In this article, it is presented that undercuts in the micro range can be produced by laser shock deep drawing. Different drawing die diameters, drawing die depths and the material aluminum in the thicknesses 20 and 50 {mu}m were investigated. It will be presented that smaller die diameters facilitate undercuts compared to bigger die diameters. The phenomena can be explained by Barlow's formula. Furthermore, it is shown which maximum undercut depth at different die diameters can be reached. To this end, cross-sections of the different parameter combinations are displayed.

• OSTI ID: 21516715
• Journal Information: AIP Conference Proceedings, Vol. 1353, Issue 1; Conference: ESAFORM 2011: 14. international ESAFORM conference on material forming, Belfast, Northern Ireland (United Kingdom), 27-29 Apr 2011; Other Information: DOI: 10.1063/1.3589697; (c) 2011 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALUMINIUM
BEVERAGES
CARBON DIOXIDE LASERS
COPPER
CROSS SECTIONS
DIES
DRAWING
FOILS
FRACTURES
LASER BEAM MACHINING
LASER RADIATION
MANUFACTURING
PLASMA
SHOCK WAVES
SURFACES
THERMAL SHOCK
THICKNESS
DIMENSIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
FABRICATION
FAILURES
FOOD
GAS LASERS
LASERS
MACHINING
MATERIALS WORKING
METALS
RADIATIONS
TRANSITION ELEMENTS