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Proceedings Paper

Novel technique of laser shocking fine partial forming of metal sheet
Author(s): Yongkang Zhang; Ming Zhou; Lan Cai; Youyi Xu
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Paper Abstract

A new technique about high-strain-rate fast and fine forming of metal sheet is presented in this article and the mechanism of laser shock forming is investigated elementarily from the theory. The studies indicate that when the high energy density laser impacts on the energy absorbing layer, which is coated on the surface of metal, the surface layer absorbs laser energy and forms high temperature and density plasma layer. During the duration of the pulsed laser radiation, the plasma layer expands acutely under the constraining layer, its density increases and the temperature elevates. In the end the plasma layer ejects and explodes and then as a result, the high-breadth shocking wave forms. The metal sheet obtains forming impulse in the ejection and explosion of plasma and subsequently, the said energy scatters in the form of plastic work. Using laser shock forming, metal sheet forming is realized without mould and the dimensions of the obtained shape are determined by the boundary condition. This technique can achieve fine forming at or beyond micrometer-level.

Paper Details

Date Published: 15 October 2001
PDF: 6 pages
Proc. SPIE 4601, Micromachining and Microfabrication Process Technology and Devices, (15 October 2001); doi: 10.1117/12.444728
Show Author Affiliations
Yongkang Zhang, Jiangsu Univ. (China)
Ming Zhou, Jiangsu Univ. (China)
Lan Cai, Jiangsu Univ. (China)
Youyi Xu, Jiangsu Univ. (China)

Published in SPIE Proceedings Vol. 4601:
Micromachining and Microfabrication Process Technology and Devices
Norman C. Tien; Qing-An Huang, Editor(s)

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