Novel technique of laser shocking fine partial forming of metal sheet

Yongkang Zhang; Ming Zhou; Lan Cai; Youyi Xu

doi:10.1117/12.444728

15 October 2001 Study of the novel technique of laser shocking fine partial forming of metal sheet

Yongkang Zhang, Ming Zhou, Lan Cai, Youyi Xu

Proceedings Volume 4601, Micromachining and Microfabrication Process Technology and Devices; (2001) https://doi.org/10.1117/12.444728
Event: International Symposium on Optoelectonics and Microelectronics, 2001, Nanjing, China

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.

Citation Download Citation

Yongkang Zhang, Ming Zhou, Lan Cai, and Youyi Xu "Study of the novel technique of laser shocking fine partial forming of metal sheet", Proc. SPIE 4601, Micromachining and Microfabrication Process Technology and Devices, (15 October 2001); https://doi.org/10.1117/12.444728

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