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Proceedings Paper

Ductile spallation of aluminum under shock loading induced by high-power laser pulses
Author(s): Shiming Zhuang; Chunyan Wang; Cangli Liu; Chengwei Sun
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Paper Abstract

The dynamic fracture of pure aluminum targets with thickness in the range of 100 to approximately 800 micrometers has been investigated experimentally under shock loading induced by Nd:glass laser pulses of 4 ns FWHM. The experimental results indicate that the spallation of aluminum at ultra high strain rate up to 107s-1 is still a ductile fracture in the way of voids' nucleation, growth, and coalescence in interior of the material, but the damage behavior is somewhat different from that obtained by ordinary loading methods at lower strain rate. The function of spall thickness versus the target thickness is nearly linear under the conditions of this experiment.

Paper Details

Date Published: 11 January 1993
PDF: 9 pages
Proc. SPIE 1761, Damage to Space Optics, and Properties and Characteristics of Optical Glass, (11 January 1993); doi: 10.1117/12.138940
Show Author Affiliations
Shiming Zhuang, Southwest Institute of Fluid Physics (China)
Chunyan Wang, Southwest Institute of Fluid Physics (China)
Cangli Liu, Southwest Institute of Fluid Physics (China)
Chengwei Sun, Southwest Institute of Fluid Physics (China)


Published in SPIE Proceedings Vol. 1761:
Damage to Space Optics, and Properties and Characteristics of Optical Glass
James B. Breckinridge; Alexander J. Marker, Editor(s)

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