Ductile spallation of aluminum under shock loading induced by high-power laser pulses

Shiming Zhuang; Chunyan Wang; Cangli Liu; Chengwei Sun

doi:10.1117/12.138940

11 January 1993 Ductile spallation of aluminum under shock loading induced by high-power laser pulses

Shiming Zhuang, Chunyan Wang, Cangli Liu, Chengwei Sun

Proceedings Volume 1761, Damage to Space Optics, and Properties and Characteristics of Optical Glass; (1993) https://doi.org/10.1117/12.138940
Event: San Diego '92, 1992, San Diego, CA, United States

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.

Citation Download Citation

Shiming Zhuang, Chunyan Wang, Cangli Liu, and Chengwei Sun "Ductile spallation of aluminum under shock loading induced by high-power laser pulses", Proc. SPIE 1761, Damage to Space Optics, and Properties and Characteristics of Optical Glass, (11 January 1993); https://doi.org/10.1117/12.138940

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