Precursor decay in 1060 aluminum
- 1 October 1975
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 46 (10) , 4474-4478
- https://doi.org/10.1063/1.321423
Abstract
Pressure profile measurements for shock waves in 1060‐0 aluminum show a decaying elastic precursor. Its amplitude diminishes from 1.06 kbar at a propagation distance of 1.38 mm to 0.53 kbar at 9.68 mm. Combining these precursor amplitudes with earlier measurements by others yields a curve of amplitude vs distance which runs from 1.38 to 25 mm. Decay rates obtained from this curve yield values of dislocation density 3–80 times greater than those inferred from etch‐pit counts on polished surfaces. Rise times in the elastic precursor are greater at large distances than at small, suggesting effects of viscosity.This publication has 11 references indexed in Scilit:
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