| Autor: |
Gray III, G. T., Hull, L. M., Livescu, V., Briggs, M. E., Meyer, R. K. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2017, Vol. 1793 Issue 1, p1-5, 5p, 1 Color Photograph, 2 Diagrams, 1 Chart, 1 Graph |
| Abstrakt: |
Widespread research since 1950 has provided a wealth of experimental data concerning shock hardening and the spallation response of materials subjected to square-topped shock-wave loading profiles. Sweeping-wave loading is a significantly different loading history than that achieved by a square-topped impulse or 1-D HE-driven plane-wave shock in terms of the evolving spherical and shear stresses applied. Sweeping-wave loading in a flat-plate geometry was previously observed to: a) yield a lower spall strength than previously documented for 1-D supported-shock-wave loading, b) exhibit increased shock hardening as a function of increasing obliquity, and c) lead to an increased incidence of deformation twin formation with increasing shock obliquity (1). The current sweeping-wave loading of a 10 cm radius curved Ta plate is observed to: a) lead to an increase in the shear stress as a function of increasing obliquity, and b) display a more developed level of damage evolution, extensive voids and coalescence, and lower spall strength with obliquity in the curved plate than in the flat-plate sweeping-detonation wave loading for an equivalent HE loading. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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