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- W250202469 abstract "The samples of as-received Ti-6%A1-4%V alloys of 3 different oxygen contents ranging from 0.1% to 0.24% have been tested in about 50 shock-wave experiments. In the experiments performed the Hugoniot elastic limit, the spall strength, and the critical diameter for the spall element separation were measured. The peak shock stress was varied from 4 to 75 GPa, the load duration from 10(exp -7) s to 10(exp -5) s. The VISAR free-surface velocity measurements show a growth by 20% in the Hugoniot elastic limit of alloys with increasing the oxygen content from 0.105 up to 0.24%. The measurements have not revealed a notable variations in the spall strength magnitudes as a function of the oxygen content. The spall strength grows by 10 to 20% when the load duration decreases by an order of magnitude. The peak stress in shock wave preceding to spall fracture does not influence the spall strength value. The computer simulation of spall experiments was performed with the 1-D Lagrangian code. The description of the elastic-plastic properties is based on the structural Marzing model. Fracture was calculated using the empirical constitutive relationship which provides quite reasonable description of the spall process." @default.
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- W250202469 date "1998-09-01" @default.
- W250202469 modified "2023-09-27" @default.
- W250202469 title "Edge effects at spall fracture for titanium alloys of varying oxygen content. Final report, 18 September 1997--1 July 1998" @default.
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