On the inelastic shock profile in alumina

Autor:	H. Marom, N. Murray, Dov Sherman, Z. Rosenberg
Rok vydání:	2002
Předmět:	Vibration Amplitude Planar Materials science visual_art visual_art.visual_art_medium Jump General Physics and Astronomy Constant speed Tile Mechanics Manganin Shock (mechanics)
Zdroj:	Journal of Applied Physics. 92:5886-5891
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1512684
Popis:	The dynamic response of alumina specimens, above their elastic limits, was studied using planar impact experiments with different tile thickness. Stress-time measurements with manganin gauges show a steady spreading of the inelastic portion of the shock profile with increasing tile thickness. Such behavior is typical of elastic waves moving at a constant speed that depends on their amplitude. This finding supports recent interpretations of the failure ramp, by which the elastic response of these materials should be extended to higher stresses than the initial jump. However, further analysis of these profiles raises some questions regarding the exact determination of the Hugoniot elastic limit.
Databáze:	OpenAIRE
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