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Combustion, Explosion and Shock Waves

2014 year, number 3

Optical Radiation from Shock-Compressed Epoxy with Glass Microspheres

S. A. Bordzilovskii, S. M. Karakhanov, V. V. Sil'vestrov
Lavrent'ev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences
Novosibirsk, 630090 Russia
Keywords: optical radiation, shock compression, microsphere, monolayer, viscoplastic deformation

Abstract

Hot-spot temperature in shock compression of a mixture of epoxy resins with glass hollow microspheres is estimated. The obtained hot-spot temperature of 3200 K at a shock pressure of 20 GPa significantly exceeds the temperature of shock-loaded homogeneous epoxy resin, which at this pressure is in the range of 1100–1400 K. The time characteristics of the radiation generated during viscoplastic compression of a monolayer of hollow microspheres in an epoxy matrix at a pressure of 9, 20, and 29 GPa were determined by an optical pyrometer. Experimental data are shown to be in good agreement with estimates based on the viscoplastic deformation model.