Science and Technology of Energetic Materials

Vol.66, No.1 (2005)


Characterizing shocks from explosives with an optical fiber gauge (*in Japanese)
Toshiharu Mizukaki and Kazuyoshi Takayama


The density distribution behind the spherical shock wave generated by a 500 μg Silver-Azide initiated by a small Nd:YAG laser irradiation, was visualized by digital phase-shift holographic interferometry (DPSHI) as improved double-exposure holographic interferometry, and was evaluated from the obtained fringe map. The numerical simulation as one-dimensional spherical problem was conducted by AUTODYN-2D, commercially distributed hydro code, and the results were compared with those of experimentally obtained. The results indicated that 500 μg Silver-Azide generates the spherical shock wave with 1.007 ±0.001 of incident Mach number and that the evaluation of the density distribution behind the spherical shock wave by DPSHI agrees with the numerical result calculated with AUTODYN-2D within 0.3 % error.

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