Explosive Output Characteristics of Mild Detonating Fuse

摘要

VISAR measurements of particle velocities in aluminized polymethylmethacrylate (PMMA) windows have been used to study the amplitude and width of pressure pulses generated by the function of mild detonating fuse (MDF). Samples tested included several different core loads of hexanitrostilbene (HNS) or hexanitroazobenzene (HNAB) in an aluminum sheath and pentaerythritol tetranitrate (PETN) in a lead sheath. Explosive density was found to be the major factor determining the peak pressure transferred to the window. Explosive core diameter primarily affected the width of the pressure pulse. However, some evidence for a small diameter effect on peak pressure was also noted. Geometry-related structure on the pressure pulse appeared consistently and contributed to the overall pulse width, especially for small diameter explosive columns. Two grain per food core loads of hydrocompacted HNS and HNAB MDF are of interest for component applications. These two materials contain similar explosive densities and it was found that both generate nearly the same peak pressure in PMMA. 8 refs., 8 figs., 4 tabs. (ERA citation 14:011695)