S. P. Sivapirakasam and M. Surianarayanan*
Abstract: Firework chemical mixtures are sensitive to thermal and mechanical stimuli and lead to many explosive incidents. Experimentally determined thermal and mechanical (impact and friction) sensitivity data of a flash composition mixture are subjected to statistical and graphical analysis in order to understand the mechanism of triggering accidents. The interrelationship study reveals that irrespective of the nature of stimuli, explosion is the final event and occurs due to a thermal mechanism. This study shows that under severe impact thermal stimuli can occur. If the thermal stimuli are equal to or greater than the activation energy of the composition then ignition of the flash composition will occur.
Keywords: flash composition, fireworks, mechanical and thermal sensitiveness, correlation analysis
Ref: JPyro, Issue 23, 2006, pp51-60
(J23_51)
© Journal of Pyrotechnics and CarnDu Ltd
