Abstract
A number of models have been proposed to calculate overpressure and
impulse from accidental industrial explosions. When the blast is
produced by explosives, pyrotechnics or unstable substances, the
TNT equivalent model is widely used. From the curves given by this
model, data are fitted to obtain equations showing the relationship
between overpressure, impulse and distance. These equations, referred
to here as characteristic curves, can be fitted by means of power
equations, which depend on the TNT equivalent mass. Characteristic
curves allow determination of overpressure and impulse at each distance.
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