Modern browsers support html and css better now, as such the app that died on the apple store can now live again. The scaled distance is then read for the “test explosive pressure” and the “tnt equivalent of test explosive”. It provides data for incident pressure, reflected pressure, incident impulse, reflected impulse, duration of positive pressure phase, time of arrival of the shock wave and shock front.
This report contains a presentation of the air blast parameters, peak overpressure, arrival time, positive duration and impulse versus scaled distances. Curves presenting overpressure versus radial distance (measured and theoretical) have been available for many years for spherical charges detonated in free air. The required standoff distance to achieve an arriving overpressure of 1.2 psi can be calculated using the equation below.
For mamy years there has been a need for a reliable aurface burnt peak ovcrpr,3urc' versus distance curve extending from 2000 psi to.01 psi. In the current dod explosives safety standard 1 , the effects expected at a particular scaled distance (range/charge weight 1/3 ) are tied to a pressure level. This dimensionless parameter allows comparison of blast effects from different charge weights. Tnt equivalency for scaled impulse
This pressure level is determined from the 1966 kingery hemispherical tnt compilation. It is a simple calculator of the scaled distance vibration formula in as2187.2 appendix j of the australian standards. This however is not the case for scaled impulse. Scaled distance showing the line of constant pressure.
Ai generated definition based on: