overpressure


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overpressure

[′ō·vər‚presh·ər]
(fluid mechanics)
The transient pressure, usually expressed in pounds per square inch, exceeding existing atmospheric pressure and manifested in the blast wave from an explosion.
References in periodicals archive ?
The company has not yet stated if it will compensate residents of the village for damages or possible injuries in case of an overpressure event.
Finally, it is critical to understand the structural integrity of the underground facility and overpressure potential.
Samples were exposed to an average of 18.37 psi (127 kPa) peak overpressure, which corresponds to mild severity injury in preclinical rodent models [14, 15].
Stemming at a mine is of utmost importance as it not only effects the air overpressure, but it also has major a major influence on the maximum effective burden, shovel and excavator muck times, fragmentation size and variability, ground vibration, and almost every other operation.
Upon subsequent arrival of higher overpressure fronts, inelastic waves propagate at velocities smaller than P-wave velocity.
This can generate significant air overpressure affecting nearby structures and will produce some flyrock around the boulder, breaking it into a variety of sizes.
VCEs are very dangerous because they tend to have a high peak overpressure for a relatively long duration and hence a very high impulse.
The empirical and semiempirical correlations derived experimentally have been developed to calculate the maximum overpressure inside a vessel during gas explosion processes.
The shock wave propagation characteristics, the distribution law of the overpressure peak on the inner surface, the maximum dynamic response position, and the reticulated shell explosion venting phenomena of the scale models were studied.
The wall was subjected to a) physical fire tests, withstanding a temperature of 1,150[degrees] C for more than 60 minutes; and, b) impact tests of a direct overpressure wave of 1.1 bars for 80 milliseconds.
In normal blasting operations, air overpressure is not a large concern and regulations are rarely exceeded.
Established over 50 years ago, the business is one of the worlds largest suppliers of vacuum and overpressure solutions.