Blasting cap, also called Detonator, device that initiates the detonation of a charge of a high explosive by subjecting it to percussion by a shock wave.
The HDP would have a smooth barrel over 100 m long, along which a 97 kg finned shell (known as the Sprenggranate 4481) would be accelerated by numerous small low-pressure detonations from charges in branches off the barrel, each fired electrically in sequence.
A fully coupled detonation with a charge weight of 25.0 kg was also exploded to study the coupling effect.
A strong correlation was observed between the heat of detonation with the charge and 15N NMR chemical shift on the nitro group in nitramines and nitro paraffins.
The simplified Johnson-Cook material model, the JWL equation of state, and the ideal gas equation of state were employed for modeling the pipe material behavior, charge detonation, and air, respectively.
The external and internal breach parameters of the concrete panels were evaluated by measuring the diameter and depth of the ejection crater, spalling crater as well as the diameter of the breached hole created by the contact charge detonation.
Many of them operate in a two stage detonation – the first charge destroys any armour, while the second kills the contents.
In a small detonation chamber, the charges of RDXph/Al foil (RDXph/Alf) produced even higher experimental maximum peak pressure (Δpmax) than the charges that contained Al powder (Alp).
Darwin even designed a mechanical bird whose wings were to be flapped by the detonation of small charges of gunpowder.
The detonation of explosive charges, coupled with the infusion of high-pressure fluids, fractures the shale, allowing the gas to bubble up to the surface.
