R. Meyer J. Köhler A. Homburg Explosives

279 Sensitivity
360 mm wide by 2 mm thick. While components using the SCB igniter
function at one-tenth the energy of conventional bridgewire devices,
they have been shown to be explosively safe meeting both no-fire and
electrostatic discharge (ESD) requirements. SCB chips are processed
using standard semiconductor fabrication techniques; consequently,
circuitry on the same die can be incorporated to provide a smart
igniter that can be used in architectures to sense environments, provide
precise delays, or respond to coded signals, to name a few
possibilities. SCB devices can be used for commercial, military, and
government applications that range from sophisticated intelligent devices
to rock blasting. R.W. Bickes, Jr. and A.C. Schwarz at Sandia
National Laboratories patented the SCB in 1987; Sandia patents for
other semiconductor bridges and devices have also been issued.
Semigelatin Dynamites
Semigelatin dynamites are so named because of their consistency.
These so-called semigelatins contain ammonium nitrate and wood
meal as their main components, and also 10–14% of a weakly gelatinized
nitroglycerine.
Semtex
Trade name of a plastic explosive (W Plastic Explosives) from the
Czech firm Explosia, Pardubice-Semtin.
Semtex consists of W Pentaerythritol Tetranitrate and styrene-butadiene
copolymer as a plasticizer.
detonation rate: 5000 m/s
oxygen balance: – 44.0%
critical diameter: 15 mm
Sensitivity
Empfindlichkeit; sensibilité
The sensitivity of an explosive to heat, mechanical stress, shock,
impact, friction impact and detonation impact (initiability) determine its
handling safety and its application potential.
All explosives are, intrinsically, sensitive to impact and shock. The
introduction of additives – oil, paraffin etc. – may diminish the sensitivity
to mechanical stress.
Testing methods ensuring uniform evaluation were developed accordingly.
Some of them are included in the Railroad Traffic Regulations