assessing explosives

Question 1

sensitivity to friction

Answer 1

explosive on sliding block
apply a known weight
observe any evidence of ignition

Question 2

sensitivity to sparks/ discharge

Answer 2

sample wound towards a discharge electrode
critical distance energy is released via a spark
ignition monitored

Question 3

sensitivity to impact

Answer 3

drop towers from increasing heights
new sample at every height
monitor ignition

Question 4

sensitivity to heat

Answer 4

sample in metal block, block heated
temperature of ignition monitored

Question 5

Abel test

Answer 5

measures the decomposition of energetic materials into NOx gases
standardised paper used
white –> brown