METHOD FOR TESTING PERSPECTIVE HIGH-ENERGY MATERIALS FOR SENSITIVITY TO MECHANICAL STRESS Russian patent published in 2023 - IPC F42D5/04 F42B35/00 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to devices and methods that ensure safety and can be used to test high-energy substances for sensitivity to mechanical stress. The method of testing high-energy substances for sensitivity to mechanical stress is that a high-energy substance is placed in a test layout and thermostated depending on the simulation of the conditions of the climatic zone. After temperature control, the layout is installed on a slipway with an armoured card. An armour-piercing incendiary bullet of 12.7 mm calibre is fired from an accelerating device mounted on a frame. The accelerating device is protected by an anti-ricochet gate. Fragments are collected. Each individual fragment is weighed and the average fragment mass is calculated using the following formula: М_AV = М₁ + М₂ + М₃ + …М_n/N_m, where M_AV is the average fragment mass, g; М₁ + М₂ + М₃ + …М_n is the sum of the masses of each individual fragment, g; N_m is the number of fragments (pcs). After that, according to the following formula, the E-criterion is determined, which falls into the ranges indicated below and determines the type of reaction: 1) 0<E<0,2 – combustion (type V); 2) 0,2<E<0,5 – deflagration (type IV); 3) 0,5<E<0,7 – explosive combustion (type III); 4) 0,7<E<0,9 – partial detonation (type II); 5) 0,9<E<1 – detonation (type I); E = (М_body-М_AV)/М_body, where E is the ranking criterion for determining the type of reaction; M_body is the mass of the mock-up body before testing, g; M_AV is the average weight of a fragment, g.

EFFECT: test of high-energy substances for sensitivity to mechanical stress, which provides for a visual and quantitative assessment.

1 cl, 14 dwg