Acoustic diagnostics of «solid-state combustion» processes in organic crystal mixes

With the help of designed experimental device and measurement technique an emission of sound waves (acoustic emission) is discovered and registered during «solid-state combustion» in the mixes of organic crystals. The spektral-correlation analysis of the registered acoustic signals is offered as a new effective method of research of the combustion features caused by the moving of the reacting environment. The processes accompanying combustion are in-situ diagnosed and identified with its help; their space-time distribution in the reacting sample is detailed. The local reaction germs in a green mix and thermal cracking of organic crystals are found out. Dynamics of formation of bubbles and porous structure of products in the reaction front and during their cooling is studied. The moment of changing of chemical reaction mode is established. Correlation between the structure of synthesized condensed products of combustion and peculiarities of acoustic emission is shown. That fact causes principal possibility of acoustic certification of «solid-state combustion» products.