Study on meso-damage evolution process of high-energy propellant based on MCT

Abstract

The complex microstructure of composite solid propellant makes the evolution of meso-damage very complicated during loading. It is always a hot issue to study the damage evolution law of propellant from the microscopic point of view.Based on the established tensile platform of MCT, the tensile test of high energy propellant specimens was carried out. The variation trend of internal porosity with the increase of tensile strain is obtained. It can be seen that during the drawing process, the internal porosity of high-energy propellant increases exponentially with the drawing rate.