A5073890155- Energetic Materials and Combustion
- High-Velocity Impact and Material Behavior
- Mechanical Behavior of Composites
- Rocket and propulsion systems research
- Polymer crystallization and properties
- Fluid Dynamics Simulations and Interactions
PLA Rocket Force University of Engineering
2022-2024
Xi'an High Tech University
2022
This study aims to investigate the in-situ microscopic damage evolution mechanism of hydroxyl-terminated polybutadiene (HTPB) propellant bonding interface under multi-angle tensile shear conditions as well characterize effects on macroscopic failure modes. To this end, micro-specimens HTPB with different loading angles are scanned and reconstructed using micro-computed tomography (CT), data sizes, shapes, volume fractions particles inclusions inside obtained. The results indicate existence a...
An effective biaxial tension and compression test method is proposed based on the shortcomings of current research for mechanical properties solid propellants under complex stress states. The equal proportion HTPB (Hydroxyl-terminated polybutadiene) NEPE (NitrateEster Plasticized Polyether) performed at different rates while room temperature, damage morphology tension–compression zone analyzed using micro-CT. results show that failure mode propellant loading similar to uniaxial tension....
Abstract In order to study the mechanical behavior of solid rocket motor charge bonding interface under uniaxial tensile loading, HTPB propellant/liner/insulator during process was scanned and reconstructed based on micro‐CT in‐situ variation porosity debonding rate with strain analyzed. A damage‐containing constitutive model evolution meso‐characteristic parameters established for bonded interfacial components. The experimental analysis shows that initial defects have a great influence...