Explosive acceleration of fluoropolymer-based reactive material fragments
conference paper
Energetic materials that contain metal and metal oxide powders, fluoropolymers and fillings are classed as reactive materials. Fragments from these materials may release significant amounts of energy upon impact when surviving mechanical loads during acceleration and flight, resulting in intensified damage effects to the target. Composites were prepared into reactive fragments using alternative fabrication techniques to achieve functional fragments that have the potential to be scaled up. The fragment preparation as well as the successful projection of reactive material fragments from a 0.5” calibre gun on a target plate assembly and the registration of their reaction by high speed video was presented in [1].
Here results from the explosive acceleration of reactive fragments are presented. Two set-ups were designed aiming for fragment velocities of 1.0 and 1.5 km/s, with the reactive fragments encapsulated in a polymeric layer. The 1.0 km/s impact velocity was chosen for comparison to the previous gun launch projected fragments. The mechanical loads during acceleration by the detonating explosive, however, will be larger. With each experiment the effect of the reactive material fragments impact on a target plate assembly can be compared to the impact of inert aluminium fragments. It was found that some of the fragments were able to reach the target plate assembly, penetrate the first aluminium plate and react upon impact at the second plate.
Here results from the explosive acceleration of reactive fragments are presented. Two set-ups were designed aiming for fragment velocities of 1.0 and 1.5 km/s, with the reactive fragments encapsulated in a polymeric layer. The 1.0 km/s impact velocity was chosen for comparison to the previous gun launch projected fragments. The mechanical loads during acceleration by the detonating explosive, however, will be larger. With each experiment the effect of the reactive material fragments impact on a target plate assembly can be compared to the impact of inert aluminium fragments. It was found that some of the fragments were able to reach the target plate assembly, penetrate the first aluminium plate and react upon impact at the second plate.
TNO Identifier
996255
Source title
Energetic Materials Technolgy Working Group EMTWG, Oslo, Norway, 13-16 May 2024
Collation
10 p.