|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||Non-destructive Characterization Techniques for Identification of Metal Inclusions in Plastic-bonded Explosives
||Genevieve Watt, Adrian Losko, Amanda Higginbotham Duque, Sven Vogel, John Yeager
|On-Site Speaker (Planned)
Defects in plastic-bonded explosives (PBX) are often difficult to characterize but critical for understanding explosive performance, ease of detonation (“initiation”), and thermomechanical deformation and failure. Explosives tend to have a low melting point, poor thermal and/or vacuum stability, poor conductivity, and low fracture toughness. These properties, along with safety requirements for handling and testing, make them difficult to characterize using traditional techniques. Here, we compare several non-destructive imaging techniques in order to characterize sub-mm metal inclusions in PBX 9502. We compare commercially available benchtop x-ray tomography, with cold and thermal neutron tomography, including a newly developed energy-resolved neutron imaging capability. Conventional x-ray imaging provides the highest spatial resolution and rapid identification of metal inclusions in the low-Z PBX, whereas neutron imaging provides better compositional identification and the ability to image the PBX within typical metal-based assemblies. The implications for analyzing PBX properties and performance will be discussed.
||Planned: None Selected