Thursday  |  Salon 10  |  09:40 AM–10:00 AM

#15709, Behavior of Cast and Additively Manufactured Mock Polymer Bonded Explosives at Intermediate Strain Rates

There is a lack of in-situ dynamic experimental characterization of the behavior of polymer bonded explosives, particularly in the intermediate and high rate regimes. As the field of additive manufacturing advances into the energetics community it is vital we characterize the performance and behavior of these materials under in-situ, dynamic testing environments. Samples of mock polymer bonded explosives containing 88 wt% solids loading of glass particulates bound in a Sylgard 184 matrix were produced using traditional casting methods and via Vibration Assisted Printing (VAP). Samples were characterized for strength and deformation behavior at various intermediate strain rates using a Split Hopkinson (Kolsky) Bar Apparatus. Results showed printed materials' deformation was governed by porosity inherent to the printing process, causing preliminary failures.

Kerry-Ann Stirrup   Purdue University
Stephanie Andress   Purdue University
Jeffery Rhoads   Purdue Universty
Weinong Chen   Purdue University
Timothy Jenkins   DEVCOM United States Army Research Laboratory