Thermo-Electro-Mechanical Peridynamics Simulations of Impact Sensing at the Mesoscale in Energetic Materials |
An in-house Peridynamics code with thermo-electro-mechanical coupling has been developed to demonstrate strain and damage sensing at the mesoscale in energetic materials. The mesoscale representations are taken from micro-CT images and consist of energetic grains embedded in a piezoresistive nanocomposite binder. Electrodes are placed along the edges to monitor changes in resistance associated with a compression wave and the damage that follows from a low velocity (up 50 m/s) impact event. Results demonstrate an ability to sense the approaching compression wave and observe a transition from strain sensing to damage sensing. |