IGNITE (Ignition and Growth Novel Initiation Threshold Experiments)
Abstract
Recent research has shown a connection between the microstructure of an energetic material and its critical threshold for reaction when subjected to mechanical damage. To date this has been demonstrated using separate materials that have been differently formulated to possess varying microstructures in their pristine state. Typically, the greater the porosity, the lesser the intensity of damage required to cause reaction. The question arises as to what will happen to such critical thresholds when the microstructure of an initially pristine polymer bonded explosive (PBX) is disrupted; for example, by the evolution of mechanically induced damage. Using techniques developed at the University of Cambridge, quantifiable damage will be inflicted as function of strain-rate, and reaction thresholds will be investigated in terms of ignition by rapid compression and shock. These data will provide critical validation of such initiatives as the Microstructure Informed Surrogate Surface for Energy Localization model concurrently being developed under MURI FA9550-19-1-0318: Integrating multiscale modeling and experiments to develop a meso-informed predictive capability for explosives safety and performance.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 21, 2022
- Source ID
- FA86552217147XX0
Entities
People
- David Williamson
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Cambridge