Unreacted Shock and Detonation Response of EXP-A Measured with Embedded Electromagnetic Gauges
Abstract
Embedded electromagnetic (EM) particle velocity gauges have been used to characterize the unreacted shock and detonation response of EXP-A, an RDX-based explosive material under development by the Air Force. To study the shock and detonation response, a sustained 1D planar shock wave (greater than 2 mu(sec) pulse duration) was imparted into the EXP-A using gun launched flyer plates, achieving pressures up to 11.2 GPa. The embedded electromagnetic gauges recorded (in-situ) time-resolved particle velocity traces which were used to determine Hugoniot (unreacted shock velocity and pressure) and Pop-plot (shock-to-detonation distance/time) information. The Hugoniot for EXP-A is well-described by US=1.25 km/s + 3.32*uP, and the shock-to-detonation distance (XD) is best described by Log10(XD)=2.02-1.47*Log10(Pressure). Results from short pulse (tilde200-300 ns pulse duration) initiation experiments are also outlined and compared to the sustained pulse (greater than2 mu(sec)) results.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2020
- Accession Number
- AD1111278
Entities
People
- Benjamin Wilde
- Christopher Neel
- David Lacina
Organizations
- Air Force Research Laboratory
- University of Dayton