Introduction
The prediction of FI stimulus response is a challenging problem, to which many different methods for solution have
been posed. These methods include the direct numerical estimation of initiation via an empirical model, such as the Ignition and
Growth (I&G) Model, estimation of peak values of individual state variables, and peak values of a combination of state
variables. The direct calculation method tends to be expensive computationally, and requires a complete characterization of the
explosive fill in order to be physical. [2] One of the combination of state variable approaches is the use of the Hugh James
Criterion, which is a linear combination of energy fluence and specific kinetic energy, where energy fluence can be considered
the work performed on an arbitrary surface within the explosive and specific kinetic energy represents the kinetic energy
imparted to the explosive per unit mass.