Abstract
The cylinder expansion (CYLEX) test is commonly used to describe the adiabatic expansion of the detonation products and calibrate the equation of state (EOS) of detonation products. A CYLEX test method analogous to the T-20 (pre-set position and record the time of arrival) methodology was developed utilizing a set of probes with radial displacement difference and a high-speed pulse timer to record the radial expansion displacement of the cylinder wall. Two CYLEX tests for Dihydroxylammonium 5,5'-bitetrazole-1,1'-dioxide (TKX-50)-based explosives and two for 2, 4, 6-trinitrotoluene (TNT) were conducted using the CYLEX test method developed, and further Jones-Wilkins-Lee (JWL) EOS parameters of detonation products were determined using the BP neural network and genetic algorithm (BP-GA) program. Besides, the JWL EOS parameters obtained were numerically validated by performing the simulations of the CYLEX test, where the simulation results were consistent with the experimental data.