Small-scale tunnel test for blast performance

18th APS-SCCM; 24th AIRAPT

Felts, J.E.^1 ; Lee, R.J.^1

Naval Surface Warfare Center Indian Head EOD Technology Division Indian Head, MD

20640, United States^1

关键词: Compositional variation;    Initial energy;    Long tunnels;    Peak pressure;    Performance characteristics;    Point sources;    Relative performance;    Tunnel test;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/18/182011/pdf
DOI  :  10.1088/1742-6596/500/18/182011

来源: IOP

【 摘 要 】

The data reported here provide a validation of a small-scale tunnel test as a tool to guide the optimization of new explosives for blast performance in tunnels. The small-scale arrangement consisted of a 2-g booster and 10-g sample mounted at the closed end of a 127mm diameter by 4.6-m long steel tube with pressure transducers along its length. The three performance characteristics considered were peak pressure, initial energy release, and impulse. The relative performance from five explosives was compared to that from a 1.16-m diameter by 30-m long tunnel that used 2.27-kg samples. The peak pressure values didn't correlate between the tunnels. Partial impulse for the explosives did rank similarly. The initial energy release was determined from a one-dimensional point-source analysis, which nearly tracked with impulse suggesting additional energy released further down the tunnel for some explosives. This test is a viable tool for optimizing compositional variations for blast performance in target scenarios of similar geometry.