Accession Number : AD1015984

Title :   Design of a Simple Blast Pressure Gauge Based on a Heterodyne Velocimetry Measuring Technique

Descriptive Note : Technical Report,01 Oct 2015,30 Sep 2016

Corporate Author : US Army Research Laboratory Aberdeen Proving Ground, United States

Personal Author(s) : Zellner, Michael B ; Randow,Charles L ; Cantrell,Ronald ; Yonce,Corey E ; Strickland,Robin ; Perrella,James A ; Sturgill,Joshua M ; Schafer,Gerald ; Potter,Martin L ; Burns,Crist A ; Alleyne,Steven W ; Freburger,James M ; Halsey,Seth T ; Borys,Robert Sr W ; Dudeck,Kenneth W ; Benjamin,Chester A

Full Text :

Report Date : 01 Aug 2016

Pagination or Media Count : 24

Abstract : This report describes the construction, functionality, and optimization of a Photonic Doppler Velocimetry- (PDV-) based disposable blast pressure gauge. The gauge works on the principle that a blast wave propagating through a medium such as air, incident normal to a nondeformable disk, will accelerate the disk proportional to the difference in the pressure fields established at its incident and rear surfaces. To accurately assess these pressures, one can employ a computational method bounded by the experimentally measured acceleration of the disk within the gauge (Peng W, Zang Z, Gogos G, Gazonas G. Fluid structure interactions for blast wave mitigation. J Appl Mech. 2011;78:031016-1). The gauge was deployed in an experiment during which the blast pressure was measured from detonation of 114 g of Primasheet 1000 high explosive. The gauge reported similar results to continuum simulations using Velodyne continuum mechanics code; however, it suggests that Velodyne underpredicts the puck acceleration, and therefore the magnitude of the blast pressure front, by approximately 17 .

Descriptors :   blast , Flyer plates , OVERPRESSURE , simulations , high explosives , detonations , Velocity , computational science

Distribution Statement : APPROVED FOR PUBLIC RELEASE