Design of a Simple Blast Pressure Gauge Based on a Heterodyne Velocimetry Measuring Technique
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 .
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2016
- Accession Number
- AD1015984
Entities
People
- Charles L. Randow
- Chester A. Benjamin
- Corey E. Yonce
- Crist A Burns
- Gerald Schafer
- James A. Perrella
- James M Freburger
- Joshua M. Sturgill
- Kenneth W Dudeck
- Martin L Potter
- Michael B Zellner
- Robert Sr W Borys
- Robin Strickland
- Ronald Cantrell
- Seth T Halsey
- Steven W Alleyne
Organizations
- United States Army Research Laboratory