Investigation of detonation chains. Part 5: Shockwave calibration of the systems PWL (Plane Wave Lens)  plexiglass and tetrylplexiglass
Abstract
A method of determining the pressure distribution of a shock wave which is generated in an inert material by a detonating explosive, is described. A shadowgraph was made of the shock wave which travels through the inert medium. In the streak camera record thus obtained, a line indicates the distance covered by the shock wave in time. After measuring a number of points of this line, a function can be fitted to these points in such a way as to represent the best possible approximation of the original line in the streak record. Differentiation of this function yields the shock wave velocity as a function of the distance covered. The shock wave pressure can be computed from this. The above procedure was performed for the PWL (plane wave lens)plexiglass and tetrylplexiglass systems.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 November 1975
 Bibcode:
 1975STIN...7721381S
 Keywords:

 Detonation Waves;
 Pressure Distribution;
 Shock Wave Profiles;
 Velocity Distribution;
 Calibrating;
 Curve Fitting;
 High Speed Cameras;
 Lenses;
 Numerical Analysis;
 Plane Waves;
 Polymethyl Methacrylate;
 Shadowgraph Photography;
 Tetryl;
 Time Functions;
 Fluid Mechanics and Heat Transfer