Accession Number : AD0769350

Title :   Experimental Study of Cavity Dynamics and Wave Propagation.

Descriptive Note : Final rept. 15 Mar 72-30 Jun 73,

Corporate Author : TRW SYSTEMS GROUP REDONDO BEACH CALIF SPACE VEHICLES DIV

Personal Author(s) : Tomren,D. R. ; O'Keefe,J. D.

Report Date : 23 OCT 1973

Pagination or Media Count : 77

Abstract : Pulsed laser transmission holography (single exposure, double exposure and differential exposure) has successfully recorded small scale underwater detonations. Moire techniques with grids were used to supplement the holographic techniques. Holographic data were used to yield pressure distribution behind shock fronts. In addition, a limited number of experiments were also performed to study the interaction of shocks with free surface and bottom boundaries. Holographic techniques provide a clear visualization in three dimensions of the nature of the interactions of the shock wave with varying bottom conditions and can be used to obtain quantitative data pertaining to shock and acoustic waves from interactions with boundaries. (Author)

Descriptors :   (*Underwater explosions, Wave propagation), Holography, Lasers, Moire effects, Shock waves, Acoustic waves, Explosion bubbles, Experimental data, Interferometers

Subject Categories : Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE