PRELIMINARY RESULTS ON THE PHYSICAL PROPERTIES OF AQUEOUS FOAMS AND THEIR BLAST ATTENUATING CHARACTERISTICS

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Authors
  1. Winfield, F.H.
  2. Hill, D.A.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN)
Abstract
Using commercial concentrates for detergent based (high expansion) foams, the physical properties of density (.4 + or - .2 lb./cubic feet), subsidence rate (2-5 ft./hr.), drainage time (10-25 min), ball penetration rate (1-4 ft/min) and shearing torque (10-25 in.-oz.) were measured. The shock front in foam showed a decrease in the damage-producing properties of peak overpressure (reduced X20) and positive impulse (reduced X4). An increase was recorded in shock front time of arrival (X2-3), rise time (1 ms. vs 1 mu s.) and positive duration (X3). The project was terminated before the correlation between physical and blast attenuation properties could be studied.
Report Number
TN-389 —
Date of publication
15 Aug 1977
Number of Pages
41
DSTKIM No
77-04160
CANDIS No
100840
Format(s):
Hardcopy;Originator's fiche received by DSIS;Document Image stored on Optical Disk

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