Accession Number : AD1049399


Title :   Influence of Test Section Geometry on the Blast Environment in an Explosively Driven Conical Shock Tube


Descriptive Note : Technical Report,01 Jan 2017,31 Jul 2017


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


Personal Author(s) : Stewart,Joel B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1049399.pdf


Report Date : 30 Mar 2018


Pagination or Media Count : 34


Abstract : This report details experimental data gathered on incident overpressures and the corresponding impulses obtained in the test section of an explosively driven 10deg (full angle) conical shock tube. Due to the shock tubes steel walls approximating the boundary conditions seen by a spherical sector cut out of a detonating sphere of energetic material, a 5.3-g pentolite shock tube driver charge produces peak overpressures corresponding to a free-field detonation from an 816-g sphere of pentolite. The 4 test section geometries investigated in this report (open air, cylindrical, 10 inscribed square frustum, and 10 circumscribed square frustum) provide a variety of different time histories for the incident overpressures and impulses, with a circumscribed square frustum yielding the best approximation of the mid-field blast environment produced by a free-field detonation.


Descriptors :   shock tubes , pentolite , overpressure , energetic materials , detonations , blast


Subject Categories : Test Facilities, Equipment and Methods
      Ammunition and Explosives


Distribution Statement : APPROVED FOR PUBLIC RELEASE