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Accession Number:

AD1049399

Title:

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

Author(s):

• Stewart, Joel B.

Author Organization(s):

• US Army Research Laboratory

Report Date:

2018-03-30

Abstract:

This report details experimental data gathered on incident overpressures and the corresponding impulses obtained in the test section of an explosively driven 10degxE; (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, 10xE; inscribed square frustum, and 10xE; 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.

Document Type:

Conference:

Journal:

Pages:

34

File Size:

17.06MB

Contracts:

Grants:

Descriptors:

• energetic materials
• experimental data
• free field
• military research
• shock tubes
• materials
• boundaries
• detonations
• environment
• geometry
• metadata
• overpressure
• pentolite
• explosives
• materials laboratories
• buildings and structures
• coding
• identities
• laboratory procedures
• research facilities

Identifiers:

• air blast
• air shock
• mid-field blast environment
• explosively driven shock tube

SubjectCategory:

• Test Equipment, Research Facilities and Reprography
• Ordnance

Communities of Interest:

• Weapons Technologies

Distribution Statement:

Approved For Public Release

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