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The report describes a small scale gap test (SSGT) used at MRL for the assessment of shock sensitivity of high explosives. Details of the test assembly, procedure and analysis of results, along with results for a range of explosives and explosive compositions are presented. A specially designed explosive firing cell is also described. The MRL SSGT has proved to be a simple, convenient and relatively cheap method for the assessment of shock sensitivity. Results are reproducible and provide a good indication of relative shock sensitivity.
Papers presented in this publication cover special problems in the field of energetic materials, particularly detonation phenomena in solids and liquids. General subject areas include shock-to-detonation transition, time resolved chemistry, initiation modeling, deflagration-to-detonation transition, equation of state and equation of state and performance, composites and emulsions, and composites and emulsions/underwater explosives, reaction zone, detonation wave propagation, hot spots, detonation products, chemistry and compositions, and special initiation.
This book summarizes science and technology of a new generation of high-energy andinsensitive explosives. The objective is to provide professionals with comprehensiveinformation on the synthesis and the physicochemical and detonation properties ofthe explosives. Potential technologies applicable for treatment of contaminated wastestreams from manufacturing facilities and environmental matrices are also be included.This book provides the reader an insight into the depth and breadth of theoreticaland empirical models and experimental techniques currently being developed in thefield of energetic materials. It presents the latest research by DoD engineers andscientists, and some of DoD’s academic and industrial researcher partners. The topicsexplored and the simulations developed or modified for the purposes of energetics mayfind application in other closely related fields, such as the pharmaceutical industry.One of the key features of the book is the treatment of wastewaters generated duringmanufacturing of these energetic materials.
An analysis was performed of Small Gap Test (SSGT) sensitivity data using nonreactive shock Hugoniots, and a recently developed concept which relates sensitivity to porosity. The basic idea of the concept is that detonation is achieved, regardless of porosity, when a critical thermal energy is induced into the explosive by shock. This analysis supports the validity of this notion, both for TATB-like explosives, for which it was conceived, and for other explosive materials as well.