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Energy Release Characteristics of Impact-Initiated Energetic Materials

Published online by Cambridge University Press:  26 February 2011

Richard Ames
Richard Ames*
Affiliation:
richard.ames1@navy.mil, Naval Surface Warfare Center, Dahlgren Division, G22, Code G22 Building 221, 17320 Dahlgren Rd, Dahlgren, VA, 22448, United States
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Abstract

Impact-initiated energetic materials are a class of energetic materials that are formulated to release energy under highly dynamic loads. Under quasi-static or static loads, however, the materials are intended to be inert and carry a material classification of 4.1 flammable solid. In general, these materials are formed by introducing metal powders into a polymer binder but a number of binderless varieties exist (primarily pressed/sintered intermetallics and thermites). Most of the materials are sufficiently insensitive so as not to produce a self-sustaining reaction; as such, they require the mechanical work of a high-strain-rate plastic deformation process to provide the energy required to drive the reaction. Traditional initiation techniques such as exploding bridge wires or flame initiation are not sufficient to maintain a reaction in this class of materials. This paper presents a brief overview of the energy release characteristics of this class of materials, including a discussion of the material formulations, initiation phenomena, and a discussion of the manner in which the material properties affect the energy release characteristics.

Keywords

energetic materialreactivitypolymer
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 896: Symposium H – Multifunctional Energetic Materials , 2005 , 0896-H03-08
Copyright
Copyright © Materials Research Society 2006

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References

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