Investigating correlations between explosive impact sensitivity and mechanical properties using nanoindentation

Handling sensitivity is the first property that must be evaluated in order to work safely with explosive samples, most commonly evaluated using drop-weight impact sensitivity. In addition to safety, there is a longstanding scientific interest in the explosives community to connect, if possible, chem...

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Bibliographic Details
Main Authors: Burch, Alexandra C., Grennan, Hugh P., Bahr, David F., Yeager, John D., Tappan, Bryce C., Marrs, Frank W., Cawkwell, Marc J., Manner, Virginia W.
Format: Conference Proceeding
Language:English
Subjects:
Explosive impact tests
Mechanical analysis
Mechanical properties
Modulus of elasticity
Nanoindentation
Single crystals
Online Access:Get full text
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Summary:Handling sensitivity is the first property that must be evaluated in order to work safely with explosive samples, most commonly evaluated using drop-weight impact sensitivity. In addition to safety, there is a longstanding scientific interest in the explosives community to connect, if possible, chemical, physical, and mechanical properties to impact sensitivity. Most mechanical characterization of explosives has historically been done on plastic-bonded composites containing conventional explosives, but recently nanoindentation has been used to probe the mechanical response of pure explosive single crystals. In this study, we employ nanoindentation techniques to measure hardness and elastic modulus of a variety of explosives in order to search for correlations to drop-weight impact sensitivity. Both primary and secondary explosives are studied, along with mechanical behavior and sensitivity trends.
ISSN:0094-243X
1551-7616
DOI:10.1063/12.0020416