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Robert J. Spear

Publications -  16
Citations -  57

Robert J. Spear is an academic researcher. The author has contributed to research in topics: Shock sensitivity & Tetryl. The author has an hindex of 5, co-authored 16 publications receiving 54 citations.

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Reversal of particle size/shock sensitivity relationship at small particle size for pressed heterogeneous explosives under sustained shock loading

TL;DR: In this paper, a series of RDX samples of narrow particle size range were subjected to sustained shock (gap test), and the sensitivity increased over the series 250 < 138 < 100.
Journal ArticleDOI

A miniature ionization probe technique using a multilayer circuit board for the study of explosive phenomena in primary and secondary explosives

TL;DR: In this paper, a miniature ionization probe technique using a multilayer circuit board has been developed, and accurate, reproducible detonation velocity measurements have been obtained for the primary explosives service lead azide RD1343, silver azide and mercuric 5-nitrotetrazole, and the secondary explosive tetryl.

Recommended Replacements for Tetryl in Australian Production Fuzes and Related Ordnance

TL;DR: The final phase of study into RDX-based formulations suitable for replacement of tetryl in Australian ordnance is described in this paper, where three formulations using readily available AC629 emulsifiable polyethylene wax and processible on Australian production equipment are identified.

RDX-Polyethylene Wax Formulations as Potential Replacements for Tetryl in Fuze Leads, Boosters and Magazines

TL;DR: In this paper, a series of RDX/AC629 polyethylene wax formulations from 99.60:0.40 to 93.58:6.37 were prepared via the emulsification technique and assessed for powder impact sensitivity, shock sensitivity and vacuum thermal stability.

A Comparative Assessment of US and UK Explosives Qualified as Replacements for Tetryl

TL;DR: In this paper, three UK and seven US production formulations qualified as replacements for tetryl in fuzes have been obtained through TTCP WTP-1 through characterisation of powders -rotter impact sensitiveness, temperature of ignition, vacuum thermal stability and electrostatic spark sensitivity - and of pressed charges - shock sensitivity.