HOT SPOTS AND EXPLOSIVES INITIATION INVESTIGATIONS WITH HMX

Reason: Pending publication of some of the included work.

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HOT SPOTS AND EXPLOSIVES INITIATION INVESTIGATIONS WITH HMX

thesis
posted on 2023-01-24, 04:04 authored by Christian J Blum-sorensenChristian J Blum-sorensen

This dissertation, while sometimes broad in scope, attempts to tie together the author’s work with the goal of better understanding the phenomenon of explosives initiation at the mesoscale. Discussion of the need for such an investigation will be covered, including how mesoscale phenomena and the dominant theory of explosives initiation–hot spot theory–are intimately related. Furthermore, some difficulties in designing mesoscale experiments will be mentioned. Sample preparation–one of the more difficult tasks in this regime–will be covered, including single crystal growth, mechanical machining with a quasi-CNC machine, laser machining, and hacks to a tungsten wire saw for novel sample production. The author will go on to show work done in a quasi-static regime, at low strain rates, and at medium- high strain rates. These novel experiments start to show how pore collapse functions in single-crystal HMX. Additional work with thermophosphors, which may be relevant to future experiments, is also presented. New experimental diagnostics designed and constructed by the author are laid out for future reference, along with improvements to a gas gun apparatus.

Funding

US Department of Defense, Office of Naval Research, MURI contract number N00014- 16-1-2557, program managers: Chad Stoltz and Kenny Lipkowitz

DURIP Award No. FA9550-16-1- 0315 (Dr. Martin Schmidt, Program Officer) for purchasing the Shimadzu HPV-X2

DHS ALERT Fellowship

Air Force Office of Scientific Research under award number FA9550-20-1-0244 (Program Manager: Dr. Mitat Birkan).

Air Force Office of Scientific Research through Award No. FA9550-15-1-0102

History

Degree Type

Doctor of Philosophy

Department

Mechanical Engineering

Campus location

West Lafayette

Advisor/Supervisor/Committee Chair

Dr. Steven Son,

Additional Committee Member 2

Dr. Weinong Chen

Additional Committee Member 3

Dr. Alejandro Strachan

Additional Committee Member 4

Dr. Dana Dattelbaum

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