DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
Mechanism of Electro-Static Discharge (ESD) Sensitivity of Reactive Powders and Its Mitigation
Final rept. 1 Sep 2007-28 Feb 2011
NEW JERSEY INST OF TECH NEWARK
Pagination or Media Count:
Electrostatic discharge ESD ignition of Mg, Al, and Ti powders is studied experimentally. Discharge energy is quantified by real time measurements of current and voltage ignition behavior of powders is studied optically. A fraction of ESD energy transferred to powder is determined for different experimental configurations. It is shown that powder heating by ESD is adequately described considering Joule energy produced by the ESD current. Powder heating occurs adiabatically. For titanium powders, particles struck by ESD fuse together readily, reducing powder resistance and respectively reducing its ignition sensitivity. The thickness of the powder layer struck by ESD affects the ignition behavior of powders substantially. For very thin powder layers, particle fragmentation is consistently observed.
APPROVED FOR PUBLIC RELEASE