TY - GEN
T1 - Simulation and experimental studies of electrothermal behaviors of microwire initiators for fusing applications
AU - Jang, Seongjin
AU - Du, Sarah
AU - Pochiraju, Kishore
AU - Manoochehri, Souran
PY - 2010
Y1 - 2010
N2 - Microwire initiators enhance the output pressure and reduce the required input voltage for the explosives initiation in fusing applications due to large surface areas and high electrical and thermal conductivities. We investigated electrothermal behavior of Cu and Au microwires with diameters in the range of 25∼100 μm. Microwires with smaller diameter ignited quickly and required the lower input voltage to be ignited. A low impedance circuit was used in order to apply relatively low voltages but high current density to the initiator wire. We investigated the ignition process theoretically by combining an electric circuit model and a specific current action model related to phase changes. The theoretical calculations are in good agreement with the experimental observations in terms of the burst time and voltage rise profile.
AB - Microwire initiators enhance the output pressure and reduce the required input voltage for the explosives initiation in fusing applications due to large surface areas and high electrical and thermal conductivities. We investigated electrothermal behavior of Cu and Au microwires with diameters in the range of 25∼100 μm. Microwires with smaller diameter ignited quickly and required the lower input voltage to be ignited. A low impedance circuit was used in order to apply relatively low voltages but high current density to the initiator wire. We investigated the ignition process theoretically by combining an electric circuit model and a specific current action model related to phase changes. The theoretical calculations are in good agreement with the experimental observations in terms of the burst time and voltage rise profile.
KW - Electrothermal analysis
KW - Exploding bridge wire (EBW)
KW - Exploding foil initiator (EFI)
KW - Fine wire fusing
KW - Fusing applications
KW - Microwire initiators
KW - Specific current action
KW - Wire igniter
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U2 - 10.1115/DETC2010-28946
DO - 10.1115/DETC2010-28946
M3 - Conference contribution
AN - SCOPUS:80054976922
SN - 9780791844120
T3 - Proceedings of the ASME Design Engineering Technical Conference
SP - 827
EP - 832
BT - ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2010
T2 - ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2010
Y2 - 15 August 2010 through 18 August 2010
ER -