Simulation and experimental studies of electrothermal behaviors of microwire initiators for fusing applications

Seongjin Jang, Sarah Du, Kishore Pochiraju, Souran Manoochehri

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publicationASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2010
Pages827-832
Number of pages6
DOIs
StatePublished - 2010
EventASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2010 - Montreal, QC, Canada
Duration: 15 Aug 201018 Aug 2010

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
Volume4

Conference

ConferenceASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2010
Country/TerritoryCanada
CityMontreal, QC
Period15/08/1018/08/10

Keywords

  • Electrothermal analysis
  • Exploding bridge wire (EBW)
  • Exploding foil initiator (EFI)
  • Fine wire fusing
  • Fusing applications
  • Microwire initiators
  • Specific current action
  • Wire igniter

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