Relevant bibliographies by topics / Exploding Foil Initiator (EFI)

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Exploding Foil Initiator (EFI)'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "Exploding Foil Initiator (EFI)"

1

Borman, A. J., C. F. Dowding, and D. Seddon. "Modeling of the exploding foil initiator and related circuitry for the variable mode of operation." Journal of Defense Modeling and Simulation: Applications, Methodology, Technology 17, no. 4 (April 30, 2019): 399–408. http://dx.doi.org/10.1177/1548512919844332.

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Analytical and numerical models, validated against published data, were developed to calculate the velocity and time of arrival duration (ToAD) of the flyer-plasma material at the top of the barrel of an exploding foil initiator (EFI), as commonly used in explosive devices. Such tools will aid system designers in the optimization of capacitor discharge circuit (CDC) or EFI bridge material properties. The analytical elements of the approach developed support the requirement for the consideration of mass ejection variation with respect to initial capacitor voltage. The numerical elements of the approach developed demonstrate that EFI design alteration to increase flyer mass is less effective in reducing ToAD than supply voltage modulation via the CDC. This finding is of particular relevance for in situ control of functional performance characteristics. This work goes on to demonstrate that such control is impracticable when using hexanitrostilbene, since the initial capacitor voltages necessary to yield appropriate ToAD for deflagration deliver insufficient energy to instigate a response from the EFI.
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Yu, Hyeonju, Seung-gyo Jang, Kyu-Hyoung Kim, and Jai-ick Yoh. "An Experimental Study on Performance of a Miniaturized Exploding Foil Initiator using VISAR." Journal of the Korean Society of Propulsion Engineers 21, no. 5 (October 1, 2017): 80–87. http://dx.doi.org/10.6108/kspe.2017.21.5.080.

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Borman, Alexander J., Colin F. Dowding, Jonathan D. Griffiths, and Dick Seddon. "Exploding Foil Initiator (EFI) Modes of Operation Determined Using Down-Barrel Flyer Layer Velocity Measurement." Propellants, Explosives, Pyrotechnics 42, no. 3 (October 24, 2016): 318–28. http://dx.doi.org/10.1002/prep.201600195.

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Baginski, Thomas A., Robert N. Dean, and Ed J. Wild. "A Micromachined Robust Planar Triggered Sparkgap Switch for High Power Pulse Applications." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2010, DPC (January 1, 2010): 001869–86. http://dx.doi.org/10.4071/2010dpc-wp24.

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High voltage (HV) switches capable of operating at high speeds with high current levels are used in a variety of applications in commercial and government systems. Examples of HV switches include triggered sparkgap, dielectric breakdown, and mercury vapor switches. The triggered sparkgap switch is a three-element, gas-filled, ceramic-to-metal, hermetically sealed, pressurized switch that operates in an arc discharge mode. Triggered sparkgaps have been in use for many years, providing precision timing and activation of in-flight functions such as missile stage separation. These applications involve the activation of electro-explosive devices such as an exploding bridge-wire [EBW] or an exploding foil initiator [EFI]. This paper discusses the fabrication and characterization of a novel high voltage planar discharge switch using micromachining techniques. The switch provides a low cost alternative to conventional triggered sparkgaps. The switch is designed for direct integration into the strip-line geometries used in a conventional capacitive discharge unit (CDU). The geometry of the device was selected to minimize parasitic impedances associated with conventional firing circuits. The switch design is microfabricated on an alumina substrate utilizing a patterned electron-beam deposited metallic stack. A polyimide layer selectively deposited over the metal stack provides dielectric isolation and passivation for the switch electrodes. A similar methodology was utilized to fabricate sample EFIs for switch validation tests with insensitive secondary high explosive (HE) pellets. The discharging of the HV capacitor through the patterened bridgefoil of an EFI results in rapid vaporization of the metal stack. The high pressure gas formed by the vaporized metal accelerates the adjacent polyimide layer to high velocity. The polyimde layer then impacts the HE pellet, inducing a shock wave, which results in prompt detonation of the material. Thus, this device is a type of MEMS actuator with a very specialized use. Design, fabrication and test data are presented and discussed.
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Chen, Qingchou, Tao Ma, and Yong Li. "Sensitivity Prediction of Exploding Foil Initiator." Propellants, Explosives, Pyrotechnics 44, no. 4 (January 23, 2019): 455–63. http://dx.doi.org/10.1002/prep.201800210.

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Lv, Jun Jun, Qing Xuan Zeng, Ming Yu Li, and Qing Xia Yu. "Key Fabrication Technology Research of Exploding Foil Initiator." Applied Mechanics and Materials 347-350 (August 2013): 1207–10. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.1207.

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In order to realize consistency and low cost in the production process of the exploding foil initiator, the manufacturing method of exploding foil initiator was studied using micro processing technology. Microcrystalline glass was used as substrate, and magnetron sputtering,photolithography and wet etching technology were utilized to product the metal bridge foil on the surface of the substrate. SU-8 photoresist was used as the barrel material and scanning electron microscope was exploited to characterize structure of the initiator. Through the electrical tests, the flyer was successfully generated and after the barrel had a good integrity.
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Wang, Ke, Peng Zhu, Cong Xu, Qiu Zhang, Zhi Yang, and Ruiqi Shen. "Firing Performance of Microchip Exploding Foil Initiator Triggered by Metal-Oxide-Semiconductor Controlled Thyristor." Micromachines 11, no. 6 (May 29, 2020): 550. http://dx.doi.org/10.3390/mi11060550.

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In this paper, microchip exploding foil initiators were fabricated by micro-electro-mechanical system scale fabrication methods, such as magnetron sputtering, photolithography, and chemical vapor deposition. A small-scale capacitor discharge unit based on the metal-oxide-semiconductor controlled thyristor was designed and produced to study the performance of the microchip exploding foil initiator. The discharge performance of the capacitor discharge unit without load and the effect of protection devices on the metal-oxide-semiconductor controlled thyristor were studied by the short-circuit discharge test. Then, the electric explosion characteristic of the microchip exploding foil initiator was also conducted to study the circuit current, peak power, deposited energy, and other parameters. Hexanitrostilbene refined by ball-milling and microfluidic technology was adopted to verify the initiation capability of the microchip exploding foil initiator triggered by the metal-oxide-semiconductor controlled thyristor. The results showed that the average inductance and resistance of the capacitor discharge circuit were 22.07 nH and 72.55 mΩ, respectively. The circuit peak current reached 1.96 kA with a rise time of 143.96 ns at 1200 V/0.22 μF. Hexanitrostilbene fabricated by ball-milling and microfluidic technology was successfully initiated at 1200 V/0.22 μF and 1100 V/0.22 μF, respectively.
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Kim, Dong-seong, and Seung-gyo Jang. "Study on Aging Characteristics of Exploding Foil Initiator." Journal of the Korean Society for Aeronautical & Space Sciences 48, no. 8 (August 31, 2020): 581–88. http://dx.doi.org/10.5139/jksas.2020.48.8.581.

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Lee, Minwoo, Seungjun Back, Youngkap Son, and Seung-gyo Jang. "Design Reliability Estimation of Low Energy Exploding Foil Initiator." Journal of the Korean Society of Propulsion Engineers 22, no. 5 (October 1, 2018): 40–48. http://dx.doi.org/10.6108/kspe.2018.22.5.040.

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Zhou, Xiang, Ruiqi Shen, Yinghua Ye, Peng Zhu, Yan Hu, and Lizhi Wu. "Influence of Al/CuO reactive multilayer films additives on exploding foil initiator." Journal of Applied Physics 110, no. 9 (November 2011): 094505. http://dx.doi.org/10.1063/1.3658617.

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Dissertations / Theses on the topic "Exploding Foil Initiator (EFI)"

1

Yilmaz, Muhammed Yusuf. "Design And Analysis Of A High Voltage Exploding Foil Initiator For Missile Systems." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615437/index.pdf.

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Increasing insensitivity demands on designing and producing munitions necessitates utilizing primarily insensitive initiation trains specifically in missile systems. Exploding Foil Initiator (EFI) is a high voltage detonator that is used as the initiation elementof rocket motor and warhead initiation trains of modern insensitive missile systems. In this thesis, EFI prototypes are designed and manufactured with the knowledge gained from detailed literature studies. An experimental setup is constructed including firing and testing means for EFI prototypes. That experimental setup is capable of firing EFI prototypes from 500 volts to 3000 volts voltage range. Besides, it allows measuring electrical characteristics like current and voltage traces and average velocity of the flyer plates of these prototypes.Using EFI prototypes,detonation tests of HNS &ndash
IV and PBXN &ndash
5 explosive pellets are carried out.Function times and detonation outputs of the prototypesare measured with the same experimental setup. A numerical study which predicts electrical performance of EFI prototypes and impact characteristics of flyer plates are carried out. Numerical code is validated with the experimental results.
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Conference papers on the topic "Exploding Foil Initiator (EFI)"

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Davies, H. R., D. J. Chapman, T. A. Vine, W. G. Proud, Mark Elert, Michael D. Furnish, William W. Anderson, William G. Proud, and William T. Butler. "CHARACTERISATION OF AN EXPLODING FOIL INITIATOR (EFI) SYSTEM." In SHOCK COMPRESSION OF CONDENSED MATTER 2009: Proceedings of the American Physical Society Topical Group on Shock Compression of Condensed Matter. AIP, 2009. http://dx.doi.org/10.1063/1.3295125.

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Koc, Suzan, Muhammed Y. Yilmaz, Abdullah Ulas, and Burak Kizilkaya. "An Experimental and Numerical Study on Exploding Foil Initiators (EFIs)." In 49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-3817.

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Baoyue, Zhang, Zheng Song, and Kang Xingguo. "Simulations of the transient electromagnetic field in exploding foil initiator." In 2015 IEEE Advanced Information Technology, Electronic and Automation Control Conference (IAEAC). IEEE, 2015. http://dx.doi.org/10.1109/iaeac.2015.7428532.

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Sanchez, N. J., B. J. Jensen, W. D. Neal, A. J. Iverson, and C. A. Carlson. "Dynamic exploding foil initiator imaging at the advanced photon source." In SHOCK COMPRESSION OF CONDENSED MATTER - 2017: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. Author(s), 2018. http://dx.doi.org/10.1063/1.5045022.

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Kim, Kyoungjin, Kyu-Hyoung Kim, and Seung-gyo Jang. "PREDICTION MODEL AND VERIFICATION OF EXPLOSIVE IGNITION IN EXPLODING FOIL INITIATOR SYSTEM." In Second Thermal and Fluids Engineering Conference. Connecticut: Begellhouse, 2017. http://dx.doi.org/10.1615/tfec2017.asp.017368.

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6

Neal, William, and Mike Bowden. "High fidelity studies of exploding foil initiator bridges, Part 2: Experimental results." In SHOCK COMPRESSION OF CONDENSED MATTER - 2015: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. Author(s), 2017. http://dx.doi.org/10.1063/1.4971480.

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Bowden, Mike, and William Neal. "High fidelity studies of exploding foil initiator bridges, Part 1: Experimental method." In SHOCK COMPRESSION OF CONDENSED MATTER - 2015: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. Author(s), 2017. http://dx.doi.org/10.1063/1.4971576.

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Neal, William, and Christopher Garasi. "High fidelity studies of exploding foil initiator bridges, Part 3: ALEGRA MHD simulations." In SHOCK COMPRESSION OF CONDENSED MATTER - 2015: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. Author(s), 2017. http://dx.doi.org/10.1063/1.4971614.

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Journal articles
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