Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "swepub ;pers:(Larsson Anders);conttype:(refereed);pers:(Hurtig Tomas);pers:(Appelgren Patrik);pers:(Lundberg Patrik);pers:(Westerling Lars)"

Sökning: swepub > Larsson Anders > Refereegranskat > Hurtig Tomas > Appelgren Patrik > Lundberg Patrik > Westerling Lars

  • Resultat 1-3 av 3
Sortera/gruppera träfflistan
  • Appelgren, Patrik, et al. (författare)
  • Experimental Study of Electromagnetic Effects on Solid Copper Jets
  • 2010
  • Ingår i: Journal of applied mechanics. - 0021-8936. ; 77:1, s. 011010
  • Tidskriftsartikel (refereegranskat)abstract
    • In this paper we present a study of the interaction between all electric current pulse and a solid copper jet. Experiments were performed using a dedicated pulsed power supply delivering a current pulse of such amplitude, rise little, and duration that the jet is efficiently affected. The copper jet was created by using a shaped charge warhead. All electrode configuration consisting of two aluminum plates with a separation distance of 150 mm was used. The discharge current pulse and the voltages at the capacitors and at the electrodes were measured to obtain data oil energy deposition in and the resistance of the jet and electrode contact region. X-ray diagnostics were used to radiograph the jet, and by analyzing the radiograph, the degree of disruption of the electrified jet could be obtained. It was found that a current pulse with an amplitude of 200-250 kA and a rise time of 16 mu s could strongly enhance the natural fragmentation of the jet. In this case, the initial electric energy was 100 kJ and about 90% of the electric energy was deposited in the jet and electrodes. At the exit of the electrode region, the jet fragments formed rings with a radial velocity of up to 200 m/s, depending oil the initial electric energy in the pulsed power supply. [DOI: 10.1115/1.3172251]
  • Appelgren, Patrik, et al. (författare)
  • Disruption mechanisms in electrified solid copper jets
  • 2011
  • Ingår i: Journal of applied mechanics. - 0021-8936. ; 78:2
  • Tidskriftsartikel (refereegranskat)abstract
    • Interaction between a solid copper jet and an electric current pulse is a complex process that has been experimentally studied by letting a jet created by a shaped charge device pass through an electrode configuration consisting of two aluminum plates with a separation distance of 150 mm. When the jet bridged the electrodes, which are connected to a charged pulsed power supply, current pulses with amplitude up to 250 kA were passed through the jet. By using flash X-ray diagnostics, the disruption of the electrified jets could be studied. In this paper, the disruption of the electrified jets is discussed and compared with disruption phenomena observed in electrically exploded metal rods in a static setup. Necks are naturally formed along a stretching jet, and in the experiments with current interaction these necks explode electrically. In the static experiments, the metal rods have small notches distributed along the rod to resemble the necks of the jet. When two neighboring necks or notches explode, the shock of the explosion compresses the intermediate jet or rod segment axially and the material is forced out radially. The disruption phenomena in the jet and rod experiments are similar with rapid expansion of the metal at explosion and at comparable velocities.
Skapa referenser, mejla, bekava och länka
  • Resultat 1-3 av 3
Typ av publikation
tidskriftsartikel (2)
konferensbidrag (1)
Typ av innehåll
Skoglund, Melker (3)
Kungliga Tekniska Högskolan (3)
Uppsala universitet (1)
Engelska (3)
Forskningsämne (UKÄ/SCB)
Teknik (2)


pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy