Time-resolved diagnostics for concrete target response

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In order to facilitate the design of advanced penetrating weapons for defeating land targets, the interaction of concrete with high-velocity penetrators needs to be better characterized. To aid in this effort, three new types of time-resolved diagnostics are being developed and have been used in two experiments and one demonstration: fiber optic arrays to localize penetrators in space and time, Fabry-Perot velocimetry to record the concrete particle velocity, which is related to the pressure, at specific locations within concrete targets, and micropower impulse radar to provide a non-intrusive measure of the penetrator position-time history in a target. The two experiments ... continued below

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10 p.

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Baum, D.W.; Kuklo, R.M.; Reaugh, J.E. & Simonson, S.C. May 1, 1996.

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Description

In order to facilitate the design of advanced penetrating weapons for defeating land targets, the interaction of concrete with high-velocity penetrators needs to be better characterized. To aid in this effort, three new types of time-resolved diagnostics are being developed and have been used in two experiments and one demonstration: fiber optic arrays to localize penetrators in space and time, Fabry-Perot velocimetry to record the concrete particle velocity, which is related to the pressure, at specific locations within concrete targets, and micropower impulse radar to provide a non-intrusive measure of the penetrator position-time history in a target. The two experiments used the fiber optic array and the Fabry-Perot velocimeter to diagnose the response of concrete to penetration by a Viper shaped charge jet. The results were analyzed using the CALE continuum mechanics simulation program, for which a preliminary model of the material properties of concrete was developed. The fiber optic arrays recorded the bow shock at locations 6.4 and 16.9 cm from the front surfaces. The Fabry-Perot velocimeter measured a free-surface velocity of 0.13 km/s at a distance of 3 cm and obliquity 70{degree} from the jet, which was moving at an interface velocity of 4.0 km/s at a depth of 29 cm. These values imply a pressure of about 6.6 kbar at that location. The demonstration used micropower impulse radar with a pulse repetition frequency of 0.25 MHz and a cell size of 30 ps to detect and record the motion of a metal penetrator simulant moving inside a cylindrical concrete target.

Physical Description

10 p.

Notes

OSTI as DE96010825

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  • 46. annual bomb and warhead technical symposium, Monterey, CA (United States), 13-15 May 1996

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  • Other: DE96010825
  • Report No.: UCRL-JC--122762
  • Report No.: CONF-9605165--1
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/238554 | External Link
  • Office of Scientific & Technical Information Report Number: 238554
  • Archival Resource Key: ark:/67531/metadc672088

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Creation Date

  • May 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • June 23, 2016, 12:43 p.m.

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Baum, D.W.; Kuklo, R.M.; Reaugh, J.E. & Simonson, S.C. Time-resolved diagnostics for concrete target response, report, May 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc672088/: accessed September 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.