Fast recovery strain measurements in a nuclear test environment

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Description

The recovery of early-time (50 ..mu..s or less) strain gage data on structural response experiments in underground nuclear tests has been a continuing problem for experimenters at the Nevada Test Site. Strain measurement is one of the primary techniques used to obtain experimental data for model verification and correlation with predicted effects. Peak strains generally occur within 50 to 100 ..mu..s of the radiation exposure. Associated with the exposure is an intense electromagnetic impulse that produces potentials of kilovolts and currents of kiloamperes on the experimental structures. For successful operation, the transducer and associated recording system must recover from the ... continued below

Physical Description

Pages: 25

Creation Information

Kitchen, W.R.; Nauman, W.J. & Vollmer, D.W. April 30, 1979.

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  • Lawrence Livermore Laboratory
    Publisher Info: California Univ., Livermore (USA). Lawrence Livermore Lab.
    Place of Publication: Livermore, California

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Description

The recovery of early-time (50 ..mu..s or less) strain gage data on structural response experiments in underground nuclear tests has been a continuing problem for experimenters at the Nevada Test Site. Strain measurement is one of the primary techniques used to obtain experimental data for model verification and correlation with predicted effects. Peak strains generally occur within 50 to 100 ..mu..s of the radiation exposure. Associated with the exposure is an intense electromagnetic impulse that produces potentials of kilovolts and currents of kiloamperes on the experimental structures. For successful operation, the transducer and associated recording system must recover from the initial noise overload and accurately track the strain response within about 50 ..mu..s of the nuclear detonation. A gaging and fielding technique and a recording system design that together accomplish these objectives are described. Areas discussed include: (1) noise source model; (2) experimental cassette design, gage application, grounding, and shielding; (3) cable design and shielding between gage and recorder; (4) recorder design including signal conditioner/amplifier, digital encoder, buffer memory, and uphole data transmission; and (5) samples of experimental data.

Physical Description

Pages: 25

Notes

Dep. NTIS, PC A02/MF A01.

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  • Report No.: UCRL-81771
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/6229890 | External Link
  • Office of Scientific & Technical Information Report Number: 6229890
  • Archival Resource Key: ark:/67531/metadc1111137

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • April 30, 1979

Added to The UNT Digital Library

  • Feb. 22, 2018, 7:45 p.m.

Description Last Updated

  • May 8, 2018, 7:18 p.m.

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Kitchen, W.R.; Nauman, W.J. & Vollmer, D.W. Fast recovery strain measurements in a nuclear test environment, report, April 30, 1979; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc1111137/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.