WorldCat Identities

Halsey, J. F.

Overview
Works: 4 works in 6 publications in 1 language and 6 library holdings
Genres: Periodicals 
Roles: Author
Classifications: QC771,
Publication Timeline
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Most widely held works by J. F Halsey
Spectra of ground shocks produced by nuclear detonations (U) : Operation Plumbbob, Project 1.9 by J. F Halsey( Book )

3 editions published between 1958 and 1959 in English and held by 2 WorldCat member libraries worldwide

The problem of defining design parameters for structures capable of withstanding blast-induced ground shock suggested the use of shock spectra as a suitable means of presenting environmental conditions. Self-contained mechanical reed gages, capable of measuring the displacement shock spectrum over a frequency range of 3 to 300 cps in any one direction, were placed on Shots Stokes, Smoky, Galileo, Whitney, and Charleston. Canisters containing the gages were normally placed with tops flush to the ground level at predicted pressure levels of approximately 100 psi; however, on Shot Smoky two additional gages were placed on the floor of an earth-covered-personnel shelter, and two gages were installed on a concrete block for Shot Whitney. A composite plot of the results of surface gages from Shots Smoky, Galileo, and Whitney indicates some definite trends. The displacements are 2 to 3 times higher at 3 cps for the vertical component than for the radial component. The rate of decrease of displacement with increasing frequency is greater for the vertical component than for the radial component. A comparison of the results from the surface gages and those within the structure on Shot Smoky indicates an attenuation factor of three for vertical displacements, with no appreciable change in the radial direction
Western Sabbath School messenger and children's friend( )

in English and held by 1 WorldCat member library worldwide

GROUND-SHOCK SPECTRA FROM SURFACE BURSTS( Book )

1 edition published in 1960 in English and held by 1 WorldCat member library worldwide

Self-contained mechanical reed gages, capable of measuring the displacement-shock spectrum over a frequency range of 3 to 300 cps in any one direction, were used during Shots Cactus and Koa. Canisters containing the gages were normally placed with their tops flush to the ground level at predicted pressure levels from 75 to 200 psi on both shots. Additional gages were installed in earth-confined arch structures of Project 3.2. Satisfactory records were obtained for both shots. Limited comparisons have been made between the results obtained for the low-yield (Cactus) and high-yield (Koa) shots at the Eniwetok Proving Ground (EPG) and between the results for Shot Cactus and the lowyield Shots Whitney, Galileo, and Smoky during Operation Plumbbob at the Nevada Test Site (NTS). In general, vertical and radial displacements for Shot Koa were much lower than expected from the extrapolation of data obtained from low-yield shots during Operation Plumbbob. Differences in soil conditions, surface versus raised bursts, and topography variations may have been contributing factors. The Appendix contains the preliminary results of intensive parametric analyses and theoretical studies being made in an attempt to establish suitable scaling laws. (Author)
 
Audience Level
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Audience Level
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  Kids General Special  
Audience level: 0.88 (from 0.84 for A synopsis ... to 1.00 for GROUND-SHO ...)

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