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Displaying 2401 - 2425 of 3902

Investigation of Velocity Boundary Conditions in Counterflow Flames

January 1, 2002
Author(s)
W C. Park, Anthony Hamins
The effects of velocity boundary conditions on the structure of methane-air nonpremixed counterflow flames were investigated by two-dimensional numerical simulation. Two low global strain rates, 12 s-1 and 20 s-1, were considered for comparison with

LIQUID AGENT TRANSPORT AROUND SOLID OBSTACLES

January 1, 2002
Author(s)
Cary Presser, J F. Widmann, G Papadopoulos
The focus of this effort is to investigate the dispersal of liquid fire suppression agents around solid obstacles, and obtain a better understanding of the physical processes of droplet transport in cluttered spaces. An experimental investigation is

Nanocharacterization of Surface and Interface of Different Epoxy Networks

January 1, 2002
Author(s)
Xiaohong Gu, D T. Raghavan, D L. Ho, Li Piin Sung, Mark R. VanLandingham, Tinh Nguyen
The effect of network changes on the surface and interface properties of amine-cured epoxy has been investigated. Samples of different crosslinked epoxies are prepared by mixing stoichiometrically pure diglycidyl ether of bisphenol A (n=0.03) with

On the Mitigation of Early Age Cracking

January 1, 2002
Author(s)
Dale P. Bentz, M R. Geiker, O M. Jensen
Potential means of limiting early age cracking ofconcrete structures have been investigated. Threedifferent methods of mitigating autogenous strainsand stresses in cement mortars (w/s=0.35, 8 % silica fume) are compared: 1.) reduction of thesurface tension

Standards of Seismic Safety for Existing Federally Owned and Leased Buildings

January 1, 2002
Author(s)
Stephen A. Cauffman, Hai S. Lew
The seismic safety evaluation and mitigation standards, Standards for Seismic Safety for Existing Federally Owned and Leased Buildings, were developed for use by the Federal Government by the Interagency Committee on Seismic Safety in Construction (ICSSC)

Suppression Effectiveness of Aerosols: The Effect of Size and Flame Type

January 1, 2002
Author(s)
J W. Fleming, B A. Williams, R S. Sheinson
This paper summarizes efforts to identify properties of aerosols (liquids and solids) leading to effective fire suppression. It is part of the US Department of Defense’s Next Generation Fire Suppression Technology Program (NGP) supported by the DoD

Temperature Regions of Optimal Chemical Inhibition of Premixed Flames

January 1, 2002
Author(s)
M D. Rumminger, Valeri I. Babushok, Gregory T. Linteris
Chemically-active fire suppressants may, due to their properties or the means by which they are added to flames, have strong inhibition effects in particular locations in a flame. To study the spatial effects of chemically-active inhibitors, numerical

Thermal Degradation and Flammability Properties of Polypropylene-Carbon Nanotube Composites

January 1, 2002
Author(s)
Takashi Kashiwagi, E Grulke, J Hilding, Richard H. Harris Jr., W H. Awad, J. F. Douglas
Nanocomposites based on polypropylene and carbon nanotubes (up to 2 vol.-%) were melt blended, yielding a good dispersion of nanotubes without using any organic treatment or additional additives. Carbon nanotubes are found to significantly enhance the

Thermodynamics of Metal Agent Fire Extinguishment

January 1, 2002
Author(s)
J D. Mather, R E. Tapscott
The thermodynamics of oxides, carbonates, halides and related metal compounds involved in extinguishment by dry chemicals and metal agents has been analyzed. It is shown that lattice energies play an important role in determining the extinguishment

Fire Tests of Men's Suits on Racks. Report of Test (FR 4013)

December 15, 2001
Author(s)
D W. Stroup, Laurean A. DeLauter, J Lee, G Roadarmel
A series of fire tests were conducted to characterize the potential hazard from ignition of men's suits hanging on racks. The fire test scenario was selected as part of a fire investigation being conducted by the U.S. Department of Treasury's Bureau of

Burning Behavior of Selected Automotive Parts From a Sports Coupe.

December 1, 2001
Author(s)
Thomas J. Ohlemiller, John R. Shields
Selected functional parts from a sports coupe were subjected to a gas: flame ignition source and burned in a manner that allowed measurement of the resulting total heat release rate and heat fluxes to the surroundings. This is the second part of a study
Displaying 2401 - 2425 of 3902
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