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Fire

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  • Published Date
Displaying 1926 - 1950 of 3910

Relating Gloss Loss to Topographical Features of a PVDF Coating

October 6, 2004
Author(s)
J Faucheu, Li Piin Sung, K Wood, Jonathan W. Martin
Semi-gloss commercial poly(vinylidene fluoride) (PVDF) coatings typically have 60o gloss values between 20 and 50. Gloss is affected by PVDF crystallite structures and by the pigmentation. In this paper, we have demonstrated that for some pigmented PVDF

Building Stones of America: 50 Years of the NIST Stone Test Wall

October 1, 2004
Author(s)
Paul E. Stutzman, J Raz
In 1880 the Census Office and the National Museum in Washington, DC conducted a study of building stones of the United States and collected a set of reference specimens from working quarries. This collection was merged with the Centennial Collection of US

Round Robin Study of Total Heat Flux Gauge Calibration at Fire Laboratories

October 1, 2004
Author(s)
William M. Pitts, A V. Murthy, J L. de Ris, J R. Filtz, K Nyard, D Smith, I Wetterlund
Total heat flux gauges are widely employed in fire research and fire testing laboratories. Several fire laboratories have developed systems for calibrating these gauges. There are major differences between these calibration facilities, and prior to this

Shape Analysis of a Reference Cement

October 1, 2004
Author(s)
Edward J. Garboczi, Jeffrey W. Bullard
Recently, techniques for acquiring, analyzing, and using 3-D shape information for aggregates (sand, gravel) have been developed and demonstrated. These mathematical techniques, based on spherical harmonic coefficient analysis, have been applied to x-ray

R-22 Replacement Status (in Chinese)

September 17, 2004
Author(s)
J M. Calm, Piotr Domanski
Since its initial recognition in 1928 and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the largest chillers and heat pumps, including those for district cooling and heating. Individual

Letter Report of a Life Cycle Cost Analysis for GSA Chillers

September 2, 2004
Author(s)
Mark A. Kedzierski
A life-cycle-cost analysis revealed that the combined GSA regions would save nearly half a billion dollars over 15 years in electricity costs with a hypothetical 30 % increase in chiller efficiency. The largest savings were apparent for GSA regions 2, 4, 7

Effect of Microstructure of Fluorinated Acrylic Coatings on UV Degradation Testing

September 1, 2004
Author(s)
Li Piin Sung, Silvia Vicini, D L. Ho, L Hedli, C Olmstead, Kurt Wood
This paper presents research results on the relationships between the microstructure and the performance/weatherability of fluoropolymer/acrylic coatings. We studied fluoropolymer/acrylic blends of identical composition, prepared as films using three

Real-Time Monitoring of Polymer Nanocomposites Composition during Extrusion Compounding

September 1, 2004
Author(s)
Rick D. Davis, Jeffrey W. Gilman, Anthony J. Bur, M M. McBrearty, P R. Start, Young J. Lee
Dielectirc spectroscopy was conducted during extrusion processing of polyamide-6 (PA6) and layered silicate/polyamide-6 manocomposites. Dielectric dispersion parameteers were identified that appear sensitive to layered silicate concentration and degree of

The NIST 3 Megawatt Quantitative Heat Release Rate Facility - Description and Procedures

September 1, 2004
Author(s)
Rodney A. Bryant, Thomas J. Ohlemiller, Erik L. Johnsson, Anthony P. Hamins, B S. Grove, William F. Guthrie, Alexander Maranghides, George W. Mulholland
The 3 Megawatt Heat Release Rate Facility was developed at NIST as a first step toward having broad capabilities for making quantitative large scale fire measurements. Such capabilities will be used at NIST to validate fire models and to develop sub-grid
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