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Displaying 2101 - 2125 of 3892

Light Scattering Characteristics and Size Distribution of Smoke and Nuisance Aerosols

June 16, 2003
Author(s)
D W. Weinert, Thomas Cleary, George W. Mulholland, P F. Beever
This paper presents the differential mass scattering cross section [m 2multiply by}g -1multiply by}sr -1] of various non-flaming and flaming fire generated smoke aerosols as well as nuisance aerosols created in the Fire Emulator/Detector Evaluator. These

Measurement of Soot Extinction Coefficients

June 16, 2003
Author(s)
J F. Widmann, Jiann C. Yang, George W. Mulholland, Anthony P. Hamins
An experimental apparatus used to obtain soot extinction coefficients in the infrared portion of the electromagnetic spectrum will be presented. Numerous experimental measurements of soot extinction coefficients have been previously obtained at visible

A Model to Predict Hurricanes Induced Losses for Residential Structures

June 1, 2003
Author(s)
J P. Pinelli, C Subramanian, L. Zhang, K Gurley, A Cope, Emil Simiu, S M. Diniz, S Hamid
This paper presents a practical probabilistic model for the projection of annualized damage costs to residential structures due to hurricanes. The estimation of the damage is accomplished by first defining the basic damage modes for components of specific

BFRL Publications, 2002

June 1, 2003
Author(s)
Star R. Burgess, Kathleen C. Whisner, Glenn P. Forney, Paul A. Reneke
Welcome to BFRL Publications, 2002. These two CD-ROMs contain publications produced by BFRL staff, publications resulting from contracts or grants with BFRL and publications contained in poceedings from BFRL sponsored conferences orworkshops. The Volume 1

Cold Discharge of CF 3 I in a Simulated Aircraft Engine Nacelle

June 1, 2003
Author(s)
Jiann C. Yang, Samuel L. Manzello, Marc R. Nyden, M D. Connaghan
An aircraft engine nacelle simulator was built to study the dispersion behavior of CF3I, a potential halon 1301 (CF3Br) replacement, at an extremely cold temperature (nominally 40 C). The experimental fixture consists of a simulated engine nacelle with

Micro Channel Heat Transfer, Pressure Drop and Macro Prediction Methods

June 1, 2003
Author(s)
Mark A. Kedzierski
Advances in the basic understanding of fluid physics have opened an era of unprecedented application of heat transfer processes, and fluid dynamics systems using micro channels. One of the greatest obstacles to the application of leading edge fluid physics

Report of Test on Experimental Conditions and Preliminary Results for the International Fire Model Benchmarking And Validation Exercise #3

June 1, 2003
Author(s)
Anthony P. Hamins, Alexander Maranghides, Erik L. Johnsson, Michelle K. Donnelly, Jiann C. Yang, George W. Mulholland
As part of its Fire Risk Research Program, the NRC (Nuclear regulatory Commission) and NIST (National Institute of Standards and Technology) are participating in an International Collaborative Fire Model Project (ICFMP) to assess and validate fire computer

Simulation of Cup-Burner Flames in Microgravity

June 1, 2003
Author(s)
V Katta, F Takahashi, Gregory T. Linteris
The extinction process of cup-burner flames under normal-gravity conditions were previously studied. As the low-speed diffusion flames behave differently in microgravity compared to those on earth, it is important to understand the structureof cup-burner

Thermal and Flammability Properties of a Silica-PMMA Nanocomposite

June 1, 2003
Author(s)
Takashi Kashiwagi, A B. Morgan, Joseph M. Antonucci, Mark R. VanLandingham, Richard H. Harris Jr., W H. Awad, John R. Shields
PMMA, poly(metheylmethacrylate), nanocomposites were made by in situ radical polymerization of MMA, methylmethacrylate, with colloidal silica (ca. 12 nm) to study the effects of nanoscale silica particles on the physical properties and flammability

Reactive Molecular Dynamics Model of Thermal Decomposition in Polymers

May 11, 2003
Author(s)
Stanislav I. Stoliarov, Marc R. Nyden, R E. Lyon
The application of quantum chemical and molecular simulation methods can reveal new insights into the thermal degradation chemistries of materials. This work presents and employs an extension of classical force-field-based molecular dynamics to modeling

Database-Assisted Design and Structural Reliability for Building Codes

May 1, 2003
Author(s)
S M. Diniz, Emil Simiu
We present a database-assisted design (DAD)-compatible probabilistic procedure for estimating (a)wind effects for any return period and (b) wind load factors. Unlike earlier reliability estimates, we account for the randomness of peak effects and for

Developments toward an Autonomous Robotic Crane for Automated Steel Construction

May 1, 2003
Author(s)
Kamel S. Saidi, Alan M. Lytle, Nicholas A. Scott
The NIST Construction Metrology and Automation Group, in cooperation with the NIST Intelligent Systems Division, is researching robotic structural steel placement as part of a project to develop an Automated Steel Construction Testbed. This project was

Relating Fresh Concrete Viscosity Measurements From Different Rheometers

May 1, 2003
Author(s)
Chiara F. Ferraris, Nicos Martys
The rheological properties of concrete need to be measured and predicted to enable the characterization of special concrete such as self-consolidating concrete (SCC). It was also shown by a round-robin held in 2000 [ , ] that different rheometers give a

Simulation of Heat Exchangers of a Window Air Conditioner Retrofitted with R-407C

May 1, 2003
Author(s)
S Devotta, A S. Padalkar, N K. Sane, Piotr A. Domanski, N N. Sawant
This paper presents the results of simulation of heat exchangers of an HCFC-22 window air conditioner retrofitted with R-407C. The test conditions considered are as per the Indian Standard IS 1391 (1992) for unitary air conditioners. The simulation has
Displaying 2101 - 2125 of 3892
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