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Search Publications

NIST Authors in Bold

Displaying 2551 - 2575 of 3892

Critical Properties and Phase Separation in Lattice Boltzmann Fluid Mixtures

March 1, 2001
Author(s)
Nicos Martys, Jack F. Douglas
Basic equilibrium properties of Lattice Boltzmann (LB) fluid mixtures (coexistence curve, surface tension, interfacial profile, correlation length) are calculated to characterize the critical phenomena occurring in these model liquids and to establish a

Flammable and Combustible Liquid Spill/Burn Patterns

March 1, 2001
Author(s)
Anthony D. Putorti Jr., Jay A. McElroy, Daniel M. Madrzykowski
Discussions with fire investigators indicate that it would be beneficial to have the ability to predict the quantity of liquid fuel necessary to create a burn pattern of a given size. Full-scale spill and fire experiments were conducted with gasoline and

Laser Scanning for Construction Metrology

March 1, 2001
Author(s)
Geraldine S. Cheok, William C. Stone, Robert R. Lipman, Christoph J. Witzgall, Javier Bernal
This paper summarizes work at the National Institute of Standards and Technology (NIST) in the Non-Intrusive Scanning Technologies for Construction Assessment Project. It will briefly describe the initial proof-of-concept phase of this project, the

Mechanical Properties of High-Strength Concrete at Elevated Temperatures

March 1, 2001
Author(s)
Long T. Phan, Nicholas J. Carino
This report describes results of NIST's experimental program that focuses on effects of elevated temperature exposure on mechanical properties of hing strength concrete (HSC). Mechanical properties were measured by heating, with and without preload, the

Nanoindentation of Polymers: An Overview

March 1, 2001
Author(s)
Mark R. VanLandingham, John S. Villarrubia, William F. Guthrie, G F. Meyers
Indentation measurements made with atomic force microscopy (AFM) probes are relative measurements, largely due to the lack of information regarding the tip shape of the AFM probes. Also, current tip shape calibration procedures used in depth-sensing

Slab Effects in SMRF Retrofit Connection Tests

March 1, 2001
Author(s)
S A. Civjan, M D. Engelhardt, John L. Gross
A series of six full-scale subassemblages were tested to investigate dogbone and haunch retrofits for pre-Northridge steel moment connections. Tests included matched pairs of specimens, one bare steel and one including composite slab. Data were collected

State-of-the-Art Research Is the Future of Fire Investigation

March 1, 2001
Author(s)
Daniel M. Madrzykowski
Researchers at the National Institute of Standards and Technology's Building and Fire Research Laboratory are working with the U.S. Fire Administration; the bureau of Alcohol, Tobacco, and Firearms; and the U.S. Department of Justice to provide a more

Using BEES to Select Cost-Effective Green Products

March 1, 2001
Author(s)
Barbara C. Lippiatt, A Boyles
The BEES (Building for Environmental and Economic Sustainability) version 2.0 software implements a rational, systematic technique for selecting environmentall and economically balanced building products. The technique is based on consensus standards and

Characterization of Coating System Interphases with Phase Imaging AFM

February 1, 2001
Author(s)
Tinh Nguyen, Xiaohong Gu, Mark R. VanLandingham, M Giraud, R Dutruc-Rosset, R Ryntz, D Nguyen
The interphase between a polymer film and a substrate controls the adhesion and durability of a variety of polymeric systems including adhesives, coatings on plastics and metals, and electronic packaging. A polymeric coating system consists of a coating

Distributed Sensor Fire Detection (NIST SP 965)

February 1, 2001
Author(s)
Thomas G. Cleary, Kathy A. Notarianni
This paper details a case study that utilized model simulations to assess the relative performance benefits of distributed sensing over single-station, single-sensor smoke detection and co-located multi-sensor detection. 500 individual CFAST computer fire

Fire Emulator/Detector Evaluator: Design, Operation, and Performance (NIST SP 965)

February 1, 2001
Author(s)
Thomas G. Cleary, Michelle K. Donnelly, William L. Grosshandler
This paper describes the fire emulator/detector evaluator which was developed by NIST. The FE/DE has proven to be a very flexible design. The main function of the device is to reproduce the environment (temperature, air velocity, aerosol and gas species

How Interoperability Saves Money

February 1, 2001
Author(s)
Robert E. Chapman
The pressures of competing in the global marketplace are forcing building control companies, equipment and systems manufacturers, energy providers, utiliites, and design engineers to improve performance and reduce costs. One means of meeting this twin

Nanomechanical Characterization of Polymers Using Scanning Probe Microscopes

February 1, 2001
Author(s)
Mark R. VanLandingham
Scanning probe microscopy (SPM) has been used to study polymeric materials with nanometer spatial resolution. Indentation methods based on SPM technology include the use of cantilever probes with an atomic force microscope (AFM), depth-sensing transducers

Sensor-Driven Fire Model (NIST SP 965)

February 1, 2001
Author(s)
William D. Davis, Glenn P. Forney
Modern building fire sensors are capable of supplying substantially more information to the fire service than just the simple detection of a possible fire. With the increase in the number of sensors installed in buildings for non-fire purposes, it is

Size Distribution and Light Scattering Properties of Test Smokes (NIST SP 965)

February 1, 2001
Author(s)
D W. Weinert, Thomas Cleary, George W. Mulholland
Measurements of particles size distributions and optical properties of smoke detector test smokes may yield a better understanding of existing detector designs and facilitate design improvements; NIST is making such measurements now on smokes produced in

The Influence of Mineral Admixtures on the Rheology of Cement Paste and Concrete

February 1, 2001
Author(s)
Chiara F. Ferraris, K H. Obla, R Hill
Rheological tests on cement paste were used to successfully select the type and dosage of mineral admixtures that improved concrete workability. Among the six different mineral admixtures tested, the ultra fine fly ash (UFFA), was determined to give the
Displaying 2551 - 2575 of 3892
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