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Walter J. Rossiter Jr, M Vangel, M E. McKnight, A Signor, Walter E. Byrd
A laboratory study was conducted to evaluate the reliability of commercial, field-portable ultrasonic extraction-anodic stripping voltammetry (UE/ASV) for determining the lead levels of laboratory-prepared paint films when tests were performed by certified
This publication contains the proceedings of the 32nd Joint Meeting of the U.S.-Japan Joint Panel on Wind and Seismic Effects. The meeting was held May 16-19, 2000, at the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland (USA
Richard G. Gann, Jason D. Averill, Kathryn M. Butler, Walter W. Jones, George W. Mulholland, J L. Neviaser, Thomas J. Ohlemiller, Richard D. Peacock, Paul A. Reneke, J R. Hall
G Papadopoulos, Rodney A. Bryant, William M. Pitts
Phase-resolved measurements of the velocity field in acoustically forced, flickering laminar co-flowing methane/air diffusion flames have been made. Identical flames have been studied extensively in the past in order to characterize the effects of the
Laser light scattering and thermophoretic sampling have been used to investigate particle formation in a methane-air counterflow diffusion flames inhibited by iron pentacarbonyl (Fe(CO)5) added to the fuel or the oxidizer stream. Flame calculations which
The extinguishment of diffusion flames on two types of burners-an opposed-flow Tsuji burner and an axisymmetric burner with a surrounding coflow-by thermal agents has been investigated. Thermal agents are those that act primarily by extracting heat and
Mark R. VanLandingham, Christopher C. White, Xiaohong Gu, Tinh Nguyen
Durability, in terms of service life, is often related to the failure due to service conditions of an unacceptable percentage of a product population. In many cases, this percentage is much less than 1 %, and thus the factors affecting early times-to
Roger V. Bostelman, James S. Albus, William C. Stone
Construction equipment is typically massive and operated manually with minimal use of sensors or computers for measurement or control. Research in the Intelligent Systems and Structures Divisions at the National Institute of Standards and Technology has
Multizone modeling refers to annalysis techniques that use a simplified, zonal representation of a building to study building airflows, pressure differences, and contaminant transport. Each zone is assumed to have uniform temperature, pressure, and
In concretes with water-to-cement (w/c) ratios below about 0.38, a portion of the cement particles will always remain unhydrated due to space limitations within the material. Thus, in many of the high-performance concretes currently being produced, cement
This paper is a condensed version of G2001-1853, Peak Non-Gaussian Wind Effects for Database-Assisted Low-Rise Building Design, for publication in the Journal of Engineering Mechanics.Original paper abstract was:Procedures for estimating the peaks of the
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
Results of part of an ongoing research program, being conducted at the National Institute of Standards and Technology (NIST) to study effects of elevated temperature exposure on performance of high performance concrete (HPC), are presented. One of the
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
The Department of Defenses Next Generation Fire Suppression Technology Program (NGP) has completed its fourth year of research with a revised goal to develop and demonstrate, by 2005, technology for economically feasible, environmentally acceptable and
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
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
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
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
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
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
Commercial transport aircraft cargo compartments require both fire detection and suppression capabilities in order to meet regulatory requirements. System reliability is very important since in many cases the cargo compartment is inaccessible during flight
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
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
M Giraud, Tinh Nguyen, Xiaohong Gu, Mark R. VanLandingham
The effects of stoichiometry and epoxy molecular mass on surface and interfacial microstructures and wettability of amine-cured epoxies have been investigated. Thin (150 m) amine-cured epoxy films were prepared by reacting epoxy resins having sixdifferent