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The major technical issues regarding the calibration of Surface Scanning Inspection Systems (SSIS) are presented including descriptions of the salient features of SSISs and the deposition system using the differential mobility analyzer. The role of the
The number concentration, ionization chamber output, and mass concentration were recorded continuously for five different test smokes generated in the fire emulator/detector evaluator. The number and the mass concentrations are direct measures of the
Nondestructively characterizing the mechanical properties of adhesives and coatings is a difficult challenge. There are many instances, however, where it would be useful to measure these properties and to monitor how they change while the sample is being
This is a chapter of a proposed book. This chapter reviews the progress of flammability of new type of polymer nanocomposites based on nanosilica particles, polyhedral oligometric silsequixanes (POSS), graphite, and carbon nanotubes. Three different types
Marc R. Nyden, Glenn P. Forney, S I. Stoliarov, P R. Westmoreland
A new version of the novel reactive molecular dynamics algorithm (MD_REACT) has been developed as a result of collaboration between researchers at the University of Massachusetts, Amherst, and the Building and Fire Research Laboratory of NIST. The method
Michelle K. Donnelly, George Mulholland, Michael R. Winchester
A calibration facility has been developed to measure the peak diameter of particles suspended in liquid using differential mobility analysis (DMA). A description of the facility and the features that contribute to measurements with low uncertainties is
On July 11, 2000, the National Institute of Standards and Technology (NIST) andCarnegie-Mellon University (CMU) held a joint workshop with industry at theNIST, Gaithersburg, MD, campus on Automation Technologies for Construction, Field Measurement, and
The National Institute of Standards and Technology Construction Metrology and Automation Group is conducting ongoing research to provide standards, methodologies, and performance metrics that will assist the development of advanced systems to automate
The National Institute of Standards and Technology (NIST) has been conducting research in crane automation since the mid 1980 s. A robotic crane (RoboCrane) based on an inverted, cable actuated Stewart-Gough platform principle was invented at NIST at that
This year, the National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards (NBS), turned 100 years old. During that century, NBS/NIST measurement technology has done much to enable the business of fire safety. Today
This paper presents an improved method to design buildings to resist high wind. The method consists of using databases of pressures measured in wind tunnel tests and applying these pressures in nonlinear structural analyses, hence the name nonlinear
The earliest work in the United States on the development of portland cement standards was conducted by the American Society of Civil Engineers in the late 1800s. ASTM and the Federal government joined the effort in the early 1900s and ASTM C9 American
William E. Mell, Samuel Manzello, Alexander Maranghides
Fire spread through suspended vegetation, such as tree crowns, is a basic component of wildland fires. Most models of fire spread do not resolve the burning of individual trees. Instead, fire spread through a forest canopy, representing a collection tree
Brancusi s Endless Column (T rgu-Jiu, Romania) is an interesting case study in bluff body aeroelasticity. It has been referred to as aeroelastically indifferent owing to its remarkable aeroelastic stability with respect to galloping. The column s behavior
Brancusi s Endless Column (T rgu-Jiu, Romania) has been referred to as aeroelastically indifferent owing to its remarkable aeroelastic stability. The column s behavior has been attributed to its unconventional shape. However, calculations presented here
Experimental measurements of laser-induced ionization were performed for ethene/air premixed flames operated near the soot inception point. Soot was ionized using a pulsed laser operated at 532 nm. The ionization signal was collected with a tungsten
The paper presents a brief overview of the National of Institute of Standards and Technology's (NIST) efforts towards standardizing methods for the performance evaluation of 3D imaging systems. 3D imaging systems are used to rapidly capture (thousands of
Alan M. Lytle, Sandor S. Szabo, Geraldine S. Cheok, Kamel S. Saidi, Richard J. Norcross
The NIST Construction Metrology and Automation Group (CMAG), in cooperation with the NIST Intelligent Systems Division (ISD), is developing performance metrics and standard tests for the evaluation of 3D imaging systems used in autonomous mobility
In designing a building that will perform reliably over a specified time, a designer needs a vast amount of information about the performance of the available materials and components (hereafter referred to, collectively, as maerials) in the likely service
This document specifies the ISO 10303 application protocol (AP) Edition 2 for the exchange of spatial configuration information of process plants, plant systems and ship systems. This includes shape characteristics, spatial arrangement characteristics, and
Aline Granier, Tinh Nguyen, Alexander J. Shapiro, Jonathan W. Martin
The performance of polyurethane (PU) composites reinforced by isocyanate-functionalized multi-walled carbon nanotubes (NCO-fMWCNT) and isocyanate-functionalized carbon nanofibers (NCO-fCNF) has been investigated. NCO-fCNTs and NCO-fCNF were prepared using
A successful simulation of compartment fires using computational fluid dynamics (CFD) must be able to adequately model three significant phenomena: the combustion of fuel, the mixing caused by the buoyancy of hot gasses, and the removal of heat from the
Richard Gann, Star R. Burgess, Kathleen C. Whisner, Paul A. Reneke
As a result of the 1987 Montreal Protocol on Substances that Deplete the Ozone Layer and the 1990 U.S. Clean Air Act, there began a movement toward phaseout of the use of the halon fire suppressants. The HOTWC was initiated as a forum for such contributory