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Search Publications

NIST Authors in Bold

Displaying 16751 - 16775 of 73697

A defect-driven diagnostic method for machine tool spindles

December 31, 2015
Author(s)
Gregory W. Vogl, M A. Donmez
Simple vibration-based metrics are, in many cases, insufficient to diagnose machine tool spindle condition. These metrics couple defect-based motion with spindle dynamics; diagnostics should be defect-driven. A new method and spindle condition estimation

Design of a 1 DOF MEMS motion stage for a parallel plane geometry rheometer

December 31, 2015
Author(s)
Yong Sik Kim, Nicholas Dagalakis, Chiara C. Ferraris, Svetlana Avramov-Zamurovic1
Rotational rheometers are used to measure paste properties, but the test would take too long to be useful for a quality control (QC) on the job site. In this paper, a new type of rheometer is proposed based on a one degree of freedom (DOF) micro-electro

Effect of Common Faults on the Performance of Different Vapor Compression Systems

December 31, 2015
Author(s)
Zhimin Du, Piotr A. Domanski, William V. Payne
The effect of faults on cooling capacity, COP, sensible heat ratio, and superheat/subcooling temperatures in five split and rooftop systems, which use different types of expansion devices, compressors and refrigerants, are separately compared and analyzed

ThermoData Engine (TDE) Version 10 (Pure Compounds, Binary Mixtures, Ternary Mixtures, and Chemical Reactions): NIST Standard Reference Database 103b

December 31, 2015
Author(s)
Vladimir Diky, Chris Muzny, Alexander Smolyanitsky, Ala Bazyleva, Robert D. Chirico, Joe W. Magee, Eugene Paulechka, Andrei F. Kazakov, Scott Townsend, Eric Lemmon, Michael D. Frenkel, Kenneth Kroenlein
The ThermoData Engine is a software expert system implementing the concept of dynamic data evaluation for thermophysical and thermochemical properties of, primarily, organic compounds. This new release provides a substantially expanded database of

Community Resilience Economic Decision Guide for Buildings and Infrastructure Systems

December 30, 2015
Author(s)
Stanley W. Gilbert, David Butry, Jennifer Helgeson, Robert E. Chapman
This Economic Guide provides a standard economic methodology for evaluating investment decisions aimed to improve the ability of communities to adapt to, withstand, and quickly recover from disasters. The Economic Guide is designed for use in conjunction

The Impact of the Crystallite Orientation Distribution on Exciton Transport in Donor-Acceptor Conjugated Polymers

December 30, 2015
Author(s)
Alexander L. Ayzner, Jianguo Mei, Anthony Appleton, Dean DeLongchamp, Alexandre Nardes, Stephanie Benight, Nikos Kopidakis, Michael F. Toney, Zhenan Bao
Conjugated polymers are widely used materials in organic photovoltaic devices. Owing to their extended electronic wavefunctions, they often form semicrystalline thin films. Although it is known that the polymer crystal orientation plays a large role in

Uncertainty Quantification of Stresses in a Cracked Pipe Elbow Weldment Using a Logistic Function Fit, a Nonlinear Least Squares Algorithm, and a Super-Parametric Method

December 30, 2015
Author(s)
Jeffrey T. Fong, James J. Filliben, Nathanael A. Heckert, Pedro V. Marcal, Robert Rainsberger, Li Ma
In a 3-part series of papers, of which this paper is Part II, we investigate the applicability of the fully quadratic hexa-27 element (see Part I) to four problems of interest to the pressure vessels and piping community: (1) The solid-element-based

Algorithms for Identification of Nearly-Coincident Events in Calorimetric Sensors

December 29, 2015
Author(s)
Bradley K. Alpert, Elena Ferri, Douglas A. Bennett, Marco Faverzani, Joseph W. Fowler, Andrea Giachero, James P. Hays-Wehle, Angelo Nucciotti, Daniel S. Swetz, Joel N. Ullom
For experiments with high arrival rates, reliable identification of nearly-coincident events can be crucial. For calorimetric measurements to directly measure the neutrino mass such as HOLMES, unidentified pulse pile-ups are expected to comprise a leading

Integrating views of properties in models of unit manufacturing processes

December 28, 2015
Author(s)
Peter O. Denno, Duck B. Kim
This paper investigates the potential advantages and pitfalls of directly integrating knowledge expressed as predictive model equations with other process knowledge. The context of this integration is models of unit manufacturing processes. The method

Morphological and Electrical Characterization of MWCNT Papers and Pellets

December 27, 2015
Author(s)
Elisabeth Mansfield, Ari D. Feldman, Ann C. Chiaramonti Debay, John H. Lehman, Alexandra E. Curtin
Six types of multiwall carbon nanotube soot were obtained and prepared into buckypapers by pellet pressing and by filtration into a paper. These samples were evaluated with respect to thickness, compressibility and electrical conductivity. DC conductivity

Chapter 5: Multiferroics

December 24, 2015
Author(s)
William D. Ratcliff, Jeffrey W. Lynn
Multiferroics are insulating materials that are simultaneously magnetically ordered and ferroelectric. From a fundamental standpoint it is interesting to understand the properties and coupling of these two disparate types of order. These materials could

UV-assisted room-temperature chemiresistive NO2 sensor based on TiO2 thin film

December 24, 2015
Author(s)
Ting Xie, Nichole Sullivan, Kristen L. Steffens, Baomei Wen, Guannan Liu, Ratan K. Debnath, Albert Davydov, Romel D. Gomez, Abhishek Motayed
TiO2 thin film based, chemiresistive sensors for NO2 gas which operate at room temperature under ultraviolet (UV) illumination have been demonstrated in this work. The rf-sputter deposited and post-annealed TiO2 thin films have been characterized by atomic
Displaying 16751 - 16775 of 73697
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