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Search Publications

NIST Authors in Bold

Displaying 16001 - 16025 of 73697

Methods and Tools for Performance Assurance of Smart Manufacturing Systems

June 2, 2016
Author(s)
Deogratias Kibira, Katherine C. Morris, Senthilkumaran Kumaraguru
The emerging concept of smart manufacturing systems is defined in part by the introduction of new technologies that are promoting rapid and widespread information flow within the manufacturing system and surrounding its control. These systems can deliver

Precise methane absorption measurements in the 1.64 micron spectral region for the MERLIN mission

June 2, 2016
Author(s)
Joseph T. Hodges, Stephen E. Maxwell, Zachary D. Reed, Hong Lin, Keeyon Sung, Malathy Devi, Thomas Warneke, Peter Spietz, Ha Tran, Thibault Delahaye
In this article we describe a high-precision laboratory targeting the R(6) manifold of the 2ν3 band of 12CH4. Accurate physical models of this absorption spectrum will be required by the Franco-German, Methane Remote Sensing LIDAR (MERLIN) space mission

Reliability-based structural performance indicators for structural members

June 2, 2016
Author(s)
Therese P. McAllister, Michel Ghosn, Dan Frangopol, Mahendra Shah, Sophia Diniz, Bruce Ellingwood, Lance Manuel, Fabio Biondini, N. Catbas, A. Strauss, Z. Zhao
The implementation of reliability methods for designing new structures and assessing the safety and evaluating the performance of existing structures and infrastructure systems has gained widespread acceptance. Most importantly, reliability-based design

Risk-based decision making for sustainable and resilient infrastructure

June 2, 2016
Author(s)
Therese P. McAllister, Zoubir Lounis
The development of sustainable and resilient infrastructure systems is a challenging task that involves a broad range of economic, social and environmental performance indicators, which need to be considered over the system life cycle. Conventional

Solute-derived Thermal Stabilization of Nano-sized Grains in Melt-Spun Aluminum

June 2, 2016
Author(s)
Andrew H. Baker, Paul G. Sanders, Eric Lass, Deepak Kapoor, Steve L. Kampe
Thermal stability of nanograined metals can be difficult due to the large driving force for growth that arises from the significant boundary area constituted by the nanostructure. Kinetic approaches for stabilization of the nanostructure effective at low

Test Methods for Robot Agility in Manufacturing

June 2, 2016
Author(s)
Anthony J. Downs, William S. Harrison, Craig I. Schlenoff
In today's world of fast-paced change and ever evolving technologies, there is constant pressure on manufactures for agile production. The need for customization and robustness require today's manufacturers to shift production goals quickly, and address

A SIMPLE METHOD OF ENHANCING THE ROBUSTNESS OF R/C FRAME STRUCTURES

June 1, 2016
Author(s)
Yihai Bao, Hai S. Lew, Fahim Sadek, Joseph A. Main
A simple debonding technique is proposed to reduce or eliminate strain localization in reinforcing bars in the region of wide flexural cracks in RC beams to enhance the resistance of RC buildings to disproportionate collapse (also referred to as

Acceleration and Parallelization of ZENO/Walk-on-Spheres

June 1, 2016
Author(s)
Derek Juba, Walid Keyrouz, Michael V. Mascagni, Mary C. Brady, Michael Mascagni
This paper describes our on-going work to accelerate ZENO, a software tool based on Monte Carlo methods (MCMs), used for computing material properties at the nanoscale. ZENO employs three main algorithms: (1)Walk on Spheres (WoS), (2)interior sampling, and

An Improved Method Of Modeling Infiltration In Commercial Building Energy Models

June 1, 2016
Author(s)
Lisa C. Ng, Steven J. Emmerich, Andrew K. Persily
Different strategies for improving building envelope thermal performance are being implemented in commercial building design and construction as well as being incorporated into ASHRAE standards and other design requirements. The energy impacts of

Capacitive Displacement Sensor for Detecting Planar Submicrometer Motion

June 1, 2016
Author(s)
Svetlana Avramov-Zamurovic1, Jae M. Yoo, Nicholas Dagalakis
This paper describes the design of a very simple displacement sensor that measures the displacement of an object by measuring the change in capacitance due to the movement of this object in the sensor fringing electric field. Two sensor geometries with

Energetic Electrons Driven in the Polarization Direction of an Intense Laser Beam Incident Normal to a Solid Target

June 1, 2016
Author(s)
Lawrence T. Hudson, John F. Seely, Nino R. Pereira, H. Chen, G.J. Williams, R.P. Drake, C.C. Kuranz, C.A. Di Stefano, J. Park
Experiments were performed at the LLNL Titan laser to measure the propagation direction of the energetic electrons that were generated during the interaction of the polarized laser beam with solid targets in the case of normal incidence. The energetic

In Situ Structural Characterization of Ageing Kinetics in Aluminum Alloy 2024 across Angstrom-to-Micrometer Length Scales

June 1, 2016
Author(s)
Fan Zhang, Lyle E. Levine, Andrew J. Allen, Carelyn E. Campbell, Adam Abel Creuziger, Nataliya Kazantseva, Jan Ilavsky
The precipitate structure and precipitation kinetics in an Al-Cu-Mg alloy (AA2024) aged at 190 °C, 208 °C, and 226 °C have been studied using ex situ TEM and in situ synchrotron-based, combined ultra-small angle X-ray scattering, small angle X-ray

LABORATORY FILTER MEDIA

June 1, 2016
Author(s)
Thomas J. Bruno
Filtration is the physical separation of a component or components (which may be solid, liquid, gel, etc.) from a matrix stream (which is usually a fluid), without causing any other changes such as chemical reactions. In the laboratory, filtration is most

Premixed flame inhibition by CF3Br and C3H2F3Br (2-BTP)

June 1, 2016
Author(s)
John Pagliaro, Gregory T. Linteris, Nicolas Bouvet
The un-stretched burning velocities and Markstein lengths of premixed CH4- and C3H8-air flames with added C3H2F3Br (2-BTP) or CF3Br (Halon 1301), have been studied experimentally and numerically. The predicted un-stretched burning velocities, using a
Displaying 16001 - 16025 of 73697
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