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Search Publications

NIST Authors in Bold

Displaying 26 - 50 of 2915

Measurement of heat capacity and enthalpy of formation of Nickel Silicide using Nano-calorimetry

November 2, 2009
Author(s)
Ravi Kummamuru, Lito De La Rama, Liang Hu, Mark D. Vaudin, Mikhail Efremov, Martin L. Green, David A. LaVan, Leslie Allen
… characterization of energetics of the reaction between nickel and silicon thin films using differential scanning … A large exothermic dip in heat capacity attributed to nickel silicide formation is found along with indications of … °C were found to contain a mixture of NiSi and the theta- nickel silicide (hexagonal - Ni2Si) phase, while samples …

Results of the NIST National Ball Plate Round Robin

January 1, 1997
Author(s)
Gregory W. Caskey, Steven D. Phillips, Bruce R. Borchardt
… This report examines the results of the ball plate round robin administered by NIST. The round robin was … measuring machines. Measurements of a two-dimensional ball plate (240 mm by 240 mm) on 41 coordinate measuring machines … estimate their measurement error on one or more of the ball plate spheres. … Gregory W. Caskey , Steven D. Phillips , …

Dominant factors for fracture at the micro-scale in electrodeposited nickel alloys

August 1, 2020
Author(s)
May L. Martin, Li-Anne Liew, David T. Read, Todd Christensen, Frank W. DelRio, John Geaney
… Two different LIGA electrodeposited nickel alloys displayed distinct fracture modes after meso- … , John Geaney … Sensors and Actuators A-Physical … LIGA nickel alloys, fracture, small-scale testing … Dominant …

Radiometer Phase Retardation Plate Evaluation Using Planar Near-field Antenna Measurements

October 19, 2003
Author(s)
Jeffrey R. Guerrieri, Katherine MacReynolds, Douglas T. Tamura
… The plates were tested at 10.7 and/or 18.7 GHz. The plate produces a phase shift between perpendicular field … Association … 90 degree rotation, phase retardation plate, phase shift, polarimetric radiometer … Proc., Antenna … Meas. Tech. Asoc. Symp. … Radiometer Phase Retardation Plate Evaluation Using Planar Near-field Antenna Measurements …

CODATA Recommended Values of the Fundamental Physical Constants: 2002

October 16, 2008
Author(s)
Peter J. Mohr, Barry N. Taylor
… Chart of Fundamental Constants NIST SP 961, updating existing … , Barry N. Taylor … Special Publication (NIST SP) - 961 … fundamental constants … CODATA Recommended Values of the Fundamental Physical Constants: 2002 …

Metrological Traceability for Guarded-Hot-Plate Apparatus

May 9, 2013
Author(s)
Robert R. Zarr
… traceability for measurement results from guarded-hot-plate apparatus consistent with policy at the National … Institute of Standards and Technology 1016 mm guarded-hot-plate appara-tus is described. The approach is suitable for … Thermal Expansion Symposium … calibration, guarded-hot-plate apparatus , metrological traceability, thermal …

Fundamentals of Small Business Information Security

March 15, 2017
Author(s)
Celia Paulsen, Gregory A. Witte, Larry Feldman
… 7621, Revision 1: Small Business Information Security: The Fundamentals. The bulletin presents the fundamentals of a small business information security … - … small business, information security, cybersecurity, fundamentals … Fundamentals of Small Business Information …

Measurement of yield stress for concentrated suspensions using a plate device

January 1, 2010
Author(s)
Min-Hong Zhang, Chiara C. Ferraris, Huaning Zhu, Vincent Picandet, Max A. Peltz, Paul E. Stutzman, Daniel De Kee
… in general and for a cementitious material in particular. A plate device is a recent development in the measurement of … far below most rotaional rheometers. This paper present the plate device and the modifications made so that it can be … … RILEM - Materials and Structures Journal … cement paste, plate device, suspension rheology, yield stress, workability …

In Situ Thermography During Laser Powder Bed Fusion of a Nickel Superalloy 625 Artifact with Various Overhangs and Supports

March 12, 2021
Author(s)
Benjamin A. Molnar, Jarred C. Heigel, Eric P. Whitenton
… "In Situ Thermography During Laser Powder Bed Fusion of a Nickel Superalloy 625 Artifact with Various Overhangs and … were acquired during the fabrication of a small nickel superalloy 625 (IN625) artifact using a commercial … (NIST JRES) - … 3D build, Additive manufacturing, IN625, nickel super alloy 625, powder bed fusion, temperature …

Block shear failure of steel gusset plates

July 1, 2010
Author(s)
Chiara Crosti, Dat Duthinh
… guidelines for the load rating of bolted and riveted gusset plates in truss bridges (FHWA, 2009). This paper develops … models capable of predicting the behavior of gusset plates in ten-sion, resulting in possible failure by block … for the block shear strength of riveted and bolted gusset plates. For a variety of geometries, the Load and Resistance …

Continuum-based free vibration of circular trigonal and isotropic plates

May 28, 2013
Author(s)
Ward L. Johnson, Paul R. Heyliger
… behavior of completely unrestrained elastic circular plates with trig- onal and isotropic material symmetry is … material, Ritz method, trigonal crystals, trigonal plates, vibrational modes … Continuum-based free vibration of circular trigonal and isotropic plates …

Stable Nitride Precipitation in Additively Manufactured Nickel Superalloys

April 6, 2022
Author(s)
James Zuback, Fan Zhang, Andrew Iams, Lucille Giannuzzi, Todd Palmer
… of nitrogen, wrought and welded solid solution strengthened nickel superalloys usually contain carbides and … tools and databases, indicating a sparsity of data for nickel superalloys. Even after hot isostatic pressing, many … … Journal of Alloys and Compounds … Additive manufacturing, Nickel superalloy, Synchrotron X-ray diffraction (XRD), …

Instrumented Charpy Tests at 77 K on 316L Stainless Steel Welded Plates

December 20, 2021
Author(s)
Enrico Lucon, Jake Benzing
… from the center of four 316L welded stainless steel plates, each produced by a different vendor. Although the plates were produced in accordance with the same … instrumented Charpy tests, liquid nitrogen, welded plates … Instrumented Charpy Tests at 77 K on 316L Stainless …

Multiscale Green's function for deflection of graphene lattice

June 2, 2008
Author(s)
B. Yang, Vinod Tewary
Fundamental deflection behavior of an infinite two-dimensional graphene lattice subjected to a transverse point force has been analyzed using lattice statics and the continuum Green's functions. An analytic expression has been derived for the lattice

From Microparticles to Nanowires and Back: Radical Transformations in Plated Li Metal Morphology Revealed via in situ scanning electron microscopy

February 3, 2018
Author(s)
Alexander Yulaev, Vladimir P. Oleshko, Paul M. Haney, Jialin Liu, Yue Qi, Talin Alec, Leite Marina, Andrei A. Kolmakov
… voltage vs. standard hydrogen electrode. However, stable plating and stripping of Li metal in contact with a solid … To better understand the fundamental mechanism of Li metal plating, we use operando electron microscopy and Auger … to Nanowires and Back: Radical Transformations in Plated Li Metal Morphology Revealed via in situ scanning …

Quantitative evaluation of digital image correlation as applied to large-scale gusset plate experiments

June 21, 2012
Author(s)
Mark A. Iadicola, Robert S. Zobel, Justin M. Ocel
… the Load and Resistance Factor Design and Rating of Gusset-Plate Connections for Steel Bridges" the Federal High-way … Administration (FHWA) is performing large-scale gusset-plate experiments. The National Institute of Standards and … work focuses on a portion of the DIC measurements for one plate configuration, and presents a preliminary comparison …

Resource Letter FC-1: The physics of fundamental constants

April 1, 2010
Author(s)
Peter J. Mohr, David B. Newell
… theoretical work on the determination of values of certain fundamental physical constants. In this Letter, fundamental physical constants are taken to be the … determined and that they have a well-defined place in a fundamental theory such as quantum mechanics or relativity. …

Combinatorial Study of Nickel-Gold P-Contacts for Blue Indium Gallium Nitride Light-Emitting Diodes

October 12, 2021
Author(s)
M T. Ahrens, E B. Stokes, Albert Davydov, Peter K. Schenck, Abhishek Motayed, T R. Harris, S T. Morton
… efficiency improvement lies in the optimization of the Nickel-Gold composition of the p-type GaN metal contacts. … and performance of LED p-type contacts with varying Nickel-Gold (Ni-Au) compositions. In this work, during the … gallium nitride, indium nitride, light emitting diode, nickel-gold contacts … Combinatorial Study of Nickel-Gold …

Fourier Expansions for a Logarithmic Fundamental Solution of the Polyharmonic Equation

September 28, 2012
Author(s)
Howard S. Cohl
… greater than or equal to the dimension divided by two, a fundamental solution for the polyharmonic equation has … for developing a Fourier expansion of this logarithmic fundamental solution. The first approach is algebraic and … use them to derive the Fourier expansion for a logarithmic fundamental solution of the polyharmonic equation. The …

Thermal Conductivity Measurements of Pyroceram 9606 Using a High-Temperature Guarded-Hot-Plate

October 1, 1997
Author(s)
James Filla, Andrew Slifka
… measured using a steady-state high-temperature guarded-hot-plate over a temperature range of 130 C to 800 C. … James … Thermal Conductivity Conference … conductivity, guarded-hot-plate, high temperature, pyroceram, thermal … Proceedings of … of Pyroceram 9606 Using a High-Temperature Guarded-Hot-Plate …
Displaying 26 - 50 of 2915
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