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Displaying 276 - 300 of 2915

Time-Resolved Ultrasonic Body Wave Measurements of Material Anisotropy Using a Lensless Line-Focus Transducer

November 1, 1998

Author(s)

Nelson N. Hsu, D Xiang, Gerald V. Blessing

For plate-like sample geometries, a line-focus transducer can be used to detect back-reflected echoes through the thickness of the sample. The interaction of the convergent cylindrically focused probing wave with the material anisotropy produces multiple

Surface mediated assembly of small, metastable gold nanoclusters

May 27, 2013

Author(s)

John M. Pettibone, William A. Osborn, Konrad Rykaczewski, Albert A. Talin, John E. Bonevich, Jeffrey W. Hudgens

… , John E. Bonevich , Jeffrey W. Hudgens … Nanoscale … PPh3, electroless deposition, dissolution, monodisperse products … …

Microstructural Differences as a Function of Specimen Position on Base Plate in Additive Manufactured Nickel Based Super Alloy

July 26, 2016

Author(s)

Yaakov S. Idell, Lyle E. Levine, Carelyn E. Campbell

… Differences as a Function of Specimen Position on Base Plate in Additive Manufactured Nickel Based Super Alloy …

Fundamentals of Geometric Dimensioning and Tolerancing, Part II

August 10, 2023

Author(s)

Jaime Berez, Maxwell R. Praniewicz

… II) provides a contextual and technical introduction to the fundamentals of geometric dimensioning and tolerancing … … Jaime Berez, Maxwell R. Praniewicz … Zenodo … Fundamentals of Geometric Dimensioning and Tolerancing, Part …

Microfabricated fiducial markers for digital image correlation-based micromechanical testing of LIGA Ni alloys

May 7, 2021

Author(s)

Li-Anne Liew, David T. Read, May Martin, Todd R. Christenson, John T. Geaney

… micron-thick LIGA (Lithographie, Galvanformung, Abformung) nickel alloys. Due to the sensitivity of electrodeposited … … LIGA, digital image correlation, MEMS, electrodeposited nickel, tensile test, micromechanics … Microfabricated …

Effects of Processing on Microstructure and Mechanical Properties of Ti-6Al-4V Fabricated using Electron Beam Melting (EBM), Part 1: Distance from Build Plate and Part Size

June 20, 2013

Author(s)

Nikolas W. Hrabe, Timothy P. Quinn, Ryan Kircher

… intra-build processing parameters: distance from the build plate and part size. Microstructure evaluation (qualitative … not found to vary as a function of distance from the build plate, which was hypothesized to be influenced by the build plate preheating associated with the EBM process. Part size …

The Influence of the Melt Pool Structure on the Mechanical Properties of Laser Powder Bed Fusion Nickel Superalloy 625

August 3, 2023

Author(s)

Idan Rosenthal, Jordan Weaver, Shawn P. Moylan

… explores the unique melt pool structure influences on a Nickel superalloy 625. Samples were built with different … on the Mechanical Properties of Laser Powder Bed Fusion Nickel Superalloy 625 …

The Effects of Laser Powder Bed Fusion Process Parameters on Material Hardness and Density for Nickel Alloy 625

August 21, 2018

Author(s)

Christopher U. Brown, Gregor Jacob, Antonio M. Possolo, Carlos R. Beauchamp, Max A. Peltz, Mark R. Stoudt, M A. Donmez

… and material properties (including density) of manufactured nickel super alloy (IN625) using a laser powder bed fusion … Process Parameters on Material Hardness and Density for Nickel Alloy 625 …

Josephson Junctions for Metrology Applications

August 30, 2019

Author(s)

Samuel P. Benz

… that approach quantum-accuracy. … Samuel P. Benz … Fundamentals and Frontiers of the Josephson Effect … …

Evidence of Antiferromagnetism in Ultrathin Metallic (111)-Oriented LaNiO3 Films

December 11, 2024

Author(s)

Margaret Kane, Purnima P. Balakrishnan, Okan Koksal, Megan Holtz, Andreas Suter, Michael R. Fitzsimmons, Chao-Yao Yang, Christoph Klewe, Paige Quarterman, Timothy R. Charlton, Andrew Herzing, Zaher Salman, Thomas Prokscha, Rossitza Pentcheva, Alexander Grutter, Yuri Suzuki

Antiferromagnets with exotic spin textures promise low-power spintronic devices with extremely high operating frequencies and resistance to external perturbations. In particular, the combination of highly tunable correlated electron physics, as in complex

A History of Testing Heat Insulators at the National Institute of Standards and Technology

July 1, 2001

Author(s)

Robert R. Zarr

The history of testing heat insulators at the National Institute of Standards and Technology (formerly the National Bureau of Standards is nearly as long as the history of the institute itself. The participation of the institute in building research

Approximate theoretical model for the five electronic states (? = 5/2, 3/2, 3/2, 1/2, 1/2) arising from the ground 3d9 configuration in nickel halide molecules and for the rotational levels of the two ? = 1/2 states in this manifold

January 25, 2011

Author(s)

Jon T. Hougen

… that arise in the ground electronic configuration of the nickel monohalides. The model assumes that bonding in the nickel halides has the approximate form Ni+X, with an …

Experimental and numerical investigation of fundamental noise on supercontinuum generated in microstructure fiber

June 1, 2003

Author(s)

Kristan L. Corwin, Nathan R. Newbury, Brian Washburn, Scott A. Diddams, J M. Dudley, S. Coen, R Windeler

… and numerical studies of this broadband noise reveal its fundamental and quantum origins: input pulse shot noise and … generation … Experimental and numerical investigation of fundamental noise on supercontinuum generated in …

Calibration of a Calorimeter for Thermal Resistance Measurements of Advanced Insulation Panels

July 1, 2000

Author(s)

M W. Ellis, Arthur H. Fanney, Mark W. Davis

Insulation technologies are being developed to reduce the energy consumption associated with refrigerators, freezers, and the transport of refrigerated products. Among the insulation concepts being explored are powder, foam, glass-fiber-filled evacuated

Quasti-Static and Dynamic Response, and Texture Evolution of Two Overaged Al 7056 Alloy Plates in T761 and T721 Tempers: Experiments and Modeling

January 1, 2020

Author(s)

Angela Y. Ku, Akhtar S. Khan, Thomas H. Gnaupel-Herold

… and texture evolution of two overaged Al 7056 alloy plates, in near peak strength (T761) and near peak aged … and Texture Evolution of Two Overaged Al 7056 Alloy Plates in T761 and T721 Tempers: Experiments and Modeling …

The creep and fracture properties of additively manufactured inconel 625

January 25, 2021

Author(s)

Kwang-Tae Son, Thien Q. Phan, Lyle Levine, Kyu-Sik Kim, Kee-Ahn Lee, Magnus Ahlfors, Michael E. Kassner

… High temperature creep tests of additively manufactured (AM) nickel-based superalloy Inconel 625 (IN 625) and wrought 625 … Lee, Magnus Ahlfors, Michael E. Kassner … Acta Materialia … nickel-based superalloys, laser powder bed fusion, creep, …

High-Temperature Guarded-Hot-Plate and Pipe Measurements: 2nd Operators Workshop (March 19-20, 2012) Co-sponsored by ASTM Committee C16 on Thermal Insulation

November 21, 2012

Author(s)

Robert R. Zarr, Thomas Whitaker, Frank Tyler

… Note (NIST TN) - 1764 … high temperature, guarded hot plate, pipe, measurements, workshop … High-Temperature Guarded-Hot-Plate and Pipe Measurements: 2nd Operators Workshop (March …

The NIST Watt Balance: Recent Results and Future Plans

March 1, 1999

Author(s)

David B. Newell, Richard L. Steiner, Edwin R. Williams

The last remaining SI base unit defined by an artifact is the kilogram. The NIST watt balance has been designed to measure the ratio of mechanical to electrical power, linking the artifact kilogram, the meter, and the second to the practical realizations

Uniaxial Crushing of Sandwich Plates Under Air Blast: Influence of Mass Distribution

December 8, 2007

Author(s)

Joseph A. Main, George A. Gazonas

… investigates the uniaxial crushing of cellular sandwich plates under air blast loading using analytical and … of Solids and Structures … Uniaxial Crushing of Sandwich Plates Under Air Blast: Influence of Mass Distribution …

A fundamental equation of state for the calculation of thermodynamic properties of chlorine

May 16, 2021

Author(s)

Monika Thol, Stefan Herrig, Roland Span, Eric Lemmon

… A fundamental equation of state is presented for the … of state, Helmholtz energy, thermodynamic properties … A fundamental equation of state for the calculation of …

Neutron Collimation With Microchannel Plates: Calibration of Existing Technology and Near

April 1, 2007

Author(s)

A S. Tremsin, Daniel S. Hussey, David L. Jacobson, Muhammad D. Arif, Robert Gregory Downing, W B. Feller, David F. Mildner

… can be manufactured from Gd- or B-doped microchannel plates (MCPs). Structures only a few mm thick have very …

Fundamental phase noise on supercontinuum generated in microstructure fiber: limits on frequency metrology

May 16, 2004

Author(s)

Brian Washburn, Nathan R. Newbury

… of a frequency comb that employs microstructure fiber. This fundamental phase noise arises from amplification of the … … Tech. Dig., Conf. on Lasers and Electro-Optics (CLEO) … Fundamental phase noise on supercontinuum generated in …

A Suspended Fabry-Perot Interferometer for Determining the Newtonian Constant of Gravitation

January 1, 2001

Author(s)

Harold V. Parks, D S. Robertson, A M. Pattee, J E. Faller

Of all the fundamental constants of nature, the Newtonian constant of gravitation, G, has been one of the most difficult to measure. The current CODATA value of G has an uncertainty of 1.5 parts in 1000. Although recent experiments have produced values

Uncertainty Analysis of Thermal Transmission Properties Determined by ASTM C 177

March 1, 2010

Author(s)

Robert R. Zarr

An uncertainty analysis for steady-state thermal transmission properties determined by the National Institute of Standards and Technology (NIST) 1016 mm Guarded-Hot-Plate apparatus is presented for fibrous-glass blanket and expanded polystyrene board. The

1998 CODATA Recommended Values of the Fundamental Constants of Physics and Chemistry [Poster]

January 1, 2001

Author(s)

Peter J. Mohr, Barry N. Taylor

… conversion factors, data analysis, electrical units, fundamental constants, Josephson effect, least-squares … quantum Hall effect … 1998 CODATA Recommended Values of the Fundamental Constants of Physics and Chemistry [Poster] …

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