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NIST Authors in Bold

Displaying 1 - 25 of 1456

Modification of Existing Welded Steel Moment Frame Connections for Seismic Resistance

May 1, 2001
Author(s)
John L. Gross, M D. Engelhardt, Chia-Ming Uang, K Kasai, N Iwankiw
… post-earthquake fire and lifelines and on moment-resisting steel frames. In the area of moment-resisting steel frames damaged in the Northridge earthquake, BFRL, … engineers, conducted a survey and assessment of damaged steel buildings and jointly funded the SAC (Structural …

Characterization of Nanostructured Tungsten Heavy Alloy Produced by Double Ball Milling

May 1, 1999
Author(s)
Frank S. Biancaniello, Stephen D. Ridder, Maureen E. Williams, Rodney D. Jiggetts, L S. Magness
… Tungsten powder was ball milled in a controlled atmosphere … consolidated. The metallic binder phase milled with the tungsten is known to exhibit stress induced martensite. The … phase combined with the nanostructure of the resulting tungsten powder composite show promise for enhanced …

Microstuctural Characterization of Hardened Steel by Nondestructive Methods

July 1, 1997
Author(s)
P T. Purtscher, B Igarashi, Donna C. Hurley, K W. Hollman
… tempered martensitic microstructures like 4340, 01 tool steel, and A710. No one method can characterize the … Proceedings of the Mechanical Working and Steel Processing Conference … Mechanical Working and Steel Processing, Conference ||New Metal Forming Processes| …

Powder Metallurgy High Nitrogen Stainless Steel

December 1, 1999
Author(s)
Frank S. Biancaniello, Rodney D. Jiggetts, Richard E. Ricker, Stephen D. Ridder
… austenitic stainless steel, high nitrogen steel, improved structural and corrosion proper, modeling, … Powder Metallurgy High Nitrogen Stainless Steel …

Application of a CMP Model to Tungsten CMP

October 16, 2008
Author(s)
E W. Paul
… abrasives in the slurry. This paper applies the model to tungsten CMP and describes the chemistry of tungsten CMP in some detail. … CMP, model, Tungsten … Application of a CMP Model to Tungsten CMP …

Effects of Modeling Decisions on the Lateral Performance of Cold-Formed Steel Framed Walls

October 17, 2022
Author(s)
Zhidong Zhang, Matthew Speicher, Amanpreet Singh, Tara Hutchinson, Benjamin Schafer
… protocol for the lateral performance of cold-formed steel (CFS) framed wall-lines that contain both steel sheet sheathed shear walls as well as gravity walls and … Cold-Formed Steel Research Consortium Colloquium … Cold-formed steel, shear wall, seismic … Proceedings of the Cold-Formed Steel Research Consortium Colloquium …

Enhanced connections for improved robustness of steel gravity frames

October 12, 2016
Author(s)
Jonathan Weigand, Joseph Main
… vulnerabilities to collapse have been identified for steel gravity framing systems with conventional gravity … element modeling approach is used to investigate a new steel gravity connection incorporating U-shaped top and seat … Eighth International Workshop on Connections in Steel Structures (Connections VIII) …

Mass Absorption Coefficient of Tungsten and Tantalum

September 1, 2002
Author(s)
Zachary H. Levine
… and J.~J.~Rehr,``Mass absorption coefficient of tungsten and tantalum, 1450 eV -- 2350 eV:experiment, theory, … Grantham, and I. McNulty,``Mass absorption coefficient of tungsten for 1600-2100 eV'',{\it Phys. Rev. B}, {\bf 65}, … Mass Absorption Coefficient, Tantalum, Tungsten …

Recent progress in spectroscopy of tungsten

May 20, 2011
Author(s)
Alexander Kramida
… experimental and theoretical work on spectroscopy of tungsten published since the last critical compilation of the energy levels and spectral lines of highly ionized tungsten [K09]. Since then, 15 new experimental studies were … and energy levels of Li-like through As-like and Pm-like tungsten. Most of the measurements were made using …

Comparison of Rockwell B Hardness (HRB) Tests Using Steel and Tungsten Carbide Ball Indenters

September 1, 2002
Author(s)
Li Ma, Samuel R. Low III, Jun-Feng Song
… tests using the 1.588 mm diameter ball indenters made by steel and tungsten carbide (WC). In this paper, finite elements … is used to simulate the HRB indentation process using steel, tungsten carbide and rigid ball indenters on the same … Comparison of Rockwell B Hardness (HRB) Tests Using Steel and Tungsten Carbide Ball Indenters …

Comparison of Rockwell Hardness B (HRB) Tests Using Steel and Tungsten Carbide Ball Indenters

January 1, 2002
Author(s)
Li Ma, Samuel Low, Jun-Feng Song
… tests using the 1.588 mm diameter ball indenters made by steel and tungsten carbide (WC). In this paper, finite elements … is used to simulate the HRB indentation process using steel, tungsten carbide and rigid ball indenters on the same … Comparison of Rockwell Hardness B (HRB) Tests Using Steel and Tungsten Carbide Ball Indenters …

Near Unity Absorption in Tungsten films

December 19, 2003
Author(s)
Danna Rosenberg, Sae Woo Nam, Aaron J. Miller, Arto Salminen, Erich N. Grossman, Robert E. Schwall, John M. Martinis
… resolving ability and extremely low dark count rate of tungsten transition-edge sensors (TESs) make them excellent … desirable for these applications. By incorporating the tungsten in a stack of elements including a mirror and an … temperature absorption of greater than 95 % in films of tungsten. …

Report of the NIST Workshop on Automated Steel Construction

September 1, 2002
Author(s)
Alan M. Lytle, Kamel S. Saidi, William C. Stone, John L. Gross
… Technology, in cooperation with the American Institute of Steel Construction, sponsored a workshop on automated steel construction. The purpose of the workshop was to … of new technologies to facilitate automating the steel construction process. Desired outcomes included a clear …

Restructuring of Tungsten Thin Films Into Nanowires and Hollow Square Cross-Section Microducts

November 1, 2005
Author(s)
P. M. Parthangal, Richard E. Cavicchi, Christopher B. Montgomery, Shirley Turner, Michael R. Zachariah
… the growth of nanowires and unusual hollow microducts of tungsten by thermal treatment of tungsten films in a RF H2/Ar plasma at temperatures between … lengths between 50-300 nm were formed directly from the tungsten film, while under certain specific operating …

Effects of Steel and Tungsten Carbide Ball Indenters on Rockwell Hardness Measurements

March 1, 2006
Author(s)
Li Ma, Samuel R. Low III, J L. Fink
… For the Rockwell scales that use a ball indenter, either a steel or tungsten carbide (WC) ball indenter is permitted to be used … on whether the ball indenter that is used is made of steel or WC. In this paper, finite element analysis (FEA) is … Effects of Steel and Tungsten Carbide Ball Indenters on Rockwell …

Effect of Steel and Tungsten Carbide Ball Indenters on Rockwell Hardness Tests

November 11, 2004
Author(s)
Li Ma, Samuel R. Low III, J L. Fink
… For the Rockwell scales that use a ball indenter, either a steel or tungsten carbide (WC) ball indenter is permitted to be used … occur in Rockwell hardness tests depending on whether a steel or WC ball is used. In this paper, finite element … Effect of Steel and Tungsten Carbide Ball Indenters on Rockwell …

Lateral torsional buckling of steel W-beams subjected to localized fires

September 1, 2013
Author(s)
Chao Zhang, John L. Gross, Therese P. McAllister
… to assess the lateral torsional buckling capacity of steel beams in fire are based on the assumption of uniform steel temperature. This paper investigates the effect of … gradients on the lateral torsional buckling behavior of steel wide flange (W) beams in fire conditions. The effects …

Behavior of Unrestrained and Restrained Steel Columns Surrounded by Localized Fire

December 12, 2014
Author(s)
Chao Zhang, John L. Gross, Therese P. McAllister, Guo-Qiang Li
… open-plan compartments. Temperatures of gas and exposed steel columns in localized fires are not uniform. Current … paper is one of two independent papers on the behavior of steel columns subjected to localized fire. In this paper, the buckling behavior of steel columns surrounded by a fire source is investigated. A …

Behavior of Axially Loaded Steel Short Columns Subjected to A Localized Fire

June 23, 2015
Author(s)
Chao Zhang, Lisa Y. Choe, Mina S. Seif
… design approaches are based on uniform heating conditions. Steel short columns in real buildings may be exposed to … res. This paper investigates numerically the behavior of steel short columns subjected to a localized re. The e ffect … condition on the buckling temperature of axially loaded steel short columns was studied. Simple thermal models were …

Role of Ion-Beam Processing Time in the Formation and Growth of the High-Nitrogen Phase in Austenitic Stainless Steel

November 1, 2000
Author(s)
D L. Williamson, P J. Wilber, F R. Fickett, S Parascandola
… A systematic series of AISI-316 stainless steel samples has been prepared as a function of exposure … austenite, ion implantation, magnetics, MFM, stainless steel, surface modification … Surface Engineering of Stainless Steels; Stainless Steel 2000 | | | Manley Publications for the Institute of …

Mass Absorption Coefficient of Tungsten for 1600-2100 eV

February 1, 2002
Author(s)
Zachary H. Levine, S Grantham, I McNulty
… photon energies from 1606 eV to 2106 eV was measured for tungsten using thin film samples and a synchrotron source. … This region includes the M IV and M V edges. The two tungsten films had thicknesses of 107.7 10 nm and 51.5 10 nm; … through the two samples, i.e., through a net 56.2 14 nm of tungsten, and some additional constant factors. The M V,IV …

Mass Absorption Coefficient of Tungsten, 1606-2100 eV

January 1, 2002
Author(s)
Zachary H. Levine, S Grantham, I McNulty
… photon energies from 1606 eV to 2106 eV was measured for tungsten using thin film samples and a synchrotron source. … This region includes the M IV and M V edges. The two tungsten films had thicknesses of 107.7 10 nm and 51.5 10 nm; … through the two samples, i.e., through a net 56.2 14 nm of tungsten, and some additional constant factors. The M V,IV …

Mass Absorption Coefficient of Tungsten, 1600 eV to 2100 eV

January 24, 2002
Author(s)
Zachary H. Levine, S Grantham, I McNulty
… photon energies from 1606 eV to 2106 eV was measured for tungsten using thin film samples and a synchrotron source. … This region includes the M IV and M V edges. The two tungsten films had thicknesses of 107.7 10 nm and 51.5 10 nm; … through the two samples, i.e., through a net 56.2 14 nm of tungsten, and some additional constant factors. The M V,IV …
Displaying 1 - 25 of 1456
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