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NIST Authors in Bold

Displaying 101 - 125 of 3839

Fire Safety Risks Associated with Leaks in Hydrogen Systems.

December 3, 2009
Author(s)
Jintao Zhang
… Hydrogen presents several unusual fire hazards, including … and computations to identify the hazards of leaks in hydrogen systems that could result in combustion. The work seeks to identify the types of hydrogen leaks that can support flames. A small leak in a …

Fatigue Crack Growth Modeling of Pipeline Steels in High Pressure Gaseous Hydrogen

October 21, 2013
Author(s)
Robert L. Amaro, Elizabeth S. Drexler, Andrew J. Slifka
… Hydrogen will likely play a key role in a future clean energy … fundamental understanding of the deleterious effects of hydrogen on the fatigue and fracture properties of pipeline … and lifetime prediction of pipeline steels in gaseous hydrogen are yet to be developed and implemented into …

Strain-life performance in hydrogen of DOT pressure vessel steel

November 7, 2022
Author(s)
May Ling Martin, Peter Bradley, Damian Lauria, Robert L. Amaro, Matthew Connolly, Andrew Slifka
… steel was conducted in air and in a high-pressure gaseous-hydrogen environment. Hydrogen causes an order of magnitude decrease in lifetime … the same strain-amplitudes. This decrease in lifetime in hydrogen is accompanied by various effects, such as a shift … hydrogen, fatigue, strain-life, damage …

Standardized Equation for Hydrogen Gas Densities for Fuel Consumption Applications

April 3, 2006
Author(s)
Eric Lemmon, Marcia L. Huber, Daniel G. Friend, Carl Paulina
… methods for evaluating the consumption of gaseous hydrogen fuel in vehicle applications involves the … fixed, volume. This method requires the density of hydrogen. A current standard for the thermodynamic properties of hydrogen is provided by a 32-term equation of state, in which …

Humidity Standard of Compressed Hydrogen for Fuel Cell Technology

May 2, 2008
Author(s)
Peter H. Huang
… Compressed hydrogen is one of the most important utilities in fuel cell industry. For the specification of hydrogen fuel quality and for the design of humidification … equipment, knowledge of the equilibrium water content of hydrogen as a function of temperature and pressure is …

Towards a quantum repeater using a surface-trap-integrated microcavity and trapped ions

November 18, 2025
Author(s)
Lindsay Sonderhouse, Margaret Bruff, Kaitlyn David, Daniel Slichter, Dietrich Leibfried
… Trapped ions are a leading candidate for the "stationary qubits" of a … quantum repeater, trapped ions, optical cavity, quantum networking, surface electrode … using a surface-trap-integrated microcavity and trapped ions … using a surface-trap-integrated microcavity and trapped ions …

Hydrogen Spillover Effect of Pt-Doped Activated Carbon Studied by Inelastic Neutron Scattering

August 24, 2011
Author(s)
Cheng-Si Tsao, Yun Liu, Haw-Yeu Chuang, Huan-Hsiung Tseng, Tsan-Yao Chen, Chien-Hung Chen, Ming-Sheng Yu, Qixiu Li, Angela Lueking, Sow-Hsin Chen
… (INS) method to directly monitor the change of molecular hydrogen in the Pt-doped activated carbon (Pt/AC) samples and provide very conclusive evidence that significant hydrogen atoms can diffuse to the carbon surface at room … method is uniquely capable of revealing the state of the hydrogen (either atomic or molecular forms). The INS result …

Fatigue crack growth rates of API X70 pipeline steel in a pressurized hydrogen gas environment

December 21, 2013
Author(s)
Elizabeth S. Drexler, Andrew J. Slifka, Robert L. Amaro, Nicholas Barbosa, Damian S. Lauria, Louis E. Hayden, Douglas G. Stalheim
… Hydrogen is known to have a deleterious effect on metal, but … still be the most cost- effective means of transporting hydrogen gas and sour gas. Rather, it is the codes and … the design of pipelines and account for the effect of hydrogen. It has been shown repeatedly that the strength of …

Ion-Molecule Reactions and Ion Kinetics in DC Townsend Discharges in Dielectric Gases

January 1, 1999
Author(s)
MVVS. Rao, James K. Olthoff
… and kinetic energies of ions are determined by ion-molecule collisions experienced by ions as they are … as charge-exchange collisions, collisional detachment, and ion conversion, we have measured the kinetic-energy … measurements, and the effective cross sections for the ion-molecule reactions, in some cases, may be calculated. The …

Fundamental Equations of State for Parahydrogen, Normal Hydrogen, and Orthohydrogen

September 4, 2009
Author(s)
Jacob W. Leachman, Bryce Jacobson, Steven Penoncello, Eric Lemmon
… If the potential for a boom in the global hydrogen economy is realized, there will be an increase in the need for accurate hydrogen thermodynamic property standards. Based on current … fundamental equations of state for parahydrogen, normal hydrogen, and orthohydrogen were developed to replace the …

Evidence of Molecular Hydrogen Trapped in Two-Dimensional Layered Titanium Carbide-Based MXene

July 17, 2017
Author(s)
Naresh C. Osti, Michael Naguib, Madhu Sudan Tyagi, Yury Gogotsi, Alexander I. Kolesnikov, Eugene Mamontov
… The presence of molecular hydrogen at ambient conditions in a MXene (Ti 3 C 2 T x )) … meV, providing a clear indication of the presence of para hydrogen in the MXene synthesized using 48% HF and annealed … the peak width due to the mobility of the molecular hydrogen in confinement. The presence of molecular hydrogen …

A Clock Ensemble Using Only Active Hydrogen Masers

January 31, 2017
Author(s)
Thomas E. Parker, Stefania Romisch
… as well as the post-processed scale TP162, both contain hydrogen masers and commercial cesium frequency standards. … standards are much nosier in the short term than the hydrogen masers and consequently have very little short-term … on the clock ensemble at NIST. In the first case both hydrogen masers and cesium standards were used, and in the …

Direct Imaging of Static and Dynamic Ion Cloud Distributions in an Electron Beam Ion Trap

February 1, 2000
Author(s)
James V. Porto
… directly image highly charged ions within an electron beam ion trap (EBIT). Using an intensified CCD camera, we have the capability to measure both static and dynamic ion cloud distributions. The technique provides information … by other methods. Static images can be used to determine ion temperatures and the degree of overlap between the …

Unification of hydrogen-enhanced damage understanding through Strain-Life Experiments and Modeling

June 20, 2019
Author(s)
May L. Martin, Christopher P. Looney, Peter E. Bradley, Damian S. Lauria, Robert L. Amaro, Andrew J. Slifka
… testing of a 4130 pressure vessel steel was conducted in hydrogen gas through the careful adaptation of an existing hydrogen-gas mechanical testing apparatus. The strain-life mechanical results reveal that hydrogen has a significant effect on the strain-life, and …

Optical Measurements of OLED Panels for Lighting Applications

July 22, 2013
Author(s)
Tokihisa Kawabata, Yoshi Ohno
Optical characteristics of OLED panels have been investigated for the purpose of developing a test method for OLED panels for lighting applications. The electrical characteristics, total luminous flux and chromaticity (x, y), and their dependence on supply

Economic impact of applying high strength steels in hydrogen gas pipelines

June 17, 2015
Author(s)
Jeffrey W. Sowards, James R. Fekete, Robert L. Amaro
… will likely be employed extensively to transport gaseous hydrogen in support of a future clean energy economy. To date, a hydrogen-specific cost analysis of pipeline installation has … in order to quantify cost differentials associated with hydrogen pipeline installation relative to (a) natural gas …

Metallo-N-Heterocycles - A New Family of Hydrogen Storage Material

April 1, 2020
Author(s)
Khai Chen Tan, Yang Yu, Ruting Chen, Teng He, Zijun Jing, Qijun Pei, Jintao Wang, Yong Shen Chua, Anan Wu, Wei Zhou, Hui Wu, Ping Chen
… Storing hydrogen efficiently in condensed material under mild … technique challenge. Here, we developed a new family of hydrogen storage material spanning across the domain of … alkline earth metals to tune the thermodynamic property of hydrogen storage. Theoretical calculations reveal that the …

HYDROGEN PIPELINE RESEARCH AT NIST

March 31, 2008
Author(s)
Thomas A. Siewert, Joseph D. McColskey, Angelique N. Lasseigne
… greatly expanded its efforts in support of the use of hydrogen as a fuel.   Various NIST divisions have started … (Materials Reliability) has focused on the issues with hydrogen embrittlement of conventional pipeline and storage … hydrogen, mechanical testing, permeation, pipelines, test …

Equilibrium Structure of Hydrogen-Bonded Polymer Blends

November 1, 1998
Author(s)
C Zhou, Erik K. Hobbie, Barry J. Bauer, Charles C. Han
… neutron scattering (SANS). Miscibility is induced via hydrogen bonding between the DPS (OH) hydroxyl group and PBMA … attribute to the short-range site specific nature of the hydrogen bond interaction. … hydrogen bond, polymer blend, SANS … Equilibrium Structure of Hydrogen-Bonded Polymer Blends …

Hydrogen Embrittlement Susceptibility and Fracture Toughness Measurements of Welded X65M Pipeline Steels

November 14, 2024
Author(s)
Newell Moser, Zack Buck, Nicholas Derimow, May Ling Martin, Damian Lauria, Enrico Lucon, Peter Bradley, Matthew Connolly
… Hydrogen is known to deteriorate the mechanical performance of steels (i.e., hydrogen embrittlement). The welding processes involved in … contacts to assess the susceptibility of seam welds to hydrogen embrittlement; these three pipes are made from API … hydrogen, weld, fracture, piping …

Development of a combinatorial characterization scheme for high-throughput investigations of hydrogen storage materials.

December 16, 2011
Author(s)
Jason Hattrick-Simpers, Z. Tan, H. Oguchi, Chun Chiu, Edwin J. Heilweil, James E. Maslar, Leonid A. Bendersky
… reliably increase the throughput of materials measured for hydrogen storage properties, a complete high-throughput … scheme has been developed that accurately measures the hydrogen storage properties of materials in quantities … wedge samples using normalized IR emissivity imaging. The hydrogen storage properties of promising samples are …

Color Quality Metrics Recent Progress and Future Perspective

July 30, 2016
Author(s)
Yoshihiro Ohno
The color quality of light sources for lighting includes the effects of white light chromaticity, as well as color rendition characteristics, including color fidelity and the aspects related to color preference and perception. In this paper, the current
Displaying 101 - 125 of 3839
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