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Displaying 76 - 100 of 3755

Evaluating a Natural Gas Pipeline Steel for Blended Hydrogen Service

March 19, 2022
Author(s)
May Ling Martin, Matthew Connolly, Zack Buck, Peter Bradley, Damian Lauria, Andrew Slifka
… steel that is being considered for blended natural gas/hydrogen gas service was evaluated in a high-pressure hydrogen gas environment. Fracture toughness testing and … and fatigue behavior were within acceptable bounds for hydrogen service. … Hydrogen blending, hydrogen embrittlement, pipeline steel, …

On the Development of a Hydrogen-Assisted Fatigue Crack Growth Model for API Pipeline Steels

April 5, 2018
Author(s)
Andrew J. Slifka, Ryan M. White, Chris P. Looney, Elizabeth S. Drexler, Robert L. Amaro
… Hydrogen has been proposed as a potential partial solution to … economy. In order to make this a reality, large-scale hydrogen transportation networks need to be engineered and … pipelines are the most likely candidate for the required hydrogen transportation network. One historical barrier to …

Hydrogen Isotope Effect in Embrittlement and Fatigue Crack Growth of Steel

March 7, 2019
Author(s)
Matthew J. Connolly, Andrew J. Slifka, Robert L. Amaro, Elizabeth S. Drexler, May L. Martin
… The corrosive effect of hydrogen on steel is a long-standing problem. Corrosion in the presence of hydrogen is, in part, a consequence of the fast diffusion of hydrogen in ferritic steels. Because of the identical … Fatigue, Deuterium, Hydrogen environment assisted cracking …

DEVELOPMENT OF ELECTROMAGNETIC TECHNIQUES FOR HYDROGEN CONTENT ASSESSMENT IN COATED LINEPIPE STEEL

February 28, 2008
Author(s)
Angelique N. Lasseigne, Jennifer Anton, Thomas Jackson, David Olson, Brajendra Mishra
… at higher pressure, the need for characterization of hydrogen content in high strength steel pipelines is timely … steel pipelines have higher susceptibility to hydrogen damage. Through the use of low-frequency induced … been developed for real-time determination of diffusible hydrogen content in coated pipeline steel. A measurement …

Inkjet Metrology and Standards for Ion Mobility Spectrometry

September 1, 2007
Author(s)
R M. Verkouteren, J Brazin, Eric S. Windsor, Robert A. Fletcher, R Maditz, Wayne Smith, John G. Gillen
… BHT-PLGA microspheres show peaks in positive and negative ion modes, which demonstrate usefulness for testing portals … International Journal of Ion Mobility Spectrometry … calibration, explosives, homeland security, inkjet, ion mobility spectrometry, piezoelectric, portals, standards, …

Ignition Propensity of Hydrogen in the Presence of Metal Surfaces.

November 22, 2011
Author(s)
Chih-Jen Sung, James S. T'ien, Kyle Brady
… Hydrogen as an energy carrier has received much attention in … the continued use of fossil fuels. The benefits of using hydrogen fuel over fossil fuel products are numerous and well … fuels may contribute to world-wide climate change. Hydrogen, depending upon its source, can reduce or eliminate …

Water Dissociation in the Presence of Metal Ions

October 16, 2008
Author(s)
Orkid Coskuner, Emily Jarvis, Thomas C. Allison
… Hydrated metal ions are important in a variety of biological and … of the dynamic local environment associated with these ions remains elusive. We report ab initio molecular dynamics … molecular dynamics, Eigen mechanism, Grotthuss, metal ions, transition path sampling, water dissociation, Zundel …

Masked Ion Beam Lithography with Highly Charged Ions

September 1, 1998
Author(s)
John D. Gillaspy, D Parks, L P. Ratliff
… Masked ion beam lithography using highly charged ions is demonstrated for the first time by producing an array … exposure of the resist is incomplete and isolated single-ion impact sites can be seen within the exposed areas. Atomic … AFM, atomic force microscopy, highly charged ion, ion beam, ion tracks, lithography, PMMA …

Effect of strain rate on tensile test results in hydrogen and other concerns

July 29, 2025
Author(s)
May Martin, Zachary Buck, Allen Eckhardt, Damian Lauria, Andrew Slifka, Matthew Connolly
… of an X52 pipeline steel were conducted in air and in hydrogen gas over a range of five orders of magnitude of … strength and ultimate tensile strength were unaffected by hydrogen or by strain rate, while ductility was greatly reduced in hydrogen, compared to in-air, with a moderate effect of …

Research at NIST-Boulder on the Compatibility of Hydrogen and Carbon Steels

February 18, 2009
Author(s)
Nicholas Nanninga
… The demand for gaseous hydrogen fuel is expected to necessitate a consistent supply of hydrogen that can only be delivered through networks of … and new pipelines and storage units. The focus of the Hydrogen Project at the National Institute of Standards and … gaseous hydrogen, pipeline, materials, pressure vessels …

Hydration for a Series of Hydrocarbons

July 1, 1998
Author(s)
Raymond D. Mountain, D Thirumalai
… relatively short implying that there is a free exchange of hydrogen bonds between the interface region and the bulk. … is not significantly perturbed, even for octane. The hydrogen bond network is essentially preserved. The solutes … demonstrated earlier but also due to the plasticity of the hydrogen bond network. Even for octane we find very little …

A review of fatigue crack growth for pipeline steels exposed to hydrogen

November 30, 2010
Author(s)
Nicholas Nanninga, Andrew J. Slifka, Yaakov Levy, Calvin L. White
… Hydrogen pipeline systems offer an economical means of storing and transporting energy in the form of hydrogen gas. Pipelines can be used to transport hydrogen that has been generated at solar and wind farms to … steel, pipelines, hydrogen, fatigue crack growth, review …

Hydrogen-Steel Compatibility Research at NIST-Boulder

March 30, 2009
Author(s)
Thomas A. Siewert
… Division is outfitting a high pressure (100 MPa) hydrogen testing facility to collect mechanical and … on nondestructive sensors that can measure the content of hydrogen in steels. These data are becoming extremely important as the economics of hydrogen transport drive the consideration of a range of …

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 …
Displaying 76 - 100 of 3755
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