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Author: thomas siewert
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Displaying records 1 to 10 of 74 records.
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1. United States Capitol Dome:Characterization of Cast and Wrought Materials
Published: 1/2/2011
Authors: Christopher N McCowan, Thomas Allen Siewert, David Olson, Joseph David McColskey
Abstract: Restoration of the cast iron dome at the United States Capitol is needed because moisture is leaking into interior areas of the building due to corrosion damage. Microstructure, composition, and tensile properties of cast and wrought samples from th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906813

2. Workshop on Quantitative Tools for Condition Assessment of Aging Infrastructure
Series: NIST Interagency/Internal Report (NISTIR)
Published: 10/14/2010
Authors: Ward L Johnson, Thomas Allen Siewert, Jessica Terry, Dat Duthinh, Mark A Iadicola, William E Luecke, Joseph David McColskey
Abstract: The Quantitative Tools for Condition Assessment of Aging Infrastructure Workshop was held May 4-5, 2010, in Boulder, Colorado. It was organized by a team of researchers within the National Institute of Standards and Technology s (NIST) Materials Scie ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906310

3. Peer Review Report 2010
Published: 9/22/2010
Authors: Thomas Allen Siewert, Robert Smith, Theresa Bell, Joseph David McColskey, Richard Joel Fields
Abstract: The Pipeline and Hazardous Materials Safety Administration s Pipeline Safety Research and Development (R&D) Program held a structured peer review of active research projects in April 2010. The peer review panel consisted of twelve government and ind ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905989

4. Integration of the NIST and SURDAT databases on the theoretical and physical properties of lead-free solder alloys
Published: 4/13/2010
Authors: W. Gasior, Z. Moser, A. Debski, Thomas Allen Siewert
Abstract: The electronic SURDAT database published in 2007 (available freely from the website www.imim.pl) is being integrated with the NIST database (available freely from www.boulder.nist.gov/div853/lead_free/solders.html) to provide a single source for data ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903995

5. Crack tip opening angle: applications and developments in the pipeline industry
Published: 7/1/2009
Authors: Elizabeth S Drexler, Philippe Darcis, Richard Joel Fields, Joseph David McColskey, Christopher N McCowan, Roni Reuven, Thomas Allen Siewert
Abstract: One of the most difficult safety problems associated with gas pipeline to be solved is the control of ductile fracture propagation. To address this issue, the crack tip opening angle (CTOA) criterion is becoming one of the more widely accepted proper ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900921

6. Hydrogen-Steel Compatibility Research at NIST-Boulder
Published: 3/30/2009
Author: Thomas Allen Siewert
Abstract: The NIST Materials Reliability Division is outfitting a high pressure (100 MPa) hydrogen testing facility to collect mechanical and thermodynamic property data on various candidate structural materials, and is developing data on nondestructive sens ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902004

7. ADVANCED NON-DESTRUCTIVE HYDROGEN SENSORS TO PREVENT MATERIAL DEGRADATION FROM HYDROGEN DAMAGE
Published: 1/5/2009
Authors: Angelique N Lasseigne, Kamalu Koenig, David Olson, Brajendra Mishra, Joshua Jackson, Thomas Allen Siewert, Joseph David McColskey
Abstract: New higher strength pipeline steels (X100 and X120) exhibit lower tolerance for hydrogen (diffusible and formed hydrides) before significant degradation or failure occurs. It is essential to have advanced sensors to monitor the hydrogen content and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854112

8. CTOA Measurements of Welds in X100 Pipeline Steel
Published: 10/3/2008
Authors: Elizabeth S Drexler, Philippe P. Darcis, Christopher N McCowan, John Matthew Treinen, Avigdor Shtechman, Roni Reuven, Thomas Allen Siewert, Robert Smith, J. Merritt, Joseph David McColskey
Abstract: A suite of tests characterizing X100 pipeline steels was initiated at the National Institute of Standards and Technology (NIST) in Boulder. Part of the test matrix included testing the toughness of the base metal, welds, and heat-affected zones (HAZ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854069

9. CTOA Results for X65 and X100 Pipeline Steels:Influence of Displacement Rate
Published: 8/1/2008
Authors: Roni Reuven, Christopher N McCowan, Elizabeth S Drexler, Avigdor Shtechman, Philippe P. Darcis, John Matthew Treinen, R. Smith, J. Merritt, Thomas Allen Siewert, Joseph David McColskey
Abstract: The toughness and plasticity of steel generally decreases with increasing testing rate. The crack tip opening angle (CTOA) was measured on two types of commercial pipeline steels, API-X65 and API-X100 at a range of displacement rates to characterize ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854079

10. Dynamic Apparatus for the CTOA Measurement in Pipeline Steels
Published: 8/1/2008
Authors: Avigdor Shtechman, Christopher N McCowan, Roni Reuven, Elizabeth S Drexler, Philippe P. Darcis, John Matthew Treinen, R. Smith, J. Merritt, Thomas Allen Siewert, Joseph David McColskey
Abstract: When a crack initiates and propagates in a pressurized pipe the only thing that might stop this high-velocity event is the release of internal pressure (decompression) resulting in a deceleration in the crack-propagation rate. This deceleration can b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854082



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