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Topic Area: Metals
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Displaying records 41 to 50 of 63 records.
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41. ADVANCED NON-DESTRUCTIVE HYDROGEN SENSORS TO PREVENT MATERIAL DEGRADATION FROM HYDROGEN DAMAGE
Topic: Metals
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

42. Instrumented Impact Test: Impact Machine Variables and Specimen Position
Series: NIST Interagency/Internal Report (NISTIR)
Topic: Metals
Published: 1/5/2009
Author: Christopher N McCowan
Abstract: An investigation has been conducted on the influence of impact machine variables and specimen positioning on characteristic forces and absorbed energies from instrumented Charpy tests. Brittle and ductile fracture behavior has been investigated by te ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854175

43. Instrumented Impact Tests: Effects of Machine Variables and Specimen Position
Topic: Metals
Published: 1/1/2009
Authors: Christopher N McCowan, Enrico Lucon
Abstract: An investigation has been conducted on the influence of impact machine variables and specimen positioning on characteristic forces and absorbed energies from instrumented Charpy tests. Brittle and ductile fracture behavior has been investigated by te ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854171

44. Integrating methods for phase equilibria and phase property data determination
Topic: Metals
Published: 12/29/2008
Author: Ursula R Kattner
Abstract: Integrated Computational Materials Engineering (ICME) integrates computational tools for accelerated materials development, improved optimization processes in engineering design and easier transition between design and manufacturing. Data are one of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854437

45. Introduction to JOM Spotlight on Magnesium: Applications and Advanced Processing
Topic: Metals
Published: 11/1/2008
Author: Mark R Stoudt
Abstract: No abstract
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854166

46. CTOA Measurements of Welds in X100 Pipeline Steel
Topic: Metals
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

47. Mechanical and electrical coupling at metal-insulator-metal nano-scale contacts
Topic: Metals
Published: 5/22/2008
Authors: Doo-In Kim, Pradeep Narayanan Namboodiri, Frank W DelRio, Robert Francis Cook
Abstract: Mechanical and electrical coupling at nano-scale metallic contacts was investigated using a conducting-probe atomic force microscope (AFM). The current-voltage responses were non-Ohmic, symmetric about zero bias, with conductance values smaller than ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=854471

48. HYDROGEN PIPELINE RESEARCH AT NIST
Topic: Metals
Published: 3/31/2008
Authors: Thomas Allen Siewert, Joseph David McColskey, Angelique N Lasseigne
Abstract: In 2007, the National Institute of Standards and Technology greatly expanded its efforts in support of the use of hydrogen as a fuel.   Various NIST divisions have started projects on measurement needs in the areas of flow rates, storage, mater ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853598

49. Analysis of Welding Parameter Distribution in Stud Arc Welding
Topic: Metals
Published: 7/15/2007
Authors: Ivan Samardzic, Stefanija Klaric, Thomas Allen Siewert
Abstract: This paper describes the application of on-line monitoring system for recording welding current and voltage during stud arc welding with a ceramic ferrule. Recorded values of welding current and voltage are analyzed off-line for the weld process wi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50536

50. Fracture Toughness through a Welded Pipeline Section - Crack Tip Opening Angle Criterion
Topic: Metals
Published: 4/23/2007
Authors: Philippe P. Darcis, Christopher N McCowan, Elizabeth S Drexler, Joseph David McColskey, Avigdor Shtechman, Thomas Allen Siewert
Abstract: The increasing demand for natural gas as an alternative energy source implies continued growth of gas pipeline installations. This trend compels the natural gas transmission industry to consider the construction of larger-diameter, higher-pressure pi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50531



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