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1. The role of metallurgy in the NIST investigation of the world trade center towers collapse
Published: 11/1/2007
Authors: Stephen W Banovic, Timothy J Foecke, William E Luecke, Joseph David McColskey, Christopher N McCowan, Thomas A. (Thomas A.) Siewert, Frank W Gayle
Abstract: On August 21, 2002, on the direction of the U.S. Congress, the National Institute of Standards and Technology (NIST) initiated an investigation into the collapse of the World Trade Center (WTC) towers. In support of the overall investigation goals, t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900980

2. A Tensile-Testing Technique for Micrometer-Sized Free-Standing Thin Films
Published: 7/1/2005
Authors: Yi-Wen Cheng, David Thomas Read, Joseph David McColskey, J Wright
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851350

3. 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 A. (Thomas A.) 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

4. Anisotropic Behavior of X100 Pipeline Steel
Published: 7/6/2008
Authors: John Matthew Treinen, William E Luecke, Joseph David McColskey, Philippe P. Darcis, Yong-Yi Wang
Abstract: While steel is generally treated as being isotropic, tensile and compression tests in the different pipe orientations for API X100 grade pipeline steel show that that this is not the case. To better understand the anisotropy, tests in the longitudina ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853559

5. Apparatus for Accelerating Measurements of Environmentally Assisted Fatigue Crack Growth at Low Frequency
Published: 3/4/2014
Authors: Elizabeth S Drexler, Joseph David McColskey, Marc Dvorak, Neha N. Rustagi, Damian S Lauria, Andrew J Slifka
Abstract: Testing the fatigue crack growth of materials at low frequencies has been a tug-of-war between the investment of time and starting at high values of the stress intensity factor. Running a test at a frequency less than 1 Hz can take weeks and if meani ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912255

6. 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 A. (Thomas A.) 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

7. 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 A. (Thomas A.) 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

8. CTOA Testing of Pipeline Steels Using MDCB Specimens
Published: 9/1/2013
Authors: Robert L Amaro, Jeffrey W Sowards, Elizabeth S Drexler, Joseph David McColskey, Christopher N McCowan
Abstract: Crack tip opening angle (CTOA) is used to rank the relative resistance to crack extension of various pipeline steels. In general, the smaller the CTOA value, the lower the resistance to crack extension. It is unclear, however, whether CTOA is a mater ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914141

9. CURVED-WIDE PLATE TESTING OF X100 GIRTH WELDS
Published: 9/29/2014
Authors: Timothy S Weeks, Joseph David McColskey, Mark D. Richards, Yong-Yi Wang, Marie A Quintana
Abstract: The curved-wide plate (CWP) tests are frequently used for assessing the quality of pipeline girth welds. Despite a large number of CWP tests having been conducted at great expense over many decades, an industry consensus standard remains unavailable ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916009

10. Compression-Fatigue, Elastic Modulus, and Thermal Contraction of Insulated Conduit Arrays of ITER CS Modules
Published: 1/9/2013
Authors: Timothy S Weeks, Joseph David McColskey, Richard Reed, Robert Walsh, N. Martovetsky
Abstract: Abstract- Compression-fatigue tests at 76 K were conducted to compare two insulation systems (epoxy resin impregnated glass/Kapton) for use in the ITER Central Solenoid modules. Test samples consisted of insulated conduits that were stacked in 4 x 4 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912225



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