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Author: william luecke
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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 Allen 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 Strain-Based Methodology for High Temperature Lifetime Prediction
Published: 9/1/1998
Authors: Sheldon Martin Wiederhorn, William E Luecke, Ralph Krause
Abstract: In structural materials, lifetime is often strain-determined. Once a part exceeds its allowable strain, its functional integrity is lost. Although most ceramics are designed to a brittle failure criterion, silicon nitride at the temperatures expect ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850007

3. A new model for tensile creep of silicon nitride
Published: 10/1/1999
Authors: William E Luecke, Sheldon Martin Wiederhorn
Abstract: The tensile creep rate of most commercial grades of Si3N4 increases strongly with stress. Although the usual power-law functions can represent the creep data, the data often show curvature and systematic variations of slope with temperature and stre ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900964

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. CAVITATION CONTRIBUTES SUBSTANTIALLY TO TENSILE CREEP IN SILICON NITRIDE
Published: 8/1/1995
Authors: William E Luecke, Sheldon Martin Wiederhorn, B Hockey, Ralph Krause, Gabrielle Gibbs Long
Abstract: During tensile creep of a hot isostatically pressed (HIPed) silicon nitride, the volume fraction of cavities increases linearly with strain; these cavities produce nearly all of the measured strain. In contrast, compressive creep in the same stress a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=900941

6. Comparison of Tensile and Compressive Creep Behavior in Silicon Nitride
Published: 1/1/2000
Authors: K J Yoon, Sheldon Martin Wiederhorn, William E Luecke
Abstract: The creep behavior of most commercial grade of Si^d3^N^d4^ was studied at 1350 and 1400 C. Stresses ranged from 10 to 200 Mpa in tension and from 30 to 300 Mpa in compression. In tension, the creep rate increased linearly with stress at low str ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850202

7. Contemporaneous Structural Steel Specifications. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-3A)
Series: National Construction Safety Team Act Reports (NIST NCSTAR)
Report Number: 1-3
Published: 12/1/2005
Authors: William E Luecke, Thomas Allen Siewert, Frank W Gayle
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101017

8. Contemporaneous Structural Steel Specifications. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-3A) ***DRAFT for Public Comments***
Series: National Construction Safety Team Act Reports (NIST NCSTAR)
Report Number: 1-3
Published: 9/1/2005
Authors: William E Luecke, Thomas Allen Siewert, Frank W Gayle
Abstract: This report reviews the contemporaneous (1960s era) steel and welding standards used to construct the 110-story World Trade Center (WTC) towers. It describes the major structural elements in the towers and the many grades of steels relevant to the WT ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909040

9. Creep of Lanthanum Gallate
Published: 3/1/2002
Authors: William E Luecke, T R Armstrong
Abstract: Strontium- and magnesium-doped lanthanum gallate (LSGM) was deliberately prepared to give A-site deficient non-stoichiometry with compositions (La^d0.9^Sr^d0.1^)z(Ga^d0.8^Mg^d0.2^)O^d3-delta^ (z =1.0,0.98, and 0.95). Creep tests in four-point 950 C ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850516

10. Effect of Temperature, Strain Rate, and Grain Size on the Mechanical Response of Ti^d3^SiC^d2^ in Tension
Published: 4/1/2002
Authors: M Radovic, M W Barsoum, T El-Raghy, Sheldon Martin Wiederhorn, William E Luecke
Abstract: Results of tensile tests at constant cross head displacement rates, relaxation tests and cycling loading-unloading tests indicate that the mechanical response of Ti^d3^SiC^d2^ is a strong function of temperature, strain rate and grain size. Loading ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850062



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