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You searched on: Author: william luecke

Displaying records 21 to 30 of 39 records.
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21. FORENSIC STUDY OF THE STEEL IN THE WORLD TRADE CENTER
Published: 12/30/2004
Authors: Thomas A. (Thomas A.) Siewert, Joseph David McColskey, Christopher N McCowan, Frank W Gayle, William E Luecke, Stephen W Banovic, Timothy J Foecke, Richard Joel Fields
Abstract: In September of 2002, the National Institute of Standards and Technology began a two-year investigation into the World Trade Center (WTC) disaster of September 11, 2001. Now almost complete, the investigation addresses many aspects of the catastrophe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30059

22. The Structural Steel of the World Trade Center Towers
Published: 10/1/2004
Authors: Frank W Gayle, Stephen W Banovic, Timothy J Foecke, Richard Joel Fields, William E Luecke, Joseph David McColskey, Thomas A. (Thomas A.) Siewert, Christopher N McCowan
Abstract: In September 2002, the National Institute of Standards and Technology became the lead agency in an investigation of the World Trade Center (WTC) disaster of September 11, 2001. The investigation addresses many aspects of the catastrophe, from occupa ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=853353

23. Influence of Grain Size on the Tensile Creep Behavior of Ytterbium-Containing Silicon Nitride
Published: 3/1/2004
Authors: Sheldon Martin Wiederhorn, A R D Lopez, William E Luecke, Michael J Hoffmann, B Hockey, J French, D C Yoon
Abstract: The effect of grain size on the tensile creep of silicon nitride is investigated on two materials, one containing 5 % by volume Yb2O3, the other containing 5 % by volume Yb203 and 0.5 % by mass Al2O3. Annealing of the alumina-free silicon nitride in ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850057

24. Instrumented Indentation and Ultrasonic Velocity Techniques for the Evaluation of Creep Cavitation in Silicon Nitride
Published: 1/1/2003
Authors: F Lofaj, Douglas T Smith, Gerald V. Blessing, William E Luecke, Sheldon Martin Wiederhorn
Abstract: Instrumented indentation and ultrasonic wave velocity techniques combined with precise density change measurements and transmission electron microscopy (TEM) were used to investigate the changes of elastic moduli in silicon nitride after tensile defo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850099

25. 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

26. 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

27. Results of an International Round-Robin for Tensile Creep Rupture of Silicon Nitride
Published: 2/1/2002
Author: William E Luecke
Abstract: Fourteen laboratories participated in an ubterkabiratirt study to establish the within- and between-laboratory repeatability of tensile creep rupture of silicon nitride. In air at 1375 C at 200 Mpa the times to failure ranged over a factor of 50, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850437

28. Standards for Reliability Testing of Heavy Vehicle
Published: 10/1/2001
Authors: S Jahanmir, James F Kelly, William E Luecke
Abstract: The objective of this project is to develop international standard test methods for assessing the reliability of ceramic components used in diesel engines and other heavy vehicle propulsion systems. Advanced ceramics such as silicon nitrides offer un ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850557

29. Standards for Reliability Testing of Heavy Vehicle Propulsion Materials
Published: 1/1/2001
Authors: S Jahanmir, James F Kelly, William E Luecke
Abstract: The objective of this project is to develop international standard test methods for assessing the reliability of ceramic components used in diesel engines and other heavy vehicle propulsion systems. Advanced ceramics such as silicon nitride offer a u ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851111

30. 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



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