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Author: joseph mccolskey

Displaying records 31 to 40 of 43 records.
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31. 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

32. FORENSIC STUDY OF THE STEEL IN THE WORLD TRADE CENTER
Published: 12/30/2004
Authors: Thomas Allen 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

33. 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 Allen 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

34. Mechanical Behavior of Contact Aluminum Alloy
Published: 1/1/2003
Authors: David Thomas Read, Yi-Wen Cheng, Joseph David McColskey, R R Keller
Abstract: Here we report the results of tensile tests of thin films of Al-0.5 % Cu deposited on bare silicon. This material was on a wafer that was subjected to the complete CMOS fabrication process, tensile strength, and elongation were all lower than the co ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851239

35. Failure Analysis of the WWVB Tower
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6619
Published: 8/1/2002
Authors: Joseph David McColskey, Christopher N McCowan, Raymond L Santoyo
Abstract: A failure analysis was conducted on the collapse of the NIST WWVB tower. The analysis included mechanical testing, chemical analysis, and metallographic examination of the failed part. We ascertained that the underlying reason for the collapse was ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851247

36. Measurement of Residual Stress in Bent Pipelines
Published: 6/1/2002
Authors: G A Alers, Joseph David McColskey
Abstract: Buried gas and oil pipelines can be subjected to unexpected bending loads causedby such earth movements as earthquakes, wash-outs, road building, mining subsidence, etc.as well as by denting from unintentional digging. In order to make a fitness-for ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851233

37. Tensile Properties of Free-Standing Aluminum Thin Films
Published: 9/1/2001
Authors: David Thomas Read, Yi-Wen Cheng, R R Keller, Joseph David McColskey
Abstract: Tensile properties of electron-beam-deposited free-standing aluminum thin films were measured. High {sigma}^dy^ and UTS were observed, mainly due to fine grain sizes, consistent with values reported in the literature. The observed Young's modulus, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851168

38. Microstructural and Mechanical Characterization of Electrodeposited Gold Films
Published: 1/1/2001
Authors: G J Long, David Thomas Read, Joseph David McColskey, K Crago
Abstract: The effects of temperature and duration of thermal treatments on the microstructure and mechanical properties of electrodeposited gold films were evaluated. Specimens were synthesized by electrodeposition of gold on copper foil substrates followed b ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851321

39. Microwave Detection of Stress Induced Farigue Cracks in Steel and Potential of Crack Opening Determination Using a New Phase Sensitive Approach Based on a Waveguide Magic TEE
Published: 7/1/2000
Authors: N Qaddoumi, E Ranu, R Zoughi, Joseph David McColskey
Abstract: Detection and evaluation of surface cracks in metals is an important facet of nondestructive testing and evaluation (NDT&E). Cracks in bridges, aircraft wings and other metal structures can pose serious danger to the structure and ultimately human l ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851366

40. Microwave Detection of Stress-Induced Fatigue Cracks in Steel and Potential for Crack Opening Determination
Published: 6/1/2000
Authors: N Qaddoumi, E Ranu, Joseph David McColskey, R Mirshahi, R Zoughi
Abstract: Fatigue crack detection in metals is an important practical issure in many industries. In this paper the results of an investigation, using the dominat mode approach, employing flange-mounted open-ended rectangular waveguides at several microwave fr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851194



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