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Displaying 151 - 175 of 1456

Assessment of Structural Steel From the World Trade Center Towers. Part I: Recovery and Identification of Critical Structural Elements

October 2, 2006
Author(s)
Stephen W. Banovic, Timothy J. Foecke, Frank W. Gayle
… of the structural components and the evaluation of the steel with regard to damage and degradation as a result of … locations within the towers. A total of 236 pieces of WTC steel were cataloged, including several exterior and core … identification, recovery, structural steel, World Trade Center Towers …

Assessment of Structural Steel From the World Trade Center Towers. Part IV: Experimental Techniques to Assess Possible Exposure

October 2, 2006
Author(s)
Stephen W. Banovic, Timothy J. Foecke
… World Trade Center investigation, recovered structural steel was examined to provide data on potential temperature excursions seen by the structural steel for input/validation of the fire and thermal finite … of the condition of the primer paint on the structural steel and evaluation of the steel mirocstructure. Results …

Microstructure effects on the fracture surface resistance of base metal in line pipe steels in high pressure H2 gas

April 29, 2025
Author(s)
Andrew LeBoeuf, Santigopal Samanta, Joseph Ronevich, Christopher San Marchi, Zachary Buck, Matthew Connolly, Lawrence Cho, Kip Findley
… resistance can vary considerably for different pipeline steels within a similar strength range. The present work aims … Pipeline Steels, Fracture, Hydrogen Embrittlement, Microstructure … the fracture surface resistance of base metal in line pipe steels in high pressure H2 gas …

FIRE RESILIENCE OF STEEL-CONCRETE COMPOSITE FLOOR SYSTEMS

November 30, 2022
Author(s)
Selvarajah Ramesh, Lisa Choe, Matthew Hoehler, Matthew Bundy
… of compartment fire experiments conducted on 9.1 m × 6.1 m steel-concrete composite floors in a full-scale, two-story, two-bays by three-bays steel gravity frame building to investigate the fire … Composite floor, compartment fire, steel frame building, large-scale fire experiment …

Reliability Improvements in Repair Welding of High Strength Steels

July 1, 2002
Author(s)
Ivan Samardzic, Thomas A. Siewert
… welding of railway tanks manufactured from high strength steels. … degradation, high-strength steels, reliability improvements, repair welding … Reliability Improvements in Repair Welding of High Strength Steels …

CTOA Results for X65 and X100 Pipeline Steels:Influence of Displacement Rate

August 1, 2008
Author(s)
Roni Reuven, Christopher N. McCowan, Elizabeth S. Drexler, Avigdor Shtechman, Philippe P. Darcis, John M. Treinen, R. Smith, J. Merritt, Thomas A. Siewert, Joseph D. McColskey
… (CTOA) was measured on two types of commercial pipeline steels, API-X65 and API-X100 at a range of displacement rates … from quasi-static to dynamic for the X65 and X100 pipeline steels, as well as discussing optimizing the method for CTOA … CTOA Results for X65 and X100 Pipeline Steels:Influence of Displacement Rate …

Summary of an ASME/DOT project on measurements of fatigue crack growth rate of pipeline steels

July 20, 2014
Author(s)
Andrew J. Slifka, Elizabeth S. Drexler, Robert L. Amaro, Damian S. Lauria, Louis E. Hayden, Douglas G. Stalheim, Yaoshan Chen
… of Standards and Technology has been testing pipeline steels to determine the fatigue crack growth rate in … on Hydrogen Piping and Pipelines for about 3 years. Four steels were selected, two X52 and two X70 alloys. Other … on measurements of fatigue crack growth rate of pipeline steels …

A review of fatigue crack growth for pipeline steels exposed to hydrogen

November 30, 2010
Author(s)
Nicholas Nanninga, Andrew J. Slifka, Yaakov Levy, Calvin L. White
… a review of the fatigue crack growth response of pipeline steels when exposed to gaseous hydrogen environments. Because … A review of fatigue crack growth for pipeline steels exposed to hydrogen …

Elastic constants and internal friction of martensitic steel, ferritic-pearlitic steel, and a-iron

January 2, 2007
Author(s)
Sudook A. Kim, Ward L. Johnson
… of induction hardened and unhardened SAE 1050 plain-carbon steel were determined by acoustic resonance spectroscopy. The … and analysis on monocrystalline α-iron were performed. The steel was found to be only slightly anisotropic, and the … α-iron, bulk modulus, carbon steel, damping, elastic constants, ferrite, hardness, …

Seismic Rehabilitation Design of Steel Moment Connection with Welded Haunch

January 1, 2000
Author(s)
Q -. Yu, Chia-Ming Uang, John L. Gross
… procedure for the seismic rehabilitation of pre-Northridge steel moment connections using a welded haunch. Experimental … flange significantly improved the seismic performance of steel moment connections. The welded haunch drastically … technology, seismic performance, seismic rehabilitation, steel moment connection, tensile stress, welded haunch …

Analysis of Deformation-Induced Surface Morphologies in Steel Sheet

July 1, 2005
Author(s)
Mark R. Stoudt, Joseph B. Hubbard
… The surfaces of strained mild steel sheet specimens were examined with scanning laser … analytical methods, confocal microscopy, ferritic steel, plastic deformation … Analysis of Deformation-Induced Surface Morphologies in Steel Sheet …

Performance of Steel Moment Connections under a Column Removal Scenario. I: Experiments

April 3, 2012
Author(s)
Hai S. Lew, Joseph A. Main, Stephen D. Robert, Fahim Sadek, Vincent Chiarito
… This paper presents an experimental study of two full-scale steel beam-column assemblies, each comprising three columns … of the exterior moment-resisting frames of two ten-story steel frame buildings. One test specimen had welded … Full-scale tests, Progressive collapse, Seismic design, Steel structures …

Steel Inventory and Identification. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-3B) ***DRAFT for Public Comments***

September 1, 2005
Author(s)
Stephen W. Banovic
… and Technology (NIST), NIST possesses 236 structural steel elements from the World Trade Center (WTC) buildings. … of the quality and mechanical properties of the steel, for all 12 grades of the exterior panel material, 2 … both grades for the floor truss material. The lack of WT 7 steel precludes tests on actual material from the structure; …

Polarized Light-Scattering Measurements of Polished and Etched Steel Surfaces

July 1, 2000
Author(s)
Thomas A. Germer, T Rinder, HT Rothe
… and polarization of light scattered by a series of steel surfaces was measured. The samples differ by polishing … optical scatter, permittivity, polarimetry, roughness, steel … Light-Scattering Measurements of Polished and Etched Steel Surfaces …

In situ fatigue monitoring investigation of additively manufactured maraging steel

April 17, 2020
Author(s)
Edward Garboczi, Todd Henry, Francis Phillips, Daniel Cole, Robert Haynes, Terrence Johnson
… behavior ofmetallic additive manufacturing (AM) maraging steel structures. Maraging steel AM beams were fabricated with laser powder bed fusion … nano-indentation, x-ray computed tomography, maraging steel … investigation of additively manufactured maraging steel …

New Steel Gravity Connection Details for Enhanced Integrity

April 23, 2015
Author(s)
Jonathan M. Weigand, Jeffrey W. Berman
… Recent large-scale tests have found that Steel Gravity Framing Systems (SGFSs) with conventional … Steel, Connections, Gravity framing, Structural integrity, … New Steel Gravity Connection Details for Enhanced Integrity …

Influence of Fire on the Seismic Shear Capacity of Cold-Formed Steel Shear Walls

June 25, 2018
Author(s)
Blanca Andres Valiente, Matthew Hoehler
… Lightweight construction using cold-formed steel (CFS) stud represent roughly 20 % of the multi-story … about the structural and fire performance of cold-formed steel construction, there is scarce knowledge about the … and fire loading. Initial tests on earthquake-damaged steel- sheathed CFS shear walls under natural fire load …

Influence of ground motion selection on the assessment of a steel special moment frames

January 8, 2017
Author(s)
Raul Uribe, Siamak Sattar, Matthew Speicher, Luis Ibarra
… selection methods to evaluate the seismic performance of steel special moment frames. Two methods are investigated: a … with ASCE/SEI 7-10, are used to represent archetype steel frame buildings on the west coast of the United States. … Ground motion selection, conditional mean spectra, steel moment frame, seismic assessment …

Fire Resilience of a Steel-Concrete Composite Floor System: Full-Scale Experimental Evaluation for Influence of Slab Reinforcement (Test #2)

June 1, 2022
Author(s)
Lisa Choe, Matthew Hoehler, Matthew Bundy, Rodney A. Bryant, Brian Story, Anthony R. Chakalis, Artur A. Chernovsky, Selvarajah Ramesh, Xu Dai
… full-scale composite floor assemblies with the two-story steel gravity frame, two bays by three bays in plan. This … on the structural integrity of the 9.1 m × 6.1 m steel-concrete composite floor subjected to combined … over 2 hours. This experimental study confirmed that the steel reinforcement played a vital role in maintaining the …

Side-grooved Charpy Impact Testing: Assessment of Splitting and Fracture Properties of High-Toughness Plate Steels

July 1, 2021
Author(s)
Fabio Di Gioacchino, Enrico Lucon, Emily B. Mitchell, Kester D. Clarke, David K. Matlock
… of three commercially produced high-toughness X70 pipeline steels were evaluated with Charpy impact test samples … splitting on fracture characteristics and impact energies, steels with different splitting susceptibilities but similar … splitting, fracture toughness, impact testing, pipeline steels, side grooves …
Displaying 151 - 175 of 1456
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