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Displaying 276 - 300 of 1456

Damage and Failure Modes of Structural Steel Components. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-3C) ***DRAFT for Public Comments***

September 1, 2005
Author(s)
Stephen W. Banovic, Timothy J. Foecke
… focused on direct visual examination of the recovered steel elements. Of particular importance were the samples … the structural fire response and collapse analysis. WTC 7 steel was not evaluated in this study of the tower damage and … fire safety, fire investigations, terrorists, terrorism, steel structures, damage, failure analysis, failure models, …

Standard Product Models for Supporting Automated Erection of Structural Steelwork

October 3, 2006
Author(s)
Robert R. Lipman, Vineet Kamat
… A piece of automation equipment such as a robotic crane for steel erection has no intrinsic knowledge of the process it … and spatial information about a component such as a steel member, and the motion sequences that must be executed … must both be programmed into the equipment. In automated steel construction, the position and orientation of steel …

EFFECT OF ETHANOL FUEL AND MICROBIOLOGICALLY INFLUENCED CORROSION ON THE FATIGUE CRACK GROWTH BEHAVIOR OF PIPELINE STEELS

January 25, 2012
Author(s)
Jeffrey W. Sowards, Timothy S. Weeks, Joseph D. McColskey, James R. Fekete, Jain Luke, Charles H. Williamson
… performed to evaluate crack growth behavior of pipeline steels in several ethanol environments. The environments … Fatigue crack growth rates of API 5L X52 and X70 pipeline steels were determined as a function of the stress intensity … CORROSION ON THE FATIGUE CRACK GROWTH BEHAVIOR OF PIPELINE STEELS …

Rattling Behavior in a Simple Perovskite NaWO 3

May 1, 2019
Author(s)
Yuya Ikeuchi, Hiroshi Takatsu, Cedric Tassel, Craig Brown, Taito Murakami, Yuki Matsumoto, Yoshihiko Okamoto, Hiroshi Kageyama
… reaction has allowed the preparation of stoichiometric tungsten bronze NaWO 3 (Im-3). Specific heat (C ; /T 3 vs T) … High-pressure Chemistry, Perovskite phases, Rattling, Tungsten bronze, neutron diffraction …

Hydrogen-Steel Compatibility Research at NIST-Boulder

March 30, 2009
Author(s)
Thomas A. Siewert
… facilities. Preliminary results with X-100 pipeline steel show a 100-fold increase in fatigue crack growth rate … Hydrogen-Steel Compatibility Research at NIST-Boulder …

Correlation of Neutron-Based Strain Imaging and Mechanical Behavior of Armor Steel Welds Produced with the Hybrid Laser Arc Welding Process

June 11, 2018
Author(s)
Jeffrey W. Sowards, Daniel S. Hussey, David L. Jacobson, Stan Ream, Paul A. Williams
… distribution of thermally induced residual strains in a steel armor plate welded with a hybrid laser arc process. … armor steel, Bragg edge, digital image correlation, hybrid laser … Strain Imaging and Mechanical Behavior of Armor Steel Welds Produced with the Hybrid Laser Arc Welding Process …

Behavior of Composite Floor Assemblies Subject to Fire: Influence of Slab Reinforcement

September 1, 2021
Author(s)
Lisa Choe, Selvarajah Ramesh, Chao Zhang, Charles Clifton
… of fire experiments are being conducted on the 2-story steel framed building with composite floors in the National … with lightweight concrete cast on 7.7 cm deep formed steel deck units and welded wire fabric (60 mm/m2) as the … required in the U.S. practice. The structural steel beams and girders were sprayed with a cementitious fire …

Database-Assisted Wind Load Capacity Estimates for Low-Rise Steel Frames

December 1, 2002
Author(s)
S Jang, L L. Lu, Fahim H. Sadek, Emil Simiu
… of the estimated wind load capacities of low-rise steel building frames based on loading patterns (magnitude … finite element analysis, nonlinear analysis, reliability, steel structures, ultimate strength, wind force … Database-Assisted Wind Load Capacity Estimates for Low-Rise Steel Frames …

Low Energy, Ion-Induced Electron and Ion Emission from Stainless Steel: The Effect of Oxygen Coverage and the Implications for Discharge Modeling

February 1, 1999
Author(s)
S. G. Walton, J. C. Tucek, R. Champion, Yicheng Wang
… ions resulting from positive ions impacting stainless steel have been determined as a function of impact energy for … emission, rf discharges, secondary emission, stainless steel, surface work function … Ion-Induced Electron and Ion Emission from Stainless Steel: The Effect of Oxygen Coverage and the Implications for …

An Experimental and Computational Study of Steel Moment Connections under a Column Removal Scenario

March 1, 2011
Author(s)
Fahim H. Sadek, Joseph Main, Hai S. Lew, Stephen D. Robert, Vincent Chiarito, Sherif El-Tawil
… presents an experimental and computational study of two steel beam-column assemblies, each comprising three columns … portions of the structural framing system of two ten-story steel frame buildings, which were designed as part of the … moment resisting connections, progressive collapse, steel structures, structural robustness, testing …

Fracture Toughness Tests at 77 K and 4 K on 316L Stainless Steel Welded Plates

July 29, 2022
Author(s)
Jake Benzing, Nicholas Derimow, Enrico Lucon, Dash Weeks
… extracted from the centers of four 316L welded stainless steel plates, each produced by a different vendor. Although … 316L stainless steel, apparent negative crack growth, liquid helium, liquid … Fracture Toughness Tests at 77 K and 4 K on 316L Stainless Steel Welded Plates …

Solidification behavior and texture of 316L austenitic stainless steel by laser wire directed energy deposition

April 18, 2024
Author(s)
Olivia DeNonno, Alec Saville, Jake Benzing, Jonah Klemm-Toole, Zhenzhen Yu
… and crystallographic texture of 316L austenitic stainless steel builds fabricated via laser-wire directed energy … Solidification, Crystallographic texture, Stainless steel, Dendrite tip undercooling … behavior and texture of 316L austenitic stainless steel by laser wire directed energy deposition …

A Case for Rethinking ASCE 41 Performance-Based Assessment Criteria for Cold-Formed Steel

May 25, 2022
Author(s)
Matthew Speicher, Zhidong Zhang, Benjamin W. Schafer
… new provisions for the assessment of cold-formed steel (CFS) systems. These provisions include component … 10th International Conference on the Behaviour of Steel Structures in Seismic Areas (STESSA 2021) … 41 Performance-Based Assessment Criteria for Cold-Formed Steel …

Developments toward an Autonomous Robotic Crane for Automated Steel Construction

May 1, 2003
Author(s)
Kamel S. Saidi, Alan M. Lytle, Nicholas A. Scott
… Systems Division, is researching robotic structural steel placement as part of a project to develop an Automated Steel Construction Testbed. This project was initiated in … advanced tools and methodologies to speed the erection of steel structures while maintaining or enhancing standards for …
Displaying 276 - 300 of 1456
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