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Search Publications by: William E. Luecke (Assoc)

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Displaying 1 - 25 of 52

Evaluation of Methods for Determining the Yoshida-Uemori Combined Isotropic/Kinematic Hardening Model Parameters from Tension-Compression Tests of Advanced Lightweighting Materials

August 19, 2022
Author(s)
Dilip K. Banerjee, William E. Luecke, Mark Iadicola, Evan Rust
The performance of two methods, termed Manual and Optimization, for determining the values of the constitutive-model parameters for Yoshida-Uemori (Y U) isotropic-kinematic hardening model was evaluated. The Y U parameters were determined for two 6000

2020 Numisheet benchmark study tension/compression test summary

April 28, 2022
Author(s)
William E. Luecke, Evan Rust, Mark Iadicola
This report describes the test equipment, process, analysis, and data-file formats for the tension/compression testing of the four materials associated with the Numisheet conference Benchmarks. The four materials include two steels alloys, DP980 for

Viscous Flow Creep in Ceramics Containing Secondary Crystalline Phases

October 12, 2021
Author(s)
Q Jin, D S. Wilkinson, G C. Weatherly, William E. Luecke, Sheldon M. Wiederhorn
Experimental observations of the creep response of a Y 20 3-fluxed Si 3N 4 containing secondary crystalline phases(SP)are presented.The widths of grain-boundary amorphous films before and after creep have been characterized by using transmission electron

Intercritical annealing to achieve a positive strain rate sensitivity of mechanical properties and suppression of plastic instabilities in multi-phase medium-Mn steels

October 29, 2020
Author(s)
Jake Benzing, William E. Luecke, Steven Mates, Dirk Ponge, Dierk Raabe, James Wittig
The present work investigates the room temperature tensile properties of a cold-rolled Fe-12Mn- 3Al-0.05C (% by mass) steel designed to have a multi-phase microstructure and positive strain rate sensitivities. An increase in intercritical annealing time

2020 Numisheet benchmark study uniaxial tensile tests summary

April 29, 2020
Author(s)
Evan Rust, William E. Luecke, Mark Iadicola
This report describes the test equipment, process, analysis, and data file formats for the 2020 Numisheet benchmark study tensile testing of the four materials associated with the Numisheet conference benchmarks. The four materials include two steel alloys

Compartment Fire Experiments on Long-Span Composite-Beams with Simple Shear Connections Part 1: Experiment Design and Beam Behavior at Ambient Temperature

October 22, 2019
Author(s)
Selvarajah Ramesh, Lisa Choe, Mina S. Seif, Matthew Hoehler, William L. Grosshandler, Ana Sauca, Matthew Bundy, William E. Luecke, Yi Bao, Matthew Klegseth, Genda Chen, John Reilly, Branko Glisic
The National Institute of Standards and Technology recently expanded its large-scale structural-fire testing capabilities in the National Fire Research Laboratory. A landmark test series was conducted on long-span steel-concrete composite floor beams

Experimental and numerical study of multi-phase medium-Mn TWIP-TRIP steel: influences of strain rate and phase constituents

September 15, 2019
Author(s)
William E. Luecke, Y. Liu, Jake Benzing, X. Zhang, A. Dutta, D. Ponge, C. Oksay, D. Raabe, J.E. Wittig
The present work investigates the room temperature tensile properties of a Fe-12Mn-3Al-0.05C (weight %) twinning- and transformation-induced plasticity (TWIP-TRIP) steel from quasi-static to low-dynamic strain rates ( ̇ = 10-4 /s to  ̇ = 102 /s). The

Rate effects on transformation kinetics in a metastable austenitic stainless steel

November 15, 2017
Author(s)
Rakan Alturk, William E. Luecke, Steven Mates, A Araujo, K. S. Raghavan, Fadi Abu-Farha
In this study, the effects of strain rate on the mechanical properties and the strain-induced austenite-to-martensite transformation in 201 austenitic stainless steel (SS201) were investigated. This grade was selected as a low-cost stainless steel with

High Strain Rate Mechanical Characterization of Carbon Fiber Reinforced Polymer Composites using Digital Image Correlations

March 28, 2017
Author(s)
Louise A. Ahure Powell, William E. Luecke, Matthias J. Merzkirch, Timothy J. Foecke, Katherine Avery
The introduction of carbon fiber reinforced polymer (CFRP) composites to structural components in lightweight automotive structures necessitates an assessment to evaluate that their crashworthiness dynamic response provides similar or higher levels of

Temperature-Dependent Material Modeling for Structural Steels: Formulation and Application

April 15, 2016
Author(s)
Mina S. Seif, William E. Luecke, Lisa Y. Choe, Joseph A. Main, Joseph D. McColskey, Chao Zhang, Jonathan M. Weigand, John L. Gross, Fahim Sadek
This report presents the formulation and application of a newly developed temperature-dependent material model for structural steels. First it presents a model for computing the stress-strain behavior of structural steel for conditions appropriate to fire

Finite element modeling of structural steel component failure at elevated temperatures

March 12, 2016
Author(s)
Mina S. Seif, Joseph A. Main, Jonathan M. Weigand, Therese P. McAllister, William E. Luecke
A key issue in evaluating the response of structural systems to fire effects is the representation of material behavior at elevated temperatures. In addition to stress-strain behavior, modeling of fracture is required to capture failure modes such as tear

INFLUENCE OF MATERIAL MODELS ON PREDICTING THE FIRE BEHAVIOR OF STEEL COLUMNS

February 19, 2016
Author(s)
Lisa Y. Choe, Chao Zhang, William E. Luecke, John L. Gross, Amit Varma
Finite-element (FE) analysis was used to compare the high-temperature responses of steel columns with two different stress–strain models: the Eurocode 3 model and the model proposed by National Institute of Standards and Technology (NIST). The comparisons

Modeling of moment connections for structural fire analyses

January 5, 2016
Author(s)
Mina S. Seif, Therese P. McAllister, Joseph A. Main, William E. Luecke
Performance-based methodologies to evaluate the fire performance of structures are needed to move beyond the prescriptive procedures presently in use, which cannot be used to determine actual structural performance in fire. Analytical methods are needed

Modeling of moment connections for structural fire analyses

March 25, 2014
Author(s)
Mina S. Seif, Therese P. McAllister, Joseph A. Main, William E. Luecke
Performance-based methodologies to evaluate the fire performance of structures are needed to move beyond the prescriptive procedures presently in use, which cannot be used to determine actual structural performance in fire. Analytical methods are needed

High-temperature tensile constitutive data and models for structural steels in fire

November 30, 2011
Author(s)
William E. Luecke, Stephen W. Banovic, Joseph D. McColskey
This report documents the stress-strain behavior of a collection of structural steels recovered from the collapse of the World Trade Center. These steels, combined with literature data form the basis of a model for the stress-strain behavior of structural

Workshop on Quantitative Tools for Condition Assessment of Aging Infrastructure

October 14, 2010
Author(s)
Ward L. Johnson, Thomas A. Siewert, Jessica Terry, Dat Duthinh, Mark Iadicola, William E. Luecke, Joseph D. McColskey
The Quantitative Tools for Condition Assessment of Aging Infrastructure Workshop was held May 4-5, 2010, in Boulder, Colorado. It was organized by a team of researchers within the National Institute of Standards and Technology s (NIST) Materials Science

High-Temperature, Tensile, Constitutive Data for World Trade Center Steels

October 16, 2008
Author(s)
William E. Luecke, Stephen W. Banovic, Joseph D. McColskey
This paper reports high-temperature tensile constitutive data for nine steels recovered from the fire and impact floors of the World Trade Center. Microstructurally, the nine steels represent typical structural steels from the 1970s. It reports the true