WJ Supplements - 2006

RESEARCH PAPERS

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  • A Novel Edge Feature Correlation Algorithm for Real-Time Computer Vision-Based Molten Weld Pool Measurements
    A potentially more efficient control scheme compared to traditional open loop systems is investigated.
    BY C. Balfour et al.
    Published January 2006
  • Predicting and Reducing Liquation-Cracking Susceptibility Based on Temperature vs. Fraction Solid
    A search was made to find a way to accurately predict liquation cracking in aluminum, with the idea in mind to develop or select effective filler metals.
    BY G. Cao and S. Kou
    Published January 2006
  • Fatigue Behavior of Welded Joints Part 2: Physical Modeling of the Fatigue Process
    A model was generated to predict fatigue stress at the toe of fillet welds.
    BY P. Darcis et al.
    Published January 2006

  • Ranking the Resistance of Wrought Superalloys to Strain-Age Cracking
    The controlled heat rate test was used to rank the crack resistance of several higher-strength alloys.
    BY M. D. Rowe
    Published February 2006
  • Experimental and Numerical Simulation of Restraining Forces in Gas Metal Arc Welded Joints
    The restraining forces exerted during the GMAW process are calculated numerically and experimentally.
    BY M. A. Wahab et al.
    Published February 2006

  • Design of Experiment Analysis and Weld Lobe Estimation for Aluminum Resistance Spot Welding
    Process parameters, fitup, and misalignment were examined as to their effects on weld quality.
    BY Y. Cho et al.
    Published March 2006
  • Arc Behavior and Melting Rate in the VP-GMAW Process
    High-speed video synchronized with high-speed data acquisition was used to analyze droplet melting characteristics.
    BY D. D. Harwig et al.
    Published March 2006
  • Finite Element Modeling Predicts the Effects of Voids on Thermal Shock Reliability and Thermal Resistance of Power Device
    The reliability of lead-free solder for use on semiconductor devices was investigated.
    BY J. Chang et al.
    Published March 2006

  • Microstructure and Microchemistry of Hard Zone in Dissimilar Weldments of Cr-Mo Steels
    The microstructure and microchemistry of hard and soft zones in dissimilar weldments of Cr-Mo steels that underwent postweld heat treatment are reported.
    BY C. Sudha et al.
    Published April 2006
  • Active Soldering of ITO to Copper
    Analysis of active soldering of indium-tin-oxide sputtering targets to copper backing plates revealed that titanium actively segregates at the ITO/solder and copper/solder interfaces.
    BY S. Y. Chang et al.
    Published April 2006
  • Investigating the Spot Weld Fatigue Crack Growth Process Using X-ray Imaging
    An x-ray technique was used to investigate fatigue crack initiation and crack propagation of spot welded joints.
    BY G. Wang and M. E. Barkey
    Published April 2006

  • Prediction of Ferrite Number of Duplex Stainless Steel Clad Metals Using RSM
    Mathematical models developed with response surface methodology proved useful for predicting and controlling FN in duplex stainless steel cladding.
    BY T. Kannan and N. Murugan
    Published May 2006
  • Welding Aluminum Sheet Using a High-Power Diode Laser
    From this investigation, it appears making fillet welds in lap joints of aluminum are feasible with a laser.
    BY K. Howard et al.
    Published May 2006
  • Predictions of Microstructures when Welding Automotive Advanced High-Strength Steels
    This research pursued a more reliable way to predict cooling rates for a range of steel thicknesses welded with a number of different processes.
    BY J. E. Gould et al.
    Published May 2006

  • Mechanical Behaviors of Resistance Spot Welds during Pry-Checking Test
    The effects of material type, part thickness, wedge prying angle, pitch distance, and weld button size on checking sensitivity were investigated.
    BY C. L. Tsai et al.
    Published June 2006
  • The Relationship between Boron Content and Crack Properties in FCAW Deposited Metal
    The susceptibility of deposited weld metal to cold cracking as a function of boron content was evaluated.
    BY H.W. Lee
    Published June 2006

  • Characterization of Submerged Arc Welds from the World Trade Center Towers: As-Deposited Welds and Failures Associated with Impact Damage of the Exterior Columns
    Intact and aircraft impact-damaged welds from the exterior columns of the World Trade Center Towers were evaluated in order to learn lessons that can be used to improve future structures.
    BY S. W. Banovic and T. A. Siewert
    Published July 2006
  • Investigating the Bifurcation Phenomenon in Plate Welding
    An integrated experimental and numerical approach was used to examine the buckling phenomenon during the weld cooling cycle.
    BY C. L. Tsai et al.
    Published July 2006

  • Evaluation of Chemical Composition Limits of GMA Welding Electrode Specifications for HSLA-100 Steel
    An algorithm was used to evaluate chemical composition limits of selected GMAW electrode specifications for potential application to welding HSLA-100 steel.
    BY K. Sampath and R. Varadan
    Published August 2006
  • Using a Hybrid Laser Plus GMAW Process for Controlling the Bead Humping Defect
    A defocused laser beam applied in front of a GMAW pool helped suppress formation of bead humping defects.
    BY H. W. Choi et al.
    Published August 2006
  • End Point Detection of Fillet Weld Using Mechanized Rotating Arc Sensor in GMAW
    A geometrical sensing model was developed to detect the end points of joints in GMA fillet welds.
    BY W.-S. Yoo et al.
    Published August 2006

  • Comparison of Buckling Distortion Propensity for SAW, GMAW, and FSWl
    The propensity for buckling distortion was investigated for three different welding processes from welds made on HSLA-65 plate.
    BY S. R. Bhide et al.
    Published September 2006
  • Exploring Solid-State Synthesis of Powder Filler Metals for Vacuum Brazing of Titanium Alloys
    Time and temperature limits in vacuum brazing titanium were evaluated by examining the microstructure and properties of filler metals.
    BY E. Y. Ivanov et al.
    Published September 2006
  • New Developments with C-Mn-Ni High-Strength Steel Weld Metals, Part A - Microstructure
    High-resolution techniques were used to examine the microstructures of shielded metal arc welds in the search for a filler metal composition that provides both high strength and good ductility.
    BY E. Keehan et al.
    Published September 2006

  • Structural Stability of Dissimilar Weld between Two Cr-Mo-V Steels
    The structural stability of welds in 6Cr-Mo-V 8-3-2 and Xl2Cr-Mo-Nb 10-1 steels was studied to better understand the properties of heterogeneous weld joints in creep-resistant steels.
    BY R. Foret et al.
    Published October 2006
  • New Developments with C-Mn-Ni in High-Strength Steel Weld Metals - Part B, Mechanical Properties
    The mechanical properties of shielded metal arc welds with varying compositions of carbon, manganese, and nickel were studied to determine the optimal combination of strength and impact toughness.
    BY E. Keehan et al.
    Published October 2006
  • The Effect of Out-of-Phase Pulsing on Metal Transfer in Twin-Wire GMA Welding at High Current Level
    A study of deposit transfer and arc characteristics showed conventional, nonpulsing gas metal arc welding machines can produce quality weldments.
    BY A. Scotti et al.
    Published October 2006

  • A Genetic Algorithm and Gradient-Descent-Based Neural Network with the Predictive Power of a Heat and Fluid Flow Model for Welding
    A neural network trained with data from numerical heat and fluid flow models was developed to speed parameter calculations for gas tungsten arc welding.
    BY S. Mishra and T. DebRoy
    Published November 2006
  • Looking at the Sensitization of 11-12% Chromium EN 1.4003 Stainless Steels during Welding
    Low-carbon, chromium ferritic steels were investigated for susceptibility to sensitization during continuous cooling after low-heat-input welding.
    BY M. L. Greeff and M. du Toit
    Published November 2006
  • Development of an Explosive Welding Process for Producing High-Strength Welds between Niobium and 6061-T651 Aluminum
    Thin interlayers of niobium and aluminum were used to improve the properties of the joint between thicker plates.
    BY T. A. Palmer et al.
    Published November 2006
  • Effect of Defects on Fatigue Strength of GTAW Repaired Cast Aluminum Alloy
    Porosity in cast aluminum welds was identified with inconsistent fatigue strength.
    BY L. Li et al.
    Published November 2006

  • Simulation of Weld Pool Dynamics in the Stationary Pulsed Gas Metal Arc Welding Process and Final Weld Shape
    A numerical model of pulsed gas metal arc welding accurately predicted weld pool fluid flow convection and final weld shape.
    BY M. H. Cho et al.
    Published December 2006
  • A New Heat Source Model for Keyhole Plasma Arc Welding in FEM Analysis of the Temperature Profile
    A new heat source model for plasma arc welding was developed to consider the configuration of the keyhole and the decay of heat intensity distribution along the workpiece thickness.
    BY C. S. Wu et al.
    Published December 2006
  • Toward a Unified Model to Prevent Humping Defects in Gas Tungsten Arc Welding
    A comprehensive, computational model was developed that can predict and prevent the formation of humping defects.
    BY A. Kumar and T. DebRoy
    Published December 2006
  • Exploring the Mechanical Properties of Spot Welded Dissimilar Joints for Stainless and Galvanized Steels
    The goal of this investigation was to determine the spot welding parameters and to characterize the mechanical properties of dissmilar metal joints.
    BY A. Kumar and T. DebRoy
    Published December 2006