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
    An adaptable method of implementing image processing-based upper surface molten weld pool measurements to facilitate closed loop process control is presented BY C. BALFOUR, J. S. SMITH, AND A. I. Al-SHAMMA’A
    Posted 12/05  |  Published 01/06
  • Predicting and Reducing Liquation-Cracking Susceptibility Based on Temperature vs. Fraction Solid
    Elimination of cracking from welds of highly crack-susceptible aluminum alloys is demonstrated BY G. CAO AND S. KOU
    Posted 12/05  |  Published 01/06
  • Fatigue Behavior of Welded Joints Part 2: Physical Modeling of the Fatigue Process
    Two complementary models were developed to predict fatigue behavior of joints in fillet welds BY P. DARCIS, T. LASSEN, AND N. RECHO
    Posted 12/05  |  Published 01/06
  • Ranking the Resistance of Wrought Superalloys to Strain-Age Cracking
    The controlled heat rate test was used to rank the crack resistance of several alloys, and a correlation between alloy performance and chemical composition was established BY M. D. ROWE
    Posted 01/06  |  Published 02/06
  • Experimental and Numerical Simulation of Restraining Forces in Gas Metal Arc Welded Joints
    The restraining force due to gas metal arc welding has been investigated both numerically and experimentally BY M. A. WAHAB, M. S. ALAM, M. J. PAINTER, AND P. E. STAFFORD
    Posted 01/06  |  Published 02/06
  • Design of Experiment Analysis and Weld Lobe Estimation for Aluminum Resistance Spot Welding
    A systematic experimental study reveals how welding parameters and abnormal process conditions affect the quality of aluminum resistance spot welds BY Y. CHO, W. LI, AND S. J. HU
    Posted 02/06  |  Published 03/06
  • Arc Behavior and Melting Rate in the VP-GMAW Process
    Droplet melting analysis performed using high-speed video synchronized with high-speed data acquisition was used to evaluate arc behavior and melting rate D. D. HARWIG, J. E. DIERKSHEIDE, D. YAPP, and S. BLACKMAN
    Posted 02/06  |  Published 03/06
  • Finite Element Modeling Predicts the Effects of Voids on Thermal Shock Reliability and Thermal Resistance of Power Device
    The thermal-mechanical effects of void size and location in lead-free solder heat-sink attachment of power devices is investigated BY J. CHANG, L. WANG, J. DIRK, AND X. XIE
    Posted 02/06  |  Published 03/06
  • 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.
    Posted 06/06  |  Published 04/06
  • 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
    Posted 06/06  |  Published 04/06
  • 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.
    Posted 06/06  |  Published 04/06
  • Prediction of Ferrite Number of Duplex Stainless Steel Clad Metals Using RSM
    Response surface methodology (RSM) was used to establish a relationship between process parameters and Ferrite Number for duplex stainless steel clad metals. BY T. KANNAN and N. MURUGAN et. al.
    Posted 06/06  |  Published 05/06
  • Welding Aluminum Sheet Using a High-Power Diode Laser
    A look at fillet welds in lap joints of aluminum Alloy 5182. BY K. HOWARD et. al.
    Posted 06/06  |  Published 05/06
  • Predictions of Microstructures when Welding Automotive Advanced High-Strength Steels
    A combination of thermal and microstructural modeling can be used to estimate performance of welds in advanced high-strength steels. BY G. WANG and M. E. BARKEY
    Posted 06/06  |  Published 05/06
  • 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.
    Posted 06/06  |  Published 06/06
  • The Relationship between Boron Content and Crack Porperties 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
    Posted 06/06  |  Published 06/06
  • 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 lesssons that can be used to improve future structures. BY S. W. BANVIC AND T. A. SIEWERT
    Published 07/06
  • 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 07/06
  • Evaluation of Chemcial Composition Limits of GMA Welding Electrode Specifications for HSLA-100 Steel
    An algorithm was used to evaluate chemical composition limits of selected GMAW electroe specifications for potential application to welding HSLA-100 steel. BY K. SAMPATH AND R. VARADAN
    Published 08/06
  • Using a Hyrid 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 08/06
  • End Point Detection of Fillet Weld Using Mechanized Rotating Arc Sensor in GMAW
    A geometrical sensing model was devloped to detect the end points of joints in GMA fillet welds. W. S. YOO et al.
    Published 08/06
  • Comparison of Buckling Distortion Propensity for SAW, GMAW, and FSW
    The propensity for bucklingg distortion was investigated for three diferent welding processes from welds made on HSLA-65 plate. BY S. R. Bhide et al.
    Published 09/06
  • 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 09/06
  • 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 stregth and good ductility. BY E. KEEHAN et al.
    Published 09/06
  • Structural Stability of Dissimilar Weld between Two Cr-Mo-V Steels
    The structural stability of welds in 6Cr-Mo-V-8-3-2 and X12Cr-Mo-Nb 10-1 steels was studied to better understand the properties of heterogeneous weld joints in creep-resistant steels. BY R. FORETT et al.
    Published 10/06
  • New Developments with C-Mn-Ni in High-Strength Steel Weld Metals - Part B, Mechanical Properties
    The mechanical properties of sieelded 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 10/06
  • The Effect of Out-of-Phase Pulsing on Metal Transfer in Twin-Wire GMA Welding at High Current Level
    • A study of deposit transffer and arc characterisics showed conventional, nonpulsing gas metal arc welding machines can produce quaity weldments. BY A. SCOTTI et al.
    Published 10/06
  • 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 11/06
  • Looking at the Sensitization of 11-12% Chromium EN 1.4003 Stainlesss 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 11/06
  • 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 propertiess of the joint between thicker plates. BY T. A. PALMER et al.
    Published 11/06
  • Effect of Defects on Fatigue Stregth of GTAW Repaired Cast Aluminum Alloy
    • Porosity in cast aluminum welds was identified with inconsistent fatigue strength. BY L. Li et al.Published 11/06
  • 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 12/06
  • 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 soncider the configuration of the keyhole and the decay of heat intensity distribution along the workpiece thickness BY C. S. Wu et al.
    Published 12/06
  • Toward a Unified Model to Prevent Humping Defects in Gas Tungsten Arc Welding
    • A comprehensive, comutational model was developed that can predict and prevent the formation of humping defects. BY A. KUMAR AND T. DEBROY
    Published 12/06
  • Exploring the Mechancical 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 characterized th emchanical properties of dissimilar metal joints. BY M. ALENIUS et al.
    Published 12/06