WJ Supplements - 2002

RESEARCH PAPERS

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  • Development of Appropriate Resistance Spot Welding Practice for Transformation-Hardened Steels
    A repeatable and effective methodology for producing a temper diagram for different steels is demonstrated. BY W. L. CHUKO AND J. E. GOULD
    Posted 2/02  |  Published1/02
  • Stresses in Laser-Beam-Welded Lap Joints Determined by Outer Surface Strains
    Attaching two or three strain gauges to the outer surface of overlap sheets near the joint can be used as a strain gauge method for determining inaccessible stresses. BY S. ZHANG
    Posted 2/02  |  Published1/02
  • A Study on the Modeling of Magnetic Arc Deflection and Dynamic Analysis of Arc Sensor
    A magnetic field applied to a welding arc produced an output signal beneficial for an arc sensor. BY Y. H. KANG AND S. J. NA
    Posted 2/02  |  Published1/02
  • Prediction of Heat-Affected Zone Characteristics in Submerged Arc Welding of Structural Steel Pipes
    Mathematical models were developed to study the effects of process variables and heat input on the HAZ of submerged arc welds in structural steel pipes. BY V. GUNARAJ AND N. MURUGAN
    Posted 2/02  |  Published2/02
  • Retained Austenite as a Hydrogen Trap in Steel Welds
    Hydrogen trapping is investigated as a means of improving resistance to hydrogen-assisted cracking in HSLA steels. BY Y. D. PARK, I. S. MAROEF, A. LANDAU, AND D. L. OLSON
    Posted 2/02  |  Published2/02
  • Design-of-Experiments Study to Examine the Effect of Polarity on Stud Welding
    An investigation of the factors that influence the quality of short duration drawn arc stud welding of steels. BY S. RAMASAMY, J. GOULD, AND D. WORKMAN
    Posted 2/02  |  Published2/02
  • Monte Carlo Simulation of Heat-Affected Zone Microstructure in Laser-Beam-Welded Nickel Sheet
    Reasonable agreement was obtained between experimental results and simulated grain growth in the heat-affected zone. BY M.-Y. LI AND E. KANNATEY-ASIBU, JR.
    Posted March, 2002  |  Published in the Welding Journal March, 2002
  • Statistical Process Design for Robotic GMA Welding of Sheet Metal
    An optimization procedure minimizes cycle time while achieving small fractions of nonconforming welds. BY T. T. ALLEN, R. W. RICHARDSON, D. P. TAGLIABUE, AND G. P. MAUL.
    Posted March, 2002  |  Published in the Welding Journal May, 2002
  • Welding Process Effects in Weldability Testing of Steels
    Minimum preheats for avoiding weld deposit hydrogen-induced cracking can depend on the welding process used. BY G. ATKINS, D. THIESSEN, N. NISSLEY, AND Y. ADONYI.
    Posted March, 2002  |  Published in the Welding Journal April, 2002
  • Process Sensitivity of GMAW: Aluminum vs. Steel
    Aluminum proves more sensitive to changes in current and wire-feed speed in comparison to steel . BY T. P. QUINN.
    Posted March, 2002  |  Published in the Welding Journal April, 2002
  • Development of AppropriateResistance Spot Welding Practicefor Transformation-Hardened Steels
    A repeatable and effective methodology for producing a temper diagram fordifferent steels is demonstrated. BY W. L. CHUKO AND J. E. GOULD
    Posted 2/02  |  Published1/02
  • Stresses in Laser-Beam-Welded Lap JointsDetermined by Outer Surface Strains
    Attaching two or three strain gauges to the outer surface of overlapsheets near the joint can be used as a strain gauge method fordetermining inaccessible stresses. BY S. ZHANG
    Posted 2/02  |  Published1/02
  • A Study on the Modeling of Magnetic ArcDeflection and Dynamic Analysisof Arc Sensor
    A magnetic field applied to a welding arc produced an output signalbeneficial for an arc sensor. BY Y. H. KANG AND S. J. NA
    Posted 2/02  |  Published1/02
  • Prediction of Heat-Affected ZoneCharacteristics in Submerged Arc Weldingof Structural Steel Pipes
    Mathematical models were developed to study the effects of process variables and heatinput on the HAZ of submerged arc welds in structural steel pipes. BY V. GUNARAJ AND N. MURUGAN
    Posted 2/02  |  Published2/02
  • Retained Austenite as a Hydrogen Trapin Steel Welds
    Hydrogen trapping is investigated as a means of improving resistanceto hydrogen-assisted cracking in HSLA steels. BY Y. D. PARK, I. S. MAROEF, A. LANDAU, AND D. L. OLSON
    Posted 2/02  |  Published2/02
  • Design-of-Experiments Study to Examinethe Effect of Polarity on Stud Welding
    An investigation of the factors that influence the quality of short durationdrawn arc stud welding of steels. BY S. RAMASAMY, J. GOULD, AND D. WORKMAN
    Posted 2/02  |  Published2/02
  • Monte Carlo Simulationof Heat-Affected Zone Microstructurein Laser-Beam-Welded Nickel Sheet
    Reasonable agreement was obtained between experimental results andsimulated grain growth in the heat-affected zone. BY M.-Y. LI AND E. KANNATEY-ASIBU, JR.
    Posted March, 2002  |  Published in the Welding Journal March, 2002
  • Statistical Process Design for RoboticGMA Welding of Sheet Metal
    An optimization procedure minimizes cycle time while achieving small fractions ofnonconforming welds. BY T. T. ALLEN, R. W. RICHARDSON, D. P. TAGLIABUE, AND G. P. MAUL.
    Posted March, 2002  |  Published in the Welding Journal May, 2002
  • Welding Process Effects in WeldabilityTesting of Steels
    Minimum preheats for avoiding weld deposit hydrogen-induced cracking candepend on the welding process used. BY G. ATKINS, D. THIESSEN, N. NISSLEY, AND Y. ADONYI.
    Posted March, 2002  |  Published in the Welding Journal April, 2002
  • Process Sensitivity of GMAW:Aluminum vs. Steel
    Aluminum proves more sensitive to changes in current andwire-feed speed in comparison to steel. BY T. P. QUINN.
    Posted March, 2002  |  Published in the Welding Journal April, 2002
  • Segregation of Phosphorus and Sulfur inHeat-Affected Zone Hot Cracking of Type308 Stainless Steel
    Through the use of Auger analysis, sulfur is characterized as havinga greater effect on heat-affected zone cracking than phosphorous. BY L. LI AND R. W. MESSLER, JR.
    Posted May, 2002  |  Published in the Welding Journal May, 2002
  • A Study of Weld Pore Sensitivityof Self-Shielded, Flux Cored Electrodes
    An investigation revealed both nitrogen and oxygen content can affectthe formation of porosity in welds made using FCAW-S electrodes. BY Q. WEI, Q. HU, F. GUO, and D. J. XIONG
    Posted May, 2002  |  Published in the Welding Journal June, 2002
  • Improved Ferrite Number Prediction in Stainless Steel Arc Welds Using Artificial Neural Networks - Part 1: Neural Network Development
    The development of a new neural network model for predicting Ferrite Number more accurately than existing constitution diagrams is described. BY J.M. VITEK, Y.S. ISKANDER AND E.M. OBLOW
    Posted May, 2002  |  Published in the Welding Journal February, 2000
  • Improved Ferrite Number Prediction in Stainless Steel Arc Welds Using Artificial Neural Networks - Part 2: Neural Network Results
    A new neural model predicts Ferrite Number with significantly more accuracy than existing constitution diagrams. BY J.M. VITEK, Y.S. ISKANDER AND E.M. OBLOW
    Posted May, 2002  |  Published in the Welding Journal February, 2000
  • Primary Circuit Dynamic ResistanceMonitoring and its Application to QualityEstimation during Resistance Spot Welding
    Weld strength and nugget diameter were estimated by using primary circuitprocess parameter as a real-time in-process monitoring system. BY Y. CHO and S. RHEE
    Posted June, 2002  |  Published in the Welding Journal June, 2002
  • The Stress Field Characteristics in theSurface Mount Solder Joints underTemperature Cycling: Temperature Effectand Its Evaluation
    Dynamic stress distribution was analyzed with regard to the temperature cyclinghistory of the solder joint. BY Y. Y. QIAN, X. MA, AND F. YOSHIDA
    Posted June, 2002  |  Published in the Welding Journal June, 2002
  • Fume Model for Gas Metal Arc Welding
    Metal evaporation and condensation calculations predict fume formation rate forDC-positive operation in globular and spray modes. BY C. J. REDDING
    Posted June, 2002  |  Published in the Welding Journal June, 2002
  • A Study of Weld Pore Sensitivityof Self-Shielded, Flux Cored Electrodes
    An investigation revealed both nitrogen and oxygen content can affectthe formation of porosity in welds made using FCAW-S electrodes. BY Q. WEI, Q. HU, F. GUO, and D. J. XIONG
    Posted June, 2002  |  Published in the Welding Journal May, 2002
  • ANSI/AWS A5.1-91 E6013 RutileElectrodes: The Effect of Calcite
    All-weld-metal mechanical properties and microstructure, arc stability, andoperational characteristics were investigated. BY N. M. R. DE RISSONE, J. P. FARIAS, I. DE SOUZA BOTT, AND E. S. SURIAN
    Posted July, 2002  |  Published in the Welding Journal July, 2002
  • Selecting Parameters for GMAW UsingDimensional Analysis
    Regression and dimensional analysis of experimental data establishedrelationships between welding parameters and process variables. BY P. E. MURRAY
    Posted July, 2002  |  Published in the Welding Journal July, 2002
  • Alloying and Microstructural Managementin Developing SMAW Electrodesfor HSLA-100 Steel
    To determine the optimal composition of SMAW electrodes for use with HSLA-100 steel, three sets of experimental welding electrodes were developed. BY W. WANG and S. LIU
    Posted July, 2002  |  Published in the Welding Journal July, 2002
  • Estimation and Prediction of HAZ Softeningin Thermomechanically Controlled-Rolledand Accelerated-Cooled Steel
    Investigations were made into HAZ hardness and tensile strength in welds madewith different heat inputs in fine-grained, ferritic-pearlitic TMCP steel. BY K.-S. BANG and W.-Y. KIM
    Posted July, 2002  |  Published in the Welding Journal August, 2002
  • Joining Depleted Uranium to High-StrengthAluminum Using an Explosively CladNiobium Interlayer
    Explosive and electron beam welding processes were developed to producejoints between the two materials. BY J. W. ELMER, P. TERRILL, D. BRASHER, AND D. BUTLER
    Posted July, 2002  |  Published in the Welding Journal August, 2002
  • The Development of New Silver-FreeBrazing Alloys for Steel Tubular Assembly
    A new cost-efficient, silver-free alloy meets tensile and fatigue strengthrequirements for tubular joints on bicycle frames. BY D. M. JACOBSON, S. P. S. SANGHA, A. GALES, AND E. E. SCHMID
    Posted July, 2002  |  Published in the Welding Journal August, 2002
  • The Effect of Ferro-Alloy Additionsand Depth on the Quality ofUnderwater Wet Welds
    In an effort to improve weld properties, 60 different coating formulations weredeveloped and welds were made at various depths to 300 ft. BY M. D. ROWE, S. LIU, AND T. J. REYNOLDS
    Posted July, 2002  |  Published in the Welding Journal August, 2002
  • Investigation of Monitoring Systems forResistance Spot Welding
    A variety of sensor systems were studied to find which oneprovided the most information about nugget formation. BY C.-S. CHIEN AND E. KANNATEY-ASIBU, JR.
    Posted August, 2002  |  Published in the Welding Journal September, 2002
  • Joining Using Semisolid Metals
    Semisolid metals can be used as filler metal to obtain jointsas strong as the base material. BY P. F. MENDEZ, C. S. RICE, AND S. B. BROWN
    Posted August, 2002  |  Published in the Welding Journal September, 2002
  • Weldability Testing of DissimilarCombinations of 5000- and 6000-SeriesAluminum Alloys
    The Sigmajig weldability test was used to quantify the relative crackingsusceptibility of dissimilar combinations of sheet alloys. BY M. M. MOSSMAN and J. C. LIPPOLD
    Posted August, 2002  |  Published in the Welding Journal September, 2002
  • WELDING RESEARCH alloy 2219. Liquation Mechanisms in Multicomponent Aluminum Alloys during Welding
    Three mechanisms cover most, if not all, wrought aluminum alloys and, for a given alloy and temper, the mechanism can vary from heat to heat . BY C. HUANG AND S. KOU
    Posted 9/02  |  Published 10/02
  • Aging of Brazed Joints ‹ Interface Reactions in Base Metal/Filler Metal Couples ‹ Part 1: Low-Temperature Ag-Cu-Ti Filler Metal
    A study of filler metal/base metal interactions was conducted on brazements of alloys used in advanced heat engines. BY P. T. VIANCO, F. M. HOSKING, J. J. STEPHENS, C. A. WALKER, M. K. NEILSEN, S. J. GLASS, AND S. L. MONROE
    Posted 9/02  |  Published 10/02
  • Dual Beam Laser Welding
    An experiment in which a high-power CO2 laser beam was split into two equalpower beams that were then used as a welding heat source indicated the dualbeam laser could significantly improve weld quality. BY J. XIE
    Posted 9/02  |  Published 10/02
  • Microstructural Variations in a High-Strength Structural Steel Weld under Isoheat Input Conditions
    Weld bead morphologies influence weld cooling rate and hence the acicular ferrite content in steel . BY B. BASU AND R. RAMAN
    Posted 11/02  |  Published 11/02
  • The Effect of Multiple Postweld Heat Treatment Cycles on the Weldability of Waspaloy®
    Changes in grain boundary character distribution after multiple PWHT cycles were found to affect HAZ liquation cracking during repair welding. BY M. QIAN AND J. C. LIPPOLD
    Posted 11/02  |  Published 11/02
  • WELDING RESEARCH NOVEMBER 2002 -S 256 Aging of Braze Joints: Interface Reactions in Base Metal/Filler Metal Couples, Part II: High-Temperature Au-Ni-Ti Braze Alloy
    An examination of the effects of aging in brazed joints made with 81Au-17.5Ni- 1.5Ti filler metal and Thermo-Spanª or AISI Type 347 stainless steel base metals revealed excellent wetting and spreading. BY P. T. VIANCO, F. M. HOSKING, J. J. STEPHENS, C. A. WALKER, M. K. NEILSEN, S. J. GLASS, AND S. L. MONROE
    Posted 11/02  |  Published 11/02
  • Keyhole Double-Sided Arc Welding Process
    A process is developed for deep joint penetration welding in a narrow groove on plate up to 1/2-in. thick. BY Y. M. ZHANG, S. B. ZHANG, AND M. JIANG.
    Posted 11/02  |  Published 11/02
  • WELDING RESEARCH actual weldments. Introduction SUPPLEMENT TO THE WELDING JOURNAL, December 2002 Determination of Gradients in Mechanical Properties of 2.25Cr-1Mo Weldments Using Shear-Punch Tests
    A test technique was developed to more accurately determine mechanical properties of individual regions of the HAZ. BY V. KARTHIK, K. V. KASIVISWANATHAN, K. LAHA, AND B. RAJ
    Posted 11/02  |  Published 11/02
  • Chloride Contributions in Flux-Assisted GTA Welding of Magnesium Alloys
    Experiments demonstrated chlorides increased arc voltage, arc temperature, and weld penetration, with cadmium chloride being the most effective. BY M. MARYA AND G. R. EDWARDS
    Posted 11/02  |  Published 11/02
  • Weld Morphology and Thermal Modeling in Dual-Beam Laser Welding
    Weld morphology in dual-beam laser welding was investigated and mathematical modeling was performed to understand the impact of the heat flow pattern on dual-beam laser welds. BY J. XIE
    Posted 11/02  |  Published 11/02
  • Numerical Simulation of Sleeve Repair Welding of In-Service Gas Pipelines
    A model was developed to predict conditions for sucessful sleeve repair of in-service gas pipelines. BY I.-W. BANG, Y.-P. SON, K. H. OH, Y.-P. KIM, AND W.-S. KIM
    Posted 11/02  |  Published 11/02
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