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WJ Supplements - 2007
RESEARCH PAPERS
Research Papers posted are available in PDF format ONLY.
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A method using single-layer welds proved useful for estimating HAZ toughness of construction structural steels. BY H. Furuya et al. Published January 2007 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 2007 Two advanced high-strength steels were studied to determine the critical fusion zone size for nugget pullout. BY X. Sun et al. Published January 2007 A real-number-based genetic algorithm and a neural network can be used to quickly determine the welding variable combinations needed to achieve a target gas metal arc fillet weld geometry. BY A. Kumar et al. Published January 2007 A methodology was developed to predict fusion depth and width in gas metal arc welding. BY N. Okui et al. Published February 2007 Weld joints in structural steels were examined to determine HAZ toughness, then correlated to the steels' chemical composition. BYH. Furuya et al. Published February 2007 Concentration gradients were used to explain the differences in martensite layer widths in the partially mixed zone of dissmilar welds. BY J. N. DuPont and C. S. Kusko Published February 2007 Laser Engineered Net Shaping was investigated as a means of producing a mechanically sound weld that functions in elevated-temperature service. BY J. D. Farren et al. Published March 2007 A lubricant was found that almost doubles the electrode life of a nonlubricated surface. BY M. Rashid et al. Published March 2007 An algorithm was developed to use image data to predict spot weld quality. BY D. Kim et al. Published March 2007 A study was conducted to systematically investigate the effects of aluminum sheet surface conditions on electrode life. BY Z. Li et al. Published April 2007 A new system based on charge-coupled device sensors was developed to effectively track weld joints. BY J. X. Xue et al. Published April 2007 A 16-run fractional factorial experiment was used to analyze the effects of nine friction stir welding input parameters on measured process outputs. BY J. H. Record et al. Published April 2007 The effect of nitrogen addition on the tendency for crater cracks to develop was evaluated. BY D. D. Nage and V. S. Raja Published April 2007 The electron beam process overcomes problems associated with welding magnesium. BY C. Chi et al. Published May 2007 The solid-state, heat-free characteristics of magnetic pulse welding make it an attractive process for joining dissimilar metals. BY T. Aizawa et al. Published May 2007 This study compares the mechanical properties of three supermartensitic pipe steels welded with different consumables and conditions. BY J. E. Ramirez Published May 2007 Quadratic models developed in terms of flux ingredients help predict the transfer of certain elements into the weld pool. BY .P. Kanjilal et al Published May 2007 The electron beam process overcomes problems associated with welding magnesium. BY G. Padmanabham et al. Published June 2007 The steels showed similar overall welding behavior with both hotdipped galvanneal and galvanize coatings. BY M. Tumuluru Published June 2007 The effect of chromium on the hydrogen cracking susceptibility of Fe-Al weld cladding was investigated. BY J. R. Regina et al. Published June 2007 Use of an ytterbium fiber-optic laser was examined for low-speed keyhole welding of heat-treatable aluminum. BY A. G. Paleocrassas et al. Published June 2007 Experimental trials indicated friction stir welding is a technically feasible process to join high-strength steel. BY P. J. Konkol et al. Published July 2007 Penetration and bead width were shown to increase with the percentage of electrode positive polarity during unbalanced square wave AC welding BY M. A. R. Yarmuch et al. Published July 2007 The slope of the material's connection plane with respect to the normal plane of the plate was studied for its effect on stress distribution< br/> BY Z. Abdulaliyev et al. Published July 2007 Phase and structural transformations of diffusion welds were examined for factors responsible for joint quality.< br/> BY V. V. Rybin et al. Published July 2007 Results showed it is possible to simulate the microstructure evolution and hardness in the HAZ of heat-treatable aluminum laser beam welds. BY A. D. Zervaki et al. Published August 2007 The presence of oxygen in the shielding gas was shown to increase the weld metal nitrogen content, stabilize the arc, suppress degassing, and curb porosity. BY M. du Toit et al. Published August 2007 A novel welding process adds a GTAW torch to a conventional GMAW system to create a bypass arc for increased melting current and a controlled base current. BY K. H. Li et al. Published August 2007 An algorithm was designed to maintain complete joint penetration while maximizing productivity by using the fastest weld speed. BY M. Ericsson et al. Published August 2007 Measurements were made of the effects of helium on the weldability of Types 304 and 316LN stainless steels. BY M. H. Tosten et al. Published August 2007 The addition of laser heat to the gas metal arc process was examined as a method to suppress deposit undulations. BY M. H. Cho and D. F. Farson Published September 2007 Overload failure of truss connections in the WTC collapse went through the heat-affected zone of the base metal. BY S. W. Banovic and T. A. Siewert Published September 2007 Calcite and fluoride compounds were added to the flux composition to see their influence on hydrogen levels. BY J. du Plessis et al. Published September 2007 A method of fusion welding superaustenitic stainless steels holds promise for circumventing corrosion and cracking problems. BY T. D. Anderson et al. Published September 2007 Exothermic reaction additions to the flux of FCAW consumable electrodes demonstrated significant increases in arc process efficiency. BY S. H. Malene et al. Published October 2007 Solidification and macrosegregation were studied in welds made with filler metals dissimilar in composition from the workpiece. BY S. Kou and Y. K. Yang Published October 2007 Temperature fields, cooling rates, tool torque, stir zone geometry, and magnesium concentration profiles were examined. BY R. Nandan et al. Published October 2007 The algorithms used to process the image of a dot-matrix laser pattern reflected from the weld pool surface were examined. BY H. S. Song and Y. M. Zhang Published October 2007 Two new mechanisms for fusion-boundary macrosegregation are proposed. BY Y. K. Yang and S. Kou Published November 2007 Extensive corrosion in leaking brazed joints was found to be the cause for failures in welding transformers. BY D. R. Sigler et al. Published November 2007 Stoichiometric mixtures were studied in self-shielded flux cored electrode formulations. BY S. H. Malene et al. Published November 2007 The Discontinuous Weld Bead Defect in High-Speed Gas Metal Arc Welds Causes and remedies for bead humping in gas metal arc welding are presented. BY T. C. Nguyen et al. Published November 2007 A hybrid brazing process allows the joining of very small and complex components. BY Fr.-W. Bach et al. Published December 2007 Mechanisms are proposed to explain why severe macrosegration can occur when welding with filler metals dissimilar to the base metal. BY Y. K. Yang and S. Kou Published December 2007 A diagnostic tool was proven useful in transferring beam parameters between different electron beam welding machines. BY T. A. Palmer et al. Published December 2007 |