NIST Special PublicationThe Institute, 2002 |
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Results 1-5 of 31
Page iii
... Pulse Current A1-3 A1-4 A1-5 Dr. B. Zheng , EWI , Columbus , Ohio .......... Optimization of PGMAW Using Online Observation and Statistical Data S. Nordbruch , University of Bremen , Germany Through the Arc Tracking of 5G Narrow Gap ...
... Pulse Current A1-3 A1-4 A1-5 Dr. B. Zheng , EWI , Columbus , Ohio .......... Optimization of PGMAW Using Online Observation and Statistical Data S. Nordbruch , University of Bremen , Germany Through the Arc Tracking of 5G Narrow Gap ...
Page 3
... pulse parameter to welding . The 1.2mm diameter of ER 5356 filler metal and 6mm thick AA 5083 Al - Mg alloy base metal were used throughout welding experiments . Electrical signal especially pulsed current waveform as time function ...
... pulse parameter to welding . The 1.2mm diameter of ER 5356 filler metal and 6mm thick AA 5083 Al - Mg alloy base metal were used throughout welding experiments . Electrical signal especially pulsed current waveform as time function ...
Page 4
... Pulse cycle time ( ms ) , T = Tp + TË ; Pulse Frequency , FPU = 1 / T IAV -Average current ( A ) ; IAV = ( Ip Tp + IB TB ) / ( Tp + TB ) Ir - Spray current level ( A ) ; Above IT - Spray metal transfer Below IT- Globular metal transfer ...
... Pulse cycle time ( ms ) , T = Tp + TË ; Pulse Frequency , FPU = 1 / T IAV -Average current ( A ) ; IAV = ( Ip Tp + IB TB ) / ( Tp + TB ) Ir - Spray current level ( A ) ; Above IT - Spray metal transfer Below IT- Globular metal transfer ...
Page 5
... pulse cycle time was measured for the various types of droplet detachments and the values of mean , standard deviation , and coefficient of variation were calculated . The optimum GMAW - P was selected by choosing the pulse parameter ...
... pulse cycle time was measured for the various types of droplet detachments and the values of mean , standard deviation , and coefficient of variation were calculated . The optimum GMAW - P was selected by choosing the pulse parameter ...
Page 7
... pulse by pulse cycle time . Statistical analysis was carried out on the basis of mean average current , standard deviation , and coefficient of variance , to determine the suitable pulse parameter . The level of arc stability was ...
... pulse by pulse cycle time . Statistical analysis was carried out on the basis of mean average current , standard deviation , and coefficient of variance , to determine the suitable pulse parameter . The level of arc stability was ...
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Common terms and phrases
algorithm analysis angular distortion arc length arc voltage average current background duration boundary butt weldment calculated camera coefficient of variation detachment during peak developed droplet detachment dynamic effect electrode equation experimental Figure filler metal Friction Stir Welding geometry GMAW GMAW-P GTA weld GTAW hoop stress increase interface keyhole laser machine vision martensite material measured mechanical melting metal arc welding method microstructure mm/min mm/s mode molten pool monitoring NIST oscillation frequency peak duration penetration plasma arc welding plate predicted procedure pulsed current resetting residual stress robot rotational sensor shear stress shown in Fig splash strain structure surface technique Technology thermal types of droplet variation VPPAW waveform weld diameter weld fixture weld joint weld pool weld quality welding current Welding Journal welding parameters welding power supply welding process welding simulation welding speed width wire feed speed workpiece zone
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Page ii - Certain commercial equipment, instruments, or materials are identified in this paper in order to adequately specify the experimental procedure. Such identification does not imply recommendation or endorsement by the National Institute of Standards and Technology, nor does it imply that the materials or equipment identified are necessarily the best available for the purpose.
Page 94 - Proceedings of the institution of Mechanical Engineers; Part B: Journal of Engineering Manufacture, Vol. 207, pp.9- 1 4, 1 993 [4] Soar RC and Dickens, PM, "Design of Laminated Tooling for High Pressure Die -Casting," Proceedings-SPIE The international society for Optical Engineering, pp.
Page 123 - Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy.