NIST Special PublicationThe Institute, 2002 |
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Results 1-5 of 43
Page 3
... signal especially pulsed current waveform as time function , contains essential information about physical phenomena in arc . Therefore , the average current per pulse cycle time was measured from the pulsed current waveforms using ...
... signal especially pulsed current waveform as time function , contains essential information about physical phenomena in arc . Therefore , the average current per pulse cycle time was measured from the pulsed current waveforms using ...
Page 6
... signals using two 5 kHz low pass passive filters as shown in Fig . 2. Totally , two filters were designed and fabricated . The first one was used for the pulsed voltage signal and the second one for the pulsed current signal . These ...
... signals using two 5 kHz low pass passive filters as shown in Fig . 2. Totally , two filters were designed and fabricated . The first one was used for the pulsed voltage signal and the second one for the pulsed current signal . These ...
Page 7
... Signal A typical pulsed current waveform is shown in Fig . 3. Area under every pulsed current waveform ( A. ms ) per cycle time was calculated using AutoCAD 2000 and a self - developed computer package EL - JS . The average current per ...
... Signal A typical pulsed current waveform is shown in Fig . 3. Area under every pulsed current waveform ( A. ms ) per cycle time was calculated using AutoCAD 2000 and a self - developed computer package EL - JS . The average current per ...
Page 10
... signal showing one droplet detachment during background duration Zone ' E ' The droplet detachment was apparently the spray type in the zone ' E ' , where Ip > 168A and Tp > Tp max . But , the molten filler metal tip was prolonged and ...
... signal showing one droplet detachment during background duration Zone ' E ' The droplet detachment was apparently the spray type in the zone ' E ' , where Ip > 168A and Tp > Tp max . But , the molten filler metal tip was prolonged and ...
Page 11
... signal showing one droplet detachment during peak duration Selection of Suitable GMAW - P Parameter and Type of Droplet Detachment Average pulse current has been one of the criteria considered for selection of the most suitable pulse ...
... signal showing one droplet detachment during peak duration Selection of Suitable GMAW - P Parameter and Type of Droplet Detachment Average pulse current has been one of the criteria considered for selection of the most suitable pulse ...
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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.