NIST Special PublicationThe Institute, 2002 |
From inside the book
Results 1-5 of 100
Page 10
... Figure 5 : Typical pulsed voltage and current waveform with short - circuit Ip = 260.8 A ; Tp = 3 ms ; I ̧ = 20 A ; T ̧ = 6 ms ; T1 = 4.05 ms ; Vp = 25.32 V ; VB = 15.98 V ; IAV 108.4 A ; VAV = 19.08 V ; WF - 100 mm / s ; and Ws = 10.0 ...
... Figure 5 : Typical pulsed voltage and current waveform with short - circuit Ip = 260.8 A ; Tp = 3 ms ; I ̧ = 20 A ; T ̧ = 6 ms ; T1 = 4.05 ms ; Vp = 25.32 V ; VB = 15.98 V ; IAV 108.4 A ; VAV = 19.08 V ; WF - 100 mm / s ; and Ws = 10.0 ...
Page 13
... Figure 8 : The waveform with less variation in the average current for the one droplet detachment during background duration ( Weld no . EL - 8 ) . Ip = 196.8 A ; Tp 5 ms ; IB = 20 A ; TB = 6 ms ; TD = 5 ms ; Vp 22.9 V ; VB = 15.03 V ...
... Figure 8 : The waveform with less variation in the average current for the one droplet detachment during background duration ( Weld no . EL - 8 ) . Ip = 196.8 A ; Tp 5 ms ; IB = 20 A ; TB = 6 ms ; TD = 5 ms ; Vp 22.9 V ; VB = 15.03 V ...
Page 14
... Figure 10 : Voltage signal showing two droplets detachment during peak duration . Voltage , V Third droplet detachment time = 9.4 ms Second droplet detachment time = 7.4 ms Filler First droplet detachment Third droplet detachment during ...
... Figure 10 : Voltage signal showing two droplets detachment during peak duration . Voltage , V Third droplet detachment time = 9.4 ms Second droplet detachment time = 7.4 ms Filler First droplet detachment Third droplet detachment during ...
Page 15
... Figure 12 : The waveform with less variation in the average current for the two droplets detachment during peak duration ( Weld no . EL - 10 ) . Ip 168.3 A ; Tp - 9 ms ; IB = 20 A ; TB = 6 ms ; TD = 4.42 ms ; Vp = 22.6 V ; VB = 15.32 V ...
... Figure 12 : The waveform with less variation in the average current for the two droplets detachment during peak duration ( Weld no . EL - 10 ) . Ip 168.3 A ; Tp - 9 ms ; IB = 20 A ; TB = 6 ms ; TD = 4.42 ms ; Vp = 22.6 V ; VB = 15.32 V ...
Page 16
... Figure 14 : Standard deviation of average current versus peak energy 2.5 2.0 Region 2 1.5 1.0 0.5 0 Region 4 Region 3 Region 1 10 14 18 22 26 30 34 38 42 46 Peak Energy ( 1 ) Figure 15 : Coefficient of variation of average current ...
... Figure 14 : Standard deviation of average current versus peak energy 2.5 2.0 Region 2 1.5 1.0 0.5 0 Region 4 Region 3 Region 1 10 14 18 22 26 30 34 38 42 46 Peak Energy ( 1 ) Figure 15 : Coefficient of variation of average current ...
Contents
3 | |
21 | |
31 | |
39 | |
47 | |
57 | |
71 | |
79 | |
147 | |
155 | |
173 | |
183 | |
203 | |
211 | |
223 | |
233 | |
87 | |
97 | |
105 | |
117 | |
125 | |
137 | |
241 | |
251 | |
265 | |
281 | |
297 | |
317 | |
Other editions - View all
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
Popular passages
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.