NIST Special PublicationThe Institute, 2002 |
From inside the book
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Page iii
... Keyhole Formation in VPPAW Prof. R. Kovacevic , SMU , Richardson , Texas ... A3-2 Systems Technology for Variable Polarity Plasma Arc Welding of Aluminum Alloys Dr. B. Zheng , EWI , Columbus , Ohio ........ .... 87 .......... 97 105 ...
... Keyhole Formation in VPPAW Prof. R. Kovacevic , SMU , Richardson , Texas ... A3-2 Systems Technology for Variable Polarity Plasma Arc Welding of Aluminum Alloys Dr. B. Zheng , EWI , Columbus , Ohio ........ .... 87 .......... 97 105 ...
Page v
... Keyhole Dynamics : Simulation and Experiment Dr. D. F. Farson , OSU , Columbus , Ohio 289 B3-2 Finite Element Modeling on Welding Processes and Welding Phenomena Dr. B. Palotas , Budapest University of Technology and Economics , Hungary ...
... Keyhole Dynamics : Simulation and Experiment Dr. D. F. Farson , OSU , Columbus , Ohio 289 B3-2 Finite Element Modeling on Welding Processes and Welding Phenomena Dr. B. Palotas , Budapest University of Technology and Economics , Hungary ...
Page 28
... Keyhole Detection in Aluminum Alloys . Welding Journal 5 : 49 to 52.J. 27. Metcalfe C. and Quigley M. B. C .. 1975. Keyhole Stability in Plasma Arc Welding . Welding Journal 11 : 401 to 404 . 28. Steffens H. D .. 1972. Automatic Control ...
... Keyhole Detection in Aluminum Alloys . Welding Journal 5 : 49 to 52.J. 27. Metcalfe C. and Quigley M. B. C .. 1975. Keyhole Stability in Plasma Arc Welding . Welding Journal 11 : 401 to 404 . 28. Steffens H. D .. 1972. Automatic Control ...
Page 95
Session A3 : Sensing and Control II : VPPAW MONITORING STABILITY OF KEYHOLE FORMATION IN VPPAW G. Tao , 95.
Session A3 : Sensing and Control II : VPPAW MONITORING STABILITY OF KEYHOLE FORMATION IN VPPAW G. Tao , 95.
Page 97
... keyhole mode of VPPA welding process is used to characterize the presence of the keyhole and its size . Short - time spectrum analysis is used to study the frequency characteristics of the sound signal during the welding process . Short ...
... keyhole mode of VPPA welding process is used to characterize the presence of the keyhole and its size . Short - time spectrum analysis is used to study the frequency characteristics of the sound signal during the welding process . Short ...
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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
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.