NIST Special PublicationThe Institute, 2002 |
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... means and methods for comparing standards used in science , engineering , manufacturing , commerce , industry , and education with the standards adopted or recognized by the Federal Government . As an agency of the U.S. Commerce ...
... means and methods for comparing standards used in science , engineering , manufacturing , commerce , industry , and education with the standards adopted or recognized by the Federal Government . As an agency of the U.S. Commerce ...
Page 5
... mean , standard deviation , and coefficient of variation were calculated . The optimum GMAW - P was selected by choosing the pulse parameter which resulted in the least standard deviation and the coefficient of variation , to produce ...
... mean , standard deviation , and coefficient of variation were calculated . The optimum GMAW - P was selected by choosing the pulse parameter which resulted in the least standard deviation and the coefficient of variation , to produce ...
Page 7
... mean average current , standard deviation , and coefficient of variance , to determine the suitable pulse parameter . The level of arc stability was assessed from the regularity of average current per cycle time . The standard deviation ...
... mean average current , standard deviation , and coefficient of variance , to determine the suitable pulse parameter . The level of arc stability was assessed from the regularity of average current per cycle time . The standard deviation ...
Page 8
... means . The welding torch was mounted on four - wheeled variable speed tractor ( Esab A2 Mini trac ) . It was moved above the base metal and welding was carried out ( down hand type ) in the rolling direction of base metal . The torch ...
... means . The welding torch was mounted on four - wheeled variable speed tractor ( Esab A2 Mini trac ) . It was moved above the base metal and welding was carried out ( down hand type ) in the rolling direction of base metal . The torch ...
Page 10
... mean average current for the two droplets detachment during peak duration . The pulsed current waveform with less variation in the mean average current for the three droplets detachment during peak duration is presented in Fig.13 ...
... mean average current for the two droplets detachment during peak duration . The pulsed current waveform with less variation in the mean average current for the three droplets detachment during peak duration is presented in Fig.13 ...
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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.