NIST Special PublicationThe Institute, 2002 |
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Page 21
... ) . These vision systems can be characterized into band - pass arc light filtering , Edison Welding Institute , 1250 Arthur E. Adams Drive , Columbus , OH 43221 coaxial viewing , high - shutter - speed camera synchronizing 21.
... ) . These vision systems can be characterized into band - pass arc light filtering , Edison Welding Institute , 1250 Arthur E. Adams Drive , Columbus , OH 43221 coaxial viewing , high - shutter - speed camera synchronizing 21.
Page 22
... camera had some limitations , such as the shutter speed and the luminance , which could not meet the needs of imaging and controlling a GMAW weld pool . The objective of this paper is to explore a unique solution to the compatibility of ...
... camera had some limitations , such as the shutter speed and the luminance , which could not meet the needs of imaging and controlling a GMAW weld pool . The objective of this paper is to explore a unique solution to the compatibility of ...
Page 23
recording frequency by the high shutter speed camera . A droplet cannot detach during the period of a square pulse because of the low electromagnetic pinch - off force resulted from the acting current . The sine wave current pulse not ...
recording frequency by the high shutter speed camera . A droplet cannot detach during the period of a square pulse because of the low electromagnetic pinch - off force resulted from the acting current . The sine wave current pulse not ...
Page 24
... camera as a vision sensor to detect the vertical coordinate of the droplet along the axis of the wire ( Ref . 13-14 ) . However , there are some issues that still need to be addressed , such as the Slice of a Image Based on Self ...
... camera as a vision sensor to detect the vertical coordinate of the droplet along the axis of the wire ( Ref . 13-14 ) . However , there are some issues that still need to be addressed , such as the Slice of a Image Based on Self ...
Page 26
... camera is externally triggered to capture the image of a weld pool under the active projection of light from a laser source . This is done after a droplet detaches during the period of the base current . A band pass filter that allows ...
... camera is externally triggered to capture the image of a weld pool under the active projection of light from a laser source . This is done after a droplet detaches during the period of the base current . A band pass filter that allows ...
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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.