D.H. Lammlein PhD Dissertation - Vanderbilt University
D.H. Lammlein PhD Dissertation - Vanderbilt University
D.H. Lammlein PhD Dissertation - Vanderbilt University
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Figure 157: A thermal camera image from thermal video taken during the experiment<br />
showing the region of interest on the tool shank. The emissivity of the tool shank was<br />
determined by observing the shank with the camera at several temperatures when the<br />
temperature of the shank was known. ............................................................................. 175<br />
Figure 158: Average tool shank temperature obtained via thermal camera over the steady<br />
state portion of welds made using the narrow probe tool. .............................................. 176<br />
Figure 159: Average tool shank temperature obtained via thermal camera over the steady<br />
state portion of welds made using the wide probe tool. .................................................. 177<br />
Figure 160: A chart showing the tool shank thermal history over the course of a selected<br />
weld from the experiment. This data was typical of weld thermal data taken during the<br />
experiment in that temperature continued to rise throughout the weld. ......................... 178<br />
Figure 161: Computer model geometry created in the Gambit preprocessor showing the<br />
inlet, outlet, and model zones. ........................................................................................ 180<br />
Figure 162: A closeup view of mesh refinement on the tool face. The featured shoulder<br />
and threaded probe can be seen. The mesh was finest at the interface. ......................... 181<br />
Figure 163: Modeled temperature contour (C) for the narrow 4.8mm(3/16”) diameter<br />
probe tool case (Iso view). .............................................................................................. 186<br />
Figure 164: Modeled temperature contour (C) for the narrow probe tool case<br />
(longitudinal view). ......................................................................................................... 187<br />
Figure 165: Modeled temperature contour (C) for the narrow probe tool case (front lateral<br />
view looking from the inlet). .......................................................................................... 188<br />
Figure 166: Modeled temperature contour (C) for the narrow probe tool case (top view of<br />
a slice taken at the middle of the probe). ........................................................................ 188<br />
Figure 167: Modeled temperature contour (C) for the wide 0.236”(6mm) diameter probe<br />
tool case (Iso view). ........................................................................................................ 189<br />
Figure 168: Modeled temperature contour (C) for the wide probe tool case (longitudinal<br />
view). .............................................................................................................................. 190<br />
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