Assessment of the Automation Algorithm for TDR Bridge - Ohio ...
Assessment of the Automation Algorithm for TDR Bridge - Ohio ...
Assessment of the Automation Algorithm for TDR Bridge - Ohio ...
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5.1 Introduction<br />
• <strong>TDR</strong> Measurements in Highly Conductive Materials<br />
remote diode shortening<br />
coated <strong>TDR</strong> probes<br />
• Sampling Area <strong>of</strong> Coated <strong>TDR</strong> Probe and <strong>the</strong> Effective<br />
Measured Dielectric Constant<br />
The sample volume is <strong>the</strong> region <strong>of</strong> <strong>the</strong> porous medium that contributes to <strong>the</strong><br />
total probe response: changes in <strong>the</strong> properties <strong>of</strong> <strong>the</strong> porous medium outside<br />
this volume do not have significant influence on <strong>the</strong> response <strong>of</strong> <strong>the</strong> instrument.<br />
Ka e ∫∫ Ka<br />
Ω<br />
( x,<br />
y)<br />
w(<br />
x,<br />
y)<br />
, = dA<br />
( ) ( ) ( ) ⎟ ⎛<br />
⎞<br />
2<br />
2<br />
w x,<br />
y = | E x,<br />
y | / ⎜<br />
∫∫|<br />
Eo<br />
x,<br />
y | dA<br />
⎝ Ω<br />
⎠<br />
f<br />
∫∫<br />
Ω<br />
∑<br />
100×<br />
wi<br />
Ai<br />
wh =<br />
w dA<br />
i<br />
Ferré et al. (1998)<br />
76
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