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Force and Torque
Measurement
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Axial Column - 2 Gages In Opposite
Arms
The physical configuration of the gages is the same
as that used for the
bending half bridge
. But because the two active gages are now
electrically connected in opposite arms of the
Wheatstone bridge, this configuration cancels bending
strains with equal magnitudes and opposite signs. The
magnitude of the bridge output resulting from axial
loads is relatively high (because of the additive
effect) but is nonlinear (approximately 0.1% per each
1000 microstrain produced in the column by axial
loads). And because any thermal output from the
active gages is additive for this configuration,
temperature compensation is the poorest of any
configuration shown here.
Page 6 of 10
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