9.7 The unbonded strain gauge accelerometer of Figure 8.20 and Section 9.1.2 has a natural fre- quency of 175 Hz and an input range of 0 to 5g. Given that the strain due to prestressing is twice the maximum acceleration-induced strain, use the strain gauge data given below to calculate the range of the bridge output voltage. = 120 2 = 2.1 = 50 mA Length at zero acceleration = 2.3 cm Resistance Gauge factor Maximum current Figure 8.20: the Unbonded strain gauge accelerometer.

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9.7
The unbonded strain gauge accelerometer of Figure 8.20 and Section 9.1.2 has a natural fre-
quency of 175 Hz and an input range of 0 to 5g. Given that the strain due to prestressing
is twice the maximum acceleration-induced strain, use the strain gauge data given below to
calculate the range of the bridge output voltage.
Resistance
= 120 2
= 2.1
Gauge factor
Maximum current
Length at zero acceleration = 2.3 cm
= 50 mA
Figure 8.20: the Unbonded strain
gauge accelerometer.
eo -e
eo te
m
4
3
eo
eo +e
x = 0
2.
Transcribed Image Text:9.7 The unbonded strain gauge accelerometer of Figure 8.20 and Section 9.1.2 has a natural fre- quency of 175 Hz and an input range of 0 to 5g. Given that the strain due to prestressing is twice the maximum acceleration-induced strain, use the strain gauge data given below to calculate the range of the bridge output voltage. Resistance = 120 2 = 2.1 Gauge factor Maximum current Length at zero acceleration = 2.3 cm = 50 mA Figure 8.20: the Unbonded strain gauge accelerometer. eo -e eo te m 4 3 eo eo +e x = 0 2.
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