Question

Given the following information, estimate the modulus of elasticity of the beam material and the uncertainty in your estimate. You must use propagation of uncertainty (partials or relative uncertainty equation) to estimate the uncertainty. Note: the beam is fixed on the left hand side.
Distance from load to center of strain gauge: 9.6 â 0.2 cm
Applied load: 16.2 + 0.25 N
Nominal resistance of gauge and resistors: 350 Ohms
Input Voltage: 5V + 0.0
Beam width: 2.5 + 0.05 cm
Beam thickness: 0.5 + 0.05 cm
Amplification gain (from AD623): 834 + 0.0
Measured Voltage (assume no bias): 0.481V = 0.05V
Gage factor: 2.1 + 0.0 IR4 1

Answer 1

Answer:

Given the following information, estimate the modulus of elasticity of the beam material and the uncertainty in your estimate. You must use propagation of uncertainty (partials or relative uncertainty equation) to estimate the uncertainty. Note: the beam is fixed on the left hand side.

Distance from load to center of strain gauge: 9.6 â 0.2 cm

Applied load: 16.2 + 0.25 N

Nominal resistance of gauge and resistors: 350 Ohms

Input Voltage: 5V + 0.0

Beam width: 2.5 + 0.05 cm

Beam thickness: 0.5 + 0.05