A metal bar strain measurement is performed as shown in Figure Q3 below. Two strain gauges...

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A metal bar strain measurement is performed as shown in Figure Q3 below. Two strain gauges A and B are glued as shown in Figure Q3. The dimension of the metal bar: Width: w-50 mm, thickness 1-40 mm, length of the bar=120 mm. Gauge Factor GF-1.8, Young Modulus E-5 x 10¹0 Pa. Force F-1000 N is compressive towards the metal bar. Resistance of strain gauge (without load/strain) Ro= 120 s2, Supply voltage for the bridge Vs = 10 Volts i. ii. iii. iv. Determine the corresponding longitudinal and transversal strains on the metal bar. [4 marks] Determine the stressed strain gauge resistance for A and B, when the force is applied. [4 marks] Draw a diagram that show the set-up of the measurement (just draw the metal bar with the strain gauges A and B and the Wheatstone bridge, do not draw the connection). [6 marks] Determine the output voltage of the bridge. Assuming that there are additional two strain gauges C and D with same specifications available, suggest how would you assemble/mount these two strain gauges C and D and calculate the resulting output voltage of the bridge? Note: the set-up must be done such to achieve maximum sensitivity [6 marks] F t W B mmm Figure Q3: Strain measurement on metal bar A metal bar strain measurement is performed as shown in Figure Q3 below. Two strain gauges A and B are glued as shown in Figure Q3. The dimension of the metal bar: Width: w-50 mm, thickness 1-40 mm, length of the bar=120 mm. Gauge Factor GF-1.8, Young Modulus E-5 x 10¹0 Pa. Force F-1000 N is compressive towards the metal bar. Resistance of strain gauge (without load/strain) Ro= 120 s2, Supply voltage for the bridge Vs = 10 Volts i. ii. iii. iv. Determine the corresponding longitudinal and transversal strains on the metal bar. [4 marks] Determine the stressed strain gauge resistance for A and B, when the force is applied. [4 marks] Draw a diagram that show the set-up of the measurement (just draw the metal bar with the strain gauges A and B and the Wheatstone bridge, do not draw the connection). [6 marks] Determine the output voltage of the bridge. Assuming that there are additional two strain gauges C and D with same specifications available, suggest how would you assemble/mount these two strain gauges C and D and calculate the resulting output voltage of the bridge? Note: the set-up must be done such to achieve maximum sensitivity [6 marks] F t W B mmm Figure Q3: Strain measurement on metal bar

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Here are the steps to solve this multiple part problem i To determine the longitudinal and transvers... View the full answer