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A strain gauge that has a nominal resistance of 3500 and a gauge factor of 1.8...
A strain gauge that has a nominal resistance of 350 ? and a gauge factor of...
A strain gauge that has a nominal resistance of 350 ? and a gauge factor of 1.8 is mounted in an equal-arm bridge, which is balanced at a zero applied strain condition. The gauge is mounted on a 11.8 1-cm aluminum rod, with E 70 GPa. The gauge senses axial strain. The bridge output is 1 mV for a bridge input of 5 V. What is the applied load, assuming the rod is in uniaxial tension?
Problem 4. An axial strain gauge and a transverse strain gauge are mounted to the top...
Problem 4. An axial strain gauge and a transverse strain gauge are mounted to the top surface of a steel beam that experiences a uniaxial stress of 2222 psi. The gauges are connected to arms1 and 2 of a Wheatstone bridge. With a purely axial load applied, determine the bridge constant for the measurement system. If SE 250 uV and E, -10 V, estimate the average gauge factor of the strain gauges. For this material, Poisson's ratio is 0.3 and...
A 120 ? strain gauge with a gauge factor of 2 is mounted on a beam...
A 120 Ω strain gauge with a gauge factor of 2 is mounted on a beam and connected in a Wheatstone bridge as shown in Figure Q1a. The bridge is powered by a 12 V DC supply in series with a 510 Ω resistance. The beam is subject to a tensile force, which produces an axial strain of 940 microstrain measured by the strain gauge .a) Under no strain, calculate the current in the strain gauge and the power dissipated by the...
A strain gauge has a normal resistance of 360Ω and a gauge factor of 2.01. It...
A strain gauge has a normal resistance of 360Ω and a gauge factor of 2.01. It is used in a quarter bridge with the other fixed resistors being 360s2 and with a supply voltage of 3.0V. The bridge is initially balanced and then the gauge is heated to 300°C without any stress applied. What will be the bridge's linearised output Volin mV) if at 300°C, the apparent strain is 75strain and the S variation is +1.025%? (Answer must match to...
The strain gauge forms one arm while three fixed value resistors (R1, R2 and R3) mounted on the other arms. The bridge is in balance when the strain gauge resistance is of its nominal value. The strain gauge has a nominal length of 5.2 cm and gauge factor
(a)State two possible errors of the measurement.precision resistance tolerance(b)Determine the nominal resistance of the strain gauge.(c)Determine the change in resistance (DR) when the force is applied to the gauge.(d)Determine the output voltage Vo and state whether the potential at node A is higher or lower than node B.(e)Determine the resultant length of the strain gauge.(f)Suggest one method to improve the accuracy and one method to improve the sensitivity of the bridge.
3. A resistance strain gauge with R-120 ohm and a gauge factor of 2 is placed...
3. A resistance strain gauge with R-120 ohm and a gauge factor of 2 is placed in an equal-arm Wheatstone bridge in which all the resistances are equal to 120 ohm. If the maximum gauge current is to be 0.05A, what is the maximum allowable bridge excitation voltage?
3. Two different types of strain gauges with a nominal resistance of 120 2 are both...
3. Two different types of strain gauges with a nominal resistance of 120 2 are both used to measure an axial strain in Figure 3. They are connected to a Wheatstone bridge (the lead wire effect is negligible) at R1 and R3 R3 is a nickel wire strain gauge with a gauge factor -12.1 and R1 is a nicrome wire strain gauge with a gauge factor 2.1. The bridge has a supply voltage of 4.5V and two fixed resistors R2...
Problem #1 (35 pts.) A solid 5 cm by 5 cm square aluminum rod, with a...
Problem #1 (35 pts.) A solid 5 cm by 5 cm square aluminum rod, with a 70 GPa modulus of elasticity, is stretched by an unknown axial load. The initial rod length is 1 m, and its final length (after applying the axial load) is 1.0005 m. Assume that a strain gauge (with a gauge factor of 2.2) is firmly affixed to the rod, its active axis aligned with the length of the rod. You may assume the strain gauge...
1.) A aluminum cylinder with modulus of elasticity 69GPa and a diameter of 15mm is loaded...
1.) A aluminum cylinder with modulus of elasticity 69GPa and a diameter of 15mm is loaded in tension with an axial load of 30kN. If the strain gauge factor is 2.06 and the nominal resistance of the strain gauge is 1200 what is the change in resistance of the strain gauge from the unloaded state to the loaded state? a) b) If the excitation voltage is VEx 10V and all other resistors in the Wheatstone Bridge are 1200, what is...
4. To precisely measure the change in the electrical resistance of a strain gauge, we commonly...
4. To precisely measure the change in the electrical resistance of a strain gauge, we commonly use the Wheatstone bridge. Consider the Wheatstone bridge shown below Derive the expression for Vo in terms of VEx, RI, R2, R3, and R4. Under what condition is the bridge balanced, that is, Vo 0 a. b. Let Resistor 2 represent a strain gauge, whose resistance changes from R2 to R2+ dR2. The resistances of all the other resistors stay fixed. This is called...
A strain gauge that has a nominal resistance of 350 ? and a gauge factor of 1.8 is mounted in an equal-arm bridge, which is balanced at a zero applied strain condition. The gauge is mounted on a 11.8 1-cm aluminum rod, with E 70 GPa. The gauge senses axial strain. The bridge output is 1 mV for a bridge input of 5 V. What is the applied load, assuming the rod is in uniaxial tension?
Problem 4. An axial strain gauge and a transverse strain gauge are mounted to the top surface of a steel beam that experiences a uniaxial stress of 2222 psi. The gauges are connected to arms1 and 2 of a Wheatstone bridge. With a purely axial load applied, determine the bridge constant for the measurement system. If SE 250 uV and E, -10 V, estimate the average gauge factor of the strain gauges. For this material, Poisson's ratio is 0.3 and...
A 120 Ω strain gauge with a gauge factor of 2 is mounted on a beam and connected in a Wheatstone bridge as shown in Figure Q1a. The bridge is powered by a 12 V DC supply in series with a 510 Ω resistance. The beam is subject to a tensile force, which produces an axial strain of 940 microstrain measured by the strain gauge .a) Under no strain, calculate the current in the strain gauge and the power dissipated by the...
A strain gauge has a normal resistance of 360Ω and a gauge factor of 2.01. It is used in a quarter bridge with the other fixed resistors being 360s2 and with a supply voltage of 3.0V. The bridge is initially balanced and then the gauge is heated to 300°C without any stress applied. What will be the bridge's linearised output Volin mV) if at 300°C, the apparent strain is 75strain and the S variation is +1.025%? (Answer must match to...
3. A resistance strain gauge with R-120 ohm and a gauge factor of 2 is placed in an equal-arm Wheatstone bridge in which all the resistances are equal to 120 ohm. If the maximum gauge current is to be 0.05A, what is the maximum allowable bridge excitation voltage?
3. Two different types of strain gauges with a nominal resistance of 120 2 are both used to measure an axial strain in Figure 3. They are connected to a Wheatstone bridge (the lead wire effect is negligible) at R1 and R3 R3 is a nickel wire strain gauge with a gauge factor -12.1 and R1 is a nicrome wire strain gauge with a gauge factor 2.1. The bridge has a supply voltage of 4.5V and two fixed resistors R2...
Problem #1 (35 pts.) A solid 5 cm by 5 cm square aluminum rod, with a 70 GPa modulus of elasticity, is stretched by an unknown axial load. The initial rod length is 1 m, and its final length (after applying the axial load) is 1.0005 m. Assume that a strain gauge (with a gauge factor of 2.2) is firmly affixed to the rod, its active axis aligned with the length of the rod. You may assume the strain gauge...
1.) A aluminum cylinder with modulus of elasticity 69GPa and a diameter of 15mm is loaded in tension with an axial load of 30kN. If the strain gauge factor is 2.06 and the nominal resistance of the strain gauge is 1200 what is the change in resistance of the strain gauge from the unloaded state to the loaded state? a) b) If the excitation voltage is VEx 10V and all other resistors in the Wheatstone Bridge are 1200, what is...
4. To precisely measure the change in the electrical resistance of a strain gauge, we commonly use the Wheatstone bridge. Consider the Wheatstone bridge shown below Derive the expression for Vo in terms of VEx, RI, R2, R3, and R4. Under what condition is the bridge balanced, that is, Vo 0 a. b. Let Resistor 2 represent a strain gauge, whose resistance changes from R2 to R2+ dR2. The resistances of all the other resistors stay fixed. This is called...
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