Homework Answers
(A) electrical resistance
Strain guage depends on the electrical conductance and depends on its shape and size of the conductors also alters its length and cross sectional area which eventually effects it's resistance.
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Strain gage is a device that senses the strain of the structure. The property of the...
Question 4 0.5 points Save Answer Strain gage is a device that senses the strain of...
Question 4 0.5 points Save Answer Strain gage is a device that senses the strain of the structure. The property of the strain gage that is used to correlate with the strain to be measured is ductility electrical resistance yield strength Odensity Question 5 0.5 points Save Answer Shown in the figure below is a solid cylinder. The x-axis is along the longitudinal direction. The angle is measured with respect to the x-axis, positive if counterclockwise, t.e. towards the y-axis...
A rosette strain gage is an electromechanical device that can measure relative surface elongations in three...
A rosette strain gage is an electromechanical device that can measure relative surface elongations in three directions. Bonding such a device to the surface of a structure allows determination of elongational strains in particular directions. A schematic of one such gage is shown in the following figure, and the output of the device will provide data on the strains along the gage arms a, b, and c. During one application, it is found that ea = 0.001, ep = 0.002,...
1. A strain gage rosette is an electromechanical device that can measure relative surface elongation on...
1. A strain gage rosette is an electromechanical device that can measure relative surface elongation on three directions. Bonding such a device to the surface of a structure allows determination of normal strain along the gage arms. Such a rosette is mounted on the surface of a stress-free elastic solid as shown at the right. Upon loading, the three gage readings are 30 a30 Ea-300 x 10-6, ε,-400 x 10-6, ε.-100 x 10-6 Assuming the material is steel with E-207...
1. The following is a one-layer truss structure fabricated from aluminum tubing with outside diameter and...
1. The following is a one-layer truss structure fabricated from aluminum tubing with outside diameter and wall thickness as 0.4 inch and 0.05 inch, respectively. The Young's modulus and Poisson's ratio for aluminum are E= 10 x 10°psi, v=0.33, respectively. The applied load P is 60 Ib. Please answer = 60° B Ra all Cled URb The internal force for member AC is: -30 lb 34.6 lb 30 lb -34.6 lb Question 2 1 points Save Answer 1. The following...
Figure (a) shows the stress strain relations for two different materials, A and B. Between A...
Figure (a) shows the stress strain relations for two different materials, A and B. Between A and B, which one has higher strength? stress B strain Figure (a) O A. Material A OB. Material B Figure (a) shows the stress strain relations for two different materials, A and B. Figure (b) is a schematic of the catastrophic failure of a Liberty ship. Between A and B. which material could have been used in construction of the ship and caused this...
9.14. A new experimental strain gage is mounted on a 0.25 inch diameter steel bar in...
9.14. A new experimental strain gage is mounted on a 0.25 inch diameter steel bar in the axial direction. The gage has a measured resistance of 120 Ω, and when the bar is loaded with 500 Ib in tension, the gage resistance increases by 0.01 2. What is the gage factor of the gage?
3. In a stress–strain curve from a tension test, the specimen begins to neck and the...
3. In a stress–strain curve from a tension test, the specimen begins to neck and the elongation between the gage marks is no longer uniform once the load is beyond . a) yield strength b) proportional limit c) ultimate tensile strength d) Fracture stress 4. The two parameters that can define ductility are _____ and _______. a) elongation b) engineering strain c) reduction of area c) poisson’s ratio
P5-Consider a standard strain-gage bridge with R, as the only active gage and R3-R4. Obtain an...
P5-Consider a standard strain-gage bridge with R, as the only active gage and R3-R4. Obtain an expression for R, in terms of R2. vo, and vref. Show that when R1-R2. we get v 0 -a balanced bridge- as required. Note that the equation for R. assuming that vo is measured using a high-impedance voltmeter, can be used to detect large resistance changes in R1. Now suppose that the active gage R1 is connected to the bridge using a long, twisted...
N7. At a critical location of a composite structure, strains are measured with three strain gages...
N7. At a critical location of a composite structure, strains are measured with three strain gages glued to the surface of the composite. The orientations of the strain gages are 0 , 120 and 240 . Each strain gage measures only the strain in the direction of the gage. The strains from the strain gages are 0 = 1.0 % 120 = 0.2 % 240 = - 0.6 % The layup at this location is (+45 ,-45 )2s. The strains...
4. For each of the following indicate what parameter, property or process is defined a) The...
4. For each of the following indicate what parameter, property or process is defined a) The stress at which nonuniform permanent deformation begins b) The materials constant used to calculate the amount of elastic strain in a material at a given stress level c) The type (name) of the imperfection in a metal that is responsible for determining both the strength and the ductility of the material
Question 4 0.5 points Save Answer Strain gage is a device that senses the strain of the structure. The property of the strain gage that is used to correlate with the strain to be measured is ductility electrical resistance yield strength Odensity Question 5 0.5 points Save Answer Shown in the figure below is a solid cylinder. The x-axis is along the longitudinal direction. The angle is measured with respect to the x-axis, positive if counterclockwise, t.e. towards the y-axis...
A rosette strain gage is an electromechanical device that can measure relative surface elongations in three directions. Bonding such a device to the surface of a structure allows determination of elongational strains in particular directions. A schematic of one such gage is shown in the following figure, and the output of the device will provide data on the strains along the gage arms a, b, and c. During one application, it is found that ea = 0.001, ep = 0.002,...
1. A strain gage rosette is an electromechanical device that can measure relative surface elongation on three directions. Bonding such a device to the surface of a structure allows determination of normal strain along the gage arms. Such a rosette is mounted on the surface of a stress-free elastic solid as shown at the right. Upon loading, the three gage readings are 30 a30 Ea-300 x 10-6, ε,-400 x 10-6, ε.-100 x 10-6 Assuming the material is steel with E-207...
1. The following is a one-layer truss structure fabricated from aluminum tubing with outside diameter and wall thickness as 0.4 inch and 0.05 inch, respectively. The Young's modulus and Poisson's ratio for aluminum are E= 10 x 10°psi, v=0.33, respectively. The applied load P is 60 Ib. Please answer = 60° B Ra all Cled URb The internal force for member AC is: -30 lb 34.6 lb 30 lb -34.6 lb Question 2 1 points Save Answer 1. The following...
Figure (a) shows the stress strain relations for two different materials, A and B. Between A and B, which one has higher strength? stress B strain Figure (a) O A. Material A OB. Material B Figure (a) shows the stress strain relations for two different materials, A and B. Figure (b) is a schematic of the catastrophic failure of a Liberty ship. Between A and B. which material could have been used in construction of the ship and caused this...
9.14. A new experimental strain gage is mounted on a 0.25 inch diameter steel bar in the axial direction. The gage has a measured resistance of 120 Ω, and when the bar is loaded with 500 Ib in tension, the gage resistance increases by 0.01 2. What is the gage factor of the gage?
P5-Consider a standard strain-gage bridge with R, as the only active gage and R3-R4. Obtain an expression for R, in terms of R2. vo, and vref. Show that when R1-R2. we get v 0 -a balanced bridge- as required. Note that the equation for R. assuming that vo is measured using a high-impedance voltmeter, can be used to detect large resistance changes in R1. Now suppose that the active gage R1 is connected to the bridge using a long, twisted...
4. For each of the following indicate what parameter, property or process is defined a) The stress at which nonuniform permanent deformation begins b) The materials constant used to calculate the amount of elastic strain in a material at a given stress level c) The type (name) of the imperfection in a metal that is responsible for determining both the strength and the ductility of the material
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