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Strain gauge rosettes are used when ____________.
- a)the direction of hoop stress is not known
- b)the direction of principal stress is not known
- c)the direction of principal stress is known
- d)the direction of longitudinal stress is not known
Correct answer is option 'B'. Can you explain this answer?
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Strain gauge rosettes are used when ____________.a)the direction of ho...
- wire strain gage can effectively measure strain in only one direction. To determine the three independent components of plane strain, three linearly independent strain measures are needed. i.e., three strain gages positioned in a rosette-like layout.
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Strain gauge rosettes are used when ____________.a)the direction of ho...
Explanation:
When measuring stress on a material, it is important to know the direction of the stress. Strain gauge rosettes are used to measure stress in multiple directions. The rosette consists of three strain gauges arranged at equal angles to each other. When placed on a material, the strain gauges measure the strain in the material in three different directions. This information can then be used to determine the direction of the principal stress.
When to use Strain Gauge Rosettes:
The direction of principal stress is not known. This is the most common application of strain gauge rosettes. When measuring stress in a material, it is not always possible to know the direction of the principal stress. In these cases, a strain gauge rosette can be used to measure the strain in multiple directions and determine the direction of the principal stress.
Other options:
- The direction of hoop stress is not known. Hoop stress refers to the stress that acts tangentially to the circumference of a cylindrical or spherical object. If the direction of hoop stress is not known, a strain gauge rosette may be able to determine it, but this is not the primary use of the rosette.
- The direction of longitudinal stress is not known. Longitudinal stress refers to stress that acts parallel to the length of an object. A strain gauge rosette may be able to measure the strain in multiple directions and determine the direction of the longitudinal stress, but this is not the primary use of the rosette.
When measuring stress on a material, it is important to know the direction of the stress. Strain gauge rosettes are used to measure stress in multiple directions. The rosette consists of three strain gauges arranged at equal angles to each other. When placed on a material, the strain gauges measure the strain in the material in three different directions. This information can then be used to determine the direction of the principal stress.
When to use Strain Gauge Rosettes:
The direction of principal stress is not known. This is the most common application of strain gauge rosettes. When measuring stress in a material, it is not always possible to know the direction of the principal stress. In these cases, a strain gauge rosette can be used to measure the strain in multiple directions and determine the direction of the principal stress.
Other options:
- The direction of hoop stress is not known. Hoop stress refers to the stress that acts tangentially to the circumference of a cylindrical or spherical object. If the direction of hoop stress is not known, a strain gauge rosette may be able to determine it, but this is not the primary use of the rosette.
- The direction of longitudinal stress is not known. Longitudinal stress refers to stress that acts parallel to the length of an object. A strain gauge rosette may be able to measure the strain in multiple directions and determine the direction of the longitudinal stress, but this is not the primary use of the rosette.
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Strain gauge rosettes are used when ____________.a)the direction of hoop stress is not knownb)the direction of principal stress is not knownc)the direction of principal stress is knownd)the direction of longitudinal stress is not knownCorrect answer is option 'B'. Can you explain this answer?
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