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For the materials which do not exhibit a well-defined yield points, the yield strength is defined as the stress corresponding to a permanent set of how much percentage of gauge length?
- a)0.1
- b)0.2
- c)0.3
- d)0.4
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
For the materials which do not exhibit a well-defined yield points, th...
Explanation: Generally for all the practical purpose, an offset of 0.2% of gauge length is considered.
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For the materials which do not exhibit a well-defined yield points, th...
Definition of Yield Strength
Yield strength is defined as the amount of stress that a material can withstand before it starts to deform plastically or permanent deformation occurs. In other words, it is the stress level at which the material undergoes a transition from elastic deformation to plastic deformation.
Yield Point
Some materials exhibit a distinct yield point, which is the stress level at which a sudden increase in strain occurs without any increase in stress. This phenomenon is known as yielding, and the yield point is defined as the stress level at which yielding occurs.
Yield Strength for Materials without a Distinct Yield Point
However, some materials do not exhibit a well-defined yield point. In such cases, the yield strength is defined as the stress level corresponding to a permanent set of a certain percentage of the gauge length. The permanent set is the amount of deformation that remains after the stress is removed.
Percentage of Gauge Length
The percentage of gauge length used to define the yield strength depends on the material being tested. For most materials, the yield strength is defined as the stress level corresponding to a permanent set of 0.2% of the gauge length. This is known as the 0.2% offset yield strength.
Other Materials
For some materials, such as aluminum alloys, the yield strength is defined as the stress level corresponding to a permanent set of 0.1% of the gauge length. For very ductile materials, such as gold or copper, the yield strength may be defined as the stress level corresponding to a permanent set of 0.5% of the gauge length.
Conclusion
In conclusion, the yield strength of a material is the stress level at which it undergoes permanent deformation. For materials without a well-defined yield point, the yield strength is defined as the stress level corresponding to a permanent set of a certain percentage of the gauge length. For most materials, this percentage is 0.2%.
Yield strength is defined as the amount of stress that a material can withstand before it starts to deform plastically or permanent deformation occurs. In other words, it is the stress level at which the material undergoes a transition from elastic deformation to plastic deformation.
Yield Point
Some materials exhibit a distinct yield point, which is the stress level at which a sudden increase in strain occurs without any increase in stress. This phenomenon is known as yielding, and the yield point is defined as the stress level at which yielding occurs.
Yield Strength for Materials without a Distinct Yield Point
However, some materials do not exhibit a well-defined yield point. In such cases, the yield strength is defined as the stress level corresponding to a permanent set of a certain percentage of the gauge length. The permanent set is the amount of deformation that remains after the stress is removed.
Percentage of Gauge Length
The percentage of gauge length used to define the yield strength depends on the material being tested. For most materials, the yield strength is defined as the stress level corresponding to a permanent set of 0.2% of the gauge length. This is known as the 0.2% offset yield strength.
Other Materials
For some materials, such as aluminum alloys, the yield strength is defined as the stress level corresponding to a permanent set of 0.1% of the gauge length. For very ductile materials, such as gold or copper, the yield strength may be defined as the stress level corresponding to a permanent set of 0.5% of the gauge length.
Conclusion
In conclusion, the yield strength of a material is the stress level at which it undergoes permanent deformation. For materials without a well-defined yield point, the yield strength is defined as the stress level corresponding to a permanent set of a certain percentage of the gauge length. For most materials, this percentage is 0.2%.
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For the materials which do not exhibit a well-defined yield points, th...
For engg materials ...we usually take Strain = 0.2% of length(i.e.,0.002)....and that point is called "Proof stress" or "Offset yield stress"
I am not sure about this reason... once verify it
Thank you
I am not sure about this reason... once verify it
Thank you
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For the materials which do not exhibit a well-defined yield points, the yield strength is defined as the stress corresponding to a permanent set of how much percentage of gauge length?a)0.1b)0.2c)0.3d)0.4Correct answer is option 'B'. Can you explain this answer?
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