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Which one of the following is the definition of ultimate tensile strength (UTS) obtained from a stressstrain test on a metal specimen?
- a)Stress value where the stress-strain curve transitions from elastic to plastic behavior
- b)The maximum load attained divided by the original cross-sectional area
- c)The maximum load attained divided by the corresponding instantaneous cross-sectional area
- d)Stress where the specimen fractures
Correct answer is option 'B'. Can you explain this answer?
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Which one of the following is the definition of ultimate tensile stren...
Ultimate Tensile Strength (UTS) Definition
The ultimate tensile strength (UTS) is defined as the maximum load attained during a stress-strain test on a metal specimen divided by its original cross-sectional area. It is a measure of the material's ability to withstand tensile forces without breaking or fracturing.
Explanation
A stress-strain test is conducted on a metal specimen to determine its mechanical properties, including its behavior under tension. The test involves applying a gradually increasing tensile load to the specimen and measuring the resulting deformation. The stress-strain curve obtained from this test provides valuable information about the material's strength and ductility.
Stress-Strain Curve
The stress-strain curve is a graphical representation of the relationship between stress and strain in a material. It depicts how the material responds to applied forces and undergoes deformation. The curve typically consists of several distinct regions, each characterized by different mechanical behaviors.
Elastic and Plastic Behavior
The stress-strain curve starts with a linear elastic region, where the material deforms elastically under the applied load. In this region, the stress is directly proportional to the strain, and the material returns to its original shape once the load is removed.
As the load continues to increase, the stress-strain curve transitions from the elastic region to the plastic region. In the plastic region, the material undergoes permanent deformation even after the load is removed. This is due to the movement of dislocations within the material's crystal structure.
Ultimate Tensile Strength
The ultimate tensile strength is obtained at the peak of the stress-strain curve, where the material experiences its maximum load before fracture. It is calculated by dividing the maximum load attained during the test by the original cross-sectional area of the specimen.
By dividing the load by the cross-sectional area, the ultimate tensile strength provides a measure of the material's ability to withstand tension forces without breaking. It is an important parameter for engineers and designers as it helps determine the maximum load a material can withstand before failure.
In summary, the ultimate tensile strength obtained from a stress-strain test on a metal specimen is defined as the maximum load divided by the original cross-sectional area. It represents the material's ability to resist tensile forces without fracturing and is an essential property in engineering applications.
The ultimate tensile strength (UTS) is defined as the maximum load attained during a stress-strain test on a metal specimen divided by its original cross-sectional area. It is a measure of the material's ability to withstand tensile forces without breaking or fracturing.
Explanation
A stress-strain test is conducted on a metal specimen to determine its mechanical properties, including its behavior under tension. The test involves applying a gradually increasing tensile load to the specimen and measuring the resulting deformation. The stress-strain curve obtained from this test provides valuable information about the material's strength and ductility.
Stress-Strain Curve
The stress-strain curve is a graphical representation of the relationship between stress and strain in a material. It depicts how the material responds to applied forces and undergoes deformation. The curve typically consists of several distinct regions, each characterized by different mechanical behaviors.
Elastic and Plastic Behavior
The stress-strain curve starts with a linear elastic region, where the material deforms elastically under the applied load. In this region, the stress is directly proportional to the strain, and the material returns to its original shape once the load is removed.
As the load continues to increase, the stress-strain curve transitions from the elastic region to the plastic region. In the plastic region, the material undergoes permanent deformation even after the load is removed. This is due to the movement of dislocations within the material's crystal structure.
Ultimate Tensile Strength
The ultimate tensile strength is obtained at the peak of the stress-strain curve, where the material experiences its maximum load before fracture. It is calculated by dividing the maximum load attained during the test by the original cross-sectional area of the specimen.
By dividing the load by the cross-sectional area, the ultimate tensile strength provides a measure of the material's ability to withstand tension forces without breaking. It is an important parameter for engineers and designers as it helps determine the maximum load a material can withstand before failure.
In summary, the ultimate tensile strength obtained from a stress-strain test on a metal specimen is defined as the maximum load divided by the original cross-sectional area. It represents the material's ability to resist tensile forces without fracturing and is an essential property in engineering applications.
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Community Answer
Which one of the following is the definition of ultimate tensile stren...
The definition of ultimate tensile strength (UTS) obtained from a stress-strain test on a metal specimen is the maximum load attained divided by the original cross-sectional area.
i.e.
Where, σult= ultimate tensile strength,
Pmax = maximum load obtained in a tensile test,
A0 = original cross-sectional area before load applied
Hence, the correct option is (B).
i.e.
Where, σult= ultimate tensile strength,
Pmax = maximum load obtained in a tensile test,
A0 = original cross-sectional area before load applied
Hence, the correct option is (B).
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Which one of the following is the definition of ultimate tensile strength (UTS) obtained from a stressstrain test on a metal specimen?a)Stress value where the stress-strain curve transitions from elastic to plastic behaviorb)The maximum load attained divided by the original cross-sectional areac)The maximum load attained divided by the corresponding instantaneous cross-sectional aread)Stress where the specimen fracturesCorrect answer is option 'B'. Can you explain this answer?
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Which one of the following is the definition of ultimate tensile strength (UTS) obtained from a stressstrain test on a metal specimen?a)Stress value where the stress-strain curve transitions from elastic to plastic behaviorb)The maximum load attained divided by the original cross-sectional areac)The maximum load attained divided by the corresponding instantaneous cross-sectional aread)Stress where the specimen fracturesCorrect answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Which one of the following is the definition of ultimate tensile strength (UTS) obtained from a stressstrain test on a metal specimen?a)Stress value where the stress-strain curve transitions from elastic to plastic behaviorb)The maximum load attained divided by the original cross-sectional areac)The maximum load attained divided by the corresponding instantaneous cross-sectional aread)Stress where the specimen fracturesCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which one of the following is the definition of ultimate tensile strength (UTS) obtained from a stressstrain test on a metal specimen?a)Stress value where the stress-strain curve transitions from elastic to plastic behaviorb)The maximum load attained divided by the original cross-sectional areac)The maximum load attained divided by the corresponding instantaneous cross-sectional aread)Stress where the specimen fracturesCorrect answer is option 'B'. Can you explain this answer?.
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