Calculating percent elongation and determining ductility?

In summary, the calculation for the specimen's ductility in terms of percent elongation to break is ((202-165) / 165) * 100 = 22.42%. This calculation covers both the ductility and percent elongation.
  • #1
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Homework Statement


A specimen with an original length of 165 mm is subjected to a tensile load of 4500 N until it breaks. It’s final length is 202 mm. Calculate the specimen’s ductility in terms of percent elongation to break.

Homework Equations


((Lf - Lo) / Lo) * 100 = %EL

The Attempt at a Solution


( (202-165) / 165) * 100 = 22.42 %

I feel like I am completely wrong or still missing something. Is this percentage the specimen's ductility and the percent elongation?

Thank you,
Douglas
 
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  • #2
It seems to me you did this correctly.
 
  • #3
Thank you, sir.

I keep thinking of ductility as a separate calculation but it turns out this calculation covered it.
 

1. What is percent elongation and why is it important?

Percent elongation is a measure of a material's ability to stretch or deform without breaking. It is important because it indicates the ductility or malleability of a material, which is crucial for understanding its mechanical properties and potential uses.

2. How is percent elongation calculated?

Percent elongation is calculated by measuring the change in length of a material after it has been subjected to a tensile force, and then dividing that change by the original length and multiplying by 100. The formula is (final length - initial length) / initial length x 100.

3. What is the difference between percentage elongation and percentage reduction in area?

Percentage elongation measures the increase in length of a material after being stretched, while percentage reduction in area measures the decrease in cross-sectional area of a material after being subjected to a tensile force. Both are measures of a material's ductility, but they focus on different aspects of deformation.

4. What factors can affect the percent elongation of a material?

The percent elongation of a material can be affected by its composition, microstructure, and processing methods. Materials with a higher percentage of ductile components will generally have a higher percent elongation. The presence of impurities or defects can also affect the material's ductility and therefore its percent elongation.

5. How is ductility related to the percent elongation of a material?

Ductility and percent elongation are closely related, as ductility is the measure of a material's ability to deform without breaking. A material with a high percent elongation will typically have a high ductility, meaning it can undergo large amounts of deformation before fracturing. However, it is important to note that percent elongation is just one measure of ductility and should be considered alongside other factors such as toughness and resilience.

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