Problems: Stress (ksi) 53.2 1. Determine the ductility (u) of the material based on the stress- strain diagram (problem S5.1). 43.6 37.1 0.0013 0.0063 0.163 0.247 Strain (in/in)
Problems: Stress (ksi) 53.2 1. Determine the ductility (u) of the material based on the stress- strain diagram (problem S5.1). 43.6 37.1 0.0013 0.0063 0.163 0.247 Strain (in/in)
Materials Science And Engineering Properties
1st Edition
ISBN:9781111988609
Author:Charles Gilmore
Publisher:Charles Gilmore
Chapter9: Time, Temperature, And Mechanical Properties
Section: Chapter Questions
Problem 9.3P
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Transcribed Image Text:**Problems:**
1. Determine the ductility (μ) of the material based on the stress-strain diagram (problem S5.1).
**Explanation of the Stress-Strain Diagram:**
- **Axes:**
- The horizontal axis represents Strain, measured in inches per inch (in/in).
- The vertical axis represents Stress, measured in kilopounds per square inch (ksi).
- **Key Points on the Graph:**
- The curve begins at the origin (0, 0) and initially increases steeply.
- It shows initial linear behavior, indicating the elastic region, up to around 0.0013 strain.
- The curve then levels out, with a small plateau indicating yielding before it begins to rise again, reaching a peak stress value.
- The peak stress value is approximately 53.2 ksi.
- The strain corresponding to this peak stress is about 0.247.
- **Purpose:**
- The diagram illustrates how the material behaves under tensile stress, highlighting its ability to deform (ductility) before breaking.
The ductility can be inferred by analyzing the amount of plastic deformation (area under the curve after yielding) the material undergoes before failure.
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