ME364 MET KS Ch2

# ME364 MET KS Ch2 - Chapter 2 Mechanical Behavior Testing...

This preview shows pages 1–12. Sign up to view the full content.

Chapter 2 Mechanical Behavior, Testing, and Manufacturing Properties of Materials

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Relative Mechanical Properties of Materials
Tensile-test Specimen and Machine Figure 2.1 (a) A standard tensile-test specimen before and after pulling, showing original and final gage lengths. (b) A tensile-test sequence showing different stages in the elongation of the specimen. Engineering Stess, σ = P A o Engineering Strain, e = l l o l o Modulus of Elasticity, E = e True stress, = P A True strain, ε =ln l l o Poisson's Ratio : Strain al Longitudin Strain Lateral = ν

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
σ P
σ P

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Tension Test Stress-strain Curve Figure 2.2 A typical stress-strain curve obtained from a tension test, showing various features
Measures of Ductility DUCTILITY: Extend of plastic deformation that the material undergoes before fracture. Two common measures of ductility: 100 ) ( Elongation Total × = o o f l l l 100 ) ( Area of Reduction × = o f o A A A

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Mechanical Properties of Materials

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Elongation vs. Tensile-reduction Figure 2.4 Approximate relationship between elongation and tensile reduction of area for various groups of metals
Tension and Stress Curves Figure 2.5 (a) Load elongation curve in tension testing of a stainless steel specimen. (b) Engineering stress-engineering strain curve, drawn from the data in Fig. 2.5a. (c) True stress-true strain curve, drawn from the data in Fig. 2.5b. Note that this curve has a positive slope, indicating that the material is becoming stringer as it is strained. (d)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 31

ME364 MET KS Ch2 - Chapter 2 Mechanical Behavior Testing...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online