Failure Analaysis

   Failure as a Design      Criterion

   Fracture Mechanics

 :: 
Tutorial Questions


 :: 
Griffith Equation
- Fracture of Glass Sheet
- Fracture of Maraging Steel
- Relative Magnitudes of Plastic Work and Surface Energy
- Fracture of Perspex Sheet
- Fracture of Cast Iron
- Failure Criteria : Yield Versus Fracture
- Griffith Fracture Criterion
- Fracture of Alumina Grinding Wheel

 :: 
Stress Intensity Factor and Fracture Toughness Testing

 :: 
Characterising Sub-Critical Growth
 -  Fatigue Life Prediction
 -  Stress Corrosion Cracking

 :: 
Theory Resource




Problem 5

This question should take about 10 minutes to complete. It is a simple application of the Griffith equation.
A Class 20 grey cast iron has an average graphite flake size about nine times as long as Class 60 type. The fracture strength of the latter is about 140 MPa. Using arguments that follow the Griffith analysis, what would you predict to be the fracture strength of the Class 20 iron?

Scientific Calculator | RPN Calculator | Graph Plot | Theory
Hint | Solution

TOP

Failure Analysis  -  Fracture Mechanics  -  Failure As A Design Criterion