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Fatigue of Materials and Structures


Here are links of PPT PowerPoint Presentations, pdf PDF documents and word Word documents.

Topics

Mechanical and microstructural aspects of nucleation and growth of cracks under cyclic loading conditions, notch effects, cumulative damage, multiaxial loading and fatigue crack propagation

Topics outline:

  • Introduction
    • History of fatigue
    • Different approaches to fatigue analysis
  • Engineering Methods to Quantify Fatigue Damage
    • Stress-Life approach
    • Strain-Life approach
    • Damage-tolerant approach (i.e. fatigue crack growth using fracture mechanics)
    • Comparison of methods
  • Geometry and Loading Effects
    • Notches
    • Variable amplitude loading (incl. cycle counting and load sequence)
    • Multiaxial fatigue
  • Fatigue Mechanisms in Metal
    • Cyclic deformation in single and polycrystals
    • Fatigue crack initiation (incl. VHCF regime)
    • Fatigue crack growth (FCG) & FCG thresholds
  • Various Other Topics
    • Statistical considerations
    • Crack closure (incl variable amplitude loading in FCG)
    • Small fatigue cracks
    • contact fatigue: rolling and fretting
    • Corrosion-fatigue
    • High temperature fatigue (incl. creep-fatigue; thermomechanical fatigue

ME 7774 course taken at the Georgia Institute of Technology.

Strategy

Lesson Learned: It's easy to fall in love with a topic through the easy problems. It is the hard ones that truly test your passion for it.

Course Materials