| 1 |
Introduction
- Fracture and fatigue of bulk materials, thin films and surfaces
- Macroscopic failure modes
- Microscopic failure modes
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| Part I: FRACTURE |
| 2-3 |
Mechanics of Fracture
- Energy release rate and crack driving force
- Linear elastic fracture mechanics
- Elastic-plastic fracture mechanics
- Resistance curves
- Measurement matters and ASTM standards
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| 4-5 |
Micromechanisms of Fracture
- Ductile failure
- Transitions in fracture modes
- Stress-based criteria
- Strain-based criteria
- Energy-based criteria
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| 6-7 |
Microstructural Effects
- Ferrous alloys
- Aluminum alloys
- Matrix failure versus grain boundary fracture
- Damage processes in ceramics and polymers
- Thin films and surface coatings
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| 8 |
Interface Fracture Mechanics and Toughness Locus
- Elasticity aspects
- Plasticity aspects
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| 9 |
Toughening Mechanisms
- Deflection toughening
- Process zone toughening
- Ligament toughening
- Interfacial toughening
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| 10 |
Fracture Mechanisms in Polymers
- Crazing
- Shear localization
- Rubber toughening
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| 11 |
Thin Films, Coatings and Layered Materials
- Thermal residual stresses
- Fracture mechanisms
- Compositionally graded structural and thin-film layers
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| 12 |
Practical Considerations
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| 13 |
EXAM 1 |
| Part II: FATIGUE |
| 14 |
Overview
- Historical background
- Different approaches to fatigue
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| 15 |
Micromechanisms of Fatigue Crack Initiation in Ductile and Brittle Solids
- Cyclic hardening and evolution of dislocation patterns
- Persistent slip bands and surface roughening
- Slip-based models for fatigue crack initiation
- Crack initiation in commercial materials, ceramics and polymers
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| 16 |
Total-Life Approaches to Fatigue
- Stress-life approach (S-N curves)
- Strain-life approaches
- Concept of damage accumulation
- Some practical considerations
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| 17 |
Fatigue Crack Growth in Ductile Metals and Alloys
- Fracture mechanics characterization
- Fatigue life calculations
- Different microscopic and macroscopic stages of fatigue crack growth
- Models of formation of ductile striations and crack growth
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| 18 |
Fatigue Crack Growth in Brittle Solids
- Constitutive models for cyclic deformation in ceramics
- Room and high-fatigue crack growth in ceramics
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| 19 |
Fatigue Crack Growth in Polymeric Materials
- Cyclic deformation characteristics
- Micromechanisms of fatigue crack growth
- Microscopic "signature" due to crazing and shear banding
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| 20 |
Mechanisms of Fatigue Crack Growth Retardation
- Different types of crack closure (experiments, analyses and numerical simulations)
- Fatigue crack deflection (models and microstructural examples)
- Crack-tip versus crack-wake effects
- Crack retardation following tensile overloads
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| 21 |
Corrosion Fatigue and Creep Fatigue
- Effect of environments
- Fracture mechanics characterization of creep fatigue
- Case study of failure in power generation equipment, autovalves
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| 22 |
Fatigue at Interfaces
- Fatigue fracture parallel to a bimaterial interface
- Fatigue fracture normal to a bimaterial interface
- Fatigue of coatings
- Thermomechanical fatigue of coated and layered materials
|
| 23-24 |
Case Studies
- 1985 Japan Airlines Plane Crash
- Failure analysis of a total-hip and knee replacement component
- Failure of laser-linked metal interconnects in microelectronics
- Critical issues in the failure of mechanical heart valves
- Fatigue failure in turbogenerators
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| 25 |
EXAM 2 |
