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Fracture and Fatigue >> Content Detail



Calendar / Schedule



Calendar

SES#TOPIC
1Introduction
  • Fracture and fatigue of bulk materials, thin films and surfaces
  • Macroscopic failure modes
  • Microscopic failure modes
Part I: FRACTURE
2-3Mechanics of Fracture
  • Energy release rate and crack driving force
  • Linear elastic fracture mechanics
  • Elastic-plastic fracture mechanics
  • Resistance curves
  • Measurement matters and ASTM standards
4-5Micromechanisms of Fracture
  • Ductile failure
  • Transitions in fracture modes
  • Stress-based criteria
  • Strain-based criteria
  • Energy-based criteria
6-7Microstructural Effects
  • Ferrous alloys
  • Aluminum alloys
  • Matrix failure versus grain boundary fracture
  • Damage processes in ceramics and polymers
  • Thin films and surface coatings
8Interface Fracture Mechanics and Toughness Locus
  • Elasticity aspects
  • Plasticity aspects
9Toughening Mechanisms
  • Deflection toughening
  • Process zone toughening
  • Ligament toughening
  • Interfacial toughening
10Fracture Mechanisms in Polymers
  • Crazing
  • Shear localization
  • Rubber toughening
11Thin Films, Coatings and Layered Materials
  • Thermal residual stresses
  • Fracture mechanisms
  • Compositionally graded structural and thin-film layers
12Practical Considerations
  • Design
  • Case studies
13EXAM 1
Part II: FATIGUE
14Overview
  • Historical background
  • Different approaches to fatigue
15Micromechanisms 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
16Total-Life Approaches to Fatigue
  • Stress-life approach (S-N curves)
  • Strain-life approaches
  • Concept of damage accumulation
  • Some practical considerations
17Fatigue 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
18Fatigue Crack Growth in Brittle Solids
  • Constitutive models for cyclic deformation in ceramics
  • Room and high-fatigue crack growth in ceramics
19Fatigue Crack Growth in Polymeric Materials
  • Cyclic deformation characteristics
  • Micromechanisms of fatigue crack growth
  • Microscopic "signature" due to crazing and shear banding
20Mechanisms 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
21Corrosion Fatigue and Creep Fatigue
  • Effect of environments
  • Fracture mechanics characterization of creep fatigue
  • Case study of failure in power generation equipment, autovalves
22Fatigue 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
23-24Case 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
25EXAM 2

 








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