Fracture and Fatigue

Calendar

SES #	TOPICS
1	Introduction Fracture and fatigue of bulk materials, thin films and surfaces Macroscopic failure modes Microscopic failure modes
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
4-5	Micromechanisms of Fracture Ductile failure Transitions in fracture modes Stress-based criteria Strain-based criteria Energy-based criteria
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
8	Interface Fracture Mechanics and Toughness Locus Elasticity aspects Plasticity aspects
9	Toughening Mechanisms Deflection toughening Process zone toughening Ligament toughening Interfacial toughening
10	Fracture Mechanisms in Polymers Crazing Shear localization Rubber toughening
11	Thin Films, Coatings and Layered Materials Thermal residual stresses Fracture mechanisms Compositionally graded structural and thin-film layers
12	Practical Considerations Design Case studies
13	EXAM 1
Part II: FATIGUE
14	Overview Historical background Different approaches to fatigue
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
16	Total-Life Approaches to Fatigue Stress-life approach (S-N curves) Strain-life approaches Concept of damage accumulation Some practical considerations
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
18	Fatigue Crack Growth in Brittle Solids Constitutive models for cyclic deformation in ceramics Room and high-fatigue crack growth in ceramics
19	Fatigue Crack Growth in Polymeric Materials Cyclic deformation characteristics Micromechanisms of fatigue crack growth Microscopic “signature” due to crazing and shear banding
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
21	Corrosion Fatigue and Creep Fatigue Effect of environments Fracture mechanics characterization of creep fatigue Case study of failure in power generation equipment, autovalves
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
25	EXAM 2