3/8/2002, friday toughness. fracture modes stress field around crack tip
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3/8/2002, Friday
Toughness
Fracture Modes
Stress Field Around Crack Tip
Stress Concentration
Crack Tip Stress Distribution
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σij =KI
2πrfij(θ)
Stress Intensity Factor, K
Fracture Toughness, KIC
Crack Tip Plastic Zone
Fracture Process Zone
Concrete
Polymer Fracture - Craze
Polymer Yielding
Atomistic fracture pattern at different loading rate
Low strain rate High strain rate
dislocation cleavage
H. Tan and W. Yang, Acta Mechanica Sinica
co-existence of dislocationsand cleavage embryo
Fiber Composite
Stress-Strain Curve
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