3/8/2002, friday toughness. fracture modes stress field around crack tip
TRANSCRIPT
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3/8/2002, Friday
Toughness
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Fracture Modes
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Stress Field Around Crack Tip
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Stress Concentration
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Crack Tip Stress Distribution
€
σij =KI
2πrfij(θ)
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Stress Intensity Factor, K
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Fracture Toughness, KIC
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Crack Tip Plastic Zone
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Fracture Process Zone
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Concrete
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Polymer Fracture - Craze
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Polymer Yielding
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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
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Fiber Composite
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Stress-Strain Curve