Lecture201 - Where is walking on the curve? 180 160 Stress...

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Where is walking on the curve? So…why do we see fractures in day to day life? 0 20 40 60 80 100 120 140 160 180 0 0.01 0.02 0.03 0.04 Strain Stress (MPa) Physiological Loading
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Objectives Why bone fractures? Fracture Mechanics Approach to Bone Fatigue Fractures & Fatigue Life
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Fracture Mechanics vs Strength of Materials Approach The Strength of Materials Approach The Fracture Mechanics Approach
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Flaws in Bone Vashishth et al 2000; Bone Diab 2005
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Flaws in Bone Diab & Vashishth 2005, Bone
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The Fracture Mechanics Approach Energy Criteria G – Energy Release Rate E-Elastic Modulus
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The Fracture Mechanics Approach Stress Intensity Criteria K– Stress Intensity Factor
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Damage Tolerance
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Three Modes of Fracture
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The Fracture Mechanics Approach Stress Intensity Criteria
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Experimental Determination of Fracture Resistance (Fracture Toughness)
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Is this fracture mechanics….?
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Is this fracture mechanics….? OK, Let me tell you a story………. .
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Two cows were looking at. . Two red deer fighting… Once upon a time there were…
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Experimental Determination of Fracture Toughness Crack propagation gage is mounted on specimen to monitor crack length. Specimens are tested on a mechanical testing machine
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Experimental Determination of Fracture Toughness Time Voltage
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Experimental Determination of Fracture Toughness ( 29 - + - + -
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Lecture201 - Where is walking on the curve? 180 160 Stress...

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