Lesson 7 Brittle_v2 - Brittle Fracture You can observe a...

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Brittle Fracture “You can observe a lot just by watchin’.” Yogi Berra All graphics from ASM Metals Handbook unless otherwise noted
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Case Study: Paseo Bridge – Kansas City The Bridge Suspension bridge Built in 1957 Crosses Missouri River Major artery north of K.C. 94,000 vehicles/day
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Case Study: Paseo Bridge – Kansas City The problem Expansion joint misalignment (23 Jan 03) Deck rose 9 inches above approach on one end 1 inch step on another Guardrails snapped Bridge closed for 2 weeks
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Case Study: Paseo Bridge – Kansas City What happened? Cause(s) Mitigating circumstances How should it be fixed? Who will perform repairs? Who is at fault? State/City/Contractor? What are the ramifications? Cost Inconvenience Other bridges Deck Approach
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Case Study: Paseo Bridge – Kansas City
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How Material Breaks? Ductile vs. brittle fracture
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Lesson 7 Brittle_v2 - Brittle Fracture You can observe a...

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