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Question: 10 a steel tie rod 254 mm in diameter has...

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10. A steel tie rod 25.4 mm in diameter has the following minimum properties: Yield Strength 750MPa Tensile Strength 850Mpa Fracture Toughness = 110 MPam0.5 It was subjected to an axial tensile force of 370kN. Determine its mechanical safety with respect to ductile and brittle fracture. Consider B- Hint: Brittle fracture would occur if the rod contained a crack. (10 marks) 11 What would the following features on the fractured surface face of a broken shaft tell you about the mode of failure and the levels of stress that that shaft experienced? (a) ratchet marks (b) beach marks (c) size of final fracture area (7

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