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The wing of a MD 757 aircraft is fabricated from an aluminum alloy with a fracture toughness of 25 MPavm It has been determined that catastrophic fracture occurs when this alloy has a sharp internal

The wing of a MD 757 aircraft is fabricated from an aluminum alloy with a fracture toughness of 25 MPavm. It has been determined that catastrophic fracture occurs when this alloy has a sharp internal (through thickness crack exceeding 6 mm in length. A mechanic, while inspecting the plane, discovers a 5.0 mm deep surface crack in the plane and asks you whether it is all right to let the plane fly. Should the plane fly? (Support your answer with a calculation)
 

Jun 22 2020 View more View Less

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