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  3. 2 an aluminum alloy has a fracture toughness of 260...

Question: 2 an aluminum alloy has a fracture toughness of 260...

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2. An aluminum alloy has a fracture toughness of 26.0 MPa m12. An experiment showed that fracture occurs at a stress of 112 MPa (16,240 psi) when the maximum internal crack length is 8.6 mm. For this same aluminum alloy, calculate the stress level at which fracture wl occur for a critical internal crack length of 6.0 mm.
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