6. A large thick plate contains a crack of length 2a0 and is subjected to a...
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6. A large thick plate contains a crack of length 2a0 and is subjected to a constant amplitude cyclic stress normal to the crack which varies between omax and min. Fatigue crack growth is governed by the equation, Ne da dN where C is a material parameter and AKth is the threshold value of AK. Show that the number of cycles Ne required to grow the crack to instability is given by, log (KIC/σmax)² – (AKth/Ao)² παρ (AKth/Ao)2 End of question paper - = = C[(AK)² – (AKth)²], 1 πC(Δο)2 3 . [5] . 6. A large thick plate contains a crack of length 2a0 and is subjected to a constant amplitude cyclic stress normal to the crack which varies between omax and min. Fatigue crack growth is governed by the equation, Ne da dN where C is a material parameter and AKth is the threshold value of AK. Show that the number of cycles Ne required to grow the crack to instability is given by, log (KIC/σmax)² – (AKth/Ao)² παρ (AKth/Ao)2 End of question paper - = = C[(AK)² – (AKth)²], 1 πC(Δο)2 3 . [5] .
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Given Dala da Sman 200 mpa 5min 100 mpa s oman P 3 042X15 DK 200 4... View the full answer
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