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5. A large center-cracked plate containing an initial crack of length 2a=10 [mm] is subjected to a constant amplitude cy
Posted: Mon May 02, 2022 3:09 pm
by answerhappygod
- 5 A Large Center Cracked Plate Containing An Initial Crack Of Length 2a 10 Mm Is Subjected To A Constant Amplitude Cy 1 (47.5 KiB) Viewed 43 times
5. A large center-cracked plate containing an initial crack of length 2a=10 [mm] is subjected to a constant amplitude cyclic tensile stress ranging between a minimum value of 150 [MPa] and a maximum of 250 [MPa]. Assuming the fatigue crack growth rate is governed by the equation da 0.42 10-"(AK) (m/cycle) dN (1) Calculate the crack growth rate when the crack length has the following values 2a=10 mm, 30 mm, 50 mm. (2) Assuming further that the relevant fracture toughness is 60 MPa Vm, estimate the number of cycles to failure.