Question 4: (A)The width of aircraft inspection panel which made of 7074-T651 aluminium alloy is 65.4 mm. Assuming the m

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Question 4 A The Width Of Aircraft Inspection Panel Which Made Of 7074 T651 Aluminium Alloy Is 65 4 Mm Assuming The M 1 (78.18 KiB) Viewed 44 times

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Question 4: (A)The width of aircraft inspection panel which made of 7074-T651 aluminium alloy is 65.4 mm. Assuming the material properties of this panel are (Fracture toughness, Kıc = 25.8 MN m-3/2 and Yield stress, Gy = 505 MPa. During an inspection, an edge through-crack, a, of length 6.4 mm is found. If a cyclic stress of 90 MPa is applied on this plate. Determine the number of cycles to failure (Nf) using Paris' Law. Taking A = 1.5x10-12 m/(MNm-3/2)" per cycle and m = 2.8, (Take Y = 1.12) = MO_TEM_035_04 Page 8 of 1 Stress Analysis (MECH0018.1) - Spring - 2022-CW (Assignment 2) - Session A-QP (B) Examine a range of the fracture toughness Kịc values between (20 to 30) MN m-3/2 and discuss how that will effect the number of cycles to failure.