An infinite plate have a centre-crack having an initial crack of length 2ao = 8 mm isundergoing a constant amplitude cyclic tensile stress ranging between a minimumvalue of 180 MPa and a maximum of 350 MPa. Assuming the fatigue crack growthrate is governed by the equation,dadN=0.42 × 10-¹¹(AK)³ (m/cycle)11(i). At what crack length the plate will fracture(ii). Explain the properties of Fatigue. Also, explain with sketches the threephases of crack propagation due to cyclic loading in a material.(iii). Explain the factors that can improve the Fatigue strength of a machinecomponent.

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An infinite plate have a centre-crack having an initial crack of length 2ao = 8 mm is undergoing a constant amplitude cyclic tensile stress ranging between a minimum value of 180 MPa and a maximum of 350 MPa. Assuming the fatigue crack growth rate is governed by the equation, da dN = 0.42 × 10-¹¹(AK)³ (m/cycle) (i). At what crack length the plate will fracture (ii). Explain the properties of Fatigue. Also, explain with sketches the three phases of crack propagation due to cyclic loading in a material. (iii). Explain the factors that can improve the Fatigue strength of a machine component.

An infinite plate have a centre-crack having an initial crack of length 2ao = 8 mm is undergoing a constant amplitude cyclic tensile stress ranging between a minimum value of 180 MPa and a maximum of 350 MPa. Assuming the fatigue crack growth rate is governed by the equation, da dN = 0.42 × 10-¹¹(AK)³ (m/cycle) (i). At what crack length the plate will fracture (ii). Explain the properties of Fatigue. Also, explain with sketches the three phases of crack propagation due to cyclic loading in a material. (iii). Explain the factors that can improve the Fatigue strength of a machine component.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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