3. A steel has the following properties: Tensile strength Yield strength Endurance limit 460 MPa 300 MPa 230 MPa A. Plot a modified Goodman diagram for this steel showing the lines for yielding as well as fatigue failure. B. For each of the following cyclic loadings determine whether yielding, infinite fatigue life, or finite fatigue life is expected. i. Omax = 250 MPa, omin = 0 11. Omax = 280 MPa, ơmin = -200 MPa 111. Omean = 280 MPa, oa = 70 MPa IV. Omean = -70 MPa, oa 140 MPa

Elements Of Electromagnetics
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3.
A steel has the following properties:
Tensile strength
Yield strength
460 MPa
300 MPa
Endurance limit
230 MPa
A. Plot a modified Goodman diagram for this steel showing the lines for yielding
as well as fatigue failure.
B. For each of the following cyclic loadings determine whether yielding, infinite
fatigue life, or finite fatigue life is expected.
i. Omax
ii. Omax
250 MPa, omin = 0
280 MPa, omin = -200 MPa
i11. Omean = 280 MPa, o = 70 MPa
1V. Omean = -70 MPa, o, = 140 MPa
Transcribed Image Text:3. A steel has the following properties: Tensile strength Yield strength 460 MPa 300 MPa Endurance limit 230 MPa A. Plot a modified Goodman diagram for this steel showing the lines for yielding as well as fatigue failure. B. For each of the following cyclic loadings determine whether yielding, infinite fatigue life, or finite fatigue life is expected. i. Omax ii. Omax 250 MPa, omin = 0 280 MPa, omin = -200 MPa i11. Omean = 280 MPa, o = 70 MPa 1V. Omean = -70 MPa, o, = 140 MPa
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