The same shaft with a keyway, as in the previous question, is considered here again. The diameter of the shaft is d-30mm and the keyway fillet radius is r-3mm. Suppose that the static stress concentration factor is k-2.02 and the shaft is made of wrought steel with UTS-570 MPa. Using the table shown below, find the fatigue stress concentration correction factor (C). (Hint: round-off your answer to 4 decimal places). C₂ = 1/K d/4 d r Material Wrought Steel Cast steel d/8 K, 1+q(K-1) Notch Alleviation factors Flake S.G. 100/ 0.2 0.6 √a(mm) q=1/(1 +√(a/r) 170/0 Lesser of 0.25 or (250/) Gues in MN, Cast iron Aluminium alloys Magnesium alloys 0 Titanium alloys 0 Reinforced plastic composites Very large q-notch sensitivity factor a-notch alleviation factor r-radius of stress raiser K= Fatigue stress concentration factor K = Static stress concentration fac Corrected material properties S=C₂CC.C.S. S=CC.C.C.S. Quin MN, Ques in MN K. =K, K = K K-1

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Design analysis q8
The same shaft with a keyway, as in the previous question, is considered here again.
The diameter of the shaft is d-30mm and the keyway fillet radius is r-3mm. Suppose
that the static stress concentration factor is k-2.02 and the shaft is made of
wrought steel with UTS-570 MPa. Using the table shown below, find the fatigue
stress concentration correction factor (C). (Hint: round-off your answer to 4
decimal places).
C₂ = 1/K
d/4
d
r
Material
Wrought Steel
Cast steel
d/8
K₂ = 1+q(K₁ - 1)
Notch Alleviation factors
Flake
S.G.
100/
0.2
0.6
KFatigue stress concentration factor
Corrected material properties
√a(mm)
Cast iron
Aluminium alloys
Magnesium alloys
0
Titanium alloys
0
Reinforced plastic composites
Very large
q-notch sensitivity factor a-notch alleviation factor
q=1/(1+√(a/r)
170/0
Lesser of 0.25 or (250/q)3
S=C₂C₂CCS,
Gues in MN,
in MN
Pue In MN,
K. =K,
K = K
K-1
r-radius of stress raiser
K-Static stress concentration fac
S=C.C.C.C.S.
Transcribed Image Text:The same shaft with a keyway, as in the previous question, is considered here again. The diameter of the shaft is d-30mm and the keyway fillet radius is r-3mm. Suppose that the static stress concentration factor is k-2.02 and the shaft is made of wrought steel with UTS-570 MPa. Using the table shown below, find the fatigue stress concentration correction factor (C). (Hint: round-off your answer to 4 decimal places). C₂ = 1/K d/4 d r Material Wrought Steel Cast steel d/8 K₂ = 1+q(K₁ - 1) Notch Alleviation factors Flake S.G. 100/ 0.2 0.6 KFatigue stress concentration factor Corrected material properties √a(mm) Cast iron Aluminium alloys Magnesium alloys 0 Titanium alloys 0 Reinforced plastic composites Very large q-notch sensitivity factor a-notch alleviation factor q=1/(1+√(a/r) 170/0 Lesser of 0.25 or (250/q)3 S=C₂C₂CCS, Gues in MN, in MN Pue In MN, K. =K, K = K K-1 r-radius of stress raiser K-Static stress concentration fac S=C.C.C.C.S.
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