QUESTION 4 A spherical pressure vessel is made of ASTM A517-F steel and operates at room temperature. The inner diameter is 1.5 m, the wall thickness is 10 mm, and the maximum pressure is 6 MPa. ASTM AS17-F steel has a fracture toughness of 187 MPa/m and the yielding stress at 760 MPa. Use 3.142 as the value of T. To calculate the nominal stress in the wall, please use the equation here: px ri 2 xt PART A Is the leak-before-break condition met? or (MPa) = Ce (m) = Is the leak-before-break condition met?

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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QUESTION 4
A spherical pressure vessel is made of ASTM AS17-F steel and operates at room temperature.
The inner diameter is 1.5 m, the wall thickness is 10 mm, and the maximum pressure is 6 MPa.
ASTM AS17-F steel has a fracture toughness of 187 MPa/m and the yielding stress at 760 MPa.
Use 3.142 as the value of T.
To calculate the nominal stress in the wall, please use the equation here:
px ri
2 xt
PART A
Is the leak-before-break condition met?
o (MPa) =
Ce (m) =
Is the leak-before-break condition met?
Transcribed Image Text:QUESTION 4 A spherical pressure vessel is made of ASTM AS17-F steel and operates at room temperature. The inner diameter is 1.5 m, the wall thickness is 10 mm, and the maximum pressure is 6 MPa. ASTM AS17-F steel has a fracture toughness of 187 MPa/m and the yielding stress at 760 MPa. Use 3.142 as the value of T. To calculate the nominal stress in the wall, please use the equation here: px ri 2 xt PART A Is the leak-before-break condition met? o (MPa) = Ce (m) = Is the leak-before-break condition met?
PART B
What is the safety factor against fracture?
Crack length a can be approximated as t (mm) =
K (MPa/m)
XK =
PART C
What is the safety factor against yielding?
Xo =
Transcribed Image Text:PART B What is the safety factor against fracture? Crack length a can be approximated as t (mm) = K (MPa/m) XK = PART C What is the safety factor against yielding? Xo =
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