(a) The mean ultimate tensile strength of a steel is 1500 MPa. What value should be used if the design calls tor a reliability of 99%. (b) Calculat the factor of safety against quasi-static failure at a point in a structure where there is a 2-D state of plane stess with oxx=-35 ksi, oyy= 10 ksi and Ty 0 ksi. The material is class 30 grey cast iron with Sut 32ksi ; Suc =-109ksi. %3!

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Please do it typed not handwriting. Make sure the answer is correct Don't copy from any other online answers please
(a) The mean ultimate tensile strength of a steel is 1500 MPa. What value should be used if
the design calls for a reliability of 99%.
(b) Calculat the factor of safety against quasi-static failure at a point in a structure where there is a 2-D state
of plane stess with Oxx-35 ksi, oyy 10 ksi and tgy 0 ksi. The material is class 30 grey cast iron with
Sui = 32ksi ; Suc = -109ksi.
Page 1 of 1
Transcribed Image Text:(a) The mean ultimate tensile strength of a steel is 1500 MPa. What value should be used if the design calls for a reliability of 99%. (b) Calculat the factor of safety against quasi-static failure at a point in a structure where there is a 2-D state of plane stess with Oxx-35 ksi, oyy 10 ksi and tgy 0 ksi. The material is class 30 grey cast iron with Sui = 32ksi ; Suc = -109ksi. Page 1 of 1
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