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Question

 
According to Rankine's theory, the failure occurs at a point in a member
Options:
A .  when the maximum shear stress in a bi-axial stress system reaches the shear stress at elastic limit in a simple tension test
B .  when the maximum principal stress in a bi-axial stress system reaches the elastic limit of the material in a simple tension test
C .  when the strain energy per unit volume in a bi-axial stress system reaches the strain energy at the elastic limit per unit volume as determined from a simple tension test
D .  when the maximum principal strain in a bi-axial stress system reaches the strain at the elastic limit as determined from a simple tension test
Answer: Option B



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