Topic: Machine Design
The failure occurs at a point in a member, when the maximum shear stress in a bi-axial stress system reaches the shear stress at elastic limit in simple tension test, this is according to
- A. Rankine's theory
- B. Guest's theory
- C. Lame's theory
- D. None of the above
Answer: B. Guest's theory
Explanation: Maximum shear stress theory (or Guest-Tresca's theory) states that the failure or yielding of a ductile material will occur when the maximum shear stress of a material equals or exceeds the shear value at the yield point in a uniaxial tensile test.