Question 1:
(i) Discuss and define Isotropy, Anisotropy and Orthotropy with regards to engineering materials.
(ii) Regarding Finite Element Analysis:
a. List the three main types of elements and explain how to choose elements?
b. Common sources of errors in FEA?
(iii) After conducting a photoelastic investigation of a sample, you remove the load and notice that
a fringe pattern still exists. What could this mean?
Question 2:
A shaft has a maximum allowable shear stress of 25 MPa and must carry a torque of 150 N.m. It is
required to have a change in diameter from 35 mm to 42 mm. How would you design this section?
Show calculations to justify you answer.
Question 3:
A delta strain gauge rosette, measured the strain at a point on the surface of a machine element. The
Question 4:
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