Question 1
(a)
Write a brief explanation about ductile materials.
(4 marks)
(b)
Differentiate between shaft, axle and spline.
(6 marks)
(c)
A power transmission shaft was found to be broken after more than 15,000 hours
operation.
i.
Discuss two failures phenomenon that happened to the shaft in Figure 1.
(4 marks)
ii. Suggest three improvement methods to increase the fatigue life of the
component.
(6 marks)
Figure 1: Closed up photo of ruptured shaft.