An engineering department is designing a new machine and the

An engineering department is designing a new machine, and the engineers have to choose a component for an aesthetic function, that is to say, a function that is not critical for the machine. The working team has to decide between two suppliers of similar components. The components present the following bathtub curves: Which component or supplier should be chosen? Elaborate a maintenance plan for the component?

Solution

1. Component B. Because for aesthetic components should have more life period than proper function(working).

2. For time period 0 to To, failure rate decreasing so we need to do maintenance by condition monitoring. From To to Tb, failure rate is constant so its need maintenance by repair or replacement of parts. Beyond Tb maintenance not enough. For certain period replacement of components may work. After that product will be unuseful.