The
time frame allocated for this research study is 4 months. It will start in
August 2012 and is projected to be completed in October 2012. The Gantt chart
for the project and its milestone are shown as in Table 1.
Practically,
reliability is often more difficult to specify than many major performance
characteristics and is certainly more difficult than most to measure. The
accurate assessment of the reliability of a product in use is often difficult
because of the long period needed or the large number of samples required in
order to gain statistical confidence in the assessment. In reliability
estimation, the failure rate models are approximations to reality. The failure
rate models are normally based on the best field data that could be obtained
for a wide variety of parts and systems. This data is then analysed, with many
simplifying assumptions applied, to create usable models. Thus, one should not
treat a reliability estimation numbers for the system as an absolute prediction
of field failure rate. Generally, it has been agreed that these estimations can
be very useful when used for relative comparison, such as comparing design
alternatives, or comparing products.
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