EAS437 Singapore University Reliability Centered Maintenance Discussion
Failure Data Analysis using Weibull Probability Plot
(a) The defect data for several line replaceable units (LRU) of an aircraft cabin temperature control system gathered over a 12-months period are compiled as shown in Table 1.
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Order Paper Now(i) Using the MS Excel application or otherwise, construct the Weibull Probability Plot for each of the LRU in the given aircraft cabin temperature control system. The cumulative distribution function may be estimated using the median rank method.
(20 marks)
(ii)
For each of the Weibull Probability Plots drawn in (a), construct the best-fit straight line(s) connecting failure data points, and estimate the shape parameter and scale parameter for each best-fit straight line(s).
(10marks)
(iii)
For each LRU, analyse the failure patterns exhibited from the plotted graph and evaluate the suitability of implementing Hard-Time (HT), On-Condition (OC) maintenance and Condition Monitoring (CM) maintenance.
(20marks)
(b) Discuss the latest industrial trend in applying the following maintenance concepts on commercial aircraft systems. Illustrate your discussion with specific, relevant aircraft examples.
(i)
On – condition Maintenance
(25marks)
(ii)
Prognostic Maintenance & Health Monitoring
(25marks)
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EAS437 Singapore University Reliability Centered Maintenance Discussion was first posted on October 30, 2020 at 4:19 pm.
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