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Failure of Seals Designed for a Large Aircraft Engine

Failure of Seals Designed for a Large Aircraft Engine. Bart Young. Statistical Methods for Reliability Engineering Summer 2008 Term Project. Description / Objective. Data from Pratt & Whitney Reliability Engineering Group Large Aircraft Engine Seal Failure Data

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Failure of Seals Designed for a Large Aircraft Engine

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  1. Failure of SealsDesigned for a Large Aircraft Engine Bart Young Statistical Methods for Reliability Engineering Summer 2008 Term Project

  2. Description / Objective • Data from Pratt & Whitney Reliability Engineering Group • Large Aircraft Engine Seal Failure Data • Tested to Failure / Hours Recorded • Determine Existing Seal Design Reliability • Analysis Results to Serve as Baseline for New Design Under Development

  3. Methodology • MINITAB ANALYSIS • Compute Descriptive Statistics • Select the Best-Fit Distribution • Determine Distribution Parameters • MAPLE CALCULATIONS • Calculate Analytical Reliability Expressions • EXCEL SIMULATION • Perform Monte Carlo Simulation

  4. Results / Summary • Exponential Distribution Best Fit • Monte Carlo Shows Good Predictability • MTTF: Component (325), System (108) • Large Standard Deviation • Recommend: • Increased Test Samples • Failure Trend Details

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