FMD 1991 : 1991

1 Background and introduction
1.1 Data collection
1.2 Data definitions
1.3 Data interpretation
1.3.1 Handling induced failures
1.3.2 Handling source reporting inconsistencies
1.3.3 Handling various levels of failure reporting
         detail
1.3.4 Re-normalizing to remove failure mechanisms
1.3.5 Combining distributions
1.3.6 Evaluating single source distributions
1.3.7 Evaluating application specific distributions
1.4 Data summary example
2 FMECA user guide
2.0 Introduction
2.1 Failure mode, effects and criticality analysis
         (FMECA) overview
2.1.1 Failure mode effects analysis (FMEA)
2.1.2 Criticality analysis (CA)
2.2 FMECA application
2.3 FMECA description
2.4 FMEA analysis process
2.5 Analyzing failure effects
2.5.1 Overview
2.5.2 Methods
2.5.3 Approach
2.6 Ranking criticality
2.6.1 Overview
2.6.2 CA analysis approach
2.6.2.1 Qualitative approach
2.6.2.2 Quantitative approach
2.6.3 Criticality matrix
2.7 Summary
2.8 Normalized failure mode distributions for FMECA
3 Failure distribution summaries
4 Data sources
Part Index
Tables
1-1 Example of combining data
1-2 Failure distribution results
2-1 Typical failure effects probabilities (beta)
2-2 Re-normalizing FMD-91 distributions
Figures
1-1 Data format
1-2 Fixed capacitor failure distribution
2-1 FMEA worksheet format
2-2 Criticality analysis worksheet
2-3 Criticality matrix

Presents failure mode distributions to be used in support of reliability analysis such as FMEAs and FMECAs when used in conjunction with accepted reliability prediction techniques such as MIL-HDBK 217 along with RACs NPRD. The intent is that they form a basis for a standard set of distributions to be used in the reliability engineering industry.