Downloaded from https://www.everyspec.com ADS-79D-HDBK CONTENTS FIGURE PAGE I-5 CI data before and after gear replacement .........................................................159 I-6 CI data before and after gear replacement .........................................................159 I-7 CI data before and after gear replacement .........................................................159 I-8 CI data before and after gear replacement .........................................................160 I-9 CI data before and after gear replacement .........................................................160 I-10 CI data before and after gear replacement .........................................................160 I-11 CI data before and after gear replacement .........................................................161 I-12 CI data before and after gear replacement .........................................................161 I-13 CI data before and after gear replacement of all 11 helicopters ........................161 I-14 Block diagram of sample size analysis steps .....................................................163 I-15 ROC curve .........................................................................................................165 I-16 Dataset 1.
Weibull plot with green and red thresholds .....................................171 I-17 Dataset 1. Weibull plot with green threshold ...................................................171 I-18 Dataset 2. Weibull plot with green threshold ...................................................172 I-19 Dataset 3.
Weibull plot with green threshold ...................................................172 J-1 Example seeded fault testing and qualification process ....................................178 K-1 Top level system elements .................................................................................190 K-2 Elements of CBM system architecture ..............................................................191 K-3 V&V activities and flow for modeling and simulation (ASME V&V 10) ........195 K-4 Illustration of various validation sceneries (Adapted from Oberkampf) ...........196 K-5 Maintenance credit verification & validation process .......................................199 K-6 Mechanical health credit detailed verification process......................................203 K-7 Mechanical health credit validation process ......................................................205 K-8 Mechanical health-based prognostics detailed verification process ..................207 K-9 Mechanical health-based prognostics detailed validation process ....................209 K-10 Influence of data parameter coverage and data sampling coverage on achievable usage monitoring credits ........................................................210 K-11 Examples of time related considerations for usage spectrum monitoring .........212 K-12 Regime recognition-based structural usage monitoring credit detailed verification process ..........................................................................213 K-13 Structural usage monitoring credit detailed validation process .........................214 K-14 Structural health monitoring credit detailed verification process ......................216 K-15 Structural health monitoring credit detailed validation process ........................218 K-16 Software verification process ............................................................................221 L-1 Data orientation and formatting .........................................................................232 M-1 Oil monitoring techniques .................................................................................243 M-2 Example standard bell shape curve.
Long term statistical analysis supports routine sample analysis ....................................244 M-3 Example trend plot demonstrating rise–over–run: PPM versus operating hours .........................................................................245 M-4 Cumulative trend plot for on-line sensor data:
Iron (FE) mass versus date ...........................................................................................246 M-5 Wear modes, particle size ranges and detection methods .................................253 M-6 Bearing wear scar equal to two rolling elements spall length ...........................258 M-7 Vibration data and ODM data fusion model .....................................................260 xv