Research Article
Dynamic Importance Analysis of Components with Known Failure Contribution of Complex Systems
Table 4
Component importance for
hours.
| | Component | Birnbaum importance | Rank | Barlow-Proschan importance | Rank | Time integral importance | Rank | Natvig importance | Rank | Wu importance | Rank | Integrated importance | Rank |
| | CNC control system | 0.0299 | 6 | 0.1085 | 6 | 1.0255 | 6 | 0.1160 | 6 | 10.33 × 10−4 | 5 | 1.6513 × 10−5 | 6 | | Tool carry | 0.0388 | 3 | 0.1355 | 4 | 1.7175 | 1 | 0.1683 | 1 | 9.73 × 10−4 | 1 | 2.1559 × 10−5 | 3 | | Power supply and electrical system | 0.0407 | 1 | 0.1449 | 1 | 1.3634 | 2 | 0.1640 | 2 | 10.09 × 10−4 | 2 | 2.2611 × 10−5 | 1 | | Chip-removal system | 0.0380 | 4 | 0.1365 | 3 | 1.2495 | 4 | 0.1494 | 4 | 10.23 × 10−4 | 4 | 2.1089 × 10−5 | 4 | | Lubrication system | 0.0290 | 7 | 0.1072 | 7 | 1.0176 | 7 | 0.0907 | 7 | 10.65 × 10−4 | 7 | 1.5944 × 10−5 | 7 | | Hydraulic system | 0.0261 | 8 | 0.0972 | 8 | 1.0000 | 8 | 0.0205 | 8 | 10.82 × 10−4 | 8 | 1.4263 × 10−5 | 8 | | Main transmission system | 0.0352 | 5 | 0.1289 | 5 | 1.0793 | 5 | 0.1326 | 5 | 10.49 × 10−4 | 6 | 1.9452 × 10−5 | 5 | | Clamp system | 0.0395 | 2 | 0.1412 | 2 | 1.2620 | 3 | 0.1584 | 3 | 10.13 × 10−4 | 3 | 2.1938 × 10−5 | 2 |
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