Research Article
Dynamic Importance Analysis of Components with Known Failure Contribution of Complex Systems
Table 3
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 | 0.0401 | 6 | 0.1115 | 6 | 1.0000 | 8 | 0.1160 | 6 | 11.84 × 10−4 | 5 | 2.2146 × 10−5 | 6 | | Tool carry | 0.0524 | 2 | 0.1355 | 4 | 1.9648 | 1 | 0.1683 | 1 | 11.14 × 10−4 | 1 | 2.9116 × 10−5 | 2 | | Power supply and electrical system | 0.0537 | 1 | 0.1480 | 1 | 1.9501 | 2 | 0.1640 | 2 | 11.45 × 10−4 | 2 | 2.9833 × 10−5 | 1 | | Chip-removal system | 0.0507 | 3 | 0.1405 | 3 | 1.7962 | 4 | 0.1494 | 4 | 11.62 × 10−4 | 4 | 2.8137 × 10−5 | 3 | | Lubrication system | 0.0374 | 7 | 0.1062 | 7 | 1.4474 | 6 | 0.0907 | 7 | 12.21 × 10−4 | 7 | 2.0562 × 10−5 | 7 | | Hydraulic system | 0.0268 | 8 | 0.0805 | 8 | 1.5984 | 5 | 0.0205 | 8 | 12.58 × 10−4 | 8 | 1.4645 × 10−5 | 8 | | Main transmission system | 0.0474 | 5 | 0.1330 | 5 | 1.2464 | 7 | 0.1326 | 5 | 11.92 × 10−4 | 6 | 2.6193 × 10−5 | 5 | | Clamp system | 0.0498 | 4 | 0.1447 | 2 | 1.8899 | 3 | 0.1584 | 3 | 11.50 × 10−4 | 3 | 2.7659 × 10−5 | 4 |
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