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| 感度分析と故障の木解析（FTA-SA）× | モンテカルロシミュレーション× | |
|---|---|---|
| 分野≠ | 実験計画法 | 意思決定 |
| 系統≠ | Process / pipeline | MCDM |
| 提唱年≠ | 1961 (FTA); sensitivity integration formalised 1970s–1980s | 1949 |
| 提唱者≠ | H. A. Watson (Bell Labs, FTA, 1961); integrated sensitivity extensions developed through nuclear safety research (Vesely et al., 1981) | Metropolis, N., Ulam, S. |
| 種類≠ | Quantitative reliability and risk analysis technique | Robustness wrapper — Monte Carlo uncertainty propagation |
| 原典≠ | Vesely, W. E., Goldberg, F. F., Roberts, N. H., & Haasl, D. F. (1981). Fault Tree Handbook. US Nuclear Regulatory Commission, NUREG-0492. link ↗ | Metropolis, N., Ulam, S. (1949). The Monte Carlo method. Journal of the American Statistical Association DOI ↗ |
| 別名≠ | FTA-SA, fault tree sensitivity analysis, FTA with importance measures, probabilistic sensitivity analysis in fault trees | — |
| 関連≠ | 3 | 0 |
| 概要≠ | Sensitivity analysis integrated with fault tree analysis (FTA-SA) is a quantitative reliability engineering method that first models how system failure can occur through a hierarchical Boolean logic tree, then systematically varies the probability of each basic event to determine which components drive overall system failure risk most strongly. Widely used in nuclear, aerospace, chemical, and safety-critical system design, it prioritises mitigation effort and reveals which uncertainty in input data matters most. | MONTE-CARLO-SIMULATION (Monte Carlo Simulation — Stochastic uncertainty propagation through MCDM model) is a ranking multi-criteria decision-making (MCDM) method introduced by Metropolis, N., Ulam, S. in 1949. It turns a decision matrix of alternatives scored on multiple criteria into a structured, reproducible result. |
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