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| Metoda niezawodności pierwszego rzędu (FORM)× | Zliczanie cykli Rainflow× | |
|---|---|---|
| Dziedzina | Inżynieria niezawodności | Inżynieria niezawodności |
| Rodzina | Process / pipeline | Process / pipeline |
| Rok powstania≠ | 1969 | 1974 |
| Twórca≠ | Allin Cornell | Tatsuo Endo |
| Typ≠ | Reliability analysis method | Cycle counting algorithm |
| Źródło pierwotne≠ | Cornell, C. A. (1969). A probability-based structural code. Journal of the American Concrete Institute, 66(12), 974-985. DOI ↗ | Goodman, J. (1899). Mechanics Applied to Engineering. Longman, Green and Co. link ↗ |
| Inne nazwy | FORM, First-order second-moment method | Rainflow cycle counting, RFC |
| Pokrewne | 4 | 4 |
| Podsumowanie≠ | The First-Order Reliability Method (FORM) is a probabilistic technique for estimating the probability of structural failure given uncertain input parameters. Developed by Allin Cornell in 1969 and refined by Hasofer and Lind in 1974, FORM provides a computationally efficient approximation to the true failure probability by linearizing the limit-state function at the most probable failure point. It has become the cornerstone of modern structural reliability analysis and risk-based design. | Rainflow counting is a fatigue cycle counting method that converts a complex stress history into individual cycles for damage assessment. Developed by Tatsuo Endo and colleagues in 1974, it provides the most physically realistic representation of fatigue damage when combined with Miner's linear cumulative damage hypothesis. The algorithm has become the industry standard in reliability engineering and vibration analysis. |
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