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	Rainflow-räkning	Response Surface Methodology med desirabilityfunktionoptimering
Ämnesområde	Tillförlitlighetsteknik	Tillförlitlighetsteknik
Familj	Process / pipeline	Process / pipeline
Ursprungsår	1974	1951
Upphovsperson	Tatsuo Endo	George Box and Kenneth Wilson
Typ	Cycle counting algorithm	Optimization methodology
Ursprungskälla	Goodman, J. (1899). Mechanics Applied to Engineering. Longman, Green and Co.	Box, G. E. P., & Wilson, K. B. (1951). On the experimental attainment of optimum conditions. Journal of the Royal Statistical Society, 13(1), 1-45.
Alias	Rainflow cycle counting, RFC	RSM, Desirability function, Multi-response optimization
Närliggande	4	4
Sammanfattning	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.	Response Surface Methodology (RSM) is a set of statistical and mathematical techniques for modeling and optimizing processes with multiple inputs (factors) and outputs (responses). The Desirability Function approach, introduced by Harrington (1965) and refined by Derringer and Suich (1980), extends RSM to solve multi-response optimization problems by combining competing objectives into a single index. This methodology is essential in product and process development where engineers must balance performance, cost, and reliability.