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Rainflow-counting algorithm

The rainflow-counting algorithm is used in calculating the fatigue life of a component in order to convert a loading sequence of varying stress into a set of constant amplitude stress reversals with equivalent fatigue damage. The method successively extracts the smaller interruption cycles from a sequence, which models the material memory effect seen…

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ASTM
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Algorithms

Closed setFatigue testingPagoda
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Miner's ruleStressMemory effectHysteresisCrack growth equation
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  • ASTM ASTM International

Algorithms

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Rainflow-counting algorithm

Nodes16
Edges15
Triples3
Avg. degree1.88
Density0.125
Components1

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rainflow cycles fatigue history method sequence cycle material stress time peak magnitude end interruption tensile half-cycle component damage smaller stress-strain

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SubjectPredicateObjectConfidenceSrc
used in fatigue testing by starting at the largest peakinstance ofA completely closed set of rainflow cycles can be obtained for a repeated load sequence0.80text
continue to the endinstance ofA completely closed set of rainflow cycles can be obtained for a repeated load sequence0.80text
wrapping around to the beginning.Four point methodThis method evaluates each set of 4 adjacent turning points A-B-C-D in turninstance ofA completely closed set of rainflow cycles can be obtained for a repeated load sequence0.80text

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