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Marco Antonio Meggiolaro Jaime Tupiassú Pinho de Castro Hao Wu

Abstract

The recently proposed multiaxial racetrack filter (MRF) is able to deal with general non-proportional multiaxial load histories. While only requiring a single user-defined scalar filter amplitude, the MRF is able to synchronously eliminate non-damaging events from any noisy multiaxial load history without changing the overall shape of its original path, a necessary condition to avoid introducing errors in fatigue damage assessments. The MRF procedures are optimized here by the introduction of a pre-processing “partitioning” step on the load history data, which selects candidates for the reversal points in a robust partitioning process, highly increasing the filter efficiency and decreasing its computational time. The improved MRF is evaluated through the fatigue analyses of over-sampled tension-torsion data measured in 316L stainless steel tubular specimens under non-proportional load paths.

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Articles

How to Cite

Meggiolaro, M. A., Pinho de Castro, J. T. and Wu, H. (2017) “A two-step multiaxial racetrack filter algorithm for non-proportional load histories”, Frattura ed Integrità Strutturale, 11(41), pp. Pages 1-7. doi: 10.3221/IGF-ESIS.41.01.

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