Cycle counting of the peak-valley filtered multiaxial loading history using Wang-Brown method

Abstract

This paper focuses on the cycle counting of multiaxial load history using the Wang-Brown method, and its applications to the peak-valley filtered data. Conventionally, in the uniaxial loading, the cycle counting is started with the peak-valley filtering, i.e. only the maximum and minimum points of the data are stored. In the multiaxial loading, the use of a peak-valley filtered data and the Wang-Brown method can lead to issues related to the use of the equivalent strain. Such cases are not only theoretical load cases but can typically appear e.g. in rotating engine components. This paper discusses about the issues related to the Wang-Brown method in such cases, and presents the potential solutions to avoid them.