In this study, a novel non-negative tensor factorization (NTF)-based method for vibration-based local damage detection in rolling element bearings is proposed. As the diagnostic signal registered from a faulty machine is non-stationary, the time-frequency method is frequently used as a primary decomposition technique. It is proposed here to extract multi-linear NTF-based components from a 3D array of time-frequency representations of an observed signal partitioned into blocks. As a result, frequency and temporal informative components can be efficiently separated from non-informative ones. The experiments performed on synthetic and real signals demonstrate the high efficiency of the proposed method with respect to the already known non-negative matrix factorization approach.
@article{arxiv.2403.12554,
title = {Non-negative tensor factorization for vibration-based local damage detection},
author = {Mateusz Gabor and Rafal Zdunek and Radoslaw Zimroz and Jacek Wodecki and Agnieszka Wylomanska},
journal= {arXiv preprint arXiv:2403.12554},
year = {2024}
}