Campus Units

Civil, Construction and Environmental Engineering, Electrical and Computer Engineering, Mechanical Engineering, Center for Nondestructive Evaluation (CNDE)

Document Type

Conference Proceeding

Conference

2018 Annual Conference of the Prognostics and Health Management Society

Publication Version

Published Version

Link to Published Version

https://www.phmpapers.org/index.php/phmconf/article/view/526

Publication Date

9-24-2018

Journal or Book Title

Proceedings of the Annual Conference of the PHM Society

Volume

10

Issue

1

Research Focus Area

Structural Engineering

Conference Title

2018 Annual Conference of the Prognostics and Health Management Society

Conference Date

September 24-27, 2018

City

Philadelphia, PA

Abstract

Condition monitoring and fault detection of roller element bearings is of vital importance to ensuring safe and reliable operation of rotating machinery systems. Over the past few years, convolutional neural network (CNN) has been recognized as a useful tool for fault detection of roller element bearings. Unlike the traditional fault diagnosis approaches, CNN does not require manually extracting the fault-related features from the raw sensor data and most CNN-based fault diagnosis approaches feed the raw or shallowly pre-processed data as the training/testing inputs to a CNN model, thereby avoiding the need for manual feature extraction. As such, these approaches can be considered as purely data-driven. However, it has been proven that some well-established signal pre-processing techniques such as spectral kurtosis and envelope analysis can effectively clean and pre-process a raw signal to be a better representative of the health condition of a bearing without losing critical diagnostic information. This study proposes a new approach to bearing fault diagnosis, termed the SK-based multi-channel CNN (SCNN), that combines signal pre-processing techniques with a modified 1D CNN. The proposed SCNN approach involves two main steps: in the first step, each raw sensor signal acquired from a bearing is pre-processed to maximize the signal-to-noise ratio without losing critical diagnostic information carried by the signal; and in the second step, all pre-processed signals are fed into a 1D multi-channel CNN that classifies the health condition of the bearing. An experimental case study was carried out to evaluate the performance of the proposed approach. In this case study, a machinery fault simulator was used to validate the performance of SCNN in the presence of faults unrelated to bearings such as shaft misalignment and rotor unbalance.

Comments

This proceeding is published as Sadoughi, Mohammakazem, Austin Downey, Garrett Bunge, Aditya Ranawat, Chao Hu, and Simon Laflamme, "A Deep Learning-based Approach for Fault Diagnosis of Roller Element Bearings," 2018 Annual Conference of the Prognostics and Health Management Society, Proceedings of the Annual Conference of the PHM Society 10, no. 1 (2018). Posted with permission.

Creative Commons License

Creative Commons Attribution 3.0 License
This work is licensed under a Creative Commons Attribution 3.0 License.

Copyright Owner

Mohammadkazem Sadoughi, Austin Downey, Garrett Bunge, Aditya Ranawat, Chao Hu, Simon Laflamme

Language

en

File Format

application/pdf

Published Version

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