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Tool condition monitoring of diamond-coated burrs with acoustic emission utilising machine learning methods

Jessel, Thomas, Byrne, Carl, Eaton, Mark ORCID:, Merrifield, Ben, Harris, Stuart and Pullin, Rhys ORCID: 2024. Tool condition monitoring of diamond-coated burrs with acoustic emission utilising machine learning methods. International Journal of Advanced Manufacturing Technology 130 (3-4) , pp. 1107-1124. 10.1007/s00170-023-12700-7

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Within manufacturing there is a growing need for autonomous Tool Condition Monitoring (TCM) systems, with the ability to predict tool wear and failure. This need is increased, when using specialised tools such as Diamond-Coated Burrs (DCBs), in which the random nature of the tool and inconsistent manufacturing methods create large variance in tool life. This unpredictable nature leads to a significant fraction of a DCB tool’s life being underutilised due to premature replacement. Acoustic Emission (AE) in conjunction with Machine Learning (ML) models presents a possible on-machine monitoring technique which could be used as a prediction method for DCB wear. Four wear life tests were conducted with a ∅1.3 mm #1000 DCB until failure, in which AE was continuously acquired during grinding passes, followed by surface measurements of the DCB. Three ML model architectures were trained on AE features to predict DCB mean radius, an indicator of overall tool wear. All architectures showed potential of learning from the dataset, with Long Short-Term Memory (LSTM) models performing the best, resulting in prediction error of MSE = 0.559 μm2 after optimisation. Additionally, links between AE kurtosis and the tool’s run-out/form error were identified during an initial review of the data, showing potential for future work to focus on grinding effectiveness as well as overall wear. This paper has shown that AE contains sufficient information to enable on-machine monitoring of DCBs during the grinding process. ML models have been shown to be sufficiently precise in predicting overall DCB wear and have the potential of interpreting grinding condition.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Additional Information: License information from Publisher: LICENSE 1: URL:, Type: open-access
Publisher: Springer
ISSN: 0268-3768
Funders: EPSRC
Date of First Compliant Deposit: 3 January 2024
Date of Acceptance: 17 November 2023
Last Modified: 15 Jan 2024 12:06

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