Building digital-twin virtual machining for milling chatter detection based on VMD, synchro-squeeze wavelet, and pre-trained network CNNs with vibration signals

Khairul Jauhari (), Achmad Zaki Rahman, Mahfudz Huda, Achmad Widodo and Toni Prahasto
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Khairul Jauhari: Diponegoro University
Achmad Zaki Rahman: Diponegoro University
Mahfudz Huda: National Research and Innovation Agency (BRIN)
Achmad Widodo: Diponegoro University
Toni Prahasto: Diponegoro University

Journal of Intelligent Manufacturing, 2024, vol. 35, issue 7, No 5, 3083-3114

Abstract: Abstract Smart machining is becoming a major trend in the present manufacturing industry, which is increasingly adopting digital technology and artificial intelligence to improve production processes’ quality, speed, efficiency, and safety. This condition leads to the presentation of an updated study regarding the application of the digital-twin virtual machining model development, to detect chatter phenomena in milling processes. Chatter is a dynamic interaction where an instability state is observed between the workpiece and the cutter during material removal. This process affects the roughness of the finish surface and tool-life and eventually reduces the machining results in quality. Consequently, a novel intelligent machining system was developed for detecting chatter based on the variational mode decomposition method, wavelet-based synchro-squeeze transform, and Transfer Learning (TL) application. This TL application was created using modified pre-trained convolution neural networks to identify unstable (chatter) or stable state conditions of the process of milling-cut. The model was also developed due to being data-driven, where the measured vibration signals for the process of milling-cut were trained and tested through several modified pre-trained networks. The results showed a good-level model with an average classification accuracy of 94.04%. Therefore, the manufacturing industry could adopt this novel method, especially in machining, to overcome the problem of emphasizing the limited process of data monitoring conditions.

Keywords: Chatter detection; Pre-trained convolution neural networks (CNNs); Wavelet-based synchro-squeeze transform (WSST); Transfer learning; Variational mode decomposition (VMD) (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s10845-023-02195-0

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