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Non-contact micromachining by a dynamic feed rate controlled electrochemical discharge machining process

https://doi.org/10.1177/09544054221147611

Shrestha, Hirdayesh; Chen, Yu-Jen; Sundaram, Murali (December 2022, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture)

Electrochemical discharge machining (ECDM) is an emerging micromachining method to drill advanced non-conductive materials such as Hexagonal boron nitride (hBN). Physical contact of micro tools with work material could cause machining inaccuracies, excessive tool wear, and even tool breakage. In this study, a control system based on monitoring the force generated by the ECDM gas film has been developed to achieve non-contact machining of ECDM by dynamically adjusting the tool feed rate. The accuracy of the control system was verified by accelerometer and Fast Fourier Transformation (FFT) data. In the modules, it was found that a non-contact machining process requires the FFT amplitude to be lower than 42 V for a 1200 rpm tool rotation. The experimental results show consistent micro-holes with an average diameter of 650 µm and less than 20 µm error in the overcut achieved using this control system.
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A study on the sparking distance in the electrochemical discharging process

https://doi.org/10.1016/j.jmapro.2022.01.048

Chen, Yu-Jen; Sundaram, Murali (March 2022, Journal of Manufacturing Processes)

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Predicting the sparks occurrence in electrochemical discharge machining by machine learning using convolutional neural networks

https://doi.org/10.1016/j.procir.2022.09.195

Kale, Abhishek; Chen, Yu-Jen; Sundaram, Murali (January 2022, Procedia CIRP)

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Experimental study on the mitigation of surface damages caused in electrochemical discharge machining of glass

https://doi.org/10.1016/j.procir.2020.02.257

Chen, Yu-Jen; Sundaram, Murali (January 2020, Procedia CIRP)
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Pulse electrochemical discharge machining of glass-fiber epoxy reinforced composite

https://doi.org/10.1016/j.cirp.2019.04.113

Sundaram, Murali; Chen, Yu-Jen; Rajurkar, K. (January 2019, CIRP Annals)

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Guidelines for the use and interpretation of assays for monitoring autophagy (4th edition) ¹

https://doi.org/10.1080/15548627.2020.1797280

Klionsky, Daniel J.; Abdel-Aziz, Amal Kamal; Abdelfatah, Sara; Abdellatif, Mahmoud; Abdoli, Asghar; Abel, Steffen; Abeliovich, Hagai; Abildgaard, Marie H.; Abudu, Yakubu Princely; Acevedo-Arozena, Abraham; et al (January 2021, Autophagy)

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