The effect of MQL on tool wear progression in low-frequency vibration-assisted drilling of CFRP/Ti6Al4V stack material

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DOI	Resolve DOI: https://doi.org/10.3390/jmmp5020050
Author	Search for: Hussein, Ramy ORCID identifier: https://orcid.org/0000-0001-8216-1251; Search for: Sadek, Ahmad¹ORCID identifier: https://orcid.org/0000-0002-2751-7400; Search for: Elbestawi, Mohamed A.; Search for: Attia, Helmi¹ORCID identifier: https://orcid.org/0000-0002-4705-5311
Affiliation	National Research Council of Canada. Aerospace
Format	Text, Article
Physical description	20 p.
Subject	vibration-assisted drilling; low-frequency vibration-assisted drill; CFRP/Ti6Al4V; stacked material; minimum quantity lubricant; tool wear; surface integrity; delamination; burr formation
Abstract	In this paper, the tool wear mechanisms for low-frequency vibration-assisted drilling (LF-VAD) of carbon fiber-reinforced polymer (CFRP)/Ti6Al4V stacks are investigated at various machining parameters. Based on the kinematics analysis, the effect of vibration amplitude on the chip formation, uncut chip thickness, chip radian, and axial velocity are examined. Subsequently, the effect of LF-VAD on the cutting temperature, tool wear, delamination, and geometrical accuracy was evaluated for different vibration amplitudes. The LF-VAD with the utilization of minimum quantity lubricant (MQL) resulted in a successful drilling process of 50 holes, with a 63% reduction in the cutting temperature. For the rake face, LF-VAD reduced the adhered height of Ti6Al4V by 80% at the low cutting speed and reduced the crater depth by 33% at the high cutting speed. On the other hand, LF-VAD reduced the flank wear land by 53%. Furthermore, LF-VAD showed a significant enhancement on the CFRP delamination, geometrical accuracy, and burr formation.
Publication date	2021-05-17
Publisher	MDPI
Licence	Creative Commons, Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/
In	Journal of Manufacturing and Materials Processing 5, no. 2 (17 May 2021).
Language	English
Peer reviewed	Yes
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Record identifier	540c50f1-7062-4dc7-b724-d7ac1f741d32
Record created	2022-11-09
Record modified	2022-11-09

Date modified:: 2025-11-07