The effects of minimum quantity lubrication and cryogenic liquid nitrogen cooling on drilled hole quality in GLARE fibre metal laminates

K. Giasin; S. Ayvar-Soberanis; A. Hodzic

doi:10.1016/j.matdes.2015.10.049

The effects of minimum quantity lubrication and cryogenic liquid nitrogen cooling on drilled hole quality in GLARE fibre metal laminates

K. Giasin^*, S. Ayvar-Soberanis, A. Hodzic

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The cooling technology used in the machining process can influence the surface integrity of aerospace structural components. This study investigates the impact of using cryogenic liquid nitrogen and minimum quantity lubricating coolants on the drilled hole quality in GLARE 2B 11/10-0.4 fibre metal laminates. The hole quality is assessed by inspecting the burr formation on the hole edge of the upper and lower aluminium sheets, and by inspecting the deviation of nominal hole size and circularity. The results were compared with dry (unlubricated) drilling trials from a previous study on GLARE laminates of similar grade. This study also investigates the influence of flow rate and air pressure on the hole quality. The results show that using cryogenic and minimum quantity lubrication coolants can significantly reduce exit burr formation.

Original language	English
Pages (from-to)	996-1006
Number of pages	11
Journal	Materials and Design
Volume	89
DOIs	https://doi.org/10.1016/j.matdes.2015.10.049
Publication status	Published - 5 Jan 2016

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abstract = "The cooling technology used in the machining process can influence the surface integrity of aerospace structural components. This study investigates the impact of using cryogenic liquid nitrogen and minimum quantity lubricating coolants on the drilled hole quality in GLARE 2B 11/10-0.4 fibre metal laminates. The hole quality is assessed by inspecting the burr formation on the hole edge of the upper and lower aluminium sheets, and by inspecting the deviation of nominal hole size and circularity. The results were compared with dry (unlubricated) drilling trials from a previous study on GLARE laminates of similar grade. This study also investigates the influence of flow rate and air pressure on the hole quality. The results show that using cryogenic and minimum quantity lubrication coolants can significantly reduce exit burr formation.",

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PY - 2016/1/5

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AB - The cooling technology used in the machining process can influence the surface integrity of aerospace structural components. This study investigates the impact of using cryogenic liquid nitrogen and minimum quantity lubricating coolants on the drilled hole quality in GLARE 2B 11/10-0.4 fibre metal laminates. The hole quality is assessed by inspecting the burr formation on the hole edge of the upper and lower aluminium sheets, and by inspecting the deviation of nominal hole size and circularity. The results were compared with dry (unlubricated) drilling trials from a previous study on GLARE laminates of similar grade. This study also investigates the influence of flow rate and air pressure on the hole quality. The results show that using cryogenic and minimum quantity lubrication coolants can significantly reduce exit burr formation.

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The effects of minimum quantity lubrication and cryogenic liquid nitrogen cooling on drilled hole quality in GLARE fibre metal laminates

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