Journal
APPLIED COMPOSITE MATERIALS
Volume 24, Issue 1, Pages 113-137Publisher
SPRINGER
DOI: 10.1007/s10443-016-9517-0
Keywords
Glare; Drilling; Delamination; Finite element analysis; Burr formation; Surface roughness
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Funding
- Department of Mechanical Engineering at the University of Sheffield
- OSG
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Machining Glass fibre aluminium reinforced epoxy (GLARE) is cumbersome due to distinctively different mechanical and thermal properties of its constituents, which makes it challenging to achieve damage-free holes with the acceptable surface quality. The proposed work focuses on the study of the machinability of thin (similar to 2.5 mm) GLARE laminate. Drilling trials were conducted to analyse the effect of feed rate and spindle speed on the cutting forces and hole quality. The resulting hole quality metrics (surface roughness, hole size, circularity error, burr formation and delamination) were assessed using surface profilometry and optical scanning techniques. A three dimensional (3D) finite-element (FE) model of drilling GLARE laminate was also developed using ABAQUS/Explicit to help understand the mechanism of drilling GLARE. The homogenised ply-level response of GLARE laminate was considered in the FE model to predict cutting forces in the drilling process.
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