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Open AccessArticle

Tool Wear Mechanism in Cutting of Stack CFRP/UNS A97075

Industrial Design Department, Faculty of Engineering, Mechanical Engineering, University of Cadiz, Av. Universidad de Cádiz 10, E-11519 Puerto Real-Cádiz, Spain
Author to whom correspondence should be addressed.
Materials 2018, 11(8), 1276;
Received: 1 July 2018 / Revised: 19 July 2018 / Accepted: 23 July 2018 / Published: 25 July 2018
(This article belongs to the Special Issue Special Issue of the Manufacturing Engineering Society (MES))
The aeronautics industry’s competitiveness has led to the need to increase productivity with one shot drilling (OSD) systems capable of drilling stacks of dissimilar materials (fibre/metal laminates, FML) in order to reduce riveting times. Among the materials that constitute the current aeronautical models, composite materials and aluminium (Al) and titanium (Ti) alloys stand out. These one-pass machining techniques produce high-quality holes, especially when all the elements that have to be joined are made of the same material. This work has followed a conventional OSD strategy and the same cutting conditions applied to CFRP (carbo-fibre-reinforced polymer), Al and CFRP/Al stacked sheets to know the wear mechanisms produced. With this purpose, results were obtained by using current specific techniques, such as microstructural analysis, monitoring of the shear forces and analysis of macrogeometric deviations. It has been determined that when these drilling techniques are applied under the same cutting conditions to stacks of materials of a different nature, the results of the wear mechanisms acting on the tool differ from those obtained when machining each material separately. This article presents a comparison between the effects of tool wear during dry drilling of CFRP and UNS A97075 plates separately and when machined as stacks. View Full-Text
Keywords: wear; drilling; machining; dry drilling; stack; FML; CFRP; UNS A97075 wear; drilling; machining; dry drilling; stack; FML; CFRP; UNS A97075
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Fernandez-Vidal, S.R.; Fernandez-Vidal, S.; Batista, M.; Salguero, J. Tool Wear Mechanism in Cutting of Stack CFRP/UNS A97075. Materials 2018, 11, 1276.

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