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Chip root analysis after machining carbon fiber reinforced plastics (CFRP) at different fiber orientations
(2014)Procedia CIRP ~ 6th CIRP International Conference on High Performance Cutting, HPC2014Machining carbon fiber reinforced plastics (CFRP) is currently being heavily investigated. The main drivers come from the aviation and automotive industry. Current drilling and milling tool geometries exhibit immense wear resulting in the damage of the work piece. Detailed understanding of chip formation mechanisms when machining CFRP is paramount and enables the optimization of tool geometries in terms of tool lifetime and work piece ...Conference Paper -
Tool Life Time Extension with Nano-crystalline Diamond Coatings for Drilling Carbon-fibre Reinforced Plastics (CFRP)
(2014)Procedia CIRP ~ New Production Technologies in Aerospace Industry - 5th Machining Innovations Conference (MIC 2014)Carbon fibre reinforced plastics (CFRP) are delicate to machine as the material is highly abrasive and tends to show multiple workpiece damages like delamination, fibre pull out, uncut fibres and burnt matrix material. In result machining CFRP requires on the one hand tools which can withstand the massive wear, on the other hand geometrical highly adaptable tools to produce flawless workpieces. Diamond coated solid carbide tools can provide ...Conference Paper -
Analysis of Material Weakening in CFRP after a Drilling Operation
(2014)Procedia CIRP ~ New Production Technologies in Aerospace Industry - 5th Machining Innovations Conference (MIC 2014)Drilling Carbon Fibre Reinforced Plastics (CFRP) induces different material defects like delamination, burnt matrix material, rough bore channel surfaces, fibre pull-out and uncut fibres. Intensive research has been conducted to analyse the amount of defects caused, describing the surface and subsurface defects introduced by machining operations [1], [2]. Additionally, the mechanical strength of rivet joints has been analysed intensively ...Conference Paper -
Comparison of ground and laser machined polycrystalline diamond (PCD) tools in cutting carbon fiber reinforced plastics (CFRP) for aircraft structures
(2012)Procedia CIRP ~ Fifth CIRP Conference on High Performance Cutting 2012The extended use of carbon reinforced plastics (CFRP), especially in aircraft industries, requires efficient machining solutions due to superior mechanical properties with a lower weight compared to metals. This material is highly abrasive, requiring very hard cutting materials and additionally only a sharp cutting edge provides a sufficient surface quality on the workpiece. Ultrashort laser pulses and the focusability of high brilliance ...Conference Paper