scholarly journals Influence of fibre orientation on cutting force in up and down milling of UD-CFRP composites

2020 ◽  
Vol 111 (3-4) ◽  
pp. 881-893
Author(s):  
Norbert Geier
Keyword(s):  
Cutting Force ◽  
Fibre Orientation ◽  
Orientation Angle ◽  
Radial Force ◽  
Fast Fourier Transformation ◽  
Force Component ◽  
Cfrp Composites ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Full Factorial

Abstract Machining of carbon fibre reinforced polymer (CFRP) composites is extremely difficult, mainly due to their inhomogeneous and anisotropic properties. Predicting of cutting force during machining of CFRP is also difficult because the machinability properties of the composite are significantly orientation-dependent (fibre and machining directions). The main objective of the present study is to analyse the influence of fibre orientation on cutting force in milling of unidirectional CFRP. Up and down milling experiences were conducted based on a full factorial design. Experimental data were processed by fast Fourier transformation, regression analysis, and graphical adequate analysis. Multiple-order polynomial models were developed in order to minimise cutting force. Experimental results show that fibre orientation angle significantly influences the cutting force; furthermore, it does not have a significant effect on the passive force component, while the radial force component is more sensitive to the fibre orientation at up milling, than at down milling. An optimal condition is recommended for zig-zag milling of unidirectional CFRPs.

scholarly journals Drilling of carbon fibre reinforced polymer (CFRP) composites: Difficulties, challenges and expectations

2021 ◽  
Vol 54 ◽  
pp. 284-289
Author(s):  
Norbert Geier ◽  
Jinyang Xu ◽  
Csongor Pereszlai ◽  
Dániel István Poór ◽  
J. Paulo Davim
Keyword(s):  
Carbon Fibre ◽  
Reinforced Polymer ◽  
Cfrp Composites ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer

scholarly journals Recent advances in electromagnetic interference shielding properties of carbon-fibre-reinforced polymer composites—a topical review

2021 ◽  
Author(s):  
E. Mikinka ◽  
M. Siwak
Keyword(s):  
Carbon Fibre ◽  
Electromagnetic Interference ◽  
Reinforced Composites ◽  
Emi Shielding ◽  
Reinforced Polymer ◽  
Cfrp Composites ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Shielding Properties ◽  
Fibre Reinforced Composites

AbstractUsing carbon-fibre-reinforced polymer (CFRP) composites for electromagnetic interference (EMI) shielding has become a rapidly emerging field. This state-of-the-art review summarises all the recent research advancements in the field of electromagnetic shielding properties of CFRP composites, with exclusive attention paid to experimental work. It focuses on (1) important mechanisms and physical phenomena in the shielding process for anisotropic carbon-fibre composites and (2) shielding performance of CFRP materials as reported in the literature, with important performance-affecting parameters. The key properties which directly influence the shielding performance are identified, the most critical being the carbon-fibre concentration along with length for discontinuous carbon-fibre-filled polymers and the lay-up for continuous carbon-fibre-reinforced composites. The effect of adding conductive inclusions such as metal or carbon nanotubes is also reviewed. It is emphasised that processing conditions are strongly linked with the shielding properties of a composite. This is a first review, which covers all the recent advancements in the field of shielding properties of carbon-fibre-reinforced composites, with detailed analysis of factors influencing these properties and clear distinction between continuous and discontinuous reinforcement. It is shown that CFRP composites make a good candidate as an EMI shielding enclosure material.

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