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A platform for research: civil engineering, architecture and urbanism
Experimental evaluation and modelling of drilling responses in CFRP/honeycomb composite sandwich panels
https://orcid.org/0000-0002-9332-6098
https://orcid.org/0000-0001-5651-8560
Abstract This work investigates the drilling responses of carbon fibre reinforced plastic (CFRP) composite sandwich panels (CSPs). First, the effects of drill geometries, feed rates and support conditions on the peak thrust force and delamination area of the CSPs with different core thicknesses were experimentally studied. Then, finite element analysis (FEA) was performed to model the intra-laminar damage and inter-laminar delamination of the CFRP face sheets, as well as the failure of the adhesive and honeycomb core. The FEA models were validated by experiments in terms of drilling responses and damage behaviours. The results show that the maximum errors of the peak thrust force in between the FEA-predicted and experimental results are 12.5% and 7.5% for the CFRP and CSPs, respectively. Finally, the damage mechanism analysis and parametric study for the CSPs under drilling were examined.
Highlights An FE model is presented to predict drilling response of CFRP sandwich panel. Drilling quality increases with decreasing the pre-drilled hole diameter. Dagger drill results in lower thrust forces and less delamination than twist drill. CFRP delamination and core damage by dagger reduce with the rise of core thickness.
Experimental evaluation and modelling of drilling responses in CFRP/honeycomb composite sandwich panels
https://orcid.org/0000-0002-9332-6098
https://orcid.org/0000-0001-5651-8560
Abstract This work investigates the drilling responses of carbon fibre reinforced plastic (CFRP) composite sandwich panels (CSPs). First, the effects of drill geometries, feed rates and support conditions on the peak thrust force and delamination area of the CSPs with different core thicknesses were experimentally studied. Then, finite element analysis (FEA) was performed to model the intra-laminar damage and inter-laminar delamination of the CFRP face sheets, as well as the failure of the adhesive and honeycomb core. The FEA models were validated by experiments in terms of drilling responses and damage behaviours. The results show that the maximum errors of the peak thrust force in between the FEA-predicted and experimental results are 12.5% and 7.5% for the CFRP and CSPs, respectively. Finally, the damage mechanism analysis and parametric study for the CSPs under drilling were examined.
Highlights An FE model is presented to predict drilling response of CFRP sandwich panel. Drilling quality increases with decreasing the pre-drilled hole diameter. Dagger drill results in lower thrust forces and less delamination than twist drill. CFRP delamination and core damage by dagger reduce with the rise of core thickness.
Experimental evaluation and modelling of drilling responses in CFRP/honeycomb composite sandwich panels
https://orcid.org/0000-0002-9332-6098
https://orcid.org/0000-0001-5651-8560
Abstract This work investigates the drilling responses of carbon fibre reinforced plastic (CFRP) composite sandwich panels (CSPs). First, the effects of drill geometries, feed rates and support conditions on the peak thrust force and delamination area of the CSPs with different core thicknesses were experimentally studied. Then, finite element analysis (FEA) was performed to model the intra-laminar damage and inter-laminar delamination of the CFRP face sheets, as well as the failure of the adhesive and honeycomb core. The FEA models were validated by experiments in terms of drilling responses and damage behaviours. The results show that the maximum errors of the peak thrust force in between the FEA-predicted and experimental results are 12.5% and 7.5% for the CFRP and CSPs, respectively. Finally, the damage mechanism analysis and parametric study for the CSPs under drilling were examined.
Highlights An FE model is presented to predict drilling response of CFRP sandwich panel. Drilling quality increases with decreasing the pre-drilled hole diameter. Dagger drill results in lower thrust forces and less delamination than twist drill. CFRP delamination and core damage by dagger reduce with the rise of core thickness.
Experimental evaluation and modelling of drilling responses in CFRP/honeycomb composite sandwich panels
Yang, Bin (author) / Wang, Hongjian (author) / Chen, Yuan (author) / Fu, Kunkun (author) / Li, Yan (author)
Thin-Walled Structures ; 169
2021-08-09
Article (Journal)
Electronic Resource
English
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