Next Article in Journal
Fabrication and Characterization of Porous Copper with Ultrahigh Porosity
Next Article in Special Issue
Green Metalworking Fluids for Sustainable Machining Operations and Other Sustainable Systems: A Review
Previous Article in Journal
A Sharp-Interface Model of the Diffusive Phase Transformation in a Nickel-Based Superalloy
Previous Article in Special Issue
Build-Up an Economical Tool for Machining Operations Cost Estimation
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Metals
Volume 12
Issue 8
10.3390/met12081262
metals-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Delamination of Fibre Metal Laminates Due to Drilling: Experimental Study and Fracture Mechanics-Based Modelling

by
Francisco Marques
1,
Filipe G. A. Silva
2,
Tiago E. F. Silva
2,*,
Pedro A. R. Rosa
3,
António T. Marques
2,4 and
Abílio M. P. de Jesus
2,4
1
Palbit S.A., Product Development Department, 3854-908 Branca, Portugal
2
INEGI, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias 400, 4200-465 Porto, Portugal
3
IDMEC, Instituto Superior Tecnico, University of Lisbon, Avenida Rovisco Pais 1, 1049-001 Lisboa, Portugal
4
DEMEc, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias 400, 4200-465 Porto, Portugal
*
Author to whom correspondence should be addressed.
Metals 2022, 12(8), 1262; https://doi.org/10.3390/met12081262
Submission received: 30 May 2022 / Revised: 22 July 2022 / Accepted: 23 July 2022 / Published: 27 July 2022
(This article belongs to the Special Issue Machining: State-of-the-Art 2022)
Browse Figures
Versions Notes

Abstract

Fibre metal laminates (FML) are significantly adopted in the aviation industry due to their convenient combination of specific strength, impact resistance and ductility. Drilling of such materials is a regular pre-requisite which enables assembly operations, typically through rivet joining. However, the hole-making operation is of increased complexity due to the dissimilarity of the involved materials, often resulting in defects (i.e., material interface delamination), which can significantly compromise the otherwise excellent fatigue strength. This work explores the potential of three different drill geometries, operating under variable cutting speeds and feeds on CFRP-AA laminates. In addition, the usage of sacrificial back support is investigated and cutting load, surface roughness and delamination extension are examined. In order to predict delamination occurrence, ADCB tests are performed, enabling the calculation of fracture energy threshold. Drill geometry presents a very significant influence on delamination occurrence. The usage of specific step-tools with secondary cutting edge showed superior performance. Despite its simplicity, the applied critical force threshold model was able to successfully predict interface delamination with good accuracy.
Keywords: fibre metal laminates; drilling; cutting tool; modelling fibre metal laminates; drilling; cutting tool; modelling

Share and Cite

MDPI and ACS Style

Marques, F.; Silva, F.G.A.; Silva, T.E.F.; Rosa, P.A.R.; Marques, A.T.; de Jesus, A.M.P. Delamination of Fibre Metal Laminates Due to Drilling: Experimental Study and Fracture Mechanics-Based Modelling. Metals 2022, 12, 1262. https://doi.org/10.3390/met12081262

AMA Style

Marques F, Silva FGA, Silva TEF, Rosa PAR, Marques AT, de Jesus AMP. Delamination of Fibre Metal Laminates Due to Drilling: Experimental Study and Fracture Mechanics-Based Modelling. Metals. 2022; 12(8):1262. https://doi.org/10.3390/met12081262

Chicago/Turabian Style

Marques, Francisco, Filipe G. A. Silva, Tiago E. F. Silva, Pedro A. R. Rosa, António T. Marques, and Abílio M. P. de Jesus. 2022. "Delamination of Fibre Metal Laminates Due to Drilling: Experimental Study and Fracture Mechanics-Based Modelling" Metals 12, no. 8: 1262. https://doi.org/10.3390/met12081262

APA Style

Marques, F., Silva, F. G. A., Silva, T. E. F., Rosa, P. A. R., Marques, A. T., & de Jesus, A. M. P. (2022). Delamination of Fibre Metal Laminates Due to Drilling: Experimental Study and Fracture Mechanics-Based Modelling. Metals, 12(8), 1262. https://doi.org/10.3390/met12081262

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop