Taper angle optimization of scarf repairs in carbon-epoxy laminates

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

R. D. S. G. Campilho (Author) FEUP; A. M. G. Pinto (Author) FEUP; M. F. S. F de Moura (Author) FEUP; I. R. Mendes (Author) FEUP; M. D. Banea (Author) Other; L. F. M. da Silva (Author) FEUP

Conference proceedings International

Title: Iberian Conference on Fracture and Structural Integrity 2010

Pages: 1-6

Iberian Conference on Fracture and Structural Integrity 2010

Porto, Portugal, 17 a 19 de Março de 2010

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Abstract (EN): The increasing use of Carbon-Fibre Reinforced Plastic (CFRP) laminates in high responsibility applications introduces an issue regarding their handling after damage. The availability of efficient repair methods is essential to restore the strength of the structure. The availability of accurate predictive tools for the repairs behaviour is also essential for the reduction of costs and time associated to extensive tests. This work reports on a numerical study of the tensile behaviour of three-dimensional (3D) adhesively-bonded scarf repairs in CFRP structures, using a ductile adhesive. The Finite Element (FE) analysis was performed in ABAQUS® and Cohesive Zone Models (CZM¿s) was used for the simulation of damage in the adhesive layer. A parametric study was performed on two geometric parameters. The use of overlaminating plies covering the repaired region at the outer or both repair surfaces was also tested as an attempt to increase the repairs efficiency. The results allowed the proposal of design principles for repairing CFRP structures.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6