Influence of mode mixity and loading conditions on the fatigue crack growth behaviour of an epoxy adhesive

• Type: Article in International Scientific Journal
• Date: 2019

Authors

João Monteiro (Author) Other; Alireza Akhavan‐Safar (Author) Other; Ricardo Carbas (Author) Other; Eduardo Marques (Author) Other; Rakesh Goyal (Author) Other; Mohamad El‐zein (Author) Other; Lucas F. M. da Silva (Author) FEUP

Journal

Title: Fatigue and Fracture of Engineering Materials and Structures

Vol. 43 No. 2

Pages: 308-316

ISSN: 8756-758X

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 1 Citation

ISI Web of Science

Scopus - 6 Citations

Other information

Authenticus ID: P-00R-2BH

DOI: 10.1111/ffe.13125

Abstract (EN): Adhesive joints usually experience mixed mode and mostly cyclic stresses conditions during their service life. The aim of the current research is to investigate the fatigue behaviour of a structural epoxy adhesive. Pure modes I and II and mixed mode tests were carried out to study the fracture and fatigue crack growth (FCG) behaviour of the adhesive. Compliance-based beam method was considered for experimental fracture energy measurement. The effects of load level and load ratio on the mode I FCG behaviour and Paris law parameters were also investigated. Result showed that the effect of load level on fatigue crack propagation is more pronounced for lower R ratios. It was found that when the crack faces are closer during the unloading process, the difference between the R2 and Gmin/Gmax is higher. Some possibilities are the crack closure phenomenon, difficulty in measuring the Gmin, and the employed data reduction approach. © 2019 Wiley Publishing Ltd.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9