An approach for predicting fatigue life of CFRP retrofitted metallic structural details

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Mohabeddine, A (Author) Other; Correia, J (Author) FEUP; Pedro Aires Montenegro (Author) FEUP; Abilio M P De Jesus (Author) FEUP; J. M. Castro (Author) FEUP; Rui Calçada (Author) FEUP; Berto, F (Author) Other

Journal

Title: International Journal of Fatigue

Vol. 154

ISSN: 0142-1123

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 0 Citations

Other information

Authenticus ID: P-00V-HBG

DOI: 10.1016/j.ijfatigue.2021.106557

Abstract (EN): This paper presents a new approach to estimate the fatigue life of metallic details retrofitted with bonded CFRP patch. Existing phenomenological and analytical methods to predict the fatigue life of metallic structural details retrofitted with bonded CFRP patch do not consider the cyclic degradation of the composite patch. As for all materials the composite patch (CFRP and adhesive) will experience degradation during fatigue cyclic loading. In this regard, a new approach that takes into account the fatigue cyclic degradation of the composite patch is proposed in this paper by introducing in the fatigue damage accumulation model of the metallic element, a cycledependent stiffness degradation parameter of the composite patch. The stiffness degradation parameter is obtained using a fatigue stiffness degradation model calibrated from experimental fatigue data of CFRP adhesively bonded double strap joints. Experimental data available in the literature of central hole aluminium plates bonded with CFRP are utilized for validation of the approach.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13