Influence of adhesive thickness on adhesively bonded joints under fatigue loading

Zavatta, Nicola (2015) Influence of adhesive thickness on adhesively bonded joints under fatigue loading. [Laurea magistrale], Università di Bologna, Corso di Studio in Aerospace engineering / ingegneria aerospaziale [LM-DM270] - Forli'
Documenti full-text disponibili:
Documento PDF
Download (26MB) | Anteprima


Research on adhesive joints is arousing increasing interest in aerospace industry. Incomplete knowledge of fatigue in adhesively bonded joints is a major obstacle to their application. The prediction of the disbonding growth is yet an open question. This thesis researches the influence of the adhesive thickness on fatigue disbond growth. Experimental testing on specimens with different thickness has been performed. Both a conventional approach based on the strain energy release rate and an approach based on cyclic strain energy are provided. The inadequacy of the former approach is discussed. Outcomes from tests support the idea of correlating the crack growth rate to the cyclic strain energy. In order to push further the study, a 2D finite element model for the prediction of disbond growth under quasi-static loading has been developed and implemented in Abaqus. Numerical simulations have been conducted with different values of the adhesive thickness. The results from tests and simulations are in accordance with each other. According to them, no dependence of disbonding on the adhesive thickness has been evidenced.

Tipologia del documento
Tesi di laurea (Laurea magistrale)
Autore della tesi
Zavatta, Nicola
Relatore della tesi
Correlatore della tesi
Corso di studio
Ordinamento Cds
Parole chiave
Adhesive joints fatigue experimental numerical
Data di discussione della Tesi
10 Dicembre 2015

Altri metadati

Statistica sui download

Gestione del documento: Visualizza il documento