Unified methodology for characterisation of global fatigue damage evolution in adhesively bonded joints

Jaiswal Pankaj; Rahul Iyer Kumar; Wim De Waele

doi:10.3221/IGF-ESIS.53.03

Unified methodology for characterisation of global fatigue damage evolution in adhesively bonded joints

Authors

Jaiswal Pankaj Soete Laboratory, Department of Electromechanical, Systems and Metal Engineering (EMSME), Ghent University, Belgium. https://orcid.org/0000-0002-9373-4489
Rahul Iyer Kumar Soete Laboratory, Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMCS), Ghent University, Belgium. https://orcid.org/0000-0003-1241-2697
Wim De Waele Soete Laboratory, Department of Electrical Energy, Metals, Mechanical Construction and Systems (EEMMCS), Ghent University, Belgium. https://orcid.org/0000-0002-7196-3328

DOI:

https://doi.org/10.3221/IGF-ESIS.53.03

Keywords:

Single lap adhesive joint, double lap adhesive joint, Fatigue test, hysteresis

Abstract

The present work concentrates on the development of a methodology for evaluating the fatigue performance of single and double lap adhesively bonded joints subjected to constant or variable fatigue loading. Firstly, a methodology was developed to monitor the evolution of permanent deformation, stiffness degradation and hysteresis losses of single lap joints subjected to constant amplitude fatigue load. Hereto, the global deformation of the adhesive joint was monitored using the digital image correlation technique (DIC). A MATLAB code was developed to evaluate and visualize the stiffness degradation and energy dissipation (hysteresis loops) occurring during a complete fatigue test. Secondly, this methodology was optimized to evaluate the properties of double lap joints with two different bond line thicknesses. The results of both constant and variable amplitude fatigue tests show the relation between stiffness degradation and increase in hysteresis losses with increase in number of fatigue cycles or thus fatigue damage

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Published

19-07-2020

Issue

Vol. 14 No. 53 (2020): July 2020

Section

SI: 1st Benelux Network Meeting and Workshop on Damage and Fracture Mechanics

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.

Open Access Statement

Frattura ed Integrità Strutturale (Fracture and Structural Integrity, F&SI) is an open-access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles in this journal without asking prior permission from the publisher or the author. This is in accordance with the DOAI definition of open access.

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How to Cite

Unified methodology for characterisation of global fatigue damage evolution in adhesively bonded joints. (2020). Frattura Ed Integrità Strutturale, 14(53), 26-37. https://doi.org/10.3221/IGF-ESIS.53.03