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Reza Beygi

Reza Beygi

Academic rank: Associate Professor
ORCID: https://orcid.org/0000-0002-0110-1642
Education: PhD.
ScopusId: 36337544600
Faculty: Engineering
Address: Arak University
Phone: 086-32625824

Research

Title
Impact fatigue life improvement of bonded structures using the bi-adhesive technique
Type
JournalPaper
Keywords
bi-adhesive joints, durability, fatigue life, impact fatigue, J-N methodology
Year
2022
Journal Fatigue and fracture of engineering materials and structures
DOI
Researchers Ghasem Eisaabadi bozcheloei ، Reza Beygi ، Lucas da Silva ، Shahin Jalali ، Alireza Akhavan Saffar

Abstract

One of the most efficient methods of improving the strength of adhesive bonds is the bi-adhesive technique. The main aim of the current study is to investigate the fatigue life of bi-adhesive joints under cyclic impact loads based on the J-N (impact energy vs. fatigue life) methodology. To achieve this, single lap joints were subjected to cyclic low energy impacts. The J-N curves were constructed using the experimental data considering Basquin's equation. According to the results, the durability of the joints against impact fatigue loads can be improved significantly (up to 17 times higher for the tested joints) using the bi-adhesive technique. The results also showed that the impact fatigue life is very sensitive to the length ratio of the ductile to the brittle adhesives in bi-adhesive joints. It was found that the total absorbed energy of the joints increases significantly by the reduction of the impact energy.