Development of repair solution for fatigue cracks using self-prestressing Fe-SMA/CFRP bonded patches

descriptionPublicationkeyboard_double_arrow_right Article , Conference object , Part of book or chapter of book 01 Jan 2023Embargo end date: 06 Jan 2026Publisher:Zenodo

Authors: Wang, Sizhe; Su, Qingtian; Xu, Jiang; Motavalli, Masoud; Ghafoori, Elyas;

doi: 10.5281/zenodo.8092226 , 10.5281/zenodo.8092225 , 10.15488/20310

Development of repair solution for fatigue cracks using self-prestressing Fe-SMA/CFRP bonded patches

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Abstract

A repair solution for fatigue cracks in steel structures using adhesively bonded iron-based shape memory alloy (Fe-SMA) strips and carbon fiber reinforced polymer (CFRP) sheets (Fe-SMA/CFRP bonded patches) was developed. The patches can self-prestress through an activation process (a heating and cooling process). An experimental study was conducted, wherein cracked steel plates were repaired with the Fe-SMA/CFRP bonded patches, and fatigue tests were performed. Test results showed that the Fe-SMA/CFRP bonded patches prolonged the fatigue life of cracked steel plates by more than 5 times, and in some cases a complete crack arrest was achieved.

Paper 204

Related Organizations

Tongji University
China (People's Republic of)
Swiss Federal Laboratories for Materials Science and Technology
Switzerland
University of Hannover
Germany

Keywords

690, Konferenzschrift

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