Published June 28, 2023
| Version v1
Conference paper
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Development of repair solution for fatigue cracks using self-prestressing Fe-SMA/CFRP bonded patches
Authors/Creators
- 1. Swiss Federal Laboratories for Materials Science and Technology, Switzerland
- 2. Tongji University, China
- 3. Leibniz University of Hannover, Germany
Description
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.
Notes
Paper 204
Files
CICE_2023_paper_204.pdf
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