Research on concrete cracks based on damage theory and FBG sensing technology

Wei Zhu; Aiqing Chen; Mingxuan Wu; Weili Wu

doi:10.1117/12.3029375

6 May 2024 Research on concrete cracks based on damage theory and FBG sensing technology

Wei Zhu, Aiqing Chen, Mingxuan Wu, Weili Wu

Proceedings Volume 13107, Fourth International Conference on Sensors and Information Technology (ICSI 2024); 131071F (2024) https://doi.org/10.1117/12.3029375
Event: Fourth International Conference on Sensors and Information Technology (ICSI 2024), 2024, Xiamen, China

Abstract

The damage factor, a crucial parameter in assessing the integrity of concrete structures, is determined and validated using the constitutive relationship of concrete and the principle of energy equivalence. The theoretical relationship between Fiber Bragg Grating (FBG) strain sensors and crack monitoring in concrete structures is derived and verified based on the principle of fiber optic sensing. Experimental findings demonstrate that FBG sensors can accurately detect and track crack formation and propagation. The approximate quantitative relationship obtained through theoretical derivation and physical experimentation falls within the acceptable error range for practical engineering applications. Finally, a crack development model for concrete structures is established, and the plastic damage model is employed to derive a dimensionless damage value that can be represented by the measurable crack width.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Wei Zhu, Aiqing Chen, Mingxuan Wu, and Weili Wu "Research on concrete cracks based on damage theory and FBG sensing technology", Proc. SPIE 13107, Fourth International Conference on Sensors and Information Technology (ICSI 2024), 131071F (6 May 2024); https://doi.org/10.1117/12.3029375

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