Investigation of Embedded FBG Response in Polymer Composites: Strain Transfer Mechanism and Interfacial Damage Under Multiaxial Loading
Xingchen Yu, Zihe Cao, Dongfeng Cao, Haixiao Hu, Hongda Chen, Wei Cai, Shuxin Li · 2026
Read Investigation of Embedded FBG Response in Polymer Composites: Strain Transfer Mechanism and Interfacial Damage Under Multiaxial Loading by Xingchen Yu, Zihe Cao, Dongfeng Cao, Haixiao Hu, Hongda Chen, Wei Cai, Shuxin Li (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13468072.txt.
Description
Xingchen Yu and colleagues refine in 2026 how optical fiber sensors embedded inside polymer composites report strain. Fiber Bragg gratings, short etched sections of optical fiber, are widely treated as simple one-direction strain gauges with a fixed sensitivity. Inside a real composite under multiaxial load, that assumption produces significant errors. The team built a general framework that calculates the true sensitivity from the local three-dimensional strain state.
Their model joins an analytical strain transfer principle with the optical-mechanical behavior of the grating itself. Tests under hydrostatic pressure and two-directional compression and tension confirmed the predictions. The work further shows how strongly the bonding quality between fiber and host material shapes the reading. Better strain math means embedded sensors can flag real interface damage in aircraft and wind turbine parts instead of crying wolf.
Catalog record
| CREATOR | Xingchen Yu, Zihe Cao, Dongfeng Cao, Haixiao Hu, Hongda Chen, Wei Cai, Shuxin Li |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 58 KB |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |