A wide-range large-strain monitoring and stress inversion method based on SERS ratio mapping
By preparing a BSPP-Au NPs monolayer film on a PDMS substrate and utilizing SERS ratio mapping technology, the problem of limited range of optical strain sensors was solved, realizing wide-range large strain monitoring and stress inversion, which is suitable for health monitoring of deformable structures such as wind turbine blade protective films.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HARBIN INST OF TECH
- Filing Date
- 2026-04-20
- Publication Date
- 2026-07-17
AI Technical Summary
Existing optical strain sensors have limited ranges, making it difficult to meet the stable and reliable monitoring requirements of deformable structures such as wind turbine blade protective films under large strain conditions.
By employing a SERS ratio mapping method, a linear relationship between strain ε and SERS signal parameter Hε was established on a PDMS substrate through the fabrication of a BSPP-Au NPs monolayer film, enabling wide-range large strain monitoring. Stress inversion was then performed in conjunction with a standardized stress-strain curve.
It achieves high linearity and high stability strain detection in the range of 0-32%, can accurately reflect the stress state of deformable materials under actual working conditions, and provides a reliable health monitoring and assessment method.
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Figure CN122408643A_ABST