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Proceedings Paper

Study on strain transfer of polymer optical fiber grating sensors
Author(s): Xinlong Chang; Ming Li
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Paper Abstract

A mechanical model of the polymer optical fiber grating (POFBG) sensor was proposed to determine the strain transfer relationship between the POFBG sensor and the host material. The interface strain transferring mechanism was analyzed among the core of optical fiber, the cladding of optical fiber, the adhesive interlayer and the host material. Because the POFBG sensor and the adhesive interlayer are macromolecular polymer, the model of multilayer interface strain transfer was established based on the linear viscoelastic theory. The strain transfer rate (STR) and the average strain transfer rate (ASTR) were inferred. STR and ASTR of multi-layer mediums between the POFBG sensor and the host material were also analyzed in a similar way. The results show that the measured strain by the POFBG sensor is lower than the actual strain of the host material. STR is lower with steady-state response than transient response. The study provides the theoretical reference of development and engineering application of embedded POFBG sensors for health monitoring.

Paper Details

Date Published: 24 August 2009
PDF: 10 pages
Proc. SPIE 7381, International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors, 73811P (24 August 2009); doi: 10.1117/12.834968
Show Author Affiliations
Xinlong Chang, Xi'an Research Institute of High-tech (China)
Ming Li, Xi'an Research Institute of High-tech (China)


Published in SPIE Proceedings Vol. 7381:
International Symposium on Photoelectronic Detection and Imaging 2009: Material and Device Technology for Sensors
Xu-yuan Chen; Yue-lin Wang; Zhi-ping Zhou; Qing-kang Wang, Editor(s)

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