Monitoring static shape memory polymers using a fiber Bragg grating as a vector-bending sensor

Peng Li; Zhijun Yan; Kaiming Zhou; Lin Zhang; Jinsong Leng

doi:10.1117/1.OE.52.1.014401

3 January 2013 Monitoring static shape memory polymers using a fiber Bragg grating as a vector-bending sensor

Peng Li, Zhijun Yan, Kaiming Zhou, Lin Zhang, Jinsong Leng

Author Affiliations +

Optical Engineering, Vol. 52, Issue 1, 014401 (January 2013). https://doi.org/10.1117/1.OE.52.1.014401

Abstract

We propose and demonstrate a technique for monitoring the recovery deformation of the shape-memory polymers (SMP) using a surface-attached fiber Bragg grating (FBG) as a vector-bending sensor. The proposed sensing scheme could monitor the pure bending deformation for the SMP sample. When the SMP sample undergoes concave or convex bending, the resonance wavelength of the FBG will have red-shift or blue-shift according to the tensile or compressive stress gradient along the FBG. As the results show, the bending sensitivity is around 4.07 nm/cm −1 . The experimental results clearly indicate that the deformation of such an SMP sample can be effectively monitored by the attached FBG not just for the bending curvature but also the bending direction.

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Peng Li, Zhijun Yan, Kaiming Zhou, Lin Zhang, and Jinsong Leng "Monitoring static shape memory polymers using a fiber Bragg grating as a vector-bending sensor," Optical Engineering 52(1), 014401 (3 January 2013). https://doi.org/10.1117/1.OE.52.1.014401

Published: 3 January 2013

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