3 January 2013 Monitoring static shape memory polymers using a fiber Bragg grating as a vector-bending sensor
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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.
© 2013 Society of Photo-Optical Instrumentation Engineers (SPIE)
Peng Li, Peng Li, Zhijun Yan, Zhijun Yan, Kaiming Zhou, Kaiming Zhou, Lin Zhang, Lin Zhang, Jinsong Leng, 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 . Submission:
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