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

Research output: Contribution to journalArticle

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.
Original languageEnglish
Article number014401
Number of pages5
JournalOptical Engineering
Volume52
Issue number1
DOIs
Publication statusPublished - 3 Jan 2013

Bibliographical note

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", Opt. Eng. 52(1), 014401 (Jan 03, 2013).

Copyright 2013 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

DOI http://dx.doi.org/10.1117/1.OE.52.1.014401

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