TY - JOUR
T1 - Dynamic characterization of polymer optical fibers
AU - Stefani, Alessio
AU - Andresen, Sren
AU - Yuan, Wu
AU - Bang, Ole
N1 - Funding Information:
Manuscript received January 26, 2012; revised April 25, 2012; accepted July 5, 2012. Date of publication July 17, 2012; date of current version August 9, 2012. This work was supported in part by the Danish National Advanced Technology Foundation. The associate editor coordinating the review of this paper and approving it for publication was Prof. Istvan Barsony.
PY - 2012
Y1 - 2012
N2 - With the increasing interest in fiber sensors based on polymer optical fibers, it becomes fundamental to determine the real applicability and reliability of this type of sensor. The viscoelastic nature of polymers gives rise to questions about the mechanical behavior of the fibers. In particular, concerns on the response in the nonstatic regime find foundation in the viscoelasticity theory. We investigate the effects of such behavior via analysis of the mechanical properties under dynamic excitations. It is shown that for low strain (0.28%), the Young's modulus is constant for frequencies up to the limit set by our measurement system. A more detailed analysis shows that viscoelastic effects are present and that they increase with both applied strain and frequency. However, the possibility of developing sensors that measure small dynamic deformations is not compromised. A stress-relaxation experiment for larger deformations (2.8%) is also reported and a relaxation time around 5 s is measured, defining a viscosity of 20 GPa.s.
AB - With the increasing interest in fiber sensors based on polymer optical fibers, it becomes fundamental to determine the real applicability and reliability of this type of sensor. The viscoelastic nature of polymers gives rise to questions about the mechanical behavior of the fibers. In particular, concerns on the response in the nonstatic regime find foundation in the viscoelasticity theory. We investigate the effects of such behavior via analysis of the mechanical properties under dynamic excitations. It is shown that for low strain (0.28%), the Young's modulus is constant for frequencies up to the limit set by our measurement system. A more detailed analysis shows that viscoelastic effects are present and that they increase with both applied strain and frequency. However, the possibility of developing sensors that measure small dynamic deformations is not compromised. A stress-relaxation experiment for larger deformations (2.8%) is also reported and a relaxation time around 5 s is measured, defining a viscosity of 20 GPa.s.
KW - Dynamic mechanical analysis (DMA)
KW - polymer optical fibers (POFs)
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U2 - 10.1109/JSEN.2012.2208951
DO - 10.1109/JSEN.2012.2208951
M3 - Article
AN - SCOPUS:84865221311
VL - 12
SP - 3047
EP - 3053
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
SN - 1530-437X
IS - 10
M1 - 6242375
ER -