JIA Xiang-fei, LIN Yu-chi, HUANG Yin-guo, et al. Research on large strain measurement based on plastic optical fiber[J]. 2010, 29(12): 22-24. DOI: 10.13873/j.1000-97872010.12.014.
The relationship between bend losses in plastic optical fibers and bend radius is analyzed theoretically.The mathematical model of large strain measuring based on plastic optical fibers is deduced and a corresponding measurement system is established.Through experimental research
the measured values are verified coincide well with the model.Experimental results show that the strain measurement range can be up to 8 % and the system has advantages of high sensitivity and good repeatability.