A dual measurement method of strain and temperature

Hai-li Jiang , Wei-min Sun , Cong Zhang , Zhi-hai Liu , Fu-qiang Jiang , Yang Zhang

Journal of Marine Science and Application ›› 2007, Vol. 6 ›› Issue (1) : 63 -68.

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Journal of Marine Science and Application ›› 2007, Vol. 6 ›› Issue (1) : 63 -68. DOI: 10.1007/s11804-007-6046-0
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A dual measurement method of strain and temperature

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Abstract

With the rapid development of China’s foreign trade, the coastal and inland waterway transport has been increased rapidly. The potential market for marine engines is more and more obvious. The measurement of the engine temperature and strain becomes very important. The fluorescence fiber sensors are broadly used to measure temperature, concentration, and pH value, etc. The fluorescence sensing systems are based on different principles, namely fluorescence intensity, fluorescence intensity ratio, and fluorescence lifetime. The fluorescence lifetime is an effective parameter for sensing purpose, because it is independent of the intensity of the pumping source and does not need expensive narrow-band filters. An experiment system has been established, in which some samples were produced to measure the fluorescence lifetime and temperature characteristics and the relationship of the strain and temperature versus the fluorescence lifetime was achieved at the same time. The experiment result was fitted and analyzed. The test results show that the fluorescence lifetime decreases with the increasing of temperature. The change of fluorescence lifetime with the strain is inconspicuous comparing to that with the temperature.

Keywords

fluorescence lifetime / fluorescence fiber / simultaneous measurement / temperature / strain

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Hai-li Jiang, Wei-min Sun, Cong Zhang, Zhi-hai Liu, Fu-qiang Jiang, Yang Zhang. A dual measurement method of strain and temperature. Journal of Marine Science and Application, 2007, 6(1): 63-68 DOI:10.1007/s11804-007-6046-0

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