Fiber optic strain, temperature and shape sensing via OFDR for ground, air and space applications

被引：15
|
作者：
Bos, Joseph [1 ]
Klein, Justin [1 ]
Froggatt, Mark [1 ]
Sanborn, Eric [1 ]
Gifford, Dawn [1 ]
机构：
[1] Luna Innovat, Blacksburg, VA 24073 USA
来源：
NANOPHOTONICS AND MACROPHOTONICS FOR SPACE ENVIRONMENTS VII | 2013年 / 8876卷
关键词：
Optical fiber sensing; distributed sensing; shape sensing; temperature sensing; optical frequency domain reflectometry; Rayleigh scatter; structural health monitoring;
D O I：
10.1117/12.2025711
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Optical Frequency Domain Reflectometry (OFDR) is used to interrogate fiber sensors adhered to various structures. Temperatures in excess of 1000 degrees C are observed on a thermal-barrier coated stainless steel test plate as it is exposed to a high-temperature torch. The surface temperature distribution is mapped with 5 mm spatial resolution at 100 Hz, revealing large spatial and temporal thermal gradients at coating defect locations. Results and response times are compared with conventional K type thermocouples. Also presented in this work, are real-time position, shape and twist measurements of a simple structure as it is subjected to various loads.
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页数：15
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