Monitoring of bolt clamping force at high temperatures using metal-packaged regenerated fiber Bragg grating strain sensors

2017 ◽  
Author(s):  
Shan-Tung Tu ◽  
Yong-Kuo Huang ◽  
Yun Tu
Keyword(s):  
Fiber Bragg Grating ◽  
High Temperatures ◽  
Strain Sensors ◽  
Bragg Grating ◽  
Clamping Force

Fatigue Behavior of Metal-Packaged Regenerated Fiber Bragg Grating Strain Sensors at High Temperatures: A Preliminary Study

2019 ◽  
Vol 795 ◽  
pp. 352-357
Author(s):  
Hao Xu ◽  
Yun Tu ◽  
Ya Li Wang ◽  
Shan Tung Tu
Keyword(s):  
High Temperature ◽  
Fatigue Life ◽  
Fiber Bragg Grating ◽  
High Temperatures ◽  
Spectral Response ◽  
Fatigue Tests ◽  
Strain Sensors ◽  
Bragg Grating ◽  
Bragg Wavelength ◽  
Integrity Assessment

Regenerated Fiber Bragg grating (RFBG) sensors exhibit tremendous growth in recent years and could be widely used for measuring strains and for structural integrity assessment of components operated at high-temperature if critical issues (fatigue life, interface integrity, etc.) are addressed. For the determination of fatigue life of metal-packaged RFBG strain sensors at high temperatures, tensile fatigue tests are performed on the sensors. The preliminary results show that the sensors exhibit good linearity and repeatability, and rare sensitivity change under cyclic tension loading when exposed to constant high temperature up to 500 °C, without obvious variations in the spectral response. The rupture of the optical fibers is the major cause of fatigue failure of the sensors. The sensors subjected to lower test strain have greater fatigue life. A rapid decrease in Bragg wavelength is observed at the beginning of the fatigue tests followed by stabilization of the Bragg wavelength. These results indicate that the sensors are the promising candidates for health monitoring of structures subjected to cyclic loads at high temperatures.

Structure Optimization of Fiber Bragg Grating Strain Sensors

2012 ◽  
Vol 41 (11) ◽  
pp. 1261-1266 ◽  
Author(s):  
袁子琳 YUAN Zi-lin ◽  
龚元 GONG Yuan ◽  
马耀远 MA Yao-yuan ◽  
杜磊 DU Lei ◽  
吴宇 WU Yu ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Structure Optimization ◽  
Strain Sensors ◽  
Bragg Grating

A new interrogation system for a large number of strain sensors using fiber Bragg grating for application in residential buildings

2004 ◽  
Author(s):  
R. Garcia ◽  
S. Sales ◽  
Jose Capmany ◽  
W. Warzanskyj ◽  
David McDonald ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
Residential Buildings ◽  
Strain Sensors ◽  
Bragg Grating

Production of fiber Bragg grating and application in strain sensors system

1996 ◽  
Author(s):  
Xiangyang Wang ◽  
Ying Zha ◽  
KaiDe Zha ◽  
Yanbiao Liao
Keyword(s):  
Fiber Bragg Grating ◽  
Strain Sensors ◽  
Bragg Grating ◽  
Title Production
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