Polarimetric optical fiber sensor with compensated birefringence for dynamic strain measurement

1997 ◽  
Author(s):  
Andrzej W. Domanski ◽  
Miroslaw A. Karpierz ◽  
Marek W. Sierakowski ◽  
Marcin Swillo ◽  
Tomasz R. Wolinski
Keyword(s):  
Optical Fiber ◽  
Strain Measurement ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Dynamic Strain

An Optical Fiber Sensor Based on Lateral-Offset Spliced Seven-Core Fiber for Bending and Stretching Strain Measurement

2020 ◽  
Vol 20 (11) ◽  
pp. 5915-5920
Author(s):  
Rui Zhou ◽  
Xueguang Qiao ◽  
Ruohui Wang ◽  
Fengyi Chen ◽  
Wenwen Ma
Keyword(s):  
Optical Fiber ◽  
Strain Measurement ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Core Fiber ◽  
Lateral Offset

scholarly journals Simultaneous Long- and Short-Gauge Strain Measurement in Spectral Domain by a Novel Optical Fiber Sensor Unit

2007 ◽  
Vol 19 (14) ◽  
pp. 1084-1086 ◽  
Author(s):  
Jianzhong Zhang ◽  
G. D. Peng ◽  
Libo Yuan ◽  
Weimin Sun ◽  
Wencai Jin
Keyword(s):  
Optical Fiber ◽  
Strain Measurement ◽  
Optical Fiber Sensor ◽  
Spectral Domain ◽  
Fiber Sensor ◽  
Sensor Unit

scholarly journals Intelligent Material and Fluid Systems. Strain Measurement by Curved Optical Fiber Sensor.

1997 ◽  
Vol 63 (615) ◽  
pp. 3710-3714 ◽  
Author(s):  
Akira TODOROKI ◽  
Takashi HATANAKA ◽  
Hideo KOBAYASHI ◽  
Haruo NAKAMURA ◽  
Yoshinobu SHIMAMURA
Keyword(s):  
Optical Fiber ◽  
Strain Measurement ◽  
Optical Fiber Sensor ◽  
Fiber Sensor ◽  
Fluid Systems ◽  
Intelligent Material

State sensing of composite structures with complex curved surface based on distributed optical fiber sensor

2019 ◽  
Vol 30 (13) ◽  
pp. 1951-1968 ◽  
Author(s):  
Yinan Shan ◽  
Hao Xu ◽  
Zhenhuan Zhou ◽  
Ziyi Yuan ◽  
Xinsheng Xu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Strain Measurement ◽  
Composite Structures ◽  
Damage Identification ◽  
Optical Fiber Sensor ◽  
Matrix Cracking ◽  
Curved Surface ◽  
Fiber Sensor ◽  
Distributed Optical Fiber Sensor ◽  
Distributed Optical Fiber

Composite structures with complex curved surface are typical important external structures of aircraft. Residual strain will be formed due to complex manufacturing processes, resulting in the weakness of structural strength. In addition, there are great security implications that various mechanisms used for aircraft safety may cause failures on service, such as fiber fracture, matrix cracking, stratification, and debonding. In this article, methods of structural state sensing on composite structures with complex curved surface are researched. This article established a method of strain monitoring on composite structures and strategy of damage identification based on distributed optical fiber sensors. First, strategies of high spatial resolution strain measurement are studied, and the criteria of damage identification on composite laminates based on strain information are deduced, which could be used on accurate positioning of crack tips. Finally, strain measurement and damage identification tests of composite structures with complex curved surface under uniform load condition were conducted. The results indicate that the distributed optical fiber sensor installed on the composite structures with complex curved surface can be used to measure strain precisely and identify damage in the neighborhood of fiber installation path accurately.

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