scholarly journals Optical Fiber Strain Sensors for Cable Nondestructive Evaluation

1992 ◽  
pp. 1115-1119
Author(s):  
Russell May ◽  
Brian R. Fogg ◽  
Richard O. Claus
Keyword(s):  
Optical Fiber ◽  
Nondestructive Evaluation ◽  
Strain Sensors

Characterization of Optical Fiber Bragg Gratings as Strain Sensors Considering Load Direction

2008 ◽  
Author(s):  
Michael C. Emmons ◽  
Sunny Karnani ◽  
K. P. Mohanchandra ◽  
Gregory P. Carman ◽  
Stefano Trono ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Strain Sensors ◽  
Great Promise ◽  
Fiber Direction ◽  
Load Direction ◽  
Isotropic Composite ◽  
Loading Direction

This study investigates the influence of lay-up and load direction on embedded optical fiber Bragg gratings (FBGs) used as strain sensors. FBGs have shown great promise for application to structural health monitoring with advantages of small size and cylindrical geometry readily allowing for embedment within fiber reinforced composites. Characterization of the embedded FBGs is necessary to develop a rugged and reliable strain sensor. This paper specifically explores the effects of loading direction on the FBG strain outputs. A well behaved baseline case is established with results for gratings loaded parallel to the optical fiber direction while embedded parallel to the adjacent structural fibers in a quasi-isotropic composite. Results and analysis are also presented for a case involving a composite fabricated with the optical and structural fibers parallel to each other but perpendicular to the loading direction. Extremely good results are obtained relating FBG strain measurements with that of surface mounted resistance strain gauges.

Optical-fiber strain sensors with asymmetric etched structures

1993 ◽  
Vol 32 (31) ◽  
pp. 6399 ◽  
Author(s):  
Masoud Vaziri ◽  
Chin-Lin Chen
Keyword(s):  
Optical Fiber ◽  
Strain Sensors

scholarly journals Numerical Analysis of the Effect of Microscale Components Interaction on Measurements of Fiber Optic Strain Sensors Used in Composite Structures

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Mikhail Tashkinov ◽  
Igor Shardakov
Keyword(s):  
Composite Material ◽  
Numerical Analysis ◽  
Optical Fiber ◽  
Composite Structures ◽  
Fiber Optic ◽  
Strain Tensor ◽  
Strain Sensors ◽  
Numerical Estimation ◽  
Structural Components ◽  
Fiber Optic Strain Sensors

The paper investigates the influence of structural components of a composite material on the strain values measured by using an embedded optical fiber with Bragg gratings. The effect of composite plies and intermediate epoxy layers on the transfer of deformations from the measured object to the optical fiber was studied taking into account various methods of the fiber attachment and surrounding media configurations. A numerical estimation of the effect of the longitudinal and transverse components of the strain tensor on the wavelength of the reflected spectrum is performed.

Optical fiber static strain sensors: reliability issues

2007 ◽  
Author(s):  
Indu Saxena ◽  
Kaleonui Hui
Keyword(s):  
Optical Fiber ◽  
Strain Sensors ◽  
Static Strain

J0404-5-4 Measurement of strain and deformation distribution by optical fiber strain sensors

2010 ◽  
Vol 2010.6 (0) ◽  
pp. 311-312
Author(s):  
Kazuki TACHIBANA ◽  
Hideki MURAYAMA ◽  
Takahiro IGAWA ◽  
Toshiya NAKAMURA ◽  
Jyo YOKOKAWA ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Strain Sensors ◽  
Deformation Distribution

Nondestructive evaluation of optical fiber splices and connectors

1992 ◽  
Author(s):  
T. Wei ◽  
D. J. Cotter ◽  
B. T. Devlin ◽  
W. D. Koenigsberg
Keyword(s):  
Optical Fiber ◽  
Nondestructive Evaluation
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