Nonlinear and Timedependant Optomechanical Transformation Equation for FBG Strain Sensors

doi:10.3969/j.issn.0253-374x.2011.01.010

Home > Archive>Volume 39, Issue 1, 2011 >53-56. DOI:10.3969/j.issn.0253-374x.2011.01.010

Nonlinear and Timedependant Optomechanical Transformation Equation for FBG Strain Sensors
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                        10.3969/j.issn.0253-374x.2011.01.010
                    
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                        WU YonghongWU Yonghong
Department of Construction Engineering,College of Civil Engineering,Tongji University,Shanghai 200092,China
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SHAO ChangjiangSHAO Changjiang
Department of Construction Engineering,College of Civil Engineering,Tongji University,Shanghai 200092,China
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QU WenjunQU Wenjun
Department of Construction Engineering,College of Civil Engineering,Tongji University,Shanghai 200092,China
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ZHOU WeiZHOU Wei
Department of Construction Engineering,College of Civil Engineering,Tongji University,Shanghai 200092,China
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Abstract:

Based on the Basic fiber optical Bragg grating(FBG)strain sensing principle and the basic theories of elastoplastic and viscoelastic mechanics,a nonlinear and timedependant optomechanical transformation equation for FBG sensors was established,into which effects of both plastic and viscoelastic mechanic behaviors of a sensor were incorporated.

Key words:fibre optics; opticalmechanical transformation; FBG sensors; nonlinear and timedependant effect

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WU Yonghong, SHAO Changjiang, QU Wenjun, ZHOU Wei. Nonlinear and Timedependant Optomechanical Transformation Equation for FBG Strain Sensors[J].同济大学学报(自然科学版),2011,39(1):53~56

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Received:August 23,2009
Revised:December 02,2010
Adopted:April 07,2010
Online: February 22,2011
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