Determination of cantilever plate shapes using wavelength division multiplexed fiber Bragg grating sensors and a least-squares strain-fitting algorithm

R T Jones; D G Bellemore; T A BerkoffJ S SirkisM A DavisM A PutnamE J FriebeleA D Kersey

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Determination of cantilever plate shapes using wavelength division multiplexed fiber Bragg grating sensors and a least-squares strain-fitting algorithm

机译：Determination of cantilever plate shapes using wavelength division multiplexed fiber Bragg grating sensors and a least-squares strain-fitting algorithm

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An algorithm has been developed to determine the full deformation field of a cantilever honeycomb plate under arbitrary loading conditions. The algorithm utilizes strain information from a set of sixteen fiber Bragg grating sensors mounted on the plate so that all sensors measure strains along the clamped-free direction. The sensors were interrogated using a wavelength division multiplexing scheme. A two-dimensional polynomial function which represents the strain field was created using a least-squares surface-fitting algorithm. This function was integrated twice with the known boundary conditions applied to yield the deformation field for the plate. Finite-element comparisons were performed to test the accuracy of the strain-displacement algorithm. Single-point loading tests were also experimentally performed to further verify the accuracy of the algorithm.

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《smart materials and structures》 |1998年第2期|178-188|共页
作者
R T Jones; D G Bellemore; T A BerkoffJ S SirkisM A DavisM A PutnamE J FriebeleA D Kersey;
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作者单位

Optical Sciences Division, Naval Research Laboratory, Washington, DC 20375, USA;

Smart Materials and Structures Research Center, University of Maryland, College Park, MD 20742, USA;

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Determination of cantilever plate shapes using wavelength division multiplexed fiber Bragg grating sensors and a least-squares strain-fitting algorithm

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