Shear stress sensing with Bragg grating-based sensors in microstructured optical fibers.
Opt Express
; 21(17): 20404-16, 2013 Aug 26.
Article
em En
| MEDLINE
| ID: mdl-24105585
ABSTRACT
We demonstrate shear stress sensing with a Bragg grating-based microstructured optical fiber sensor embedded in a single lap adhesive joint. We achieved an unprecedented shear stress sensitivity of 59.8 pm/MPa when the joint is loaded in tension. This corresponds to a shear strain sensitivity of 0.01 pm/µÎµ. We verified these results with 2D and 3D finite element modeling. A comparative FEM study with conventional highly birefringent side-hole and bow-tie fibers shows that our dedicated fiber design yields a fourfold sensitivity improvement.
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MEDLINE
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En
Ano de publicação:
2013
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Article