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Updated: Jun 5, 2026

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
08:23

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

Distributed strain measurements using fiber Bragg gratings in small-diameter optical fiber and low-coherence

Dragan Coric1, Marco Lai, John Botsis

  • 1Ecole Polytechnique Fédérale de Lausanne, EPFL, Laboratoire de Mécanique Appliquée et d’Analyse de Fiabilité CH-1015 Lausanne, Switzerland.

Optics Express
|December 18, 2010
PubMed

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Measurements of Strain01:27

Measurements of Strain

Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain gauge...