Flexible strip comprising at least one optical fibre for carrying out deformation and/or temperature measurements

摘要

The invention relates to a flexible strip (1) for a civil engineering structure, that can extend longitudinally along a longitudinal axis and comprises at least one optical fiber (20) enabling a structure to be localized and measured in terms of deformation and/or temperature, where said optical fiber (20) is essentially arranged along the longitudinal axis and is surrounded by an at least partially reinforced thermoplastic polymeric matrix of continuous reinforcement fibers (30), essentially along the longitudinal axis, and where the mass quantity of continuous reinforcement fibers extending essentially along the longitudinal axis, WCF, is higher than, or equal to, ten times the mass quantity of optical fiber(s), WOF. The invention also relates to metrology devices and associated methods.

主权项

1. A flexible strip having a longitudinal axis and intended for installation in or on a civil engineering structure, the flexible strip comprising at least one optical fibre to allow determining locations and measurements of deformation and/or measurements of temperature for the structure, said optical fibre being arranged substantially along the longitudinal axis and being surrounded by a thermoplastic polymer matrix that is at least partially reinforced, substantially along the longitudinal axis, with continuous reinforcing fibres, the amount by weight of continuous reinforcing fibres extending substantially along the longitudinal axis, WCF, being greater than or equal to ten times the amount by weight of optical fibre(s), WOF,
said flexible strip comprising at least one region where the polymer matrix comprises continuous reinforcing fibres, distributed in a substantially uniform manner, surrounded by a region of polymer matrix free of continuous reinforcing fibre, said optical fibre being arranged within said at least one region where the polymer matrix comprises continuous reinforcing fibres.