DEVICE FOR MEASURING THE CORROSION IN A METALLIC STRUCTURE OR ONE COMPRISING AT LEAST ONE METALLIC ARMOUR, ASSOCIATED USES AND METHOD

摘要

Device for measuring the corrosion in a structure. It comprises: at least one assembly, comprising a metallic part (2), intended to be rendered integral with the structure and able to deform under the effect of corrosion and/or a thermomechanical variation, and means of transduction (4) comprising an optical fibre (3) fixed on the metallic part in a prestressed state, the means of transduction being able to modify a light propagating in the fibre under the effect of a stress applied to the fibre; means for measuring and processing the spectral responses provided by the means of transduction of said at least one assembly. The metallic part is segmented longitudinally to form an alternation of segments covered by a protective material (8) for protection against corrosion and of uncovered segments, so as to discriminate the thermomechanical influence of the structure from the mechanical effects induced by corrosion.