Fiber-optic monitoring focuses on bending, corrosion

02/20/2006
Long gauge-length fiber-optic sensors (FOS), effectively used in detecting pipe movement by monitoring any change in the neutral plane of the pipe from its initial reference state, can also measure any bending strains that occur due to pipe movement. Monitoring these strains and associated stresses can provide warnings of potential pipe failures.Detecting the presence of wall thinning due to general corrosion or erosion allows the operator to monitor a pipe section to ensure fitness for service. If a pipe section is known to be subject to local pitting and pinhole defects, FOS monitoring can predict, within some probability range, the presence of such defects.This approach assumes that a ...
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