TY - JOUR
AU - Wang, Guanglun
AB - Brittleness of the glass core inside fiber optic sensors limits their practical usage, andtherefore they are coated with low-modulus softer protective materials. Protective coatingsabsorb a portion of the strain, and hence part of the structural strain is sensed. The studyreported here corrects for this error through development of a theoretical modelto account for the loss of strain in the protective coating of optical fibers. Themodel considers the coating as an elasto-plastic material and formulates straintransfer coefficients for elastic, elasto-plastic and strain localization phases ofcoating deformations in strain localization in concrete. The theoretical findingswere verified through laboratory experimentation. The experimental programinvolved fabrication of interferometric optical fiber sensors, embedding within mortarsamples and tensile tests in a closed-loop servo-hydraulic testing machine. Theelasto-plastic strain transfer coefficients were employed for correction of optical fibersensor data and results were compared with those of conventional extensometers.
TI - Elasto-plastic bond mechanics of embedded fiber optic sensors in concrete under uniaxial tension with strain localization
JF - Smart Materials and Structures
DO - 10.1088/0964-1726/12/6/001
DA - 2003-12-01
UR - https://www.deepdyve.com/lp/iop-publishing/elasto-plastic-bond-mechanics-of-embedded-fiber-optic-sensors-in-t9DWecKuXj
SP - 851
VL - 12
IS - 6
DP - DeepDyve
ER -