Mechanical Behavior of Coatings for Optical Fiber Sensors Embedded in Concrete
埋入混凝土的光纤传感器包层力学特性研究

The mechanical behavior of coatings for optical fiber sensors embedded inconcrete iS studied with analytical methods. When external load iS applied in parallel with theoptical fiber,it is shown that strain concentrations near an embedded optical fiber are highlydependent on the thiCkness and material propertics of the coatins. It is alSo Shown that, for agiven concrete,there exsists an optimum combination of material and thickness Of the coating.Under such combination,the Stress concentrations in the optical fiber,in its coating and in theconcrete neighboring to the embedded fiber can be eliminated. ThiS is Of utmostt imPOrtant for theoperation of OPtical fiber sensors.