FBG-Based Sensitivity Structure Based on Flexure Hinge and Its Application for Pipeline Pressure Detection.

ABSTRACT: With the widespread application of pipelines in engineering, more and more accidents occur because of pipeline leakage. Therefore, it is particularly important to continuously monitor the pipeline pressure. In this study, a non-intrusive and high-sensitivity structure based on FBG (Fiber Bragg grating) sensor is proposed. Firstly, the basic sensing theory of FBG and the state of a pipeline wall under inner pressure are analyzed. Then, structural sensitivity is deduced based on the flexure hinge and mechanical lever. Subsequently, finite element simulation for the whole sensitization structure is carried out, and optimal parameters are determined to obtain the maximum sensitivity. Finally, laboratory experiments are conducted to verify the function of the designed sensitivity structure. The

SUBMITTER: Liu Z 

PROVIDER: S-EPMC9413821 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature