Loading Condition Estimation Using Long-Period Fiber Grating Array

Autor: Renato Luiz Faraco-Filho, Leonardo de Mello Honório, Andres P. Lopez-Barbero, Felipe Oliveira Barino, Alexandre Bessa dos Santos, Vinicius N. H. Silva, Deivid Campos
Rok vydání: 2021
Předmět:
Zdroj: IEEE Sensors Journal. 21:6202-6208
ISSN: 2379-9153
1530-437X
Popis: To ensure the safety and durability of structures, the constant monitoring of their structural health has been used by engineers to manage these structures. Optical fiber sensors have the advantage of long transducer-to-processing distances, the capacity to work in harsh environments, immunity to electromagnetic noise, and reliability. Therefore, optical fiber sensors are great candidates to monitor structures in-service. Here, we propose the use of a long-period fiber grating (LPG) array to monitor the loading condition of a structure. The identification method was tested in a simply-supported beam model and the estimated loading conditions were compared to the loading conditions applied to the beam. By analyzing different combinations of force intensity and position along the beam length, the results showed the force position could be estimated with 0.901% accuracy and force intensity with 2.51% accuracy using a four-LPG strain sensor array.
Databáze: OpenAIRE