Real time load monitoring technology of wing structure based on Fiber Bragg grating

A fiber Bragg grating strain transducer network was designed to implement the real-time load monitoring of the aircraft wing structure. A fiber grating sensor network was reasonably applied on spar of wing structure to achieve load monitor. The experimental investigation was performed on spar of wing structure with fiber grating monitoring structural strain. Four loading modes were designed to investigate the relationship model between strain and loading of I-beam spar. According to the superposition principle of structural mechanics, the relationship matrix between the strain and the loading on the wing structure spar were established.