Connecting rod deformation detection method based on fiber grating sensor

The invention discloses a connecting rod deformation detection method based on a fiber grating sensor. Comprising the steps of establishing a connecting rod finite element model, performing finite element analysis, designing an arrangement scheme of fiber grating sensors, calibrating two types of fiber grating sensors, performing experiment preparation on a to-be-detected connecting rod, performing loading experiment on the to-be-detected connecting rod, calculating deformation parameters, reconstructing structural units of the connecting rod, reconstructing an overall structure of the connecting rod, comparing deformation detection results and the like. The device has the beneficial effects that the fiber grating sensor can be used for carrying out integral deformation detection on a thin-wall annular structure and a long rod piece structure of the connecting rod at the same time; the detection result can be output more visually and accurately, and a new feasible method is provided for accurate detection of