The invention provides an intelligent detection method and
system for the tensile property of a plastic cable tie. Gradient temperature rise control is executed through the carbon
fiber heating tube array, microscopic deformation fluctuation characteristics are captured through the double-
grating displacement sensor, and temperature field distribution is collected through the
infrared thermal imager. Establishing dynamic correlation between deformation and a temperature field to generate a three-dimensional space-time atlas, identifying a migration path of a thermal aggregation area, recording a standard path, and calculating a thermal anomaly coefficient in combination with
pressure data; analyzing temperature conduction
hysteresis to generate a heat conduction parameter, and dynamically correcting a threshold value by cross-
modal correlation with an abnormal coefficient; a structure
degradation index is generated based on the migration path, mapping between the structure
degradation index and a temperature field is established to generate a
thermal damage compensation coefficient, an abnormal coefficient is calibrated accordingly, and grading early warning is triggered in combination with the
path deviation degree. According to the technical scheme provided by the invention, multi-scale damage evaluation from thermodynamic associated
data acquisition to molecular chain fracture inversion is realized, and the high-temperature tensile failure critical point is accurately pre-judged through a dynamic calibration early warning mechanism.