Cable sheath aging evaluation method and related device

The invention discloses a cable sheath aging assessment method and a related device, and the method comprises the steps: cutting a to-be-assessed cable sheath to obtain a test sample, wiping the test sample through alcohol, and enabling the test sample to be still; the method comprises the following steps: testing a test sample through a RIGAKU-X-ray polycrystalline diffractometer, recording an X-ray diffraction pattern of the test sample, and obtaining two crystal diffraction peak intensities Dfi and Dsi of a diffraction curve and angles theta fi and theta si corresponding to the two peaks according to the X-ray diffraction pattern; substituting the two crystal diffraction peak intensities Dfi and Dsi and the angles theta fi and theta si corresponding to the two peaks into a diffraction evaluation factor calculation formula, and calculating to obtain a diffraction evaluation factor; and analyzing the aging state of the to-be-evaluated cable sheath based on the diffraction evaluation factor. According to the