CARBON FIBER COMPOSITE DAMAGE CALCULATING METHOD UNDER ACTION OF MULTIPLE CONTINUOUS LIGHTNING CURRENT COMPONENTS

摘要

A carbon fiber composite damage calculating method under the action of multiple continuous lightning current components. A dynamic impedance curve of a carbon fiber composite obtained under the action of lightning current components in multiple continuous uninterrupted time sequences and obtained under the action of non-destructive lightning current is utilized to obtain anisotropic conductivity of the carbon fiber composite by means of extrapolation under specified lightning current component parameters under a pre-designed lightning damage simulation condition as initial conditions of material conductivity in a carbon fiber composite thermoelectric coupling model, thereby better simulating the real lightning effect of the carbon fiber composite, and obtaining lightning damage of the carbon fiber composite more accurately, comprising a correlation relationship between a lightning damage area and damage depth and the lightning current component parameters; the lightning damage mechanism of the carbon fiber composite is explored, so as to lay a theoretical foundation for study of formula and process as well as performance improvement and engineering application of the carbon fiber composite.