Linear and nonlinear resonant techniques for characterizing cyclic fatigue damage in composite laminate

摘要

In the present work, the linear and nonlinear resonance experiments are performed on composite laminate beam with cyclic loading damage. The effect of different cyclic loading damage on the linear and nonlinear resonance response is analyzed. The nonlinear resonance studies the amplitude dependence of different modes. The frequency and the loss factor as function of the amplitude are determined for each cyclic loading damage. For the linear resonance, the specimens are tested at low amplitude excitation. The frequency and loss factor are evaluated for each cyclic damage. The nonlinear parameters are quantified as function of the damage. The linear parameters are compared with the nonlinear parameters.