A comparison of some statistical properties of the responses of aluminium alloy and cfrp plates to acoustic excitation

Abstract An experimental study is described which concerns the strain response of aluminium alloy and cfrp plates to acoustic excitation in the frequency range 80 Hz to 800 Hz at levels up to 155 dB. The spectral density, probability distribution, peak and zero count properties of the induced strains are described. Comparisons between the behaviour of the two types of structures are made and some observations are made concerning the nonlinear dynamic response of the cfrp plate.