Abstract
In this study, the propagation of guided waves in a 0.9m Aluminium Conductor Steel Reinforced (ACSR) cable was investigated employing two longitudinal piezoelectric transducers attached to the ends of the cable. Longitudinal L(0,1) and flexural F(1,1) modes were identified at 500 kHz via dispersion curves and the wavelet transform. Based on inter-wire coupling, a 3-D FEM analysis was performed using a simplified model comprised of two rods made of aluminium and steel. Artificial damage was made by gradually increasing cut depth, in the middle of the cable, from 1mm to 9mm. The attained experimental results suggest a mode conversion from F(1,1) to L(0,1) due to loosed friction contact among individual wires corroborating the results yielded by the FEM analysis.
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