The Effect of Lamb Wave Interaction with Fatigue Crack in Thin Al Sheet
The phenomenon of the Lamb wave interaction with fatigue crack in Al2024-T3 sheet was investigated at cyclic loading. Mentioned effect is associated with the crack open/close that change acoustic impedance of a crack. Analytical simulation of fatigue crack opening using the generalized Dugdale’s model of a crack in thin plate shows good accordance between the intensity of ultrasonic signal and a crack opening.
Z. Tonković and M.H. Aliabadi
V. Pavelko et al., "The Effect of Lamb Wave Interaction with Fatigue Crack in Thin Al Sheet", Key Engineering Materials, Vols. 488-489, pp. 65-68, 2012