Fatigue Crack Open Effect to Lamb Waves in Thin Al Sheet

International Review of Aerospace Engineering (I.RE.AS.E) 2011
Vitālijs Pavelko, Helge Pffeifer, Martine Wevers

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. The perspective of application for structural health monitoring (SHM) of aircraft.

Atslēgas vārdi
Fatigue Crack, Lamb Wave, Aircraft, Structural Health Monitoring
Hipersaite
http://www.praiseworthyprize.org/latest_issues/IREASE-latest/IREASE_vol_4_n_3.html#Fatigue_Crack_Open_Effect_to_Lamb_Waves_in_Thin_Al_Sheet

Pavelko, V., Pffeifer, H., Wevers, M. Fatigue Crack Open Effect to Lamb Waves in Thin Al Sheet. International Review of Aerospace Engineering (I.RE.AS.E), 2011, Vol. 4, No. 3, 173.-179.lpp. ISSN 1973-7459. e-ISSN 1973-7440.

Publikācijas valoda
English (en)