Fatigue Crack Open Effect to Lamb Wave in Thin Al Sheet

Proceedings of the Tenth International Conference "AVIA-2011" 2011
Vitālijs Pavelko, Igors Pavelko, Ēriks Ozoliņš, Sergejs Kuzņecovs

The phenomenon of the Lamb wave interaction with fatigue crack in Al2024-T3 sheet was in-vestigated 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.

Keywords
Lamb wave, fatigue crack, crack opening

Pavelko, V., Pavelko, I., Ozoliņš, Ē., Kuzņecovs, S. Fatigue Crack Open Effect to Lamb Wave in Thin Al Sheet. In: Proceedings of the Tenth International Conference "AVIA-2011", Ukraine, Kyiv, 19-21 April, 2011. Kyiv: National Aviation University, 2011, pp.14.32-14.35. ISBN .

Publication language
English (en)