The Effect of Lamb Wave Interaction with Fatigue Crack in Thin Al Sheet

Key Engineering Materials 2012
Vitālijs Pavelko, Igors Pavelko, Ēriks Ozoliņš

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.

Keywords
Lamb wave, fatigue crack, interaction
DOI
10.4028/www.scientific.net/KEM.488-489.65
Hyperlink
http://www.scientific.net/KEM.488-489.65

Pavelko, V., Pavelko, I., Ozoliņš, Ē. The Effect of Lamb Wave Interaction with Fatigue Crack in Thin Al Sheet. Key Engineering Materials, 2012, Vols.488-489, pp.65-68. ISSN 1662-9795. Available from: doi:10.4028/www.scientific.net/KEM.488-489.65

Publication language
English (en)