Abstract
Functionally graded material (FGM) structures inevitably incur local damage during long-term operation processes. Therefore, studies on transient wave propagation characteristics in damaged FGMs with different components can provide a theoretical basis for the nondestructive testing of structures. In this paper, transient wave propagation in damaged FGM structures with different components is analyzed by the finite volume method. Results show that different material components, damage degree, damage starting position, and length of damage zone significantly affect received first wave amplitude and arrival time of the first wave.
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