Abstract
In this paper, the time reversal method in an anisotropic elastic solid is theoretically studied for the first time. The transversely isotropic anisotropic medium (6mm crystal structure) is modeled as the anisotropic elastic solid. A unidirectional glass-reinforced epoxy-fiber is chosen as the material of the 6mm anisotropic medium. The time reversal acoustic field is numerically investigated by the ray approximation method. The focused acoustic field has different characteristics in different directions. The focused field is also symmetrical about the principal axes. It is found that the width of the principal lobe of the focused acoustic field reaches the minimum in the maximum group velocity direction and reaches the maximum in the minimum group velocity direction. The relation of the time reversal acoustic field to the parameters of the anisotropic medium is also studied in detail.
Published Version
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