Acoustic waves generated by a laser line pulse in a transversely isotropic cylinder

Pan, Y.; Rossignol, C.; Audoin, B.
June 2003
Applied Physics Letters;6/16/2003, Vol. 82 Issue 24, p4379
Academic Journal
The acoustic field of a homogeneous and transversely isotropic cylinder generated by a laser line pulse in either ablation or thermoelastic regime is obtained theoretically. A two-dimensional Fourier transform is used to calculate the acoustic displacement at the cylinder surface. Experimental and theoretical normal displacements under either regime are obtained and compared for aluminum cylinders. Very good agreements are observed in the time, shape, and relative amplitude (i) of the cylindrical Rayleigh waves with different roundtrips and (ii) of the various longitudinal and transverse bulk waves propagating through the cylinder or reflected at the free circular surface.


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