An analytical model of cylindrical Rayleigh waves generated by a laser source is developed that predicts a previously unknown maximum in the Rayleigh wave velocity. The maximum value CR max of the cylindrical Rayleigh wave velocity CR occurs at a critical small value of ωR/CR where ω is the angular frequency and R is the radius of the cylinder. CR max is smaller in magnitude than the longitudinal velocity but larger than the shear velocity in the material. Experimental data, generated by a cylindrically focused laser source, confirm the theoretical predictions for aluminum cylinders.
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Wu et al. (2003) studied this question.
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