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- W2065862146 abstract "An elastic hollow cylinder in water is coated with a viscoelastic and sound-absorbing material layer. We previously found [Proc. III US/FRG Hydroacoustics Symposium, Munich, May 1975. Vol. 1. Pt. 2, 4–31, and J. Acoust. Soc. Am. 58, S101 (A) (1975)] the classical Rayleigh series for the pressure field in the water for the case of plane-wave insonification at beam aspect, from which a series expression for the backscattering cross section was derived. We now present the numerical evaluation of these results at relatively low frequencies (ka ⩽ 20) in a lengthy and computerized parametric study. Using two size cylinders of interest, we analyze the effect of varying the coating viscosity, and the relative shell and coating thicknesses. The way in which the peaks in the oscillating cross section are shifted in frequency or damped-out in amplitude by changing geometries or materials, is useful to compute the coating effectiveness in reducing the target strength of the bare structure, a question of interest for design purposes. The high-frequency calculations remain to be performed using the Watson-Sommerfeld method." @default.
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- W2065862146 date "1976-11-01" @default.
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- W2065862146 title "Monostatic cross section of a coated submerged hollow cylinder" @default.
- W2065862146 doi "https://doi.org/10.1121/1.2003408" @default.
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