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The present study is concerned with the propagation of Lamb waves in
a homogeneous isotropic thermoelastic micropolar solid with two temperatures bordered with
layers or half-spaces of inviscid liquid subjected to stress free boundary conditions. The
coupled thermoelasticity theory has been used to investigate the problem. The secular
equations for symmetric and skew-symmetric leaky and nonleaky Lamb wave modes of
propagation are derived. The phase velocity and attenuation coefficient are computed
numerically and depicted graphically. The amplitudes of stress, microrotation vector and
temperature distribution for the symmetric and skew-symmetric wave modes are computed
numerically and presented graphically. Results of some earlier workers have been deduced as
particular cases.
Keywords: micropolar, thermoelastic, secular equations, phase velocity, attenuation coefficient, symmetric and skew-symmetric amplitudes |
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