Stress Sensitivity of the T(0,1) mode velocity for cylindrical waveguides

Jabid Quiroga Mendez (1) , Octavio Andrés González Estrada (1) , Yesid Rueda Ordonez

1 GIEMA - Grupo de Investigación en Energía y Medioambiente [Bucaramanga]]

In this paper, the stress influence in the guided wave velocity of the fundamental torsional mode is presented. Two analytical models, based on the Acoustoelasticity effect, to compute the fundamental torsional mode velocity propagating in a specimen subject to an axial stress are studied. These models are obtained due to the relation between the T (0, 1) guided wave velocity and the bulk shear velocity. The analytical models to calculate the guided wave velocity are functions of the stress, second and third order elastic constants. A series of axial stress levels applied to a cylindrical waveguide is investigated with numerical simulations (Finite Elements) to estimate variations of the T (0, 1) guided wave velocity. This analysis provides a criterion to evaluate the practical implementation of a stress monitoring scheme based on velocity variations of the fundamental torsional mode.

Keywords: Torsional guided waves; Stressed cylinders; phase velocity; stress monitoring

Domains: Structural mechanics [physics.class-ph]

Jabid Quiroga Mendez, Octavio Andrés González Estrada, Yesid Rueda Ordonez. Stress Sensitivity of the T(0,1) mode velocity for cylindrical waveguides. Key Engineering Materials, 2018, 774, pp.453 - 460. ⟨10.4028/www.scientific.net/KEM.774.453⟩. ⟨hal-01879075⟩