Antiplane Stoneley waves propagating at the interface between two couple stress elastic materials

We investigate antiplane Stoneley waves, localized at the discontinuity surface between two perfectly bonded half-spaces. Both half-spaces are elastic linear isotropic and possess a microstructure that is described within theory of couple stress materials with micro-inertia. show deeply affects wave propagation, which permitted under broad conditions. This outcome stands in marked contrast to classical elasticity, where waves not supported in-plane exist only very severe conditions on material properties Besides, may propagate beyond threshold frequency (cuton), for an explicit expression provided. For given above cuton, this lends admissible range parameters allows propagation (passband). In particular, significant adjoining possible, provided high enough frequency. Therefore, micro-inertia plays important role determining features propagation. Considerations concerning existence uniqueness given: it found evanescent decaying/exploding modes also admitted. Results be especially useful when accounting non-destructive testing (NDT) seismic