Reflection and transmission of elastic waves through a couple-stress elastic slab sandwiched between two half-spaces

Wave transmission and reflection analysis through complex media based on the second strain gradient theory

“…Meanwhile, although there is very seldom literature contributing to the wave scattering through the non-classical media, we can still find some interesting results to compare with, for example, the reflection and transmission coefficients through a couple-stress elastic slab changing with the incident wave angle and the dimensional thickness in [20], the reflection of elastic waves in the functionally graded piezoelectric microstructures based on modified CS theory [21]. Some of these results can be used to compared qualitatively, for example in Figure 6 [21] when the incident wave angle is 0 the results are in a similar form with the results in section 5.1, and the feature that reflection and transmission coefficients are affected by the dimensionless thickness can also be confirmed in later numerical results.…”

“…Very seldom research was conducted on the wave conversion and scattering at coupling regions involving nonclassical waveguides. Wang et al did some research on this issue [20], wave scattering through a couple-stress slab sandwiched between two elastic half-spaces was investigated based on the couple stress (CS) theory, the reflection and transmission behaviors are proven to be affected by the couple-stress. Upon this, Liu et al investigated the reflection of elastic waves through the functionally graded piezoelectric microstructures [21].…”

Microstructured induced band pattern in Love wave propagation for novel nondestructive testing (NDT) procedures

“…Li et al (2018) study reflection and transmission of plane strain thermoelastic coupled waves in couple stress materials without micro-inertia. Wang et al (2017) investigate plane strain reflection and transmission of elastic waves impinging onto a layer glued in between two couple stress half-spaces disregarding rotational inertia. Results are very involved and the limiting case of classical elastic half-spaces is also addressed.…”

A Theoretical Investigation of Channel Wave Multipath Propagation in a Coal Seam

“…According to the weak elastic wave signal detected by the receiver, the detection system records the geological structure of the coal seam through signal processing and analysis [3,4]. When elastic waves propagate in the formation, the elastic wave reflection [5], refraction [6], and transmission [7] characteristics make the composition of the elastic wave very complicated, resulting in a multipath effect [8]. Under the influence of this effect, the signal is transmitted via various paths to reach the receiving end.…”