Application of the phase time and transmission coefficients to the study of transverse elastic waves in quasiperiodic systems with planar defects

We study the transverse elastic waves in quasiperiodic structures by means of the transmission/reflection phase times and the corresponding transmission/reflection coefficients. We see that these concepts are powerful tools to study multilayer systems, besides the frequency spectrum. We study how the presence of planar defects in quasiperiodic Fibonacci and Rudin–Shapiro sequences strongly modify the phase times and transmission coefficient, and not only the frequency spectrum of the systems.