Random multi-phase medium model and its application in analysis of ultrasonic propagation characteristics for AlSi-polyester abradable seal coating

Ultrasonic nondestructive characterization of multi-phase heterogeneous coatings is challenging due to the complex elastic spatial distribution. In this paper, a two-dimensional Random Multi-phase Medium Model (RMMM) for heterogeneous coatings containing solid-solid-gas three phases is developed, which is able to simulate the elastic spatial distribution of coatings by taking into account material microstructure. This model is then applied to...