title: Models of ultrasonic wave propagation in epoxy materials.
abstract: This paper is concerned with modeling ultrasonic wave propagation in epoxy materials to better understand NDE procedures and to provide reliable input to more complex models of guided wave propagation in layered structures. Different physical models are considered in the context of how well they simulate the (known) linear relationship between bulk wave attenuation coefficients and frequency. The identified models are then extended to simulate wave propagation in materials with mechanical properties, which vary gradually in the spatial dimension. This is achieved using electric circuit transmission line analogs to the viscoelastic mechanical system. Verifying experimental results are included.
authors: School of Electrical and Electronic Engineering, University of Nottingham, UK. Richard.Challis@nottingham.ac.uk
authors: Richard E
authors: RE
authors: Challis
authors: Fabien
authors: F
authors: Blarel
authors: Marion E
authors: ME
authors: Unwin
authors: John
authors: J
authors: Paul
authors: Xiaoning
authors: X
authors: Guo
mesh_terms: D004853:Epoxy Resins / Q000737:chemistry*; D008956:Models, Chemical; D012542:Scattering, Radiation; D014465:Ultrasonics; D014732:Vibration
chemical_list: D004853:Epoxy Resins