Modeling ultrasonic wave propagation in curing thermosets

Ultrasonic compression wave propagation in a curing thermoset is considered in the context of phenomenological models of viscoelasticity used as a basis to simulate observed wave attenuation and phase velocity. The anelastic solid model gives a qualitative match to experimental results which is improved through the use of the Cole-Davidson (CD) extended model. The CD model when fitted to experimental data gave a parameter which could be used to track molecular polydispersity in the curing material.