Ultrasonic characterization of the quality of an epoxy resin polymerization (original) (raw)

1999, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control

AI-generated Abstract

This work concerns monitoring the polymerization of an epoxy resin and its hardener. An ultrasonic pulse echo technique was used to monitor the attenuation, the phase velocity, and the acoustic impedance of the resin as a function of time. The first two parameters provide insights into the average state of the hardening of the resin, while the acoustic impedance indicates the state of hardening at the interface with the vessel. The experiments evaluate various proportions of hardener, identifying the most effective mixture, which aligns with the manufacturer's recommendation.