Influence of Thermal Aging on the Damping Properties of an Acrylic-Cored Laminated Steel

Abstract

The concern about the thermal stability of polymer materials has led to the studies of the damping properties of polymer-cored laminated steels used for reducing vehicle structure-borne noise and engine noise. While there have been a number of studies concerning the thermal stability of polymer-cored vibration damping laminated steels, very little information is available concerning factors that influence the damping properties of laminated steels after paint bake cycle [Electrophoretic Priming Operation (ELPO) baking oven]. In this paper, results from damping property measurements of an acrylic-cored laminated steel aged for varying times at 180°C (ELPO oven) are presented, and factors contributing to their property degradation are identified.