Adhesive Viscoelastic Response to Surfaces with Tailored Surface Chemistry

Achieving weight reduction in lightweight structural and protection applications, multi-material assemblies are being proposed in several applications ranging from tactical wheeled vehicles, rotorcraft, and munitions. Adhesive bonding of dissimilar materials found in these systems is a critical technology in the production of lightweight energy absorbing structures. The design and control of the adhesive interfaces can contribute largely to overall performance to include structural load transfer as well as energy absorption during failure. Fundamental understanding of adhesive and interfacial mechanisms allows for the systematic design of multi-material assemblies with desired performance features. In this work, we present initial attempts to correlate adhesive viscoelastic parameters and interfacial bonding on the adhesion of urethane-acrylate adhesives to glass substrates.