Aspects of the Mechanics of Thermoplastic and Thermoset Polymer Nanocomposites
Event details
| Date | 11.06.2013 |
| Hour | 13:15 › 14:15 |
| Speaker |
Catalin R. Picu Bio : Prof. Picu received his PhD degree from Dartmouth College and spent few years as Research Associate at Brown University. He joined the Department of Mechanical, Aerospace and Nuclear Engineering at Rensselaer Polytechnic Institute in 1998, where he is now Professor and Associate Head. He is the author or co-author of two books, multiple book chapters and over 100 journal articles. His research focuses on mechanics of materials, and in particular, on understanding the macroscopic material behavior based on physics taking place on multiple scales. He is a fellow of ASME. |
| Location | |
| Category | Conferences - Seminars |
This talk will address various issues related to the multiscale mechanical behavior of nanocomposites with thermoplastic and thermoset resin base. Some key mechanisms leading to exceptional properties of thermoplastic resin-based nanocomposites will be discussed first. Both experimental and modeling data will be presented to demonstrate how these mechanisms operate on multiple scales. This behavior will be contrasted with that of nanocomposites with thermoset matrix. Epoxy filled with carbon nanotubes and with graphene will be considered for this purpose, and data will be provided to demonstrate substantial enhancement of fatigue resistance in nanocomposites relative to the unfilled matrix. It will be shown that carbon nanotubes promote crazing on the nanoscale – a phenomenon not observed macroscopically in thermosets. The macro- and nanoscale creep of epoxy-graphene will be also discussed. A set of experiments providing the modulus and strength of individual graphene sheets with controlled concentration of defects will be presented. A by-product of this work is a method that can be used to predict the strength of graphene in a given sample exclusively based on the Raman spectrum. The talk will close with a brief overview of other research projects ongoing in this group.
Practical information
- General public
- Free
Organizer
- IGM
Contact
- Géraldine Palaj