Assessment of Debonding-Induced Toughening in Nanocomposites

✍ Scribed by M. Zappalorto; M. Salviato; M. Quaresimin

• Book ID: 104090020
• Publisher: Elsevier
• Year: 2011
• Tongue: English
• Weight: 273 KB
• Volume: 10
• Category: Article
• ISSN: 1877-7058
• DOI: 10.1016/j.proeng.2011.04.493

✦ Synopsis

The high mechanical performances achievable by nanomodification of polymeric resins at low nanofiller volume fractions are related to the energy dissipated through the damage mechanisms taking place at the nanoscale. Among the others, nanoparticle debonding could take an important role either as a mechanism itself or as a trigger for mechanisms like plastic void growth or matrix shear yielding. In the present work, a model for the assessment of the extension and the shape of the debonding region (DBR) and the toughness improvement due to nanoparticle debonding is presented. The model takes into account some important issues inherently related to the nanoscale with particular reference to the emergence of an interphase surrounding the nanoparticle. Results can be useful in the scope of a multi-scale modelling strategy to the problem.