AVS 59th Annual International Symposium and Exhibition
    Tribology Focus Topic Tuesday Sessions
       Session TR+BI-TuM

Invited Paper TR+BI-TuM5
Self Healing Materials: A New Approach to Make Materials Perform More Reliably under Harsh Conditions

Tuesday, October 30, 2012, 9:20 am, Room 19

Session: Self Healing Coatings, Bio-Inspired Design, and Frictional Properties of Biological Materials
Presenter: S. van der Zwaag, Delft University of Technology and University of Twente, the Netherlands
Authors: S. van der Zwaag, Delft University of Technology and University of Twente, the Netherlands
M. Valefi, Delft University of Technology and University of Twente, the Netherlands
S. Garcia, Delft University of Technology and University of Twente, the Netherlands
M.R. de Rooij, Delft University of Technology and University of Twente, the Netherlands
Correspondent: Click to Email
Currently all engineering materials are designed on the basis of the 'amage prevention' paradigm i.e. the microstructure is designed such that damage forms as late as possible and grows slowly, but no mechanisms are built in which can reduced damage once formed. Materials in nature on the other hand seem optimised on the basis of 'damage management' paradigm, i.e. the occurrence of damage is taken as unavodidable and the material has the in-built ability to repair the damage during less demanding stages of the loading cycle. In this presentation we will show various approaches to self healing behaviour in a wide range of material classes and also show how self healing concepts can be used to mitigate tribological damage in both ceramics and polymeric materials. The experimental results are supported by a simple mechanical model.