Tearing : crack paths in brittle thin sheets
Event details
| Date | 23.10.2012 |
| Hour | 14:15 › 15:15 |
| Speaker | Prof. Benoît Roman |
| Location | |
| Category | Conferences - Seminars |
When opening a package, one would like to propagate tearing cracks along paths that will allow to easily extract the content.
But sometimes we have the frustrating feeling that cracks in thin sheets follow their own will (think about peeling a piece of adhesive tape, or removing wallpaper).
I will review recent works which show that Indeed quasistatic cracks follow remarkably reproducible paths in thin sheet. I will try to demonstrate some of the experiments during the talk and give a simplified framework that can be used to predict these trajectories, and possible applications.
References :
E.Hamm, P.M.Reis, M.Leblanc, B.Roman, E.Cerda Tearing as a test for mechanical characterization of thin adhesive films Nature Materials Vol.7 No 5, 386-390 (2008)
B.Audoly, P.M. Reis and B.Roman Cracks in thin sheets : When geometry rules the fracture path Phys.Rev.Lett. vol 95 025502 (2005)
But sometimes we have the frustrating feeling that cracks in thin sheets follow their own will (think about peeling a piece of adhesive tape, or removing wallpaper).
I will review recent works which show that Indeed quasistatic cracks follow remarkably reproducible paths in thin sheet. I will try to demonstrate some of the experiments during the talk and give a simplified framework that can be used to predict these trajectories, and possible applications.
References :
E.Hamm, P.M.Reis, M.Leblanc, B.Roman, E.Cerda Tearing as a test for mechanical characterization of thin adhesive films Nature Materials Vol.7 No 5, 386-390 (2008)
B.Audoly, P.M. Reis and B.Roman Cracks in thin sheets : When geometry rules the fracture path Phys.Rev.Lett. vol 95 025502 (2005)
Links
Practical information
- General public
- Free
Organizer
- IGM
Contact
- Géraldine Palaj