Abstract
The mode I and mode II fracture properties of the FM300-2 adhesive bond between 5HS/RTM6 laminates are determined experimentally by DCB and ELS test. The crack propagation is studied numerically by means of interface elements based on the decohesive zone model. The latter is characterized by material degradation, which is usually assumed to be linear. In the present study it is shown that if a non-linear material degradation is used with an increased magnitude of the interface relative displacement at failure it is possible to model more correctly the experimentally observed significant non-linear behaviour before the start of crack propagation. An adhesive stepped flush joint is studied experimentally and numerically. A mixed mode interaction criterion is used together with the nonlinear material degradation of the interface. Sensitivity studies are performed to study the influence of the parameters defining it.
| Original language | English |
|---|---|
| Title of host publication | 16th ICCM International Conference on Composite Materials |
| Place of Publication | Kyoto, japan |
| Publisher | International Committee on Composite Materials |
| Number of pages | 9 |
| Publication status | Published - 2007 |
Bibliographical note
16th ICCM International Conference on Composite MaterialsKyoto, Japan
08 -13 Jul 2007
Keywords
- DCB Decohesive zone ELST Interface elements Mixed mode Adhesive joints Crack propagation Cracks Glass ceramics Interfaces (materials) Composite adhesive joints Experimental and numerical studies Mixed-mode interactions Nonlinear behaviours Relative displacement Adhesives