Abstract
In order to improve the strength of composite T joint, z-pin is often used to reinforce it and prevent delamination growing. This paper designed un-pinned and z-pinned samples with the same size; tensile pull-out testing was performed to study bridge effect of z-pin and damage evolution of these composite T joints. Finite element models were built to simulate the failure process and bridge effect of z-pin. It is shown that the ultimate load and displacement of z-pinned composite T joints are 47.63% and 2.07 times higher than that of un-pinned joints; toughness of T joints is not improved by z-pin；simplified pin model can be used to simulate bridge effect of z-pin on damage evolution of composite T joint；z-pin can prevent delamination growing.
| Original language | English |
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| State | Published - 2015 |
| Event | 20th International Conference on Composite Materials, ICCM 2015 - Copenhagen, Denmark Duration: 19 Jul 2015 → 24 Jul 2015 |
Conference
| Conference | 20th International Conference on Composite Materials, ICCM 2015 |
|---|---|
| Country/Territory | Denmark |
| City | Copenhagen |
| Period | 19/07/15 → 24/07/15 |
Keywords
- Bridge effect
- Cohesive zone
- Composite T joint
- Damage evolution
- Z-pin reinforced