Abstract
Delamination in composite laminates may arise from either fabrication processes or impact during service. In transversely stitched composites the delamination is not completely separated but is being held together by the stitches in the form of crack/interface bridging. The influence of this bridging on the buckling of laminates is examined, based upon the assumption that the bridges follow a Winkler elastic foundation type stress separation relation. A special 'thin-film' case when the delaminated laminate is very thin compared to the thickness of the composite is first examined. Lower and upper bound buckling loads are obtained, together with the buckling load, by means of the energy method of analysis of a unidirectional beam. It is shown that adequate crack bridging by stitching can significantly increase the buckling strength of delaminated laminated composites under edgewise compression.
| Original language | English |
|---|---|
| Pages (from-to) | 25-33 |
| Number of pages | 9 |
| Journal | Composites Science and Technology |
| Volume | 47 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1993 |
| Externally published | Yes |
Keywords
- bridging
- buckling
- delamination
- fibre-reinforced composite laminates
- stitching
- Winkler elastic foundation
ASJC Scopus subject areas
- Ceramics and Composites
- General Engineering