Abstract
This paper aims to investigate stress ratio effect on fibre bridging significance in mode I fatigue delamination growth of composite materials. Fatigue resistance curves (R-curves) of different stress ratios are determined and compared with the quasi-static R-curve. The fatigue R-curve of a high stress ratio is similar to the quasi-static results. However, fatigue resistance of a low stress ratio is smaller than quasi-static resistance. These indicate that fibre bridging significance is stress ratio dependent. More bridging fibres can be generated in delamination of a high stress ratio, as compared to that of a low stress ratio. This can lead to fatigue bridging laws are stress ratio dependent and fatigue delamination is block load sequence dependent.
| Original language | English |
|---|---|
| Pages (from-to) | 65–74 |
| Number of pages | 32 |
| Journal | Composites Part A: Applied Science and Manufacturing |
| Volume | 95 |
| DOIs | |
| Publication status | Published - 2017 |
Keywords
- B. Fatigue
- B. Delamination
- Fibre bridging
- A. Polymer-matrix composites (PMCs)