| Popis: |
The fibre/matrix bond strength in CFRP is improved by surface treatment of the fibre. Four different qualities of the fibre/matrix interface as a result of different fibre Surface Treatment Levels (STL): 0%, 10%, 50% and 100% treated, were investigated. The fibre/matrix bond strength and the initial interlaminar fracture toughness were found to increase with STL. Further, GI rises with crack extension (R-curve). The highest increase was found for the intermediate treated fibre. The relation between bond strength and fibre bridging is described and it is found that an intermediate bond strength leads to a maximum interlaminar fracture toughness. |
