In recent years, researchers, in accordance with new environment protection approaches, try to changing conventional glass and carbon fibres for natural reinforcement in composite materials. Method of acoustic emission (AE) is more and more widely used for composite analyses. To link AE parameters properly with various failure mechanisms, signals that may be emitted from the reinforcement material itself should be understood. Flax fibre failure mechanism under tensile stress was revealed using electron microscope and AE method. It was found that flax filaments separate along their weak interface, containing pectin (fibrillation), then, microcracks appear near maximum tensile stress perpendicularly to the direction of tension and finally, filaments tear when the stress reaches break strength. The failure mechanisms mentioned above are associated with amplitude values of AE signals.
|Number of pages||9|
|Journal||Muanyag Es Gumi/Plastics and Rubber|
|Publication status||Published - Oct 1 2002|
ASJC Scopus subject areas
- Polymers and Plastics