Methodology for Tensile Tests on Vegetable Fibers

Linha de Pesquisa: 
Ano: 
2013
Palavras chave: 
Vegetable Fibres
Agave sisalana perr.
Musa spp. cv Prata
Stress

Abstract
The use of composites reinforced with natural fibers had a significant increase in recent years due to the advantages of using vegetable fibers as reinforcement. Vegetable fibers have important properties such as low density, biodegradability, thermal and mechanical properties appropriate disposal facility in and renewability. Moreover, the heterogeneity of the geometry and composition of these fibers requires a more rigorous characterization. In this article, we report a methodology for testing fibers, with samples preparation, calculation and analysis of data related to the cross section and fiber diameter and stress-strain curves. It investigated the behavior of the fiber when subjected to different humidity conditions (dry, In natura and moist). The diameters were calculated assuming a constant cross section, the results of these tests were discussed and compared between sisal and banana fibers. The fibers of Agave sisalana perr. and Musa spp. cv Prata showed the same behavior of the treatments humidity, the higher the moisture content of the fibers to lower the mechanical stress, the fibers of Agave sisalana perr. were more resistant than the fibers of Musa spp.cv Prata.

The use of composites reinforced with natural fibers had a significant increase in recent years due to the advantages of using vegetable fibers as reinforcement. Vegetable fibers have important properties such as low density, biodegradability, thermal and mechanical properties appropriate disposal facility in and renewability. Moreover, the heterogeneity of the geometry and composition of these fibers requires a more rigorous characterization. In this article, we report a methodology for testing fibers, with samples preparation, calculation and analysis of data related to the cross section and fiber diameter and stress-strain curves. It investigated the behavior of the fiber when subjected to different humidity conditions (dry, In natura and moist). The diameters were calculated assuming a constant cross section, the results of these tests were discussed and compared between sisal and banana fibers. The fibers of Agave sisalana perr. and Musa spp. cv Prata showed the same behavior of the treatments humidity, the higher the moisture content of the fibers to lower the mechanical stress, the fibers of Agave sisalana perr. were more resistant than the fibers of Musa spp.cv Prata.