Figure 5 Graph of compressive stress against strain of polyester and CNSL resins reinforced with glass fibres Figure 4: Graph of tensile stress against strain of unreinforced polyester and CNSL resins
Related Figures (6)
Figure 1: The sample specimens for strength test samples- development was the same for both synthetic and natural resins. It was also repeated with the resins reinforced with 30% by volume of glass fibres. Figure 3: Graph of compressive stress against strain of unreinforced polyester and CNSL resins Figures 2.3 and 2.5 are the same. This is because the inclusion of fibres in polymer matrices does not change the compressive strength of the resulting composite (Han et al., 2006). In Figure 2.6, there is a remarkable increase in the tensile strengths of the composites developed from the two polymer matrices. This is because when fibre reinforced composite materials are subjected to tensile loading, the fibres absorb the major component of the load and this makes the fibres to be responsible for the tensile strength of any composite. Figure 6: Graph of tensile stress against strain of polyester and CNSL resins reinforced with glass fibres