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Fibre bundle testing is different from single-fibre measurement, not only in testing methods and instruments, but in the results obtained. For wool fibres, Sirolan-TENSOR can supply fibre-bundle tenacity (BS) and bundle extension ( BE), but has some limitations on the analysis of the measured tensile curves of fibre bundles. It has not only raised new parameters, such as initial modulus (BM) and specific work of rupture (BW), as well as the specific work before or after the peak-point(WBP or WAP) and the ratios of WAP/WBP and WAP/BW, but also compared the tensile behaviour of different fibre-bundles, e.g. wool, polyester and viscose rayon fibre-bundles. The experimental results from 32 lots of wool tops show that there are correlations between bundle tensile properties, such as BS-BE, BS-BM, BS-BW, BE-BW and BM-BW. However, the variables of coefficients of variance (CV) are almost independent of each other and have no correlation with the average values of fibre bundle tensile parameters, except for BS-
For wool fibers, Sirolan-TENSOR can supply fiber-bundle tenacity (BS) and bundle extension (BE), but has some limitations on the analysis of the measured tensile curves of fiber bundles. It has not only raised new parameters, such as initial modulus (BM) and specific work of rupture (BW), as well as the specific work before or after the peak- point (WBP or WAP) and the ratios of WAP / WBP and WAP / BW, but also compared the tensile behavior of different fiber-bundles, eg wool, polyester and viscose rayon fibers-bundles. The experimental results from 32 lots of wool tops show that there are correlations between bundle tensile properties, such as BS-BE, BS-BM, BS-BW, BE- BW and BM- BW. However, the variables of coefficients of variance (CV) are almost independent of each other and have no correlation with the average values of fiber bundle tensile paramete rs, except for BS-