Studies on the Prediction of Lea Strength of Cotton Yarns

면사의 리이강력 추정에 관한 연구

Summing up the results of research up to now, the autors can classify several equations for predicting the lea strength of cotton yarns from fiber properties into two broad categories; i) linear-multiple-regressions. in which the individual fiber properties are treated as the independent variables, and ii) curvilinear equations, in which the fiber properties are combined into one integrated index. One of the difficulties in these equations is that no application beyond the specific ranges of count to which particular cottons have been spun is possible. This study has been carried out with a view to rationalizing the prediction of lea strength from Bogdan's equation by means of constructing a correlation function between the intrinsic-strength parameter P, and such fiber properties as fiber length L, fiber strength S, fiber-length uniformity U, and fiber fineness F which are known to have an effect on the yarn strength. The following function was derived; where C, α, β, γ, and δ are constants.