Browsing by Author "Lehmden, Radek"
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- ItemModelování vlastností bavlněných rotorových přízí(2008-01-01) Lehmden, Radek
- ItemModelování vlastností bavlněných rotorových přízí(Technická Univerzita v Liberci, 2008-01-01) Lehmden, Radek; Křemenáková, DanaThis diploma thesis deals with the outline of the influence parameters of cotton raw material on yarn characteristics; above all, on packing density and strength. In the background research the current state refering to the rotor spinning problem, the influence of raw materials quality on final yarn and chosen access possibilities to the strength modelling are described. The experimental material is a set of seventeen rotor yarns of the same explicit refinement 16.5 tex, of the same twist multiplier by Phrix 73 m-1ktex2/3, which were mixed from different types of cotton raw materials. The experimental evaluation of the chosen fibre parameters is conducted, as well as the yarns scaling of their mechanical and physical properties. By using statistical methods the connection among single yarn and fibre properties is judged. In the work, chosen terms for the prediction of yarn packing density and strength are tested. Moreover, the yarn verification relationship at such a tension and the regress model creation for the prediction of rotor yarn strength are tested as well.
- ItemPopis mechanických tryskových strojů tkalcovské dílny TU Liberec(2005-01-01) Lehmden, Radek