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Statements

Subject Item
n2:RIV%2F46747885%3A24410%2F11%3A%230000899%21RIV12-GA0-24410___
rdf:type
skos:Concept n3:Vysledek
dcterms:description
The directional fiber arrangement in the sliver significantly determines the internal structure and mechanical properties of produced yarn. The experimental method according Lindsley’s idea, based on the weighting of suitable combed cut-off fringes, is used most frequently. But the traditional Lindsley’s evaluation takes some empirical ratios of fringe weights only. We analyzed the experimental process and derived a set of relevant equations for the theoretical determination of measured fringe weights. Our new characteristic of orientation represents the harmonic mean of cosines of angles among short fiber segments and longitudinal direction of sliver. We can also estimate whole probability density function of the directional fiber arrangement in a sliver. Experimental data of polyester sliver compared with the theoretical results show a good accordance. It also bears out the assumption that the directional fiber arrangement in carded sliver is similar to the orientation of fibers in carded web. The directional fiber arrangement in the sliver significantly determines the internal structure and mechanical properties of produced yarn. The experimental method according Lindsley’s idea, based on the weighting of suitable combed cut-off fringes, is used most frequently. But the traditional Lindsley’s evaluation takes some empirical ratios of fringe weights only. We analyzed the experimental process and derived a set of relevant equations for the theoretical determination of measured fringe weights. Our new characteristic of orientation represents the harmonic mean of cosines of angles among short fiber segments and longitudinal direction of sliver. We can also estimate whole probability density function of the directional fiber arrangement in a sliver. Experimental data of polyester sliver compared with the theoretical results show a good accordance. It also bears out the assumption that the directional fiber arrangement in carded sliver is similar to the orientation of fibers in carded web.
dcterms:title
A Mathematical Model of Evaluation of Fibre Orientation in Slivers A Mathematical Model of Evaluation of Fibre Orientation in Slivers
skos:prefLabel
A Mathematical Model of Evaluation of Fibre Orientation in Slivers A Mathematical Model of Evaluation of Fibre Orientation in Slivers
skos:notation
RIV/46747885:24410/11:#0000899!RIV12-GA0-24410___
n3:predkladatel
n4:orjk%3A24410
n5:aktivita
n16:P
n5:aktivity
P(GA106/09/1916)
n5:dodaniDat
n7:2012
n5:domaciTvurceVysledku
n12:6435971
n5:druhVysledku
n11:O
n5:duvernostUdaju
n18:S
n5:entitaPredkladatele
n13:predkladatel
n5:idSjednocenehoVysledku
183873
n5:idVysledku
RIV/46747885:24410/11:#0000899
n5:jazykVysledku
n17:eng
n5:klicovaSlova
Fiber; Orientation; Sliver; Model
n5:klicoveSlovo
n6:Fiber n6:Sliver n6:Orientation n6:Model
n5:kontrolniKodProRIV
[0F69945ED46C]
n5:obor
n8:JJ
n5:pocetDomacichTvurcuVysledku
1
n5:pocetTvurcuVysledku
3
n5:projekt
n15:GA106%2F09%2F1916
n5:rokUplatneniVysledku
n7:2011
n5:tvurceVysledku
Isthiaque, S. M. Neckář, Bohuslav Das, Dipayan
n9:organizacniJednotka
24410