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Phenomena occurring during longitudinal tension pulses in visco-elastic linear textile products

Stempień Z.

Autex Research Journal

2002

Vol. 2, no. 4

210--227

A feasible possibility exists of generating longitudinal loads in the form of tension pulses during the processing and use of visco-elastic linear textile products. The propagation of such pulses can be accompanied by hitherto unexamined phenomena different from those occurring over the time of static loading; among other such, the phenomenon of potential destruction can appear. The generation and propagation of tension pulses in a linear textile object fastened between two insuperable barriers are discussed in this work. The investigation's results allow us to state that during the time of tension pulse propagation, the selection of the tension pulse (which is only one of the longitudinal loads acting on a linear textile product) is fully justified. The destruction of thread can be accompanied with tension pulse propagation, but in contrast to other typical longitudinal loads, this destruction can differ along the whole length of the pulse. Under conditions of repeated one-directional pulse stimulation, and considering the attenuation of this forcing, a linear aniso-destruction of the tread can appear as the result of its destruction. In the case when only one insuperable barrier exists, two different zones of potential destruction of the linear textile product will occur, whereas three different zones are observed with two barriers.

Application of artificial neural networks for the analysis of the propagation of a tension pulse in viscoelastic linear textile products

Stempień Z.

Zeszyty Naukowe. Włókiennictwo / Politechnika Łódzka

2000

z. 58

143-153

The paper presents the analysis of the phenomena taking place during a undirectional passage of a single pulse through the structure of linear textile products.