| Title |
Behaviour of long-lasting stress relaxation of various types of yarns / |
| Authors |
Laureckienė, Ginta ; Milašius, Rimvydas |
| DOI |
10.1515/aut-2017-0017 |
| Full Text |
|
| Is Part of |
Autex research journal.. Warsaw : De Gruyter Poland. 2017, vol. 17, iss. 4, p. 379-385.. ISSN 1470-9589. eISSN 2300-0929 |
| Keywords [eng] |
stress relaxation ; polyester ; cotton ; woollen yarn |
| Abstract [eng] |
The main goal of this researcher is estimating of the possibility of long-lasting (even until 200,000 sec) stress relaxation by empirical investigation, which was performed until few thousands seconds. The empirical investigations of long-lasting stress relaxation of different types of yarns (multifilament polyester, cotton and woollen) at different levels of elongation, i.e. at 3 %, 5 %, 7 % and 10 % were carried out. The method of long-lasting relaxation behaviour prediction by the break-point of relaxation rate as well as the linear dependence of second part of relaxation were used. It was found that the behaviour of relaxation can be described using time logarithmic scale by two straight lines, and the value of stress relaxation in long time period could be estimated by the second line. The break-point of relaxation rate of all kinds of yarns occurs in the area of 100–200 seconds after relaxations started. Obtained results showed that the place of relaxation break-point depends on the level of elongation but do not depend on the type of yarns. |
| Published |
Warsaw : De Gruyter Poland |
| Type |
Journal article |
| Language |
English |
| Publication date |
2017 |
| CC license |
|
