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- 저자 : Azita Asayesh (검색결과 1 건)
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Sheyda Sadat Mirjalali Bandari,Azita Asayesh,Masoud Latifi 한국섬유공학회 2020 Fibers and polymers Vol.21 No.4
Stress relaxation is a time-dependent behavior in textiles, which occurs with the release of stresses when the textileis under constant strain over a period of time. This phenomenon will induce disturbances in textile performance inapplications such as pressure garments, varicose stockings, pressure bandages and etc., in which it is critical to maintainpressure on the scar area, within a certain range according to instructions from doctors or therapists. Consequently, bytheoretical and experimental research on the factors affecting stress relaxation, it will be possible to design and produceappropriate functional clothes. In the present study, double jersey weft knitted fabrics with five different knit patternsdiffering in the number of back bed tuck stitches have been produced and the effect of fabric structure and strain value on thestress relaxation of the fabrics in the course direction have been investigated. The results reveal that by increasing the numberof tuck stitches in the fabric structure, the initial and residual stress values decrease whilst the stress relaxation of the fabricincreases. Moreover, in all fabric structures, applying higher tensile strain will cause higher stress in the fabrics as well asincrease the stress relaxation of the fabrics. Eventually, three components Maxwell model with parallel connected nonlinearspring proposed as the best model that matches the experimental results. As a whole, to enhance the functionality of pressuregarments, varicose stockings and compression bandages, the use of tuck stitch in the fabric structure is not recommended.
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