[사] Effect of Process and Machine Parameters on Changes in Tensile Properties of Threads during High-speed Industrial Sewing 출판일 : 2010.04.01 저자 : Vinay Kumar Midha, A. Mukhopadhyay, R. Chattopadhyay, and V.K. Kothari 서지사항 : Textile Research Journal, Volume 80, Issue 6, 491페이지 등록일 : 2011.03.18 I 조회수 : 77 작성자 : admin |
The dynamic, thermal, bending and abrasive loading of thread during sewing process has a
negative influence on the properties of sewing threads. In this study, the individual and
interactive effect of the number of fabric layers, stitch density and needle size on the loss in
tenacity, breaking elongation and initial modulus of four types of thread has been studied
using Box-Behnken design. Response surface regression equations of loss in tensile
properties on the above parameters were developed. The predicted equations agreed well
with the experimental data. Contrary to the general expectation, the loss in tenacity and
breaking elongation was found to decrease initially or remain unchanged as the number of
fabric layers increased. Initial modulus loss decreased with the increase in number of fabric
layers for all threads. Except for cotton thread, stitch density did not show any significant
influence on tenacity and breaking elongation loss. As the needle size increased, the loss
in tenacity and breaking elongation increased for all polyester threads, whereas these
properties remained unchanged for cotton thread. Analysis of variance was carried out to
find out the contribution of parameters in loss in tensile properties. The number of fabric
layers was found to have the highest contribution on tenacity and breaking elongation loss
of cotton threads, whereas needle size contributed substantially to the loss in these
properties of polyester threads.
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