پديد آورنده :
رجالي، محمد
عنوان :
پيش بيني و بهينه سازي تشكيل پرزدانه پارچه هاي حلقوي پودي بافته شده از نخ هاي مخلوط فاستوني
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
تكنولوژي نساجي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده نساجي
صفحه شمار :
92ص: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد مشاور :
سعيد آجلي، محسن شنبه
توصيفگر ها :
مخلوط الياف پشم آكريليك , مقاومت سايشي , روش تاگوچي , شبكه عصبي
تاريخ نمايه سازي :
6/3/92
استاد داور :
محمد ذره بيني، داريوش سمناني
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
93 Predicting and optimizing the pilling performance of weft knitted fabrics produced from blended worsted yarns Mohammad Rejali Rejali mehran2222@yahoo com 25 sep 2212 Department of Textile Engineering Isfahan University of Technology Isfahan 48651 41666 IranDegree M Sc Language FarsiHossein Hasani h hasani@cc iut ac irAbstractPilling of fabrics is a phenomenon caused by conglomeration of fibers and their accumulation on thesurface of fabrics This free mass of fibers seen on the surface of fabrics is called pill Increase inthe number of pills on fabrics not only creates unpleasant appearance but also results in the abrasionof clothes and its early erosion With washing or wearing of the clothes with each other pills areformed through the engagement of the fibers protruding from the fabric surface Therefore identifying the factors effective on pilling as well as their measurement and control is very important Among these factors length linear density tear strength abrasion resistance fibers count yarn twistand structure of the fabric can be mentioned The purpose of this study is to examine the effects of various fabric parameters such as material yarncount and twist structure and density of fabric as well as examination of the effect of feeding twoparallel yarns into a flat knitting machine on the rate of pilling in weft knitted fabrics with blendedwool acrylic fibers Therefore three types of yarns with blended ratio of 0 0 and withgrades of 0 and metric yarn count and twist metric factor of 80 and 00 were used as samples These yarns were knitted by a gauge flat knitting machine in three structures single weft knitted simple rib and full Milano with both low and high densities After preparing the samples they were 00 000 00 and 000 rotations Then theexposed to erosion with Martindale machine withformed pills were counted in three ways eye counting photography in a dark room and scanning ofsurface of sample Afterwards the resulted data were analyzed by using Taguchi experiment designprogram based on which the samples had been produced and the optimum conditions of differentfabric factors were obtained Results of this study showed that among the parameters which used in design of the experiments yarnmaterial density and structure type of fabric in sequence had the highest effect on formation rates ofpills Therefore the lowest numbers of pills after 000 cycles of abrasion on yarns knitted withpercent of acrylic were formed with full Milano structure Also according to these results withincreasing density and yarn twist the number of pills formed on fabrics declines Finally these resultswere used to estimate the number of pills in these types of yarns through neural network method Key words wool acrylic blend fibers abrasion resistance pill weft knitted fabric Taguchi method neural network
استاد مشاور :
سعيد آجلي، محسن شنبه
استاد داور :
محمد ذره بيني، داريوش سمناني
