polyester material
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2019 ◽  
Vol 89 (21-22) ◽  
pp. 4756-4765
Author(s):  
Daoling Chen ◽  
Pengpeng Cheng

Seam slippage often occurs with some garments during the process of wearing or washing, which not only affects the appearance of the garment but also influences garment quality. The purpose of this study is to find out the factors that affect the seam slippage of garments. In order to make the test results closer to those of the garment itself, this study first proposed to make the fabric into a Japanese woman's prototype sample, in order to simulate the garments produced by a garment enterprise. Then, according to standards GB/T 13772.2-2008/ISO 13936-2: 2004 and GB/T 21294-2014, samples were made and seam slippage at the armhole and side seam was tested. Experimental results reveal that the factors that cause the seam slippage of garments are the fabric, seam type and sewing thread. According to the regression analysis, the seam type has a significant effect on the seam slippage of the armhole and side seam, with Pearson correlation coefficients of −0.715 and −0.650, respectively. Thickness, weight, weft density and weave type of the fabric are also important in terms of seam slippage. The weight of the fabric is more significant than other factors; the significant values at the armhole and side seam are 0.009 and 0.002, respectively. In the linear equation, it is shown that weft breaking strength of the fabric only impacts the seam slippage at the side seam. Sewing thread is another important factor for the seam slippage of garments, and its influence on the armhole is obvious; the larger the sewing thread linear density of polyester material is, the smaller the seam slippage is.


2016 ◽  
Vol 177 ◽  
pp. 99-111 ◽  
Author(s):  
Zahra Mazrouei-Sebdani ◽  
Akbar Khoddami ◽  
Hassan Hadadzadeh ◽  
Mohammad Zarrebini ◽  
Ali Karimi ◽  
...  

2015 ◽  
Vol 78 ◽  
pp. 319-323 ◽  
Author(s):  
Gail D. Jefferson ◽  
Basil Farah ◽  
Michael L. Hempowicz ◽  
Kuang-Ting Hsiao

MECHANICAL ◽  
2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Tumpal Ojahan ◽  
R. Hansen ◽  
Aditia M.S.
Keyword(s):  

Serat alam telah terbukti sebagai material yang kuat, mampu untuk menggantikan serat sintetik sebagai penguat. Serat batang pisang kepok salah satu serat yang memiliki potensi sebagai penguat untuk polyester material komposit. Pada material komposit berpenguat(fiber) serat batang pisang kepok dapat menahan beban yang diterima material komposit. Sedangkan unsaturated resin polyester (UPR) sebagai pengikat serat batang pisang, bekerja menahan beban dan melindungi serat dari kerusakan. Hasil pengujian kekuatan tarik yang paling optimal terdapat pada volume fraksi 28% fiber : 72% matriks dengan  gaya maksimum 2327,9 N, tegangan tarik 67,2065 N/mm2, regangan 2,7477% serta modulus elastisitas 3441,82 N/mm2. Pada pengamatan SEM fraksi volume 28% filler : 72% matriks paling optimal karena adanya ikatan matriks dan serat menyatu dengan sempurna. Dari penelitian ini dapat disimpulkan bahwa pengaruh fraksi volume serat batang pisang kepok sebagai penguat (fiber) dan unsaturated resin polyester (UPR) sebagai pengikat (matriks) pada material komposit akan mempengaruhi kekuatan material kompositlebih kuat dan ulet.Kata kunci : serat pisang kepok, komposit, fraksi volume, kekuatan tarik, SEM


2013 ◽  
Vol 709 ◽  
pp. 547-550
Author(s):  
Zeng He ◽  
Zhong Wei Zhang ◽  
Han Feng ◽  
Long Wang

Change detection is widely used in various fields of the image processing, such as remote sensing image analysis for land resources. Change detection is to find out the differences between the images to get the information of the object changes by analysis the images of the different periods. In this paper, the wavelet method was conducted on the images of the polyester material before melting and melting and calculated the differences of wavelet coefficients. Then performed the wavelet inverse transform to get the wavelet difference image and conducted adaptive threshold segmentation. Finally the rate curve of melting process of polyester material was calculated by image change quantized value, which was concluded by the wavelet difference image binarization.


2011 ◽  
Vol 43 (2) ◽  
pp. 97-153 ◽  
Author(s):  
Renzo Shamey ◽  
Woo Sub Shim

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