Arif Kurbak
Dokuz Eylül University
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Publication
Featured researches published by Arif Kurbak.
Textile Research Journal | 2008
Arif Kurbak; Ozgur Ekmen
A geometrical model for widthwise curlings in plain knitted structures is suggested here based on the plain knitted fabric model of Kurbak (1998). The main aim is to create models of m × n rib fabrics and also to model small diameter tubular fabrics. The model obtained is drawn to scale using the 3DS-MAX computer graphics program. With this model, the changes in radius of curvature at each part of the loop are shown.
Textile Research Journal | 2011
Tuba Alpyildiz; Maryline Rochery; Arif Kurbak; Xavier Flambard
A new double-face knitted structure has been developed which is composed of tuck stitches and has the same back and front faces. The newly derived structure, manufactured from p-aramid fibers with and without inlay yarns, has been compared with jersey and plush structures of these same fibers in terms of cut and stab performances. Not only have new structures been proposed, but the effect of the inlay yarns has been investigated also. In order to manufacture the plush structure on a V-bed Flat Knitting Machine instead of a traditional circular knitting machine a new design has been developed. The results show that the newly derived structure with inlay yarns has the best cut and stab performances when a comparison is made between samples of different structures with the same mass per unit area and thickness values.
Textile Research Journal | 2007
Gulmira Amreeva; Arif Kurbak
In this work, the dimensional properties of milano rib and half milano rib knitted fabrics were investigated experimentally using five different take-down tension values, five different tightness values, and three different yarn types. Dry, wet, and wash relaxations were applied to the samples, and after each relaxation, course-spacings (c) and wale-spacings ( w) were measured. Loop lengths (ℓ) were also measured only after dry relaxation. Linear regression analysis was applied to the relations between c and ℓ and between w and ℓ. High correlation coefficients were found and the intercepts Ac and Aw of these linear regression equations were statistically important. Yet another regression equation between the intercepts Ac and the inclinations 1/Kc and also between Aw and 1/Kw could be applied with high correlation coefficients. The results showed that Kurbaks empirical equations were also applied to milano rib fabrics and the coefficients of the equations were given together with the most popular weft knitted fabrics.
Textile Research Journal | 2010
Özlem Kayacan; Arif Kurbak
In this study, two different types of liquid cooling garments are designed and their cooling effects are comparatively investigated. The tubing lengths and the inner layers of these garments are taken as the same, and the other parameters of the garments differed. In the outer layer of the garments, 10 × 3 rib and single jersey knitted wool fabrics are used. In the inner layer of the fabrics, cotton wound dressings are used. In one garment design, S-shaped sponges are used as the mid layer. For 10 × 3 rib the mid layer is obtained by three loops of 10 × 3 rib, and the outer layer is obtained by 10 loops of 10 × 3 rib, due to its three-dimensional structure. To test these garments, a thermal manikin and a chiller are developed. The effects of water inlet temperature and flow rate on the cooling effect are examined. Outer garments of 10 × 3 rib structure are found to provide effective cooling. When the water inlet temperature decreases, the effective cooling slightly increases. At lower flow rates, effective cooling increases slightly, while this effect disappears for higher flow rates.
Textile Research Journal | 2009
Arif Kurbak
The 1 × 1 rib knitted fabric is mostly used for collar, cuff, waistband, etc. of outerwear knitted garments and it is also very popular nowadays for using as preforms of knitted composite structures. A geometrical model to predict the dimensional properties of conventionally knitted 1 × 1 rib fabric is created and given in part I of this series of papers. With the 1 × 1 rib model, relaxation mechanism and the effect of tightness on conventionally knitted 1 × 1 rib fabrics of wool are attempted to be explained (as an example of application of the model).
Textile Research Journal | 2006
Arif Kurbak; Gulmira Amreeva
A geometrical model for milano rib fabric at a normal tightness condition, based on Kurbaks (1998) plain-knitted loop model, was created. The model showed that small yarn compressions at the interlocking points and 50% yarn swellings away from the interlocking points might have occurred in the experimental sample used for comparison. Drawing of the model using the 3DS MAX computer graphic program gave a similar shape to that obtained experimentally with the real fabrics.
Textile Research Journal | 2009
Arif Kurbak; Ali Serkan Soydan
Since there are no such models in the literature, geometrical models for 2 × 2, 3 × 3, 4 × 4, and 5 × 5 rib fabrics are created in this paper. To obtain these models, the degree of widthwise curling for each fabric is assessed from photographs and the regions between the 1 × 1 rib parts and the curled plain knit parts of the mentioned structures are modeled in this paper, making yarn curvatures continuous throughout the structure concerned. Models created are drawn to scale by the graphical program 3DS-Max. During the creation of these models, it is emphasized that Kc values are almost the same for all the m × m rib fabrics and the second kind of spiralities which are effective on m × m ribs are also considered.
Textile Research Journal | 2008
Arif Kurbak; Tuba Alpyildiz
Geometrical modeling of the double lacoste knitted fabrics is studied. Elliptical shapes for the head of loops (tuck and plain), general helices and lemniscate curve for the rest of the parts including the arms of the loops are used. The coordinates of the points on the fitting curves are found and these points are used in the simulation of the front and back views of the double lacoste knitted fabrics. A proper geometric definition of the double lacoste structure is given to be used in further analysis, such as finite element method applications. With this model it will be possible to obtain the 3D appearance of the fabric using basic experimental results as inputs.
Textile Research Journal | 2009
Arif Kurbak; Tuba Alpyildiz
This paper deals with the creation of geometrical models for presser-foot knitted 1 × 1 rib, interlock and half milano rib knitted fabrics as direct applications of the 1 × 1 rib model given in Part I of this series of papers. The drawings of the models using 3DS-Max are shown and observed to be similar to the real fabrics through the photographs provided. The run-in ratio between the plain course and the rib course of half milano rib fabrics is emphasized as an important parameter for obtaining a stress-free structure, especially when using these fabrics as technical textiles.
Textile Research Journal | 2009
Arif Kurbak; Tuba Alpyildiz
A geometrical model for the half cardigan structure is presented based on the model of full cardigan structure given in Part I of this series of papers. In the model, loop and tuck stitch heads are taken as ellipses in two dimensions. The rest of the loops and tucks are taken as parabolic helices wrapped on elliptical cylinders in general. The parameters of the model were obtained by using a wash-relaxed wool fabric at medium tightness. Computer drawings of the model were created by the 3DS MAX graphical program, which gave similar loop shapes to those observed in real fabrics.