Browsing by Author "Mecit, Diren"

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    Effects of filament cross section on the performance of automotive upholstery fabrics
    (Sage Publications, 2016-09) Mecit, Diren; Boyacı, Bekir; Örnek, Münire; Koç, Serpil Koral; Hockenberger, Aslı; Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 24398865400; 6507435813
    Aim of this study was to investigate the effects of filament cross section on the performance of automotive upholstery fabrics. Thirty-six yarns were produced by changing the cross section of poly(ethylene terephthalate) fibers (round, octolobal and W-channel) and the air-jet texturing parameters (overfeed and number of core and effect yarns). After heat-setting and dyeing the yarns were woven into fabrics and laminated. Performance tests of both the air-jet textured yarns and the fabrics were carried out. It was observed that W-channel gave the most different air-jet textured yarn structure. It formed a bulky, uneven yarn structure with many open loops. No pronounced difference in the recovery from strain behaviors of the air-jet textured yarns was recorded. For all the cross-section types, increase in the looped structure resulted in higher permanent elongation values. In case of fabrics, all the filament cross sections gave satisfactory results for the light fastness and the abrasion resistance tests. It was concluded that changing filament cross section had the most significant effect on air permeability. W-channel gave the lowest air permeability, while octolobal gave the highest one.
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    Finite element analysis of the tensile strength of laminated fabric for automotive seat covers
    (Sage Publications Ltd, 2022-08-24) Çakmak, Sevgi; Meriç Kaplangiray, Binnaz; Dal, Murat; Sarısaç, Serdar; Mecit, Diren; Çakmak, Sevgi; Meric Kaplangiray, Binnaz; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 0000-0002-1296-9092; 0000-0001-8068-9626; AAD-9210-2019; GQT-2495-2022
    In this study, the tensile strength of laminated fabric used as an automotive seat cover was simulated using finite element analysis (FEA). The laminated fabric has three layers and is composed of plain weave fabric and twill 2/2 at different densities, polyurethane foam, and polyamide circular knitted scrim. FEA simulation was carried out on the constructed fabric geometrically using KTEX software. The laminated fabrics were then subjected to axial stress with opposing forces. The laminated fabric is assumed to be linear and elastic in FEA. The simulation outputs were compared with real test results and their graphs. The geometrical construction of laminated fabrics is crucial to obtain beneficial results. The tensile strength results of the simulations agree well with the actual values, although the strain-stress graphs may differ in several zones. The consistency between the actual test results and simulation may provide a model for surface deformation for further studies.