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ÖMEROĞLU, SUNAY

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ÖMEROĞLU

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SUNAY

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2015 - 20193
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    Publication
    Effects of fiber cross-sectional shapes on tensile and tearing properties of polyester woven fabrics
    (Ege Üniversitesi, 2015-10-01) Karaca, Esra; Ömeroğlu, Sunay; Becerir, Behçet; KARACA, ESRA; ÖMEROĞLU, SUNAY; BECERİR, BEHÇET; Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü.; 0000-0003-1777-3977; 0000-0002-2655-2773; AAH-1445-2021; AAM-7071-2020; AAS-8480-2020
    Breaking load and elongation, and tearing load properties of two type fabrics (plain and twill) woven from polyester fibers having round, hollow round, trilobal and hollow trilobal cross-sectional shapes were investigated. The fabrics produced from full fibers had higher breaking elongation and tearing load values but generally lower breaking load values than the fabrics produced from hollow fibers. The highest breaking load value was obtained in twill fabric woven from filaments having hollow round cross-sectional shape, while the highest tearing load value was obtained in twill fabric woven from filaments having round cross-sectional shape. The fabrics constituting filaments with round cross-sectional shapes had the highest breaking elongation values It was concluded that the effect of fiber cross-sectional shape on breaking strength and on tearing strength differed from each other.
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    Publication
    Effects of yarn twist levels on percentage reflectance of cotton fabrics woven with various constructional parameters
    (Amer Assoc Textile Chemists Colorists-aatcc, 2015-01-01) Ömeroğlu, Sunay; Akgün, Mine; Becerir, Behçet; ÖMEROĞLU, SUNAY; AKGÜN, MİNE; BECERİR, BEHÇET; Uludağ Üniversitesi; 0000-0002-2655-2773; 0000-0002-1618-6562; AAG-9756-2021; AAM-7071-2020; AAH-1445-2021
    Percentage reflectance of plain, twill, and sateen fabrics woven from cotton yarns having various yarn counts and twist levels were presented. Yarn hairiness, fabric thickness, and fabric bulk density that changed with different twist levels were assessed with fabric percentage reflectance. All measured values changed between samples according to yarn twist levels in different ways. Percentage reflectance of fabric samples increased until yarns reached a certain twist level, then decreased with further yarn twist increases. This relationship between fabric percentage reflectance and yarn twist levels was more readily observed in less compact fabrics (fabrics having a low fabric cover factor, low fabric bulk density, and low yarn intersection numbers). Fabric bulk densities and fabric thickness values changed in accordance with yarn twist levels and fabric percentage reflectance.
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    Publication
    Comparative study on carded cotton yarn properties produced by the conventional ring and new modified ring spinning system
    (Inst Chemical Fibres, 2019-03-01) Buharalı, Gözde; Ömeroğlu, Sunay; ÖMEROĞLU, SUNAY; Bursa Uludağ Üniversitesi/Mühendislik Fakültesi/Tekstil Mühendisliği Bölümü; AAM-7071-2020
    In this paper; the properties o yams which were produced by using a modified ring spinning system (ProSPIN (R)) and conventional ring spinning system were comparatively investigated. The modified spinning system which was used in yarn production has basically the characteristic of compact spinning system and is at present used especially in the production of mid-count yarns. In this study, conventional ring yarns and equivalent modified ring spun yarns were produced with different yarn counts and twists using 100% carded cotton raw material. Tests were conducted to determine the tensile, unevenness, imperfection and hairiness properties of the yarns. It was found that the modified ring spun yams showed considerable positive differences in some yarn properties compared with conventional ring yarns. The diffrrences in tenacity values were more evident especially in yams with lower twist coefficients, while differences in hairiness values were more so in finer yarns. Also the unification of two separate and compacted fibre strands during yarn formation ensures better values for both mass irregularity and IPI because of the doubling effect.