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Bursa, Turkey

Tekoglu O.,Giresun University | Kavusturan Y.,UludagUniversity
Tekstil ve Konfeksiyon | Year: 2011

In this study, an experimental work is presented to determine the effects of two different fancy yarn structures (chenille and macaroni) and four different raw materials (acrilic, cotton, polyester and viscose) on the abrasion and tensile propertries of woven upholstery fabrics. Results were evaluated by SPSS statistical program. All test results were assessed at a confidence level of at least 95% (at most 5% significance level). The abrasion resistance and tenacity values of chenille and macaroni yarns were measured too. Abrasion resistance and tenacity values of chenille and macaroni yarns are affected significantly by material type and fancy yarn structure. Macaroni yarns show higher weight loss (%) ratio and tenacity values than chenille yarns. Thickness values of chenille fabrics are higher than macaroni fabrics. Weight loss (%) values of chenille fabrics are higher than macaroni fabrics. The macaroni fabrics show higher stress values at max. load than chenille fabrics. The cotton and polyester yarns are abraded less than others. Polyester yarns and fabrics show the highest tensile strength values. Viscose yarns and fabrics less resistant to abrasion.

Babu K.S.,Oklahoma State University | Gogoladze I.,University of Delaware | Shafi Q.,University of Delaware | Un C.S.,University of Delaware | Un C.S.,UludagUniversity
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2014

We discuss the sparticle (and Higgs) spectrum in a class of flavor symmetry-based minimal supersymmetric standard models, referred to here as sMSSM. In this framework the supersymmetry breaking Lagrangian takes the most general form consistent with a grand unified symmetry such as SO(10) and a non-Abelian flavor symmetry acting on the three families with either a 2+1 or a 3 family assignment. Models based on gauged SU(2) and SO(3) flavor symmetry, as well as non-Abelian discrete symmetries such as S3 and A4, have been suggested which fall into this category. These models describe supersymmetry breaking in terms of seven phenomenological parameters. The soft supersymmetry breaking masses at MGUT of all sfermions of the first two families are equal in sMSSM, which differ in general from the corresponding third family mass. In such a framework we show that the muon g-2 anomaly, the observed Higgs boson mass of ∼125GeV, and the observed relic neutralino dark matter abundance can be simultaneously accommodated. The resolution of the muon g-2 anomaly in particular yields the result that the first two generation squark masses, as well the gluino mass, should be ≲2TeV, which will be tested at LHC14. © 2014 American Physical Society.

Karadere G.,UludagUniversity | Kopmaz O.,UludagUniversity | Gullu E.,UludagUniversity
International Journal of Materials and Product Technology | Year: 2010

This paper deals with the transient behaviour of two main parts of a clutch, i.e., friction plate and hub, in a passenger car, during engagement phase. The present work aims to develop a simple discrete model that might enlighten the vibrations of interior part of a clutch. The second part of the work is devoted to examining the effect of torsional stiffnesses, external loading torque, friction gradient and viscous damping on the transient behaviour of clutch parts along with other components. Case studies are carried out based on two different scenarios for clutch and gas pedals actions. Copyright © 2010 Inderscience Enterprises Ltd.

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