MANYETOREOLOJİK (MR) AKIŞKANLARIN KAPALI DURUM VİSKOZİTESİNİN İNCELENMESİ

Abstract

Bu çalışmada silikon yağ ve demir (Fe) bazlı manyetoreolojik (MR) akışkanlarının kapalı durum (off-state) viskozite özellikleri incelenmiştir. Farklı oranlardaki manyetik faz miktarı (hacmen %5, 10, 20, 30 ve 40) ile hazırlanan MR akışkanlarının rölatif viskozitesinin (η_rel) – manyetik faz miktarına (φ) olan ilişkisi deneysel olarak tespit edilmiştir. Elde edilen veriler Mooney ve Krieger-Dougherty modelleriyle karşılaştırılmıştır. Deneysel sonuçlar MR akışkanın viskozitesinin manyetik faz miktarı ile önemli ölçüde arttığını göstermiştir. Ayrıca viskozite profilleri Mooney modeli ile uyumlu bulunmuştur. 

Keywords

• Manyetoreolojik akışkanlar,viskozite

INVESTIGATION OF OFF-STATE VISCOSITY OF MAGNETORHEOLOGICAL (MR) FLUIDS

Abstract

In this study the off-state viscosity characteristics of silicone oil and iron (Fe) based  magnetorheological (MR) fluids were investigated. The relationship between relative viscosity (η_rel) and the amount of magnetic phase (φ) of MR fluids that were prepared with various  concentrations of magnetic phase (5, 10, 20, 30, 40 vol%) was determined experimentally. The data obtained from experimental study were compared with Mooney and Krieger-Dougherty models. The experimental results showed that the viscosity had a shear thinning behavior and it increased significantly with increasing magnetic phase. Besides, the viscosity profile was found to be in good agreement with Mooney model. 

Keywords

• Magnetorheological Fluids,viscosity

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