کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10280889 465842 2005 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Measuring the yield stress of a particulate suspension under high electric fields
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Measuring the yield stress of a particulate suspension under high electric fields
چکیده انگلیسی
Certain classes of particulate suspensions, consisting of semi-conducting, solid particles dispersed in an insulating carrier liquid, show a dramatic increase in flow resistance when placed under an external electric field. These so-called “electro-rheological fluids” have potential application in engineering devices such as tunable vibration damping systems. Under the field, a yield stress is induced in the fluid, and the characterisation of this quantity is essential for the design of many engineering devices. A new method for determining the yield stress is presented, which involves subjecting the sample to a constant shear stress and monitoring its shear rate after a step change in the electric field. It is found that this step field method can reproducibly determine the field-induced yield stress of a suspension of silica particles in silicon oil.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Powder Technology - Volume 160, Issue 1, 30 November 2005, Pages 40-44
نویسندگان
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