کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
615690 1454859 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Relation between low temperature fluidity and sound velocity of lubricating oil
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Relation between low temperature fluidity and sound velocity of lubricating oil
چکیده انگلیسی

Low temperature fluidity is important for lubricating oil. Viscoelastic solid transition temperature at atmospheric pressure TVE0 represents the low temperature fluidity of lubricating oil, which is estimated from the occurrence of photo elastic effect by lowering the temperature using liquid nitrogen. Sound velocity in lubricating oil is measured using Sing around technique. Then the adiabatic Bulk modulus K is calculated from the measured sound velocity. A relation is found between the adiabatic bulk modulus and the viscoelastic solid transition temperature of lubricating oil. The relation depends on the molecular structure of lubricating oil. The oils of a group belong to almost same molecular structure, follows the same relation. For same molecular structure TVE0 decreases as decreasing the adiabatic bulk modulus of lubricating oil. It is also found that, the viscoelastic solid transition temperature of blend oils can be predicted from the base oils’ TVE0 and K.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 43, Issues 5–6, May–June 2010, Pages 1043–1047
نویسندگان
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