The
Intrinsic Relationship Between Color Variation and Performances of the
Deteriorated Aviation Lubrication Oil
Jun Ma1,*, Shaojun Ruan1,
Jianqiang Hu1,
Yuanbao Sun1, Yiwei Fei1, Xufeng
Jiang1, Shibao Dong1,
Teng Chen1, Nan
Wu1, 2, *
1Air Force Logistics College, Xuzhou, Jiangsu, 221000,
P. R. China;
2School
of Pharmacy, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, P. R.
China.
Abstract:Dose
the blackened lubrication oil needs to be replaced for flying safety?
Since there is very limited room for inaccurate assessment of oil
quality due to strict flying safety standards, much aviation lubrication
oil is disposed in advance long before their service life. More
important, aircrafts still face the fatal challenges from unpredictable
lubrication oil deterioration.
Color change is surely a significant signal to diagnose the quality of
lubrication oils. Based on the
colorimeter,
the color numbers of the testing lubrication oils are measured in this
paper to identify the color variation degree of the oxidized lubrication
oils. Then the molecular structures of the oxidized lubrication oils are
investigated to find the intrinsic relationship between the oxidation
products and color numbers. Based on key performances of the oxidized
oil samples, the oil quality is undoubtfully deteriorated which is
coincident with the variation of color number. The color numbers of the
used aviation lubrication oils could provide an alternative way to
readily and quickly measure the decline degree and residual lifetime.
Keywords:Color
Variation; Lubricating Oils; Oxidation Products; Color Number; Molecular
Structure