Investigation Of Contamination In Ball Bearing Operated Under Hexagonal Boron Nitride (hBN) Nanoparticle Additives Mixed With Engine Oil

Ali, Alexander (2017) Investigation Of Contamination In Ball Bearing Operated Under Hexagonal Boron Nitride (hBN) Nanoparticle Additives Mixed With Engine Oil. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 Pages) Investigation Of Contamination In Ball Bearing Operated Under Hexagonal Boron Nitride (hBN) Nanoparticle Additives Mixed With Engine Oil.pdf - Submitted Version Download (522kB)

Abstract

Rolling element bearings are widely used as mechanical structures which support the shafts, axles, wheels or any rotating components on the machines. As the machines continuously operating under a long period of time, a high speed and a heavy load, consequentially cause early fatigue failure to the bearings. The presence of contaminants inside the lubricant is probably one of the main reasons for this phenomenon. Considering to this problem, the potential use of hexagonal boron nitride (hBN) as additive in SAE 15W40 diesel engine oil was studied. An experimental work was conducted on a test rig in order to identify the contaminant characteristics and the effect of different percentages concentration volume of hBN mixed with diesel engine oil in producing contaminations and wears on several conditions of rolling element bearings. Oil View Analyser indicates that the contamination index and wear rate are reduced significantly by increasing the percentage of hBN concentration volumes. The contamination and wear rate are lowest at 0.5 % concentration volume of hBN. Besides that, microscopic examination result shows the presence of contaminants and wears are typically in the form of fibers and ferrous metals respectively. Therefore, performance of hBN nanoparticles as contaminant, wear and friction reducing agent is clearly relevant.

Actions (login required)

View Item