Greased bearings in electric motors (EMs) are subject to a wide range of operational requirements and corresponding micro-environments. Consequently, greases must function effectively these conditions. Here, the tribological performance four market-available EM was characterized by measuring friction wear silicon nitride sliding on hardened 52100 steel. The evaluated had similar viscosity grade...

Abstract One of the promising methods for increasing resistance polymer composite materials to high-speed impact is use protective shockproof coatings. At same time, over past two decades, polyurea have been gaining noticeable popularity among such This work devoted study effect coating 1.2 mm thickness on ballistic characteristics glass-fibre reinforced layered 8.5 thickness. During experiment...