Subsurface crack networks surrounded by microstructural alterations, named as “White
Etching Cracks”(WEC), lead to wind turbine gearbox bearing (WTGB) premature failures …

This paper is focused on the experimental determination of the frictional properties of bolts,
following the ISO 16047 International Standard. The campaigns involved M14 X 2 8.8 class …

Smearing damage was created on cylindrical roller bearings (CRBs) using a laboratory test
protocol that required alternating the load zone direction according to a square wave …

Micropitting is a type of surface fatigue damage that occurs in rolling–sliding contacts
operating under thin oil film conditions. Application of black oxide (BO) coating to steel …

Black oxide chemical conversion treatment of steel surfaces was originally developed as a
low-cost method to improve the corrosion resistance of the base material. Over time, this …

Bored barrels are one of the primary parts of small arms. In order to enhance the service life
of bored barrels, specimens of 1Cr12Ni2WMoVNb (GX-8) steel bored barrels were treated …

The onset of smearing damage was studied under controlled conditions in a custom test rig
that simulates the passage of a rolling element through loaded and unloaded zones of a …

Surface-initiated damage increasingly limits the service life of rolling element bearings in
challenging environments. In particular, operation in the boundary lubrication regime and/or …

AISI 52100 and 440C bearing steels were nitrided in conventional plasma (CPN) and
pulsed plasma (PPN) consisting of 0.33 and 1 N2/H2 gas ratios at temperature of 500° C for …

Aluminium, magnesium, copper, steels and their alloys are generally used in vast
applications like automobile, ship, architecture, aerospace due their properties of high …