... investigations on the tribological properties of lubricating oils with and without nanoferromagnetic particles have been performed. This work investigates the tribological properties of Mn 0.78 Zn 0.22 Fe 2 O 4 nanoferromagnetic as additive in 46 # turbine oil using a four-ball friction and wear tester...

... bench and some preliminary experimental results. A rotor of 1 kg mass and 37 mm diameter is rotated up to 75,000 rpm by an air turbine machined on the rotor. Capacitance probes, placed in two radial planes, allow orbit scanning of both the rotor and the bushing at different rotating speeds and suitable...

... by the Tribology Division January 24, 2003; revised manuscript received July 1, 2003. Associate Editor: L. San Andre´s. 26 October 2003 24 January 2003 01 July 2003 13 01 2004 wear resistant coatings lubrication wear friction foils machine bearings turbines plasma arc sprayed...

... measurement aerodynamics machine bearings turbines damping lubrication cavitation Squeeze film dampers (SFDs) provide force isolation and energy dissipation in high-speed turbomachinery. SFD design, however, remains empirical at best since predictive models derived from Classical Lubrication do...

.... 27 October 2002 14 February 2002 02 July 2002 19 03 2003 seals (stoppers) mechanical contact sliding friction turbines rotors fibres bending stress analysis Recently, engineers that are engaged in the design of turbomachinery for propulsion and electrical power...

... of preload effects of a segment type vertical guide bearing on the bearing metal temperature and the shaft vibration, in a hydraulic pump-turbine. Investigations have been performed not only by in-situ measurement but also by theoretical analysis. A guide bearing consists of eight pads and runs bi...

.... The flow pressure is regulated before the air enters an axial turbine flowmeter, where the volumetric flow rate is measured. To calculate air density in the flowmeter, a pressure tap near the exit of the flowmeter was used to measure static pressure, and a 0.25 mm K-type thermocouple was inserted...