Today, vegetable oils are being considered for their suitability as industrial lubricant. One of
the main problems of vegetable oils is their poor performance when working at high …

Vegetable oil was one of the main sources of lubricating oil before the discovery of
petroleum. Nowadays, due to vegetable oil's poor performance at high temperatures and …

In hydrodynamic lubrication, the pressure condition of the fluid is critical to ensure good
performance of the lubricated machine elements such as journal bearings. In the present …

Effective cooling of water by using high frequency ultrasound waves in two concentric
straight tubes was investigated. The outer tube was equipped with eight 1.7 MHz ultrasound …

The precise prediction of a rotor against instability is needed for avoiding the degradation or
failure of the system's performance due to the parametric variabilities of a bearing system. In …

The objective of this paper is to explore the relationship between the characteristics of
plastic particles in suspension and acoustic impedance spectrum and to present a novel non …

The apparent viscosity of oils in the thin layers that exist in machine elements such as gears
and bearings is very different to that in the bulk. In addition, oils in lubricating layers are …

An axial groove is a common supply method for distributing lubricant within a journal
bearing. Lubricant is generally fed at a specific supply pressure to ensure that the journal …

One method that shows potential for non-invasive oil film measurement is the use of
ultrasonic reflection. In the current work, ultrasonic transducer is coupled to the outside of a …

In hydrodynamic lubrication, the pressure condition of the fluid is critical to ensure good
performance of the lubricated machine elements such as journal bearings. In the present …