Karakteristik Emisi Akustik Pada Bantalan Luncur Bola Menyelaras Sendiri Karena Perubahan Beban Radial dan Kecepatan

Abstract

Self aligning spherical journal bearing is a plain bearing which has spherical surface contact; it can be applied in the high power industrial machinery such as steam turbines, centrifugal compressor and large pumps.  This type of bearing is simple, a high load carrying capacity and accommodate a misalignment problems. However, abnormal operating conditions in the journal bearings will degrade machine performance, decrease life time service and increase operating and maintenance cost. Moreover, it may cause accelerated deterioration and unexpected failure which are highly damaging and dangerous in both economic, engineering and safety issues. Beside vibration, acoustic emission analysis is an effective method in machinery condition monitoring especially for journal bearing condition monitoring. This paper discus the acoustic emission responses in the journal bearings based on asperity contact between the journal and the bearing. In this study founded that the energy released or AE amplitude is influenced by sliding speed, external force, number of asperity contact and contact between the journal and bearing characteristic. When the radial load and speed are increased the amplitude of AE emission response increase as well.