P. Raharjo

  • Citations Per Year
Learn More
Numerous techniques for rolling bearing monitoring have been presented recently but the challenge lies in finding a reliable and price efficient monitoring system capable of providing an early alarm of bearing defects, thus, the purpose of this paper is to develop a more advanced approach using vibration signal to bearings monitoring based on TESPAR (Time(More)
Self aligning spherical journal bearing is a type of plain bearings which has spherical surface contact. This type of bearing can accommodate a misalignment problem. The journal bearing faults degrade machine performance, decrease life time service and unexpected failure which are dangerous for safety issues. Surface vibration (SV), airborne sound (AS) and(More)
Journal bearings are widely used to support the rotor of industrial machinery with high loads, such as steam turbines, centrifugal pump and compressors. The problem of journal bearings can cause catastrophic failures, results in huge economic loss and create high safety risks. It is necessary to develop effective condition monitoring technologies to detect(More)
  • P. Raharjo, Dedi Budiman Hakim, Adler Haymans Manurung, Tubagus Nur Ahmad Maulana
  • 2014
Capital has an important role in maintaining safety of banks and in order to create a sound banking system. Banks are required to have a sufficient amount of capital, both to support its business expansion as well as a buffer to prevent any unexpected loss that banks might face and absorb losses arising from a variety of risks. Eventhough consists of four(More)
A Self aligning spherical journal bearing is a plain bearing which has spherical surface contact that can be applied in high power industrial machinery. This type of bearing can accommodate a misalignment problem. The journal bearing faults degrade machine performance, decrease life time service and cause unexpected failure which are dangerous for safety(More)
High power industrial machinery such as steam turbines and large pumps use journal bearings as rotor supports because this type of bearing is a high load carrying capacity. However, abnormal operating conditions in the journal bearings will degrade machine performance, shorten life time and increase the risk of operation. Bearing condition monitoring can(More)
  • P. Raharjo, Dedi Budiman Hakim, Adler Haymans Manurung, Tubagus Nur Ahmad Maulana
  • 2015
Capital plays important role to support the operational of the banks and to create a sound banking system in aggregate. For this reason, the banks are required to have a sufficient amount of capital, both to support its business expansion as well as a buffer to prevent and to absorb any unexpected losses. This paper analyzes determinants of capital ratio of(More)
  • 1