VIBRATION ANALYSIS OF FLEXIBLE COUPLING FOR ENGINE AND GEARBOX OF NAVAL SHIP PROPULSION SYSTEM

Abstract

ABSTRACT
In reciprocating-rotating machines, flexible couplings are widely used in many applications, such as diesel engines and gearboxes. Vibration monitoring is highly capable of detecting any abnormalities in flexible couplings before failure occurs. In this paper, vibration measurement was performed at sea on the flexible coupling for a marine diesel engine and gearbox to predict the vibration spectra at various motor speeds and running hours. The vibration spectra captured for both the engine and gearbox at various speeds were analysed based on different running hours, with the measurements found to have high level of accuracy. Based on the procedure developed in this experimental work, condition monitoring (CM) for flexible couplings for marine diesel engine and gearbox systems can be developed in the future.
Keywords: Flexible coupling; diesel engine; gearbox; vibration spectra; motor speed.

Description