Some systems may spend most of their time in storage, but once needed, must be fully functional. Slow degradation occurs when the system is in storage, so to ensure the functionality of these systems, condition monitoring is usually conducted periodically to check the condition of the system. However, taking the condition monitoring data may require putting the system under real testing situati...

Some large wind turbines use a synchronous generator directly-coupled to the turbine. This paper considers condition monitoring and diagnosis of mechanical and electrical faults in such a variable speed machine. The application of wavelet transforms is investigated because of the disadvantages of conventional spectral techniques in processing instantaneous turbine signals. In this paper a new c...

Hydraulic brakes in automobiles play a vital role for the safety on the road; therefore vital components in the brake system should be monitored through condition monitoring techniques. Condition monitoring of brake components can be carried out by using the vibration characteristics. The vibration signals for the different fault conditions of the brake were acquired from the fabricated hydraul...

This paper describes and compares three different state-of-the-art condition monitoring techniques: first principles, feature extraction, and neural networks. The focus of the paper is on the application of the techniques, not on the underlying theory. Each technique is described briefly and is accompanied by a discussion on how it can be applied properly. The discussion is finished with an enu...

The mechanical properties of bridge bearings gradually deteriorate over time resulting from daily traffic loading and harsh environmental conditions. However, structural health monitoring in-service is rather challenging. This study presents a bearing condition assessment framework which integrates the vibration data non-contact interferometric radar (i.e. IBIS-S) simplified analytical model. U...

The main scope of this paper is to present a summary of the monitoring methods, signal analysis and diagnostic techniques for tool wear and failure monitoring that have been proposed, tested or reported in literature up today. Initially, the necessity for planned tool condition monitoring in modern manufacturing is being discussed. Then, there is a discussion about the difference between soft a...

The rapid rise in railroad transport across the world demands an improved service form of safety, comfort, reliability and cost-effectiveness. For improvement reliability, efficiency; sophisticated condition monitoring systems (CMS) have become important part modern railway operations. CMS for vehicles involves techniques including model-based signal-based detection faults which assists prevent...