The advancement on Wireless Sensor Networks for vibration monitoring presents important possibilities for helicopter rotor health and usage monitoring. While main rotor blades account for the main source of lift for helicopters, rotor induced vibration establishes an important source for understanding the rotor performance and blade condition. A discussion on the dual character of blades as rot...

Engine health monitoring has been an area of intensive research for more than three decades. Numerous methods have been developed with the goal of determining a faithful picture of the engine condition. It becomes largely admitted that a practical implementation of a monitoring tool will rely on an adequate fusion of some techniques. In this framework, the present contribution proposes an origi...

In Chapters 15 and 16, the measurement and signal processing techniques, transducers, signal conditioners and signal analysis equipments are described, which are used in the rotating machinery condition monitoring. It is very important to display the measured signal in convenient form so as to be useful for the interpretation of the condition of rotating machinery. In the present chapter, by lo...

Many applications benefit from the ability to monitor the value of conditions over large, possibly distributed data sets. However, mechanisms to achieve this typically impose a performance overhead that the owners and users of such systems may be unwilling to accept. A compromise solution is to allow system owners to decide at what times they will allow computational resources to be given over ...

apart from regular wheel wear such as decreasing wheel diameters and reduced flange thicknesses and heights, wheel flats (wf) and oval wheels (or oor, out-of-roundness) are the most common wheelset problems for railway vehicles. within the fp7 research project “saferail”, apt has developed an innovative wheelset monitoring system so-called “wheel flat and out of roundness monitoring (worm) syst...

In order to consistently produce quality parts, many aspects of the manufacturing process must be carefully monitored, controlled, and measured. The methods and techniques by which to accomplish these tasks has been the focus of numerous studies in recent years. With the rapid advances in computing technology, the complexity and overhead that can be feasibly incorporated in any developed techni...

Temporal analysis of ecological monitoring data is of critical importance in order to demonstrate whether management actions are having the desired effects, and whether there are changes in environmental condition. Over recent years in Australia, temporal trend analyses of water quality data by techniques such as Generalised Additive Modelling have become commonplace. In contrast, analyses of t...

Persuasive systems that combine numerous behavior change techniques such as self-monitoring and social comparison, expose users to multiple influences. These influences can in turn generate motivation and/or stress. In a previous study with users of three commercial applications from the area of sports, we found that users generated a series of strategies to manage these multiple influences in ...

Determining the aging state of low-voltage nuclear power plant cables using a nondestructive and reliable condition monitoring technique is highly desirable as experience multiple stresses during service period. This paper deals with implementation investigation such techniques, which can detect overall instrumentation control (I&C) cables, are subjected to accelerated thermal aging. The di...