Rotorcraft design is challenging with respect to fatigue considering the wide range of loads to which it is subjected. There has been a continuous requirement from the helicopter community in terms of increased flight safety, increased life of components and decreased maintenance and inspection frequency. Structural Health Monitoring (SHM) has definitely catered to this requirement by introduci...

Process control performance is a cornerstone of operational excellence in the refining, petrochemicals, pulp and paper and the mineral processing industry. Control performance assessment and monitoring applications have become mainstream in these industries and are changing the maintenance methodology surrounding control assets from predictive to condition based. The large numbers of these asse...

Scheduled maintenance procedures for civil aircraft structures went through decades of evolution from hard time replacement to timebased inspection. Currently, different inspection tasks are carried out at predetermined intervals to check the condition of structural components. If the condition of the structure exceeds a certain threshold, repair activities are initiated. The two key parameters...

Most existing condition based maintenance (CBM) work reported in the literature only focuses on determining the optimal CBM policy for single units. Replacement and other maintenance decisions are made independently for each component, based on the component’s age, condition monitoring data and the CBM policy. In this paper, a CBM optimization method is proposed for multi-component systems, whe...

Condition Based Maintenance (CBM) aims at regulating maintenance scheduling based on data analyses and system condition monitoring. Clear advantages of optimizing maintenance scheduling include relevant cost savings and improved safety and plant availability. A critical aspect is the integration of CBM strategies with condition monitoring technologies for handling a wide range of information so...

By utilizing condition monitoring information collected from wind turbine components, condition based maintenance (CBM) strategy can be used to reduce the operation and maintenance costs of wind power generation systems. The existing CBM methods for wind power generation systems deal with wind turbine components separately, that is, maintenance decisions are made on individual components, rathe...

Developments in sensor equipment and the Internet of Things increasingly allow production facilities to be monitored controlled remotely real-time. Organizations can exploit these opportunities reduce costs improve reliability by employing condition-based maintenance (CBM) policies. Another recently proposed option is adopt (CBP) policies that control deterioration dynamically adapting rate. Th...

The paper proposes a methodology for reliable design and maintenance of wind turbine rotor blades using a condition monitoring approach and a damage tolerance index coupling the material and structure. By improving the understanding of material properties that control damage propagation it will be possible to combine damage tolerant structural design, monitoring systems, inspection techniques a...

The wind industry has had a chronic problem with the reliability of its gearboxes [1], [2]. Experience has shown that premature gearbox failure is a leading maintenance cost driver that can easily consume the profit margin from a wind turbine operation. Condition monitoring is already understood to have potential to mitigate this risk by managing gearbox maintenance through the promises of reli...

Modern wind turbines operate in continuously transient conditions, with varying speed, torque, and power based on the stochastic nature of resource. This variability affects not only operational performance system, but can also affect its integrity under service conditions. Condition monitoring continues to play an important role achieving reliable economic operation turbines. paper reviews cur...