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Preventive maintenance of equipment and applications in Maritime industry

Andrianopoulos Panagiotis-Michail

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Summary

The purpose of this thesis is the description of the way in which the Digital Twin (DT) technology is used for the preventive maintenance of equipment, as well as how this method is applied in the Maritime industry. First, a brief description of the dominant approaches to equipment maintenance and an overview of the maintenance procedures governing the marine industry are provided. The concept of preventive maintenance is differentiated into periodic and predictive maintenance, and it is clarified that the content of this work focuses on predictive maintenance. At the same time, it mentions the main characteristics of the ships as well as their main equipment. Next, the digital twin is described with an emphasis on its five structural characteristics and the main technologies that support them as they are presented in modern literature. Then follows the analysis of the method of predictive maintenance with the concept: "Prognostics and Health Management", describing in detail the process and highlighting the way in which DT technology is integrated. Here, the three main techniques are presented: vibration analysis, thermography, ultrasound, applied by this particular method. Finally, reference is made to the integration of predictive maintenance at the operational level with indicative applications of modern maritime information systems.

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