In parallel with the evolution of the technologies in every industrial field, also the maintenance has been involved in a rapid development and improvement of all that it concerns. Maintenance encloses various and different areas of industrial sectors, from the economy to the security, from the management to the optimization of the use of resources, and therefore over the years it has held a greater and greater importance until it has been established as one of the major strategies to focus on. The increase of reliability and accuracy of algorithms in the Artificial Intelligence field has led several companies to experiment the application of such algorithms in solving maintenance issues.