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MAROFF-2-Maritim virksomhet og offsh-2

Novel Failure Monitoring System for Marine Applications by including Acoustic Emission

Alternative title: Nytt tilstandsovervåkningssystem for marin anvendelse med akustisk emisjon.

Awarded: NOK 12.0 mill.

Gear systems are critical in maritime vessels and wind turbines, and damage of components in these systems may lead to catastrophic and costly failure. Today, gears and bearings are often monitored by frequent inspections and manual condition monitoring. However, closed gears are not easily inspected, and in autonomous and remote-controlled vessels and subsea installations, remote condition monitoring is the only option over long periods of time. The current vibration-based condition monitoring systems for rotating machinery responds on the detectable vibrations caused by severe material failure such as large cracks or surface defects, and thus have limited sensitivity and capability for detecting sub surface failures and pre-failure damage. Therefore, when damage is detected, total failure is often imminent, leaving little or no time for adjusting the operating parameters to avoid further damage. The AEMON project is developing a novel condition monitoring system by the application of Acoustic Emission for detection of damage prior to what can be detected by vibration monitoring. AEMON seek to combine vibration and AE signals to map the whole degradation curve and use this to estimate the remaining useful lifetime of a component. The industry partners Kongsberg Maritime by it's divisions in Trondheim and Ulsteinvik, Equinor Energy and Island Offshore represent manufacturers and end users of propulsion systems and condition monitoring systems. Together with SINTEF and NTNU, the partners perform research on AE failure monitoring in the lab and in the field, signal processing, materials characterization and development of the CM system. The project cooperates internationally with the University of Southampton, the UK based engineering company Ricardo and the German bearing producer Schaeffler. In the project algorithms have been developed that have enabled Kongsberg Maritime's AE technology to detect damage below the surface of material components similarly to components for rotating equipment. The AE technology is part of KM's existing hardware and software components that are currently part of the product portfolio for condition monitoring of rotating machinery for maritime applications. Including monitoring of propulsion systems and other equipment for boats where critical components that provide and stock are monitored for safe operational conditions.

Bearings and gear boxes are critical components in maritime vessels and wind turbines, and damage in these components may lead to catastrophic and costly failure. Today, bearings and gears are often monitored by frequent inspections and manual condition monitoring. However, closed gears are not easily inspected, and in autonomous and remote-controlled vessels and subsea installations, remote condition monitoring is the only option over long periods of time. The current vibration based condition monitoring systems for rotating machinery responds on the detectible vibrations caused by severe material failure such as large cracks or surface defects, and thus have limited sensitivity and capability for detecting pre-failure damage. When damage is detected, total failure is often imminent, leaving little or no time for adjusting the operating parameters to avoid further damage. Therefore, the AEMON project will develop a novel condition monitoring system by the application of Acoustic Emission for detection of damage prior to what can be detected by vibration monitoring. Earlier warning of damage prior to a detrimental failure will enable more reliable estimates of the remaining useful lifetime and be a tool for decision support. AEMON will also seek to combine vibration and AE signals to map the whole degradation curve and use this to estimate the remaining useful lifetime of a component. The industry partners Kongsberg Maritime, Rolls-Royce Marine, Equinor Energy and Island Offshore represent manufacturer of propulsion systems, condition monitoring systems and the end users of both. Together with SINTEF and NTNU, the partners will perform research on AE failure monitoring in the lab and in the field, signal processing, materials characterization and development of the CM system. The project will cooperate internationally with universities in England and Russia and the UK based engineering company Ricardo and the German bearing producer Schaeffler.

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Funding scheme:

MAROFF-2-Maritim virksomhet og offsh-2