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matures, new avenues for unlocking in- bilities of digitalization and the Internet uploaded direct from ocean going as- sight from the data are opening up, es- of Things are bringing new life to stress sets, Light Structures can help to verify pecially as maritime digitalization takes and fatigue monitoring data though, and or refute complex vessel designs on hold. Improved fatigue measurements, nowhere is this more important than ef- an on-going basis. Over time, this will calculated as a result of monitored de- forts to maximize operational lifetimes contribute to building even safer, more ? ection and vibrations is perhaps the of multi-million-dollar maritime assets. effective and less costly ships and mari- most advantageous of the emerging With online access to SENSFIB data time assets. Further, through digitaliza- uses for structural stress data, especially when applied to verify the design num- bers of expensive, one-of-a-kind vessels or to improve asset management across a large ? eet of identical, or similar ships.

Comparison of actual fatigue life with design fatigue life is a standard function in SENSFIB systems. Results are nor- mally presented based on the latest half hour of data (single point in time) with a bar graph, and the time history of the comparison implemented as an onshore function. A graphical representation of the timeline can be implemented on- board as a custom function in the SENS-

FIB operator station and in case there is a signi? cant difference between the ac- tual fatigue life and the design life, the system can provide the user with advice on the cause of this difference.

The standard function is to present the overall fatigue life calculation together with the contribution due to wave load- ing (included in design life) and contri- butions due to vibrations (not included in design life). With access to a full set of design parameters and environmental data, including wave data, it is possible to extend the advisory function to in- clude a comparison of the actual loading conditions with the loading conditions used for design life calculations, as well as a comparison of the actual wave scat- ter with the design wave scatter.

Unlocking Data

To date, fatigue calculations from stress monitoring measurements have been somewhat constrained because the raw data would normally have to be hand delivered on back-up media to the shore of? ce, and then analyzed or applied in what is essentially, an opera- tional silo. Lower cost satellite connec- tivity and the deeper integration possi- www.marinelink.com 25

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