PSI - Issue 45

Mark Mogeke et al. / Procedia Structural Integrity 45 (2023) 36–43 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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gap. However, the cost and management of IHM limits their deployment. Therefore, virtual hull monitoring (VHM), whereby ship-board/navigational data is fused with available wave data, has been proposed. For reliable implementation of VHM, research on the required resolution of the operational profiles and the influence of different data sources required. As such, the utility of VHM for a naval HSLC was studied, as part of a wider effort to establish the external validity of the VHM approach. The activities undertaken included the development of a framework to extract and couple wave hindcasts to ship navigational data, and a comparison of the wave data obtained from a wave buoy deployed during sea trials and from different wave hindcasts. Further, the measured and computed stress responses based on the different wave hindcasts during sea trials and open ocean transits were compared. The results of the analysis show that wave data source selection is critical for accurate structural response prediction. Therefore, implementation of VHM should include checks of the validity of the extracted wave data. Of the wave parameters considered, the stress responses in the ship are most sensitive to the significant wave height. Acknowledgements The authors would like to thank Stefan Zieger and Grant Smith, Bureau of Meterology and Ian Thompson, Defence Research and Development Canada for their assistance. The authors are also grateful to the Cooperative Research Ships iSHIP working group for their support. References Chune, S. L. (2019) Product User Manual for Global Ocean Waves Multi Year Product GLOBAL_REANALYSIS_WAV_001_032 . European Union, Copernicus Marine Service Chune, S. L., et al. (2020) Global High Resolution Production Centre GLOBAL_REANALYSIS_WAV_001_032 . European Union, Copernicus Marine Service Collette, M. What is a Digital Twin? (2021) [Accessed 15 Jan 2021]; Available from: www.youtube.com/ watch?v=emmzycj_rf0&feature=youtu.be. DRS Defense Solutions (2013) MAESTRO 11.0.0 . Stevensville, Durrant, T., Hemer, M. and Trenham, C. (2014) A Global Wave Hindcast focussed on the Central and South Pacific . Melbourne, Australia Centre for Australian Weather and Climate Research. Guachamin-Acero, W. and Portilla-Yandún, J. (2021) A study on vessel fatigue damage as a criterion for heading selection by application of 2D actual bimodal and JONSWAP wave spectra . Ocean Engineering 226 Hageman, R., et al. (2020) ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering . Vol. Volume 2A: Structures, Safety, and Reliability Hulkkonen, T., Manderbacka, T. and Sugimoto, K. (2019) Digital Twin for Monitoring Remaining Fatigue Life of Critical Hull Structures. In: Conference on Computer Applications and Information Technology in the Maritime Industries (COMPIT2019), Tullamore, Ireland Ma, M., Zhao, C. and Hughes, O. (2014) A practical method to apply hull girder sectional loads to full-ship 3D finite-element models using quadratic programming . Ships and Offshore Structures 9 (3) 257-265 Magoga, T., et al. (2016) Comparison between Fatigue Life Values Calculated Using Standardised and Measured Stress Spectra of a Naval High Speed Light Craft. In: 13th International Symposium on th Practical Design of Ships and Other Floating Structures (PRADS16), Copenhagen, Denmark: October Magoga, T., et al. (2019) Interdependencies between variables in fatigue analysis of a weight-optimised naval ship . Procedia Structural Integrity 22 2019/01/01/ 267-274 Milne, I. A. and Zed, M. (2018) Full-scale validation of the hydrodynamic motions of a ship derived from a numerical hindcast . Ocean Engineering 168 83-94 QinetiQ North America (No date) Micro Air-Launced Expendable Wave Buoy Operators Manual Version 1.03 . Schirmann, M. L., Collette, M. D. and Gose, J. W. (2020) Significance of wave data source selection for vessel response prediction and fatigue damage estimation . Ocean Engineering 216 Thompson, I. (2020) Virtual hull monitoring of a naval vessel using hindcast data and reconstructed 2-D wave spectra . Marine Structures 71 2020/05/01/ 102730 Thompson, I., et al. (2017) STRUC_R v. 2.4 User’s Manual . [Unpublished Technical Note] Tolman, H. L. (1991) A Third-Generation Model for Wind Waves on Slowly Varying, Unsteady, and Inhomogeneous Depths and Currents . Journal of Physical Oceanography 21 (6) 782-797 Zimmerman, P., Gilbert, T. and Salvatore, F. (2017) Digital engineering transformation across the Department of Defense . The Journal of Defense Modeling and Simulation 16 (4) 325-338