{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,2]],"date-time":"2026-06-02T13:58:44Z","timestamp":1780408724672,"version":"3.54.1"},"reference-count":52,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2024,5,9]],"date-time":"2024-05-09T00:00:00Z","timestamp":1715212800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100006758","name":"Bureau of Safety and Environmental Enforcement","doi-asserted-by":"publisher","award":["140E0119C0003"],"award-info":[{"award-number":["140E0119C0003"]}],"id":[{"id":"10.13039\/100006758","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100006758","name":"Bureau of Safety and Environmental Enforcement","doi-asserted-by":"publisher","award":["AmplifyMass"],"award-info":[{"award-number":["AmplifyMass"]}],"id":[{"id":"10.13039\/100006758","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012441","name":"Massachusetts Clean Energy Center","doi-asserted-by":"publisher","award":["140E0119C0003"],"award-info":[{"award-number":["140E0119C0003"]}],"id":[{"id":"10.13039\/100012441","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100012441","name":"Massachusetts Clean Energy Center","doi-asserted-by":"publisher","award":["AmplifyMass"],"award-info":[{"award-number":["AmplifyMass"]}],"id":[{"id":"10.13039\/100012441","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Offshore wind-turbine (OWT) support structures are subjected to cyclic dynamic loads with variations in loadings from wind and waves as well as the rotation of blades throughout their lifetime. The magnitude and extent of the cyclic loading can create a fatigue limit state controlling the design of support structures. In this paper, the remaining fatigue life of the support structure for a GE Haliade 6 MW fixed-bottom jacket offshore wind turbine within the Block Island Wind Farm (BIWF) is assessed. The fatigue damage to the tower and the jacket support structure using stress time histories at instrumented and non-instrumented locations are processed. Two validated finite-element models are utilized for assessing the stress cycles. The modal expansion method and a simplified approach using static calculations of the responses are employed to estimate the stress at the non-instrumented locations\u2014known as virtual sensors. It is found that the hotspots at the base of the tower have longer service lives than the jacket. The fatigue damage to the jacket leg joints is less than 20% and 40% of its fatigue capacity during the 25-year design lifetime of the BIWF OWT, using the modal expansion method and the simplified static approach, respectively.<\/jats:p>","DOI":"10.3390\/s24103009","type":"journal-article","created":{"date-parts":[[2024,5,9]],"date-time":"2024-05-09T10:31:16Z","timestamp":1715250676000},"page":"3009","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Fatigue Analysis of a Jacket-Supported Offshore Wind Turbine at Block Island Wind Farm"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2417-717X","authenticated-orcid":false,"given":"Nasim","family":"Partovi-Mehr","sequence":"first","affiliation":[{"name":"Department of Civil and Environmental Engineering, Tufts University, Medford, MA 02155, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John","family":"DeFrancisci","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Tufts University, Medford, MA 02155, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohsen","family":"Minaeijavid","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Tufts University, Medford, MA 02155, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8462-4608","authenticated-orcid":false,"given":"Babak","family":"Moaveni","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Tufts University, Medford, MA 02155, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel","family":"Kuchma","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Tufts University, Medford, MA 02155, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9041-6063","authenticated-orcid":false,"given":"Christopher D. P.","family":"Baxter","sequence":"additional","affiliation":[{"name":"Depts. Ocean\/Civil and Environmental Engineering, University of Rhode Island, Kingston, RI 02881, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3764-6441","authenticated-orcid":false,"given":"Eric M.","family":"Hines","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Tufts University, Medford, MA 02155, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aaron S.","family":"Bradshaw","sequence":"additional","affiliation":[{"name":"Depts. Ocean\/Civil and Environmental Engineering, University of Rhode Island, Kingston, RI 02881, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,5,9]]},"reference":[{"key":"ref_1","unstructured":"House, T.W. (2021). FACT SHEET: Biden Administration Jumpstarts Offshore Wind Energy Projects to Create Jobs."},{"key":"ref_2","unstructured":"Kuffner, A. (2023). Two major offshore wind farms near RI hit a key milestone. What\u2019s next for the projects?. Provid. J., Available online: https:\/\/www.providencejournal.com\/story\/news\/environment\/2023\/06\/27\/south-fork-wind-farm-and-vineyard-wind-hit-major-construction-milestone\/70357074007\/."},{"key":"ref_3","unstructured":"U.S. Department of Energy (2022). Offshore Wind Energy Strategies."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"118","DOI":"10.1016\/j.oceaneng.2019.02.048","article-title":"A systematic Failure Mode Effects and Criticality Analysis for offshore wind turbine systems towards integrated condition based maintenance strategies","volume":"176","author":"Scheu","year":"2019","journal-title":"Ocean. Eng."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"303","DOI":"10.1098\/rsta.2006.1928","article-title":"An introduction to structural health monitoring","volume":"365","author":"Farrar","year":"2007","journal-title":"Philos. Trans. R. Soc. A Math. Phys. Eng. Sci."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Farrar, C.R., and Worden, K. (2012). Structural Health Monitoring: A Machine Learning Perspective, John Wiley & Sons.","DOI":"10.1002\/9781118443118"},{"key":"ref_7","unstructured":"Svendsen, B.T. (2021). Numerical and Experimental Studies for Damage Detection and Structural Health Monitoring of Steel Bridges. [Ph.D. Thesis, Norwegian University of Science and Technology]."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"e1619","DOI":"10.1002\/tal.1619","article-title":"Transfer function-based Bayesian damage detection under seismic excitation","volume":"28","author":"Vahedi","year":"2019","journal-title":"Struct. Des. Tall Spec. Build."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Partovi-Mehr, N., Branlard, E., Song, M., Moaveni, B., Hines, E.M., and Robertson, A. (2023). Sensitivity Analysis of Modal Parameters of a Jacket Offshore Wind Turbine to Operational Conditions. J. March Sci. Eng., 11.","DOI":"10.3390\/jmse11081524"},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Partovi-Mehr, N., Branlard, E., Bajric, A., Liberatore, S., Hines, E.M., and Moaveni, B. (2022). Sensitivity of Modal Parameters of an Offshore Wind Turbine to Operational and Environmental Factors: A Numerical Study.","DOI":"10.3390\/jmse11081524"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"110425","DOI":"10.1016\/j.ymssp.2023.110425","article-title":"Joint parameter-input estimation for digital twinning of the Block Island wind turbine using output-only measurements","volume":"198","author":"Song","year":"2023","journal-title":"Mech. Syst. Signal Process."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"117022","DOI":"10.1016\/j.engstruct.2023.117022","article-title":"One year monitoring of an offshore wind turbine: Variability of modal parameters to ambient and operational conditions","volume":"297","author":"Song","year":"2023","journal-title":"Eng. Struct."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"108605","DOI":"10.1016\/j.soildyn.2024.108605","article-title":"A case study of foundation damping in a piled offshore wind jacket structure","volume":"180","author":"Bradshaw","year":"2024","journal-title":"Soil Dyn. Earthq. Eng."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"119430","DOI":"10.1016\/j.renene.2023.119430","article-title":"System identification and finite element model updating of a 6 MW offshore wind turbine using vibrational response measurements","volume":"219","author":"Moynihan","year":"2023","journal-title":"Renew. Energy"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"111229","DOI":"10.1016\/j.ymssp.2024.111229","article-title":"Regularized hidden Markov modeling with applications to wind speed predictions in offshore wind","volume":"211","author":"Haensch","year":"2024","journal-title":"Mech. Syst. Signal Process."},{"key":"ref_16","unstructured":"Ciochetto, D., Baxter, C.D., Bradshaw, A.S., Hu, S.J., Hines, E., Moaveni, B., and Sparrevik, P. (2023). Block Island Structural Monitoring Program."},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Tygesen, U.T., Jepsen, M.S., Vestermark, J., Dollerup, N., and Pedersen, A. (2018, January 17\u201322). The True Digital Twin Concept for Fatigue Re-Assessment of Marine Structures. Proceedings of the ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, Madrid, Spain.","DOI":"10.1115\/OMAE2018-77915"},{"key":"ref_18","unstructured":"Ghoneim, A., Lotsberg, I., Solland, G., Yang, L., Moczulski, M., and Arnesen, K. (2012). Comparison of API, ISO, and NORSOK Offshore Structural Standards, Det Norske Veritas."},{"key":"ref_19","unstructured":"Standards Norway (2012). N-001 Integrity of Offshore Structures, Standards Norway."},{"key":"ref_20","unstructured":"Sparrevik, P.M. (2017). Guidelines for Structural Health Monitoring for Offshore Wind. Turbine Towers & Foundations, Norwegian Geotechnical Institute."},{"key":"ref_21","unstructured":"(2020). Structure Monitoring and Assessment of Wind Turbines and Offshore Stations (Standard No. VDI-4551)."},{"key":"ref_22","unstructured":"(2019). Wind Energy Generation Systems\u2014Part 1: Design Requirements (Standard No. IEC 61400-1)."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"109346","DOI":"10.1016\/j.oceaneng.2021.109346","article-title":"Dynamic analysis of 10 MW monopile supported offshore wind turbine based on fully coupled model","volume":"234","author":"Renqiang","year":"2021","journal-title":"Ocean. Eng."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"105487","DOI":"10.1016\/j.ijfatigue.2020.105487","article-title":"Fatigue reliability of large monopiles for offshore wind turbines","volume":"134","author":"Velarde","year":"2020","journal-title":"Int. J. Fatigue"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"724","DOI":"10.1016\/j.renene.2022.09.093","article-title":"Fatigue reliability of wind turbines: Historical perspectives, recent developments and future prospects","volume":"200","author":"Liao","year":"2022","journal-title":"Renew. Energy"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"64","DOI":"10.1016\/j.prostr.2019.08.010","article-title":"Numerical analysis of pitting corrosion fatigue in floating offshore wind turbine foundations","volume":"17","author":"Moghaddam","year":"2019","journal-title":"Procedia Struct. Integr."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"103505","DOI":"10.1016\/j.marstruc.2023.103505","article-title":"Fatigue life assessment of offshore wind support structures in the presence of corrosion pits","volume":"92","author":"Shamir","year":"2023","journal-title":"March Struct."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"139","DOI":"10.1007\/s40684-015-0018-7","article-title":"Soil-structure interaction on the response of jacket-type offshore wind turbine","volume":"2","author":"Shi","year":"2015","journal-title":"Int. J. Precis. Eng. Manuf. Green Technol."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"119981","DOI":"10.1016\/j.renene.2024.119981","article-title":"Predictive model for fatigue evaluation of floating wind turbines validated with experimental data","volume":"223","author":"Pimenta","year":"2024","journal-title":"Renew. Energy"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"103521","DOI":"10.1016\/j.marstruc.2023.103521","article-title":"Effect of long-term lateral cyclic loading on the dynamic response and fatigue life of monopile-supported offshore wind turbines","volume":"93","author":"Ma","year":"2024","journal-title":"March Struct."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"107971","DOI":"10.1016\/j.engfailanal.2024.107971","article-title":"Re-evaluation of fatigue design curves for offshore wind monopile foundations using thick as-welded test specimens","volume":"158","author":"Mehmanparast","year":"2024","journal-title":"Eng. Fail. Anal."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"117027","DOI":"10.1016\/j.engstruct.2023.117027","article-title":"Physics guided wavelet convolutional neural network for wind-induced vibration modeling with application to structural dynamic reliability analysis","volume":"297","author":"Xu","year":"2023","journal-title":"Eng. Struct."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"173","DOI":"10.1007\/s00466-023-02293-z","article-title":"HiDeNN-FEM: A seamless machine learning approach to nonlinear finite element analysis","volume":"72","author":"Liu","year":"2023","journal-title":"Comput. Mech."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"923","DOI":"10.1016\/j.jsv.2003.10.063","article-title":"Optimal sensor placement methodology for parametric identification of structural systems","volume":"278","author":"Papadimitriou","year":"2004","journal-title":"J. Sound Vib."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"108787","DOI":"10.1016\/j.ymssp.2021.108787","article-title":"Optimal sensor placement for parameter estimation and virtual sensing of strains on an offshore wind turbine considering sensor installation cost","volume":"169","author":"Mehrjoo","year":"2022","journal-title":"Mech. Syst. Signal Process."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"84","DOI":"10.1016\/j.ymssp.2015.07.016","article-title":"A modal decomposition and expansion approach for prediction of dynamic responses on a monopile offshore wind turbine using a limited number of vibration sensors","volume":"68","author":"Iliopoulos","year":"2016","journal-title":"Mech. Syst. Signal Process."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"105280","DOI":"10.1016\/j.ijfatigue.2019.105280","article-title":"Expansion of experimental mode shape from operational modal analysis and virtual sensing for fatigue analysis using the modal expansion method","volume":"130","author":"Nabuco","year":"2020","journal-title":"Int. J. Fatigue"},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"092010","DOI":"10.1088\/1742-6596\/753\/9\/092010","article-title":"Fatigue reassessment for lifetime extension of offshore wind monopile substructures","volume":"753","author":"Ziegler","year":"2016","journal-title":"J. Phys. Conf. Ser."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"102731","DOI":"10.1016\/j.marstruc.2020.102731","article-title":"Strain estimation for offshore wind turbines with jacket substructures using dual-band modal expansion","volume":"71","author":"Henkel","year":"2020","journal-title":"March Struct."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1032","DOI":"10.1016\/j.renene.2022.11.115","article-title":"Structural instrumentation and monitoring of the Block Island Offshore Wind Farm","volume":"202","author":"Hines","year":"2023","journal-title":"Renew. Energy"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"1463","DOI":"10.1002\/we.2104","article-title":"Fatigue assessment of offshore wind turbines on monopile foundations using multi-band modal expansion","volume":"20","author":"Iliopoulos","year":"2017","journal-title":"Wind Energy"},{"key":"ref_42","unstructured":"Conte, J., Liu, M., and Inaudi, D. (2000, January 21\u201324). Earthquake response monitoring and damage identification of structures using long-gage fiber optic sensors. Proceedings of the 14th ASCE Engineering Mechanics Conference, Austin, TX, USA."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"765","DOI":"10.1155\/2012\/408919","article-title":"Prediction of full field dynamic strain from limited sets of measured data","volume":"19","author":"Avitabile","year":"2012","journal-title":"Shock. Vib."},{"key":"ref_44","unstructured":"(2017). Standard Practices for Cycle Counting in Fatigue Analysis (Standard No. ASTM-E1049-85)."},{"key":"ref_45","doi-asserted-by":"crossref","unstructured":"Pacheco, J., Pimenta, F., Pereira, S., Cunha, \u00c1., and Magalh\u00e3es, F. (2022). Fatigue assessment of wind turbine towers: Review of processing strategies with illustrative case study. Energies, 15.","DOI":"10.3390\/en15134782"},{"key":"ref_46","unstructured":"MathWorks (2023, March 10). Practical Introduction to Fatigue Analysis Using Rainflow Counting. Available online: https:\/\/www.mathworks.com\/help\/signal\/ug\/practical-introduction-to-fatigue-analysis-using-rainflow-counting.html#mw_rtc_PracticalIntroToFatigueAnalysisUsingRainflowCountingExample_M_68F0E3B8."},{"key":"ref_47","unstructured":"(2016). Fatigue Design of Offshore Steel Structures (Standard No. DNVGL-RP-C203)."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"494","DOI":"10.1016\/j.matdes.2016.10.070","article-title":"Fatigue crack growth rates for offshore wind monopile weldments in air and seawater: SLIC inter-laboratory test results","volume":"114","author":"Ali","year":"2017","journal-title":"Mater. Des."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1080\/17445302.2022.2140531","article-title":"A review of challenges and framework development for corrosion fatigue life assessment of monopile-supported horizontal-axis offshore wind turbines","volume":"19","author":"Okenyi","year":"2024","journal-title":"Ships Offshore Struct."},{"key":"ref_50","unstructured":"(2016). Corrosion Protection for Wind Turbines (Standard No. DNV-RP-0416)."},{"key":"ref_51","unstructured":"(2021). Support Structures for Wind Turbines (Standard No. DNV-ST-0126)."},{"key":"ref_52","unstructured":"Pereira, D. (2023). Wind Rose Function, MathWorks."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/24\/10\/3009\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T14:43:02Z","timestamp":1760107382000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/24\/10\/3009"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,5,9]]},"references-count":52,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2024,5]]}},"alternative-id":["s24103009"],"URL":"https:\/\/doi.org\/10.3390\/s24103009","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,5,9]]}}}