Feasibility of modal expansion for virtual sensing in offshore wind jacket substructures

Autor: Martin Dalgaard Ulriksen, John Dalsgaard Sørensen, Ronnie Pedersen, Ulf T. Tygesen, Dawid Jakub Augustyn

Publikováno v: Augustyn, D J, Pedersen, R, Tygesen, U T, Ulriksen, M D & Sørensen, J D 2021, ' Feasibility of modal expansion for virtual sensing in offshore wind jacket substructures ', Marine Structures, vol. 79, no. September 2021, 103019 . https://doi.org/10.1016/j.marstruc.2021.103019

The present paper investigates the feasibility of modal expansion-based virtual sensing in the context of offshore wind jacket substructures. For this specific application, issues have been reported when expanding wind-driven brace vibrations and wav

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c97c58625c8a385300ccaba11542009d
https://vbn.aau.dk/da/publications/d6262ee3-445c-4351-b6fe-b120505c75a7

Data-driven Model Updating of an Offshore Wind Jacket Substructure

Autor: Ursula Smolka, Martin Dalgaard Ulriksen, John Dalsgaard Sørensen, Dawid Jakub Augustyn, Ulf T. Tygesen

Publikováno v: Augustyn, D J, Smolka, U, Tygesen, U T, Ulriksen, M D & Sørensen, J D 2020, ' Data-driven Model Updating of an Offshore Wind Jacket Substructure ', Applied Ocean Research, vol. 104, 102366 . https://doi.org/10.1016/j.apor.2020.102366

The present paper provides a model updating application study concerning the jacket substructure of an offshore wind turbine. The updating is resolved in a sensitivity-based parameter estimation setting, where a cost function expressing the discrepan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5cc8a3635c7367e2882ce567a7068db
https://vbn.aau.dk/da/publications/b48f0d52-ee39-4914-8355-03cee8d68af1

Experimental study of strain prediction on wave induced structures using modal decomposition and quasi static Ritz vectors

Autor: Julie Carøe Kristoffersen, Ulf T. Tygesen, Rune Brincker, Jonas Vestermark, Anders Skafte

Publikováno v: Skafte, A, Kristoffersen, J C, Vestermark, J, Tyge Tygesen, U & Brincker, R 2017, ' Experimental study of strain prediction on wave induced structures using modal decomposition and quasi static Ritz vectors ', Engineering Structures, vol. 136, pp. 261-276 . https://doi.org/10.1016/j.engstruct.2017.01.014

Offshore structures are continuously subjected to dynamic loading from wind and waves which makes fatigue an important parameter for the structures expected lifetime. Monitoring the vibrations of the structure using real time operating data enables a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1bdb8fe8c1f88a0cddd7a768dc15e8d4
https://doi.org/10.1016/j.engstruct.2017.01.014

Cost-Effective Load Monitoring Methods for Fatigue Life Estimation of Offshore Platform

Autor: Ulf T. Tygesen, Nevena Perisic

Publikováno v: Volume 4B: Structures, Safety and Reliability.

The lifetime of offshore structures are ruled by accumulated fatigue damage so structural load monitoring is of special importance for re-assessment of offshore platforms. However, direct measuring of the actual loading is usually not feasible due to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::57c019414ac557f9aa85f4a638efdbb5
https://doi.org/10.1115/omae2014-23865

Load Identification of Offshore Platform for Fatigue Life Estimation

Autor: Ulf T. Tygesen, Poul Henning Kirkegaard, Nevena Perisic

Publikováno v: Structural Health Monitoring, Volume 5 ISBN: 9783319045696

The lifetime of an offshore platform is typically governed by accumulated fatigue damage. Thus, the load time history is an essential parameter for prediction of the lifetime of the structure and its components. Consequently, monitoring of structural

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::42bc48070cf64df2fa48e34f0725a550
https://doi.org/10.1007/978-3-319-04570-2_11