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    Author

    John Dalsgaard Sørensen
2019
116 Downloads (Pure)
Open Access
File
2015

Effect of Defects Distribution on Fatigue Life of Wind Turbine Components

Rafsanjani, H. M. & Sørensen, J. D., 2015, In : I U T A M. Procedia. 13, p. 144–150 7 p.

Research output: Contribution to journalConference article in JournalResearchpeer-review

Open Access
Turbine components
Wind turbines
Fatigue of materials
Defects
Stochastic models
2014
8 Citations (Scopus)

Stochastic Modeling of Long-Term and Extreme Value Estimation of Wind and Sea Conditions for Probabilistic Reliability Assessments of Wave Energy Devices

Ambühl, S., Kofoed, J. P. & Sørensen, J. D., 2014, In : Ocean Engineering. 89, p. 243-255 13 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Stochastic models
Power plants
Maximum likelihood
Electricity
Fatigue of materials
2012

Damage Model for Reliability Assessment of Solder Joints in Wind Turbines

Kostandyan, E. & Sørensen, J. D., 2012, 7th EAWE PhD Seminar on Wind Energy in Europe: seminar proceedings. Delft: European Academy of Wind Energy, p. 173 1 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Soldering alloys
Wind turbines
Miners
Crack propagation
Loads (forces)
2015
1 Citation (Scopus)

Fatigue Reliability of Casted Wind Turbine Components Due to Defects

Rafsanjani, H. M. & Sørensen, J. D., 2015, Proceedings of 12th International Conference on Applications of Statistics and Probability in Civil Engineering. Haukaas, T. (ed.). Civil Engineering Risk and Reliability Association, 8 p. 248

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
Turbine components
Wind turbines
Fatigue of materials
Defects
Poisson distribution
2016
5 Citations (Scopus)

Updating failure probability of a welded joint in offshore wind turbine substructures

Mai, Q. A., Sørensen, J. D. & Rigo, P., 2016, Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering: OMAE 2016. Busan, South Korea: American Society of Mechanical Engineers, 10 p. 54232

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
Offshore wind turbines
Welds
Inspection
Costs
Safety factor
2012

Maintenance Optimization for Offshore Wind Turbines using POMDP

Nielsen, J. S. & Sørensen, J. D., 2012, Reliability and Optimization of Structural Systems: Proceedings of the 16th working conference on the international federation of information processing (IFIP) working group 7.5 on reliability and optimization of structural systems. Der Kiureghian, A. & Hajian, A. (eds.). American University of Armenia Press, Yrevan, Armenia, p. 175-182 8 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Offshore wind turbines
Repair
Farms
Bearings (structural)
Inspection
2019

Reliability analysis of offshore wind turbine foundations under lateral cyclic loading

Zorzi, G., Mankar, A., Velarde, J., Sørensen, J. D., Arnold, P. & Kirsch, F., 20 Aug 2019, (Submitted) In : Wind Energy Science.

Research output: Contribution to journalJournal articleResearchpeer-review

Offshore wind turbines
Reliability analysis
Soil structure interactions
Soils
Wind turbines
2011

Annex A. Robustness Requirements in Codes

Sørensen, J. D., Zhang, B. & Neves, L. A., 2011, Guideline : Design for Robustness of Timber Structures: COST Action E55 "Modelling of the Performance of Timber Structures". Sørensen, J. D., Dietsch, P., Kirkegaard, P. H. & Köhler, J. (eds.). Aachen: Shaker Verlag, p. 85-100 16 p. (Berichte aus dem Bauwesen).

Research output: Contribution to book/anthology/report/conference proceedingBook chapterResearchpeer-review

2015
2 Citations (Scopus)

Reliability and Maintenance for Offshore Wind Turbines and Wave Energy Devices

Sørensen, J. D., 2015, Renewable Energies Offshore. Soares, G. (ed.). CRC Press, p. 39-46 8 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Offshore wind turbines
Wind turbines
Turbine components
Costs
Safety factor
2011
245 Downloads (Pure)

Analysis of Pitch Gear Deterioration using Indicators

Nielsen, J. J. & Sørensen, J. D., 2011. 1 p.

Research output: Contribution to conference without publisher/journalPosterResearchpeer-review

Open Access
File
2015
7 Citations (Scopus)

On the Regulation of Life Safety Risk

Faber, M. H., Sørensen, J. D. & Vrouwenvelder, A. C. W. M., 2015, Proceedings of 12th International Conference on Applications of Statistics and Probability in Civil Engineering. Haukaas, T. (ed.). Civil Engineering Risk and Reliability Association, 9 p. 620

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
regulation
quantification
best practice
health risk
cause
2011

Guideline : Design for Robustness of Timber Structures: COST Action E55 "Modelling of the Performance of Timber Structures"

Sørensen, J. D. (ed.), Dietsch, P. (ed.), Kirkegaard, P. H. (ed.) & Köhler, J. (ed.), 2011, Aachen: Shaker Verlag. 146 p. (Berichte aus dem Bauwesen).

Research output: Book/ReportAnthologyResearchpeer-review

2014

Forkortet udgave af Eurocode 1: Last på bærende konstruktioner

Hansen, S. O. & Sørensen, J. D., 2014, 2. ed. Charlottenlund: Dansk Standard. 156 p.

Research output: Book/ReportBookResearch

2011
3 Citations (Scopus)
27 Downloads (Pure)

Probabilistic Design of Wave Energy Devices

Sørensen, J. D., Kofoed, J. P. & Ferreira, C. B., 2011, ICASP11 : Proceedings of the 11th International Conference on Applications of Statistics and Probability in Civil Engineering: Zurich, Switzerland, 1 - 4 August 2011. Faber, M. H., Jochen, K. & Nishijima, K. (eds.). CRC Press, p. 1839-1845 7 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Reliability analysis
Costs
2013

Reliability Assessment of Offshore Wind Turbines Considering Faults of Electrical / Mechanical Components

Kostandyan, E. & Sørensen, J. D., 2013, The Proceedings of the Twenty-third (2013) International Offshore and Polar Engineering Conference. International Society of Offshore & Polar Engineers, Vol. 1. p. 402-407 6 p. (Proceedings of the International Offshore and Polar Engineering Conference).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Offshore wind turbines
Farms
Failure modes
Coastal zones
Costs
2014
12 Citations (Scopus)

Extrapolation of extreme response for different mooring line systems of floating wave energy converters

Ambühl, S., Sterndorff, M. & Sørensen, J. D., 2014, In : International Journal of Marine Energy. 7, September, p. 1-19 19 p.

Research output: Contribution to journalJournal articleResearchpeer-review

mooring system
Mooring
wave energy
Extrapolation
anchor

Reliability analysis of wind turbines exposed to dynamic loads

Sørensen, J. D., 2014, EURODYN 2014 - IX International Conference on Structural Dynamics: proceedings. Cunha, A., Caetano, E., Ribeiro, P. & Müller, G. (eds.). Porto: European Association for Structural Dynamics (EASD), p. 39-46 8 p. (The International Conference on Structural Dynamics; No. 9).

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
Reliability analysis
Dynamic loads
Wind turbines
Fatigue of materials
Turbine components
2013

Predicting the Extreme Loads on a Wind Turbine Considering Uncertainty in Airfoil Data

Abdallah, I., Natarajan, A. & Sørensen, J. D., 2013, Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures: Proceedings of the 11th international conference on structural safety and reliability. Deodatis, G., Ellingwood, B. R. & Frangopol, D. M. (eds.). CRC Press, p. 39 1 p.

Research output: Contribution to book/anthology/report/conference proceedingConference abstract in proceedingResearchpeer-review

2018

Consistent direct-drive version of the NREL 5MW turbine

Slot, R. M. M., Svenningsen, L., Sørensen, J. D. & Thøgersen, M. L., 2018.

Research output: Contribution to conference without publisher/journalPaper without publisher/journalResearch

Turbines
Structural loads
Wind power
Wind turbines
Fatigue of materials
2017
339 Downloads (Pure)

D7.21 Report on Validation of design of grouted joints Work Package 7.2: D7.21 Report on Validation of design of grouted joints Work Package 7.2

Rodriguez, A., Natarajan, A., Santos, B., Fernandez, D., Sørensen, J. D., Gintautas, T. & NJOMO WANDJI, W., Sep 2017, IRPWIND.EU D7.21. European Commission * Office for Official Publications of the European Union

Research output: Contribution to book/anthology/report/conference proceedingReport chapterResearch

Open Access
File
Offshore wind turbines
Wind turbines
Towers
Reinforced concrete
Fatigue of materials
2014

Wind turbine blade life-time assessment model for preventive planning of operation and maintenance

Florian, M. & Sørensen, J. D., 2014, International Conference on Safety & Reliability of Ships, Offshore & Subsea Structures: 18th-20th August 2014. ASRANet Ltd., 6 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Wind turbines
Turbomachine blades
Planning
Crack propagation
Offshore wind farms
2013

Robustness Analyses of Timber Structures

Kirkegaard, P. H., Sørensen, J. D. & Hald, F., 2013, In : Computational Technology Reviews. 8, p. 125-148 24 p.

Research output: Contribution to journalReview articleResearchpeer-review

Timber
Redundancy
Engineers
2011

Recommendations

Dietsch, P., Munch-Andersen, J. & Sørensen, J. D., 2011, Guideline : Design for Robustness of Timber Structures: COST Action E55 "Modelling of the Performance of Timber Structures". Sørensen, J. D., Dietsch, P., Kirkegaard, P. H. & Köhler, J. (eds.). Aachen: Shaker Verlag, p. 66-77 12 p. (Berichte aus dem Bauwesen).

Research output: Contribution to book/anthology/report/conference proceedingBook chapterResearchpeer-review

Methods of Assessing Robustness of Structures

Dean, C., Turk, G. & Sørensen, J. D., 2011, Robustness of Structures : Final Report of COST Action TU0601: Theoretical framework on structural robustness. Faber, M. (ed.). Prague: Czech Technical University, Prague, Czech Republic, Klokner Institute, p. B.23-B.27 5 p.

Research output: Contribution to book/anthology/report/conference proceedingReport chapterResearchpeer-review

2013

Probabilistic Approach to Fatigue Assessment for Stay Cables

Baussaron, J., Sørensen, J. D., Toft, H. S. & Yalamas, T., 2013, IABSE Conference Rotterdam 2013: Assessment, upgrading and refurbishment of infrastructures. IABSE. S. (ed.). International Association for Bridge and Structural Engineering, 8 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Cables
Fatigue of materials
Cracks
Cable stayed bridges
Deterioration
2019
69 Downloads (Pure)

Reduction of Operation and Maintenance Cost for Wind Turbine Blades – Reliability Model

Yi, Y. & Sørensen, J. D., 2019, Aalborg: Department of Civil Engineering, Aalborg University. 26 p. (DCE Technical Reports; No. 260).

Research output: Book/ReportReportResearch

Open Access
File
Wind turbines
Turbomachine blades
Costs
Fracture mechanics
Cracks
2011

Implementation of Structural Robustness

Sørensen, J. D., 2011, Robustness of Structures : Final Report of COST Action TU0601: Theoretical framework on structural robustness. Faber, M. (ed.). Prague: Czech Technical University, Prague, Czech Republic, Klokner Institute, p. B.15-B.18 4 p.

Research output: Contribution to book/anthology/report/conference proceedingReport chapterResearchpeer-review

2019

Reliability-based inspection planning of wind turbine concrete structures subjected to fatigue

Mankar, A., Bassil, A., Wang, X., Velarde, J., Bayane, I., Long, L. & Sørensen, J. D., 29 Jul 2019, (Submitted) In : Engineering Structures.

Research output: Contribution to journalJournal articleResearchpeer-review

Concrete construction
Wind turbines
Fatigue damage
Inspection
Fatigue of materials
2017

O&M, Integration of tools and systems; Work Package 4 - Deliverable number 4.7

Nielsen, J. S., Sørensen, J. D., Ambühl, S., Sperstad, I. B., Welte, T., Kolstad, M., Nonås, L. M., Anaxagorou, P., De Neve, J., Goormachtigh, J., Ouelhadj, D., Irawan, C., Galvan, B. & Netland, Ø., 2017, European Commission * Office for Official Publications of the European Union. 122 p.

Research output: Book/ReportReportResearchpeer-review

2013
2 Citations (Scopus)

Reliability Assessment of Welded Steel Details in Bridges using Inspection

Toft, H. S., Sørensen, J. D., Yalamas, T. & Baussaron, J., 2013, Safety, Reliability, Risk and Life-Cycle Performance of Structures and Infrastructures: Proceedings of the 11th international conference on structural safety and reliability. Deodatis, G., Ellingwood, B. R. & Frangopol, D. M. (eds.). CRC Press, p. 975 1 p.

Research output: Contribution to book/anthology/report/conference proceedingConference abstract in proceedingResearchpeer-review

2015

Probability based calibration of pressure coefficients

Hansen, S. O., Pedersen, M. L. & Sørensen, J. D., 2015, The ICWE14 Conference Proceedings: 14th international conference on wind engineering. Porto Alegre: 14th international conference on wind engineering, 16 p. 02817

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Calibration
Snow
Wind tunnels
Pressure measurement
Pressure distribution
2016

Long-term research challenges in wind energy: A research agenda by the European Academy of Wind Energy

A. M. van Kuik, G., Peinke, J., Nijssen, R., Lekou, D., Mann, J., Sørensen, J. N., Ferreira, C., W. van Wingerden, J., Schlipf, D., Gebraad, P., Polinder, H., Abrahamsen, A., J. W. van Bussel, G., Sørensen, J. D., Tavner, P., L. Bottasso, C., Muskulus, M., Matha, D., J. Lindeboom, H., Degraer, S. & 7 others, Kramer, O., Lehnhoff, S., Sonnenschein, M., E. Sørensen, P., W. Künneke, R., E. Morthorst, P. & Skytte, K., 2016, In : Wind Energy Science. 1, 1, p. 1-39

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
wind energy
academy
basic research
physics
expert
2019

Reliability requirements for life extension of wind turbines

Nielsen, J. S. & Sørensen, J. D., 2019.

Research output: Contribution to conference without publisher/journalConference abstract for conferenceResearchpeer-review

2014

Statistical analysis of manufacturing defects on fatigue life of wind turbine casted Component

Rafsanjani, H. M., Sørensen, J. D., Mukherjee, K., Fæster, S. & Sturlason, A., 2014, International Conference on Safety & Reliability of Ships, Offshore & Subsea Structures: 18th-20th August 2014. ASRANet Ltd., 6 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Turbine components
Wind turbines
Statistical methods
Stochastic models
Fatigue of materials
2016

Reliability and risk-based planning of operation and maintenance of offshore wind turbines

Sørensen, J. D., Florian, M. & Berzonskis, A., 2016, Procedings of 2nd International Conference on Structural Reliability of Ships, Offshore and Subsea Structures (SAROSS 2016). ASRANet Ltd., 11 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Offshore wind turbines
Planning
Wind turbines
Turbine components
Condition monitoring
11 Citations (Scopus)

Wind Climate Parameters for Wind Turbine Fatigue Load Assessment

Toft, H. S., Svenningsen, L., Moser, W., Sørensen, J. D. & Thøgersen, M. L., 2016, In : Journal of Solar Energy Engineering. 138, June, 8 p., 031010.

Research output: Contribution to journalJournal articleResearchpeer-review

Wind turbines
Fatigue of materials
Bending moments
Turbulence
Turbine components
2015
2 Citations (Scopus)

Reliability-based Calibration of Partial Safety Factors for Wave Energy Converters

Ambühl, S., Kramer, M. M. & Sørensen, J. D., 2015, Proceedings of 12th International Conference on Applications of Statistics and Probability in Civil Engineering. Haukaas, T. (ed.). Civil Engineering Risk and Reliability Association, 8 p. 231

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Open Access
Safety factor
Inspection
Calibration
Fracture mechanics
Standardization
198 Downloads (Pure)

Integrated system reliability analysis: Deliverable D1.34 of INNWIND.EU project

Gintautas, T. & Sørensen, J. D., 16 Oct 2015, Aalborg Universitet. 102 p.

Research output: Book/ReportReportResearch

Open Access
File
Reliability analysis
Wind turbines
Innovation
1 Citation (Scopus)

Special issue of "structural Concrete" with articles from the JCSS workshop on "risk- and reliability-based assessment of existing structures"

Caspeele, R., Steenbergen, R. & Sørensen, J. D., 1 Sep 2015, In : Structural Concrete. 16, 3, p. 313 1 p.

Research output: Contribution to journalEditorialResearchpeer-review

Open Access
2013

Probabilistic Three-Dimensional Model of an offshore Monopile Foundation: reliability based approach

Vahdatirad, M. J., Andersen, L. V., Ibsen, L. B., Clausen, J. & Sørensen, J. D., 2013, Seventh International Conference on Case Stories in Geotechnical Engineering : and Symposium in Honor of Clyde Baker. Prakash, S. (ed.). Missouri University of Science and Technology, 8 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Soils
Shear strength
Stochastic models
Constitutive models
Wind turbines
2017
662 Downloads (Pure)

Different Transportation and Maintenance Strategies for Offshore Wind Farms

Ambühl, S. & Sørensen, J. D., 18 Apr 2017, Aalborg: Department of Civil Engineering, Aalborg University. 46 p. (DCE Technical reports; No. 227).

Research output: Book/ReportReportResearch

Open Access
File
Offshore wind farms
Offshore wind turbines
Boats
Inspection
Costs
2018

Addressing the need to monitor concrete fatigue with Non Destructive Testing: results of Infrastar European project

Abraham, O., Niederleithinger, E., Chapeleau, X., Klikowicz, P., Brühwiler, E., Bassil, A., Wang, X., Chakraborty, J., Bayane, I., Leduc, D., Salamak, M., Katunin, A. & Sørensen, J. D., 2018, Proceedings of SMT and NDT-CE 2018: An ASNT Topical Conference. The American Society for Nondestructive Testing, 12 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

2014
10 Citations (Scopus)

Reliability-Based Structural Optimization of Wave Energy Converters

Ambühl, S., Kramer, M. & Sørensen, J. D., 2014, In : Energies. 7, 12, p. 8178-8200 23 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
Structural optimization
Structural Optimization
Converter
Costs
Energy
2011
133 Citations (Scopus)

On Risk-Based Operation and Maintenance of Offshore Wind Turbine Components

Nielsen, J. J. & Sørensen, J. D., 2011, In : Reliability Engineering & System Safety. 96, 1, p. 218-229 12 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Offshore wind turbines
Turbine components
Inspection
Costs
Repair
2018
8 Citations (Scopus)
306 Downloads (Pure)

Bayesian based Diagnostic Model for Condition based Maintenance of Offshore Wind Farms

Asgarpour, M. & Sørensen, J. D., 2018, In : Energies. 11, 2, 300.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
Condition-based Maintenance
Model Diagnostics
Offshore wind farms
Fault Detection
Fault detection
2011
6 Citations (Scopus)
51 Downloads (Pure)

Risk-Based Operation and Maintenance of Offshore Wind Turbines using Bayesian Networks

Nielsen, J. J. & Sørensen, J. D., 2011, ICASP11 : Proceedings of the 11th International Conference on Applications of Statistics and Probability in Civil Engineering: Zurich, Switzerland, 1 - 4 August 2011. Faber, M. H., Jochen, K. & Nishijima, K. (eds.). CRC Press, p. 311-317 7 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Offshore wind turbines
Bayesian networks
Inspection
Offshore wind farms
Planning
2018
87 Downloads (Pure)

Directional fatigue accumulation in wind turbine steel towers

Slot, R. M. M., Schwarte, J., Svenningsen, L., Sørensen, J. D. & Thøgersen, M. L., 2018, In : Journal of Physics: Conference Series (Online). 1102, 1, 10 p., 012017.

Research output: Contribution to journalConference article in JournalResearchpeer-review

Open Access
File
wind turbines
towers
steels
turbulence
simplification
2011
14 Citations (Scopus)

Assessment of Load Extrapolation Methods for Wind Turbines

Toft, H. S., Sørensen, J. D. & Veldkamp, D., 2011, In : Journal of Solar Energy Engineering. 133, 2, p. 1-8 8 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Extrapolation
Wind turbines
Agglomeration
Bending moments
1 Citation (Scopus)
20 Downloads (Pure)

Non-Parametric Bayesian Updating within the Assessment of Reliability for Offshore Wind Turbine Support Structures

Ramirez, J. R. & Sørensen, J. D., 2011, ICASP11 : Proceedings of the 11th International Conference on Applications of Statistics and Probability in Civil Engineering: Zurich, Switzerland, 1 - 4 August 2011. Faber, M. H., Jochen, K. & Nishijima, K. (eds.). CRC Press, p. 1256-1264 9 p.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Offshore wind turbines
Condition monitoring
Reliability analysis
Chaos theory
Polynomials