2023

• Mehlan, Felix Christian; Keller, Jonathan; Nejad, Amir R.. (2023) Virtual sensing of wind turbine hub loads and drivetrain fatigue damage. Forschung im Ingenieurwesen.
  Vitenskapelig artikkel
• Purcell, Etienne; Nejad, Amir R.; Bekker, Anriëtte. (2023) Detection of ice using ship propulsion and navigation measurements. Ocean Engineering. volum 273.
  Vitenskapelig artikkel
• Rezaei, Ashkan; Guo, Yi; Keller, Jonathan; Nejad, Amir R.. (2023) Effects of wind field characteristics on pitch bearing reliability: a case study of 5 MW reference wind turbine at onshore and offshore sites. Forschung im Ingenieurwesen.
  Vitenskapelig artikkel
• Siddiqui, Muhammad Omer; Nejad, Amir R.; Wenske, Jan. (2023) On a new methodology for testing full load responses of wind turbine drivetrains on a test bench. Forschung im Ingenieurwesen.
  Vitenskapelig artikkel
• van Binsbergen, Diederik; Valavi, Mostafa; Nejad, Amir R.; Helsen, Jan. (2023) Effect of generator torque ripple optimization on a geared wind turbine drivetrain. Forschung im Ingenieurwesen.
  Vitenskapelig artikkel

2022

• Dibaj, Ali; Gao, Zhen; Nejad, Amir R.. (2022) Fault detection of offshore wind turbine drivetrains in different environmental conditions through optimal selection of vibration measurements. Renewable Energy. volum 203.
  Vitenskapelig artikkel
• Dibaj, Ali; Nejad, Amir R.; Gao, Zhen. (2022) A data-driven approach for fault diagnosis of drivetrain system in a spar-type floating wind turbine based on the multi-point acceleration measurements. Journal of Physics: Conference Series (JPCS). volum 2265.
  Vitenskapelig artikkel
• Mehlan, Felix Christian; Nejad, Amir R.; Gao, Zhen. (2022) Digital twin based virtual sensor for online fatigue damage monitoring in offshore wind turbine drivetrains. Journal of Offshore Mechanics and Arctic Engineering. volum 144 (6).
  Vitenskapelig artikkel
• Mehlan, Felix Christian; Pedersen, Eilif; Nejad, Amir R.. (2022) Modelling of wind turbine gear stages for Digital Twin and real-time virtual sensing using bond graphs. Journal of Physics: Conference Series (JPCS). volum 2265 (032065).
  Vitenskapelig artikkel
• Nejad, Amir R.. (2022) Preface. Journal of Physics: Conference Series (JPCS). volum 2257 (1).
  Leder
• Nejad, Amir R.; Keller, Jonathan; Guo, Yi; Sheng, Shawn; Polinder, Henk; Watson, Simon; Dong, Jianning; Qin, Zian; Ebrahimi, Amir; Schelenz, Ralf; Guzmán, Francisco Gutiérrez; Cornel, Daniel; Golafshan, Reza; Jacob, Georg; Blockmans, Bart; Bosmans, Jelle; Pluymers, Bert; Carroll, James; Koukoura, Sofia. (2022) Wind turbine drivetrains: state-of-the-art technologies and future development trends. Wind Energy Science. volum 7.
  Vitenskapelig artikkel
• Tartt, Kelly Jane; Amiri, Abbas K.; Nejad, Amir R.; McDonald, A.; Carroll, J.. (2022) Development of a Vulnerability Map of Wind Turbine Power Converters. Journal of Physics: Conference Series (JPCS). volum 2265.
  Vitenskapelig artikkel
• van Binsbergen, Diederik; soares, marcelo nesci; Pedersen, Eilif; Nejad, Amir R.. (2022) A physics-, SCADA-based remaining useful life calculation approach for wind turbine drivetrains. Journal of Physics: Conference Series (JPCS). volum 2265.
  Vitenskapelig artikkel

2021

• Berge, Vegard; Helgesen, Christoffer Rene; Ivanov, Dimitar Zdravkov; Jahren, Marianne Helno; Opstad, Pauline Sundvor; Sletten, Petter Solem; Nejad, Amir R.. (2021) On State-of-the-Art and Alternative Energy-Efficient Lifting Technologies for Deep Sea Mining. ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering Volume 5: Ocean Space Utilization.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Ibrion, Mihaela; Nejad, Amir R.. (2021) On Building a Safe Ocean, The oceanscape and the necessity for developing an Ocean Culture. UN Decade of Ocean Science for Sustainable Development, SPECIAL ISSUE IN PARTNERSHIP WITH IOC-UNESCO.
  publications.POPVIT_KAPITTEL
• Ibrion, Mihaela; Paltrinieri, Nicola; Nejad, Amir R.. (2021) Learning from failures in cruise ship industry: The blackout of Viking Sky in Hustadvika, Norway. Engineering Failure Analysis. volum 125.
  Vitenskapelig artikkel
• Khazaeli Moghadam, Farid; Nejad, Amir R.. (2021) Online condition monitoring of floating wind turbines drivetrain by means of digital twin. Mechanical systems and signal processing. volum 162.
  Vitenskapelig artikkel
• Khazaeli Moghadam, Farid; Nejad, Amir R.. (2021) Theoretical and experimental study of wind turbine drivetrain fault diagnosis by using torsional vibrations and modal estimation. Journal of Sound and Vibration. volum 509.
  Vitenskapelig artikkel
• Khazaeli Moghadam, Farid; Nejad, Amir R.. (2021) Vibration-Based Condition Monitoring of Drivetrains in Large Offshore Wind Turbines in a Digital Twin Perspective. 2021. ISBN 978-82-326-6674-4.
  Doktorgradsavhandling
• Khazaeli Moghadam, Farid; Rebouças, G. F. S.; Nejad, Amir R.. (2021) Digital twin modeling for predictive maintenance of gearboxes in floating offshore wind turbine drivetrains. Forschung im Ingenieurwesen. volum 85.
  Vitenskapelig artikkel
• Mehlan, Felix Christian; Nejad, Amir R.; Gao, Zhen. (2021) Estimation of Wind Turbine Gearbox Loads for Online Fatigue Monitoring Using Inverse Methods. ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Nejad, Amir R.; Breivik, Andreas; Valavi, Mostafa. (2021) Fault Detection and Diagnosis of Induction Motor for Ship Propulsion by utilizing Electrical Signature and Finite Element Method. Norges teknisk-naturvitenskapelige universitet. 2021.
  Mastergradsoppgave
• Nejad, Amir R.; Purcell, Etienne; Mostafa, Valavi; Roman, Hudak; Benjamin, Lehmann; Francisco Gutiérrez, Guzmán; Felix, Behrendt; Angelo Mario, Bõhm; Franz, von Bock und Polach; Brendon M., Nickerson; Anriëtte, Bekker; Withold, Drazyk. (2021) Condition Monitoring of Ship Propulsion Systems: State-of-the-Art, Development Trend and Role of Digital Twin. ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering Volume 7: Polar and Arctic Sciences and Technology.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Purcell, Etienne; Nejad, Amir R.; Valavi, Mostafa; Bekker, Anriëtte. (2021) On Uncertainty Assessment of Fatigue Damage of Propulsion Shaft Under Ice Impact. ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering Volume 7: Polar and Arctic Sciences and Technology.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• R. Nejad, Amir; Torsvik, Jone. (2021) Drivetrains on floating offshore wind turbines: lessons learned over the last 10 years. Forschung im Ingenieurwesen. volum 85.
  Vitenskapelig artikkel
• Tartt, Kelly Jane; Nejad, Amir R.; Amiri, Abbas K.; McDonald, A.. (2021) On Lifetime Extension of Wind Turbine Drivetrains. ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Torsvik, Jone; Nejad, Amir R.; Pedersen, Eilif. (2021) Experimental field study of floater motion effects on a main bearing in a full-scale spar floating wind turbine. Marine Structures. volum 79.
  Vitenskapelig artikkel
• van Binsbergen, Diederik; Nejad, Amir R.; Helsen, Jan. (2021) Dynamic Model Development of Wind Turbine Drivetrains by Using Sensor Measurements. ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Wang, Shuaishuai; Moan, Torgeir; Nejad, Amir R.. (2021) A comparative study of fully coupled and de-coupled methods on dynamic behaviour of floating wind turbine drivetrains. Renewable Energy. volum 179.
  Vitenskapelig artikkel
• Wang, Shuaishuai; Nejad, Amir R.; Moan, Torgeir. (2021) Design and Dynamic Analysis of a Compact 10 MW Medium Speed Gearbox for Offshore Wind Turbines. Journal of Offshore Mechanics and Arctic Engineering. volum 143 (3).
  Vitenskapelig artikkel
• Wang, Shuaishuai; Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Moan, Torgeir. (2021) A comparative study on the dynamic behaviour of 10 MW conventional and compact gearboxes for offshore wind turbines. Wind Energy. volum 24 (7).
  Vitenskapelig artikkel

2020

• Cho, Seongpil; Bachynski, Erin Elizabeth; Rasekhi Nejad, Amir; Gao, Zhen; Moan, Torgeir. (2020) Numerical modeling of the hydraulic blade pitch actuator in a spar‐type floating wind turbine considering fault conditions and their effects on global dynamic responses. Wind Energy. volum 23 (2).
  Vitenskapelig artikkel
• Dong, Wenbin; Rasekhi Nejad, Amir; Moan, Torgeir; Gao, Zhen. (2020) Structural reliability analysis of contact fatigue design of gears in wind turbine drivetrains. Journal of Loss Prevention in the Process Industries. volum 65.
  Vitenskapelig artikkel
• Ibrion, Mihaela; Paltrinieri, Nicola; Rasekhi Nejad, Amir. (2020) Learning from failures: Accidents of marine structures on Norwegian continental shelf over 40 years time period. Engineering Failure Analysis. volum 111.
  Vitenskapelig artikkel
• Ibrion, Mihaela; Paltrinieri, Nicola; Rasekhi Nejad, Amir. (2020) Learning from non-failure of Onagawa nuclear power station: an accident investigation over its life cycle. Results in Engineering (RINENG). volum 8.
  Vitenskapelig artikkel
• Khazaeli Moghadam, Farid; Rasekhi Nejad, Amir. (2020) Evaluation of PMSG-based drivetrain technologies for 10 MW floating offshore wind turbines: pros and cons in a life-cycle perspective. Wind Energy. volum 23 (7).
  Vitenskapelig artikkel
• Khazaeli Moghadam, Farid; Rasekhi Nejad, Amir. (2020) Natural frequency estimation by using torsional response, and applications for wind turbine drivetrain fault diagnosis. Journal of Physics: Conference Series (JPCS). volum 1618.
  Vitenskapelig artikkel
• Lee, Chern Fong; Bachynski, Erin Elizabeth; Rasekhi Nejad, Amir. (2020) Consequences of load mitigation control strategies for a floating wind turbine. Journal of Physics: Conference Series (JPCS). volum 1669.
  Vitenskapelig artikkel
• Moan, Torgeir; Gao, Zhen; Bachynski, Erin Elizabeth; Rasekhi Nejad, Amir. (2020) Recent Advances in Integrated Response Analsysis of Floating Wind Turbines in a Reliability Perspective. Journal of Offshore Mechanics and Arctic Engineering. volum 142 (5).
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir. (2020) Life Prediction and Health Monitoring of Marine Propulsion System under Ice Impact (HealthProp).
  Nettsider (opplysningsmateriale)
• Rebouças, G. F. S.; Rasekhi Nejad, Amir. (2020) On Down-Scaled Modelling of Wind Turbine Drivetrains. Journal of Physics: Conference Series (JPCS). volum 1618 (5).
  Vitenskapelig artikkel
• van Binsbergen, Dirk Willem; Wang, Shuaishuai; Rasekhi Nejad, Amir. (2020) Effects of induction and wake steering control on power and drivetrain responses for 10 MW floating wind turbines in a wind farm. Journal of Physics: Conference Series (JPCS). volum 1618.
  Vitenskapelig artikkel
• Wang, Shuaishuai; Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Moan, Torgeir. (2020) Effects of bedplate flexibility on drivetrain dynamics: Case study of a 10 MW spar type floating wind turbine. Renewable Energy. volum 161.
  Vitenskapelig artikkel
• Wang, Shuaishuai; Rasekhi Nejad, Amir; Moan, Torgeir. (2020) Dynamic Behaviour Comparison of a 10-MW Drivetrain in a Bottom-Fixed Monopile and a Spar Floating Wind Turbines. Proceedings of the Thirtieth (2020) International Ocean and Polar Engineering Conference Shanghai, China, October 11-16, 2020.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Wang, Shuaishuai; Rasekhi Nejad, Amir; Moan, Torgeir. (2020) On design, modelling, and analysis of a 10‐MW medium‐speed drivetrain for offshore wind turbines. Wind Energy. volum 23 (4).
  Vitenskapelig artikkel

2019

• Balestra, Lorenzo; Rasekhi Nejad, Amir; Naldi, Giovanni. (2019) On Design and Analysis of a Drivetrain Test Rig for Wind Turbine Health Monitoring. ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. Volume 10: Ocean Renewable Energy.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Ibrion, Mihaela; Paltrinieri, Nicola; Rasekhi Nejad, Amir. (2019) On Disaster Risk Reduction in Norwegian Oil and Gas Industry Through Life-Cycle Perspective. ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. Volume 3: Structures, Safety, and Reliability.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Ibrion, Mihaela; Paltrinieri, Nicola; Rasekhi Nejad, Amir. (2019) On risk of digital twin implementation in marine industry: Learning from aviation industry. Journal of Physics: Conference Series (JPCS). volum 1357 (1).
  Vitenskapelig artikkel
• Johansen, Sigrid S.; Rasekhi Nejad, Amir. (2019) On Digital Twin Condition Monitoring Approach for Drivetrains in Marine Applications. ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. Volume 10: Ocean Renewable Energy.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Khazaeli Moghadam, Farid; Rasekhi Nejad, Amir. (2019) Experimental Validation of Angular Velocity Measurements for Wind Turbines Drivetrain Condition Monitoring. ASME 2019 2nd International Offshore Wind Technical Conference.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Rasekhi Nejad, Amir; Aoyanagi, Yuriko; Ibrion, Mihaela. (2019) Team and Research Based Learning Methods Applied in Multidisciplinary Marine Engineering Education. Journal of Physics: Conference Series (JPCS). volum 1357 (1).
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Moan, Torgeir. (2019) Effect of axial acceleration on drivetrain responses in a spar-type floating wind turbine. Journal of Offshore Mechanics and Arctic Engineering. volum 141 (3).
  Vitenskapelig artikkel
• Wang, Shuaishuai; Rasekhi Nejad, Amir; Moan, Torgeir. (2019) Design and Dynamic Analysis of a Compact 10 MW Medium Speed Gearbox for Offshore Wind Turbines. ASME 2019 2nd International Offshore Wind Technical Conference.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Wang, Shuaishuai; Rasekhi Nejad, Amir; Moan, Torgeir. (2019) On initial design and modelling of a 10 MW medium speed drivetrain for offshore wind turbines. Journal of Physics: Conference Series (JPCS). volum 1356:012024.
  Vitenskapelig artikkel

2018

• Ghane, Mahdi; Nejad, Amir Rasekhi; Blanke, Mogens; Gao, Zhen; Moan, Torgeir. (2018) Condition monitoring of spar‐type floating wind turbine drivetrain using statistical fault diagnosis. Wind Energy. volum 21 (7).
  Vitenskapelig artikkel
• Moan, Torgeir; Nejad, Amir Rasekhi. (2018) Proceedings of the 3rd Offshore Structural Reliability Conference (OSRC2016). 2018. ISBN 978-82-691120-0-9.
  Vitenskapelig antologi/Konferanseserie
• Nejad, Amir Rasekhi. (2018) Modelling and Analysis of Drivetrains in Offshore Wind Turbines. Offshore Wind energy technology.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Nejad, Amir Rasekhi; Odgaard, Peter Fogh; Moan, Torgeir. (2018) Conceptual study of a gearbox fault detection method applied on a 5‐MW spar‐type floating wind turbine. Wind Energy. volum 21 (11).
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Li, Lin; Guachamin Acero, Wilson Ivan; Moan, Torgeir. (2018) A Systematic Design Approach of Gripper’s Hydraulic System Utilized in Offshore Wind Turbine Monopile Installation. ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering - Volume 11A: Honoring Symposium for Professor Carlos Guedes Soares on Marine Technology and Ocean Engineering.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Torsvik, Jone; Nejad, Amir Rasekhi; Pedersen, Eilif. (2018) Main bearings in large offshore wind turbines: development trends, design and analysis requirements. Journal of Physics: Conference Series (JPCS). volum 1037 (4).
  Vitenskapelig artikkel

2017

• Ghane, Mahdi; Nejad, Amir Rasekhi; Blanke, Mogens; Gao, Zhen; Moan, Torgeir. (2017) Diagnostic monitoring of drivetrain in a 5 MW spar-type floating wind turbine using Hilbert spectral analysis. Energy Procedia. volum 137.
  Vitenskapelig artikkel
• Nejad, Amir Rasekhi; Bachynski, Erin Elizabeth; Moan, Torgeir. (2017) On Tower Top Axial Acceleration and Drivetrain Responses in a Spar-Type Floating Wind Turbine. ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering - Volume 9: Offshore Geotechnics; Torgeir Moan Honoring Symposium.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Rasekhi Nejad, Amir; Moan, Torgeir. (2017) On model-based system approach for health monitoring of drivetrains in floating wind turbines. Procedia Engineering. volum 199.
  Vitenskapelig artikkel

2016

• Ghane, Mahdi; Rasekhi Nejad, Amir; Blanke, Mogens; Gao, Zhen; Moan, Torgeir. (2016) Statistical fault diagnosis of wind turbine drivetrain applied to a 5MW floating wind turbine. Journal of Physics: Conference Series (JPCS). volum 753.
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Li, Lin; Moan, Torgeir. (2016) Correlation between Acceleration and Drivetrain Load Effects for Monopile Offshore Wind Turbines. Energy Procedia. volum 94.
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Guo, Yi; Gao, Zhen; Moan, Torgeir. (2016) Development of a 5 MW reference gearbox for offshore wind turbines. Wind Energy. volum 19 (6).
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Jiang, Zhiyu; Gao, Zhen; Moan, Torgeir. (2016) Drivetrain load effects in a 5-MW bottom-fixed wind turbine under blade-pitch fault condition and emergency shutdown. Journal of Physics: Conference Series (JPCS). volum 753 (11).
  Vitenskapelig artikkel

2015

• Guo, Yi; Keller, Jonathan; LaCava, William; Austin, Jason; Rasekhi Nejad, Amir; Halse, Chris; Bastard, Loic; Helsen, Jan. (2015) Recommendations on Model Fidelity for Wind Turbine Gearbox Simulations. 2015.
  Rapport
• Rasekhi Nejad, Amir. (2015) Dynamic analysis and design of gearboxes in offshore wind turbines in a structural reliability perspective. Norges teknisk-naturvitenskapelige universitet. 2015. ISBN 978-82-326-1038-9. Doktoravhandlinger ved NTNU (191).
  Doktorgradsavhandling
• Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Gao, Zhen; Moan, Torgeir. (2015) Fatigue Damage Comparison of Mechanical Components in a Land-based and a Spar Floating Wind Turbine. Procedia Engineering. volum 101 (C).
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Bachynski, Erin Elizabeth; Kvittem, Marit Irene; Luan, Chenyu; Gao, Zhen; Moan, Torgeir. (2015) Stochastic dynamic load effect and fatigue damage analysis of drivetrains in land-based and TLP, spar and semi-submersible floating wind turbines. Marine Structures. volum 42.
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Xing, Yihan; Guo, Yi; Keller, Jonathan; Gao, Zhen; Moan, Torgeir. (2015) Effects of floating sun gear in a wind turbine’s planetary gearbox with geometrical imperfections. Wind Energy. volum 18 (12).
  Vitenskapelig artikkel

2014

• Odgaard, Peter Fogh; Rasekhi Nejad, Amir. (2014) Frequency based Wind Turbine Gearbox Fault Detection applied to a 750 kW Wind Turbine. Proceedings of the IEEE Conference on Control Applications.
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Gao, Zhen; Moan, Torgeir. (2014) Fatigue Reliability-Based Inspection and Maintenance Planning of Gearbox Components in Wind Turbine Drivetrains. Energy Procedia. volum 53.
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Gao, Zhen; Moan, Torgeir. (2014) On long-term fatigue damage and reliability analysis of gears under wind loads in offshore wind turbine drivetrains. International Journal of Fatigue. volum 61.
  Vitenskapelig artikkel
• Rasekhi Nejad, Amir; Odgaard, Peter Fogh; Gao, Zhen; Moan, Torgeir. (2014) A prognostic method for fault detection in wind turbine drivetrains. Engineering Failure Analysis. volum 42.
  Vitenskapelig artikkel

2013

• Rasekhi Nejad, Amir; Gao, Zhen; Moan, Torgeir. (2013) Long-term Analysis of Gear Loads in Fixed Offshore Wind Turbines Considering Ultimate Operational Loadings. Energy Procedia. volum 35.
  Vitenskapelig artikkel

2012

• Nejad, Amir R; Xing, Yihan; Moan, Torgeir. (2012) Gear Train Internal Dynamics in Large Offshore Wind Turbines. 2012 Proceedings of the ASME 11th Biennial Conference on Engineering Systems Design and Analysis (ESDA2012)-Volume 3.
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel