Structural Integrity Assessment of Offshore Wind Turbine Foundations
5th February 2020 - 09:30-12:30 GMT
Given the harsh environment of offshore wind turbines, a major design and O&M challenge is the corrosion and fatigue of the structure. This webinar is designed to give attendees a more rounded appreciation of the unique considerations that should be given to the structural integrity assessment of offshore wind turbine foundations.
Several areas will be covered including:
Fatigue crack initiation and growth in offshore structures
A brief introduction to S-N curves, Linear Elastic Fracture Mechanics, Stress intensity factor
Defect assessment using failure assessment diagrams
Life prediction of cracked components and structures using level I, II and III FADs
Fracture mechanics based inspection
Paris law, Fatigue crack length estimation and inspection using the Paris law
Corrosion-fatigue testing and analysis of offshore monopile weldments
An introduction to corrosion-fatigue testing and analysis, Environmental Reduction Factor, Estimation of crack growth acceleration in free-corrosion environment, Demonstration of a case study: SLIC Joint Industry Project
Welding residual stresses in offshore wind monopiles
Residual stress measurement using destructive and non-destructive techniques, welding sequence effects on residual stress distribution in offshore wind monopiles, residual stress effects on fatigue crack initiation and propagation, demonstration of a case study: residual stress measurements in monopile weldments using neutron diffraction and contour techniques
Dr Ali Mehmanparast (PhD, CEng, MBA) is a Senior Lecturer in Structural Integrity at Cranfield University and the Manager of the Cranfield-Oxford-Strathclyde Universities’ Renewable Energy Marine Structures Centre for Doctoral Training (REMS CDT). Ali sits on the Engineering Integrity Society (EIS) Durability and Fatigue committee, the UK Forum for Engineering Structural Integrity (FESI Council) and is a member of the European Structural Integrity Society (ESIS). He is a Chartered Engineer of IMechE and a fellow of The Higher Education Academy. He has more than 80 peer reviewed journal and conference papers in the field of engineering structural integrity, and has organised and chaired technical sessions at international conferences. Ali is the manager of the Structural Integrity Laboratory at Cranfield University and a member of the technical delivery team for the Structural Lifecycle Industry Collaboration (SLIC) Joint Industry Project. Moreover, he is the PI of the Rutherford Appleton Laboratory funded project on welding residual stress measurements in offshore wind turbine monopiles, the academic lead of the Carbon Trust funded project on offshore wind turbine foundation flange study and the PI of the Cranfield-Imperial SUPERGEN Wind Hub funded project on floating offshore wind turbine foundations.
Attendance certificates are available on request after the completion of the webinar.
The cost of registering for this webinar will be £90+VAT.
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