Metal Structures and Components of Wind Turbines

Eder, M. A. (Organizer), Abrahamsen, A. B. (Organizer), Sarhadi, A. (Organizer), Danielsen, H. K. (Organizer)

Activity: Attending an eventParticipating in or organising workshops, courses, seminars etc.

Description

Metal structures and components for wind turbines
A special course at DTU Wind Energy with focus on the challenges of constructing metal structures and components for wind turbines.
The course was first offered to 5 students as a special course in 2019 and it is the intention to upgrade it to a regular DTU course in 2021. Thus the special course if offered again in 2020 in the autumn semester of DTU.

Link to introduction to the course https://backend.orbit.dtu.dk/ws/portalfiles/portal/211010916/Metals_in_wind_turbines_1May2020.mp4  

Course information

Danish title                             Metalstrukturer og komponenter for vindmøller

Language of instruction          English

Point(ECTS)                             5

Course type                            MSc (run as special course in 2020)

Schedule                                Autumn E3A (Tuesday morning 8-12)

Location                                 Campus Lyngby

Scope and form                      Lectures, discussions, exercises

Duration of Course                 13 weeks

Date of examination               E3A slot

Type of assessment                Oral examination (75 %) and assignments (25 %), one combined grade is given(overall assessment). To pass the course, both the oral exam and the written reports must be passed.

Aid                                         Written works of reference are permitted (assignments)

Evaluation                              7step scale

Previous course                      None

Not applicable together with  None

Recommended prerequisites  Basic understanding of materials science and basic understanding of stress/strain tensors

Responsible                           

 HilmarDanielsen hkda@dtu.dk

 Martin Eder maed@dtu.dk

 Asger Bech Abrahamsen asab@dtu.dk

 Ali Sarhadi asar@dtu.dk

Department                            46DTU Wind Energy

Registration sign up               studies@windenergy.dtu.dk


Learning objectives

A student who has met the objectives of thecourse will be able to:

· Calculatebasic loads affecting wind turbine components

· Identifycritical material properties of metals - particularly steel - for wind turbines

· Calculatethe ultimate limit state capacity of different components and welded connectiondetails under the consideration of residual stress and welding flaws

· Calculatethe high cycle fatigue lifetime of metal structures and components underdifferent loading conditions

· Calculatethe effectiveness of corrosion protection measures for offshore structures

· Describethe purpose and utilization of magnetic materials used in wind turbinegenerators and explain the main types of generator systems currently used

· Analyzemechanical failure modes of wind turbine support structures and other crucial components,such as the tower, bolts or bearings

Content

Microstructure of steels, cast iron and magnetic alloys. Mechanical properties and heat treatment of steel. Basic concepts of loads and their effect on the structural performance of wind turbines. The concepts of load induced static and cyclic mechanical stress and its effect on the ultimate strength and high cycle fatigue life. Basic concepts of welding technology and the origin and mitigation of residual stress effects. Illustration of specific and prominent failure cases occurring in wind turbine towers,bearings, gearboxes and bolts. Fundamental theory of corrosion and basic concepts of corrosion protection systems. Fundamental theory of magnetism,iron-boron magnets and their application in wind turbine generators. Four written assignments are dedicated to: (1) ultimate limit state and elastic stability limit calculations; (2) fatigue lifetime calculations; (3) corrosion and corrosion protection and (4) magnetism and generator concepts. The aim of this course is to facilitate deep understanding of the theoretical concepts and their application to wind turbine components in practice. Exercises and mechanical experiments are an integrated part of the curriculum.

PeriodSep 2020Dec 2020
Event typeCourse
LocationLyngby, Denmark
Degree of RecognitionLocal