TMM4195 - Fatigue Design


Examination arrangement

Examination arrangement: School exam
Grade: Letter grades

Evaluation Weighting Duration Grade deviation Examination aids
School exam 100/100 4 hours D

Course content

This course deals with fundamental and technical issues associated with designing and maintaining structures that resist failure from cyclic loading. Students will be taught the principles of fatigue testing and analyzing fatigue failures of materials, addressing the questions how fatigue behavior is characterized, how fatigue failure is predicted, which physical mechanisms are responsible for fatigue initiation and propagation in various materials with particular attention to metals and structural alloys, and how such a behavior is related to the microstructure of the material. This course will also introduce key applications of fatigue design in industry including failure analysis, fatigue life calculations and experimental techniques and destructive and non-destructive methods of damage detection and characterization.

Main Topics:

  • Cyclic deformation
  • Fatigue crack initiation
  • Stress-life fatigue behavior
  • Strain-life fatigue behavior
  • Fracture mechanics and fatigue crack propagation
  • Environmental effects

Learning outcome

Knowledge :

  • Fatigue mechanisms.
  • Description of fatigue phenomenon.
  • Fatigue life concept.
  • Methodology for designing against fatigue.
  • Methodology for fatigue-crack-growth analysis.

Skills :

  • Capability to use traditional methods for designing mechanical components against fatigue.
  • Capability to use crack-growth analysis for life assessment of mechanical components containing cracks and crack-like defects.

General competence:

To be able to evaluate fatigue damage and to design machines and structures against fatigue and to predict the expected life of components in service.

Learning methods and activities

Lectures: Both presentations and blackboard are used in parallel. Some lectures can be performed "digitally". Teaching materials are provided through Blackboard. The purchase of text-books is not necessary for the successful completion of this course though it is encouraged for additional learning. Self-made notes during the lectures are encouraged since the lectures include the material and discussion which are hardly available in textbooks.

Exercises: 11 assignments will be given during the course, of which 10 aim at solving problems and 1 is essay based on self-study of the topic given. 10 approved of total 11 assignments are required to qualify for the exam. The lectures and exercises are in English when students who do not speak Norwegian take the course. If the teaching is given in English the examination papers will be given in English only. In this case the students also have to reply in English.

Compulsory assignments

  • Exercises

Further on evaluation

10 approved of total 11 assignments are required to qualify for the exam. If there is a re-sit examination, the examination form may be changed from written examination to oral. For a re-take of an examination, all assessments during the course must be re-taken. Non-programmable scientific calculators, which are not listed among the "specific basic calculators", and calculators having no access to the Internet can be allowed for the exam upon approval from the course coordinator.

Specific conditions

Compulsory activities from previous semester may be approved by the department.

Course materials

Main: N. Dowling " Mechanical Behavior of Materials", Pearson Prentice Hall, 2007 (or later). Optional: S. Suresh, "Fatigue of Materials" (2d edition) Cambridge University Press, 1998 Ralph I. Stephens, Ali Fatemi, Robert R. Stephens, Henry O. Fuchs "Metal Fatigue in Engineering", 2nd Edition 2000 Wiley Radaj, Dieter, Vormwald, Michael "Advanced Methods of Fatigue Assessment", Springer 2013

Credit reductions

Course code Reduction From To
SIO2077 7.5
More on the course



Version: 1
Credits:  7.5 SP
Study level: Second degree level


Term no.: 1
Teaching semester:  AUTUMN 2022

Language of instruction: English

Location: Trondheim

Subject area(s)
  • Technological subjects
Contact information
Course coordinator: Lecturer(s):

Department with academic responsibility
Department of Mechanical and Industrial Engineering


Examination arrangement: School exam

Term Status code Evaluation Weighting Examination aids Date Time Examination system Room *
Autumn ORD School exam 100/100 D 2022-11-29 09:00
Room Building Number of candidates
Summer UTS School exam 100/100 D
Room Building Number of candidates
  • * The location (room) for a written examination is published 3 days before examination date. If more than one room is listed, you will find your room at Studentweb.

For more information regarding registration for examination and examination procedures, see "Innsida - Exams"

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