Brudmekanik og udmattelse

2018/2019

Forudsætninger/Anbefalede forudsætninger for at deltage i modulet

Prerequisites:

The module adds to the knowledge obtained in Structural Mechanics.

Modulets indhold, forløb og pædagogik

Students who complete the module:

Læringsmål

Viden

  • Have gained a comprehensive understanding of fracture mechanics.
  • Have gained knowledge in applying classical methods in designing against fatigue fracture by studying notches and their effect, by studying strainfatigue, and by analysing eigen-stress states.
  • Have gained an understanding of how to apply fracture mechanics in the assessment of reliability of practical designs and machine elements.

Færdigheder

  • Be able to assess the stability of cracks using Griffith’s and Irwin’s fracture criteria, energy release rate, and toughness concepts.
  • Be able to apply linear elastic solutions for sharp cracks and obtain the stress intensity factor.
  • Be able to assess mixed mode loading and apply crack growth direction hypotheses.
  • Be able to assess crack growth by fatigue, partial damage and load spectra.
  • Be able to assess crack initiation, notches and their effect.
  • Be able to determine life time and apply methods for improving the fatigue strength and life time of machine elements and welded details.

Kompetencer

  • Be able to understand and apply linear elastic concepts in assessing the stability of cracked structures under static and fatigue loading.
  • Be able to distinguish between different fatigue regimes, i.e. elastic or plastic, and un-cracked or pre-cracked, and apply correct methodology to each case in relevant structures.
  • Be able to determine the lifetime of welded components, and explain fatigue in welded components on the basis of fracture mechanical concepts.

Undervisningsform

Lectures, etc. supplemented with project work, workshops, presentation seminars, lab tests.

Omfang og forventet arbejdsindsats

The module is 5 ECTS which is corresponding to 150 hours of study.

Eksamen

Prøver

Prøvens navnBrudmekanik og udmattelse
Prøveform
Skriftlig eller mundtlig
Exam format:

Individual oral or written exam. Exam format is decided on by start of semester.
ECTS5
Bedømmelsesform7-trins-skala
CensurIntern prøve
VurderingskriterierEvaluation criteria:

As stated in the Joint Programme Regulations.

http:/​/​www.engineering.aau.dk/​digitalAssets/​332/​332984_faellesbestemmelser_230617.pdf

Fakta om modulet

Engelsk titelFracture Mechanics and Fatigue
ModulkodeB-BK-K3E-13
ModultypeKursus
Varighed1 semester
SemesterEfterår
ECTS5
UndervisningssprogEngelsk
UndervisningsstedCampus Esbjerg
Modulansvarlig

Organisation

StudienævnStudienævnet for Byggeri og Anlæg
FakultetDet Ingeniør- og Naturvidenskabelige Fakultet