Fracture Mechanics 2

Course guarantor:

Lecturer:

Tutor:

Supervisor:

Department of Materials

Synopsis:

Parameters of non-linear elastic-plastic fracture mechanics. Fracture toughness of structural alloys in the case of general yielding. Fatigue of materials - fundamentals, fatigue crack propagation under various conditions, application of fracture mechanics. Case studies.

Requirements:

Fracture Mechanics 1

Elastomechanics

Plasticity

Fatigue of Materials

Syllabus of lectures:

1.Limitations of linear elastic fracture mechanics, parameters of nonlinear elastic-plastic fracture mechanics for stresses close or above yield

2.Crack (tip) opening displacement COD (CTOD)

3.J integral

4.Fracture toughness of structural materials in the case of general yielding

5.Relations between parameters of fracture mechanics, possibilities and limitations of nonlinear elastic-plastic fracture mechanics

6.Fundamentals of fatigue of structural materials

7.Fatigue crack propagation under various service or testing conditions

8.Fatigue crack growth rate as a function of stress intensity factor range

9.Threshold stress intensity factor range for fatigue crack growth

10.Problems of short fatigue cracks

11.Examples and case studies

Syllabus of tutorials:

Study Objective:

Knowledge: To obtain basic theoretical knowledges from nonlinear fracture mechanics and fatigue of materials.

Skills: Ability to solve simple practical problems dealing with the bodies with cracks in elasto-plastic stress state and bodies under a the time variable loading.

Study materials:

Key references:

[1] Kunz, J.: Applied Fracture Mechanics. Praha, Vydavatelství ČVUT 2005 (in Czech).

Recommended references:

[1] Saxena, A.: Nonlinear Fracture mechanics for engineers. Boca Raton, CRC Press 1989.

[2] Schijve, J.: Fatigue of structures and materials. Springer 2009.

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans: