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Course Co-ordinated by IISc Bangalore
Coordinators
 
Prof. V. Jayaram
IISc Bangalore

 

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The course begins with a review of stress, strain, linear elasticity and plastic deformation in crystalline materials. We then examine the physics of fracture, the driving forces for why things break in idealized brittle systems under thermodynamic reversibility and how one can take irreversible behaviour into account through cohesive zones.

We then look at the mathematical formalism of stress intensity factors through the example of a crack subject to mode III (antiplane shear) loading. Microstructural effects are introduced in 2 classes of systems: brittle materials that can be toughened through mechanisms such as phase transformation and fibre reinforcement and how flaws initiate and grow in ductile materials. We conclude with sub-critical crack growth and how toughness can be tested in practice.

 

Sl. No

Topic

Lectures

1.

Review of linear elasticity and elementary plastic deformation

5

2.

Theoretical strength and thermodynamics of fracture

6

3.

Linear elastic fracture mechanics

5

4.

Plastic zone and cohesive zone models, introduction to J-integral

5

5.

Microstructural aspects of fracture in brittle and ductile materials, genesis of flaws

10

6.

Toughening in brittle systems, Crack resistance curves

5

7.

Physics of sub-critical crack growth (cyclic and static fatigue)

5

8.

Fracture toughness testing

4

A first course on mechanical properties of materials


  1. Fracture of Brittle Solids, B.R.Lawn, Cambridge University Press (1993)

  2. Mechanical Behaviour of Materials, Thomas H. Courtney, McGraw Hill (1990)

  3. Engineering Fracture Mechanics, David Broek, Sijthoff and Nordhoff. The Netherlands (1978)

  4. Deformation & Fracture of Engineering Materials, Richard Hertzberg, John Wiley (1996)


  1. Contact, Adhesion And Rupture Of Elastic Solids, D.Maugis, Springer (2000)

  2. Advanced Fracture Mechanics, Melvin F. Kanninen, Carl H. Popelar, C. H. Popelar, Oxford mUniversity Press (1985)



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