This Presentation covers the basic concepts of Crack Deformation Modes in an easy version. For more information, please refer the books mentioned in the references slide.... Thank you
3. CRACK
A break or split in material without a complete
separation of parts.
Generally, the term is used to describe breaks in
solid material such as metals, stone, ceramics
etc…
8. FRACTURE
A fracture is the separation of an object or material
into two or more pieces under the action of stress.
The fracture of a solid usually occurs due to the
development of certain displacement discontinuity
surfaces within the solid.
9. TYPES OF FRACTURE
Classification is based on the ability of a material to
experience plastic deformation.
Ductile fracture
◦ Accompanied by significant plastic deformation
Brittle fracture
◦ Little or no plastic deformation
◦ Sudden, catastrophic
10. MODES OF CRACK
DEFORMATION
Irwin was one of the first to study the behavior
of cracks.
He introduced three different loading modes,
which are still used today.