Page 214 - MATERIAL SCIENCE AND ENGINEERING PART 1

Failure of 1 2 3
3

materials

Steps in Crack grows
90 to

ductile applied
stress

fracture

1. Necking 2. Formation of micro-voids 3. Coalescence of micro-voids to form a crack

45 to Cup and

maximum cone

shear stress fracture

195
4. Crack propagation by shear deformation 5. Fracture

Politeknik Ibrahim Sultan