E N D
4. Initiation & Propagation 
6.   Cleavage Mechanism I.    Brittle transgranular fracture
	A. BCC and HCP metals only
		 
18. Ductile Mechanism Ductile Fracture in all metals
 
25. Fracture Modes 
26. Dimple Formation: Mode I 
27. Dimple Formation: Mode II 
30. Failure Stresses Shear stresses produce plastic deformation
Ductile Failure: Shear Stress Driven
2. 	Normal stresses tend to open up cavities, cracks
Brittle Failure : Normal Stress Driven 
31. What Kind of Fracture? 
32. What Kind of Fracture?