Fracture Mechanics

1
Mechanics of Materials Lab

• Lecture 14
• Fracture Mechanics
• Mechanical Behavior of Materials Section 8.3-8.7
• Jiangyu Li
• University of Washington

2
Stress Intensity Factor Tension
3
Stress Intensity Factor Bending
4
Stress Intensity Factor Circumferential Crack
-
5
Stress Intensity Factor
6
Circular Crack
7
Elliptical Crack
8
Superposition
9
Superposition
10
Plastic Zone
11
K field
12
Limitation of LEFM
13
Effect of Thickness
14
Load Displacement Curve
15
Correlation with Strength
16
Effect of Temperature and Rate
17
Effect of Temperature and Rate
18
Fracture Surface
19
Energy Release Rate
20
Assignment

• Mechanical Behavior of Materials
• 8.29, 8.41