1. Structure-Property Linkages of Aluminum Foams
Marshall Johnson
Materials Informatics – Progress Report 2
Mentor: Yuksel Yabansu

2. Motivation Why Metal Foams? – Great Properties
Mechanical
Thermal
Electrical
Acoustic
Previous Work: Modeling of effective thermal conductivity (λeff) for open cell aluminum foam
Room for improvement?
Reasonable to want both excellent thermal & mechanical properties – how do these correlate?
Plan
Structure-Property Linkage with C11 elastic stiffness component
Correlations between thermal & elastic properties 2

3. Example Foam Structures
4 Structural Parameters
Average pore size [10-30]
Average ligament thickness [0-4]
Pore size standard deviation [0-5]
Ligament thickness standard deviation [0-2]

4. 2-Point Statistics - Autocorrelations
Pore Size: 10
Pore Size SD: 0
Ligament Thickness: 1
Ligament SD: 0
Pore Size: 26
Pore Size SD: 5
Ligament Thickness: 4
Ligament SD: 2
Pore Size: 16
Pore Size SD: 4
Ligament Thickness: 3
Ligament SD: 2

5. Basis Vectors Φ1 Φ2 Φ3

6. Mean Vector

7. Variance Described

8. Color Scaled by Pore Size

9. Color Scaled by Ligament Thickness

10. Color Scaled by Pore SD

11. Color Scaled by Ligament SD

12. PCA by Thermal Conductivity

13. Next Steps Continue running Abaqus simulations
Won’t have all 3507 by November
Make sure simulations span the parameter space
Structure-Property Linkage with elastic constant
Elastic – Thermal property correlations