Congratulations, Dr. Samuel Present! This week, Sam successfully defended his thesis titled “The Influence of Surface Roughness and Microstructure on the Fatigue Behavior of Additively Manufactured Ti-6Al-4V”. It was a celebration well earned.
![](https://hemkerlab.jhu.edu/wp-content/uploads/2023/08/2023_Group_SamDefense_2-1024x643.jpg)
![](https://hemkerlab.jhu.edu/wp-content/uploads/2023/08/SAM_cans-1024x686.jpg)
![](https://hemkerlab.jhu.edu/wp-content/uploads/2023/08/IMG_2215-2-768x1024.jpg)
![](https://hemkerlab.jhu.edu/wp-content/uploads/2023/08/IMG_2219-1-768x1024.jpg)
Congratulations, Dr. Samuel Present! This week, Sam successfully defended his thesis titled “The Influence of Surface Roughness and Microstructure on the Fatigue Behavior of Additively Manufactured Ti-6Al-4V”. It was a celebration well earned.