Optimal Fatigue Testing
A typical SN curve identifies the 50% fracture rate for a given level of loading. But even if the fractures were not consequential, it [...]
Fatigue Crack Initiation
The image on the left is a time lapse animation of a crack initiating and growing from a notch in super-elastic nitinol. It is [...]
In Vivo Strain Measurement
Using medical imaging data to design better implants is passion for me. On the left is an image from a paper I published with [...]
Non-Zero Mean Stress
We were curious about how mean stress would affect the fatigue life of the gStent-BE standardized test stent so we designed an experiment to [...]
Model Validation Data
I built a Finite Element Model of the gStent-BE and compared the force/displacement response with data from an experiment on my Bose 3220 Dynamic [...]
Stent Fatigue Testing
Today I presented preliminary results of our inter-laboratory fatigue study at the FDA/NHLBI/NSF Workshop. Dimensional variances were characterized for the gStent-BE and found typical [...]