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 [...]
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 [...]
FEA Predicts Fatigue
One major success of the gStent-BE as a standard test stent is the consistent fracture location during axial fatigue loading. All reported fractures occurred [...]
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 [...]
Computational Modeling of Cardiovascular Devices
I was given the opportunity to discuss the State-of-the-Art Computational Modeling for Cardiovascular Devices at the FDA/NHLBI/NSF Workshop at the FDA White Oaks campus [...]