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There is no excerpt because this is a protected post. Medical device manufacturers are increasingly required to demonstrate that their products are safe and effective when subjected to complex loading conditions in the human body such as when the device may experience combinations of bending, twisting and compression. Physical test methods are difficult to implement in such cases, can only consider a finite number of [...] You may download our presentation where we give results from recent in-vitro tests and advanced finite element analysis simulations as an example of a comprehensive and self-consistent engineering methodology for understanding therapeutic applications of RF tissue ablation. .
Radial force behavior is one of many engineering design criteria important to the design of implantable medical devices such as stents. Interpretation and extrapolation of bench-top data to predict in-vivo performance necessitates a thorough understanding of influence parameters such as boundary conditions and material uncertainty. An integrated modeling and test validation approach is needed to [...] Phase shifted moire interferometry of crack and transformation zone in Nitinol fatigue specimen. You can download our presentation of Nitinol fatigue and fracture initiation using phase shifted moire interferometry. An overview of the typical in-vitro test methods used to characterize the performance of Nitinol stents is presented. Characterization requires a consistent definition and understanding of radial force as well as a consideration of the sensitivity of the various methods to friction, fixture compliance, material uncertainty and other experimental factors. These sensitivities are demonstrated using [...] At the 2006 SMST Conference in Asilomar Dr. Paul and I had he privilege of sharing our experience of working with Nitinol and particularly FEA of Nitinol during a full day tutorial. It was an honor to have an hour to discuss the ins and outs of modeling Nitinol using FEA. You can download our [...] The transformation behavior of Nitinol under uniaxial tension and four-point bending was investigated. A novel sample geometry produced from drawn tubing was used to observe the differences caused by localized phase transformation effects between the two types of loading and between samples with different process and load histories. Phase shifted moiré interferometry was used to [...] I began building my wooden boat in 1995, just after I moved to Beaverton, OR. I wanted a boat I could take out for overnight trips, either on the Williamette River or around the barrier islands off the Coast of Georgie. I had never undertaken a serious woodworking project before, so it needed to be [...] There is no excerpt because this is a protected post. |
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