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- W2735672643 abstract "Nitinol stents continuously experience loadings due to pulsatile pressure, thus a given stent design should possess an adequate fatigue strength and, at the same time, it should guarantee a sufficient vessel scaffolding. The present study proposes an optimization framework aiming at increasing the fatigue life reducing the maximum strut strain along the structure through a local modification of the strut profile.The adopted computational framework relies on nonlinear structural finite element analysis combined with a Multi Objective Genetic Algorithm, based on Kriging response surfaces. In particular, such an approach is used to investigate the design optimization of planar stent cell.The results of the strut profile optimization confirm the key role of a tapered strut design to enhance the stent fatigue strength, suggesting that it is possible to achieve a marked improvement of both the fatigue safety factor and the scaffolding capability simultaneously. The present study underlines the value of advanced engineering tools to optimize the design of medical devices." @default.
- W2735672643 created "2017-07-21" @default.
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- W2735672643 date "2017-09-01" @default.
- W2735672643 modified "2023-10-16" @default.
- W2735672643 title "Multi-objective optimization of nitinol stent design" @default.
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- W2735672643 doi "https://doi.org/10.1016/j.medengphy.2017.06.026" @default.
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