J. Phys. IV France
Volume 05, Numéro C8, Décembre 1995International Conference on Martensitic Transformations – ICOMAT 95
|Page(s)||C8-1247 - C8-1252|
|Publié en ligne||14 juillet 2014|
An Apparatus to Measure the Shape Memory Properties of Nitinol Tubes for Medical Applications
Stanford University, Palo Alto, CA 94305, U.S.A.
2 Nitinol Devices & Components Inc., 48501 Warm Springs Blvd. 117, Fremont, CA 94539, U.S.A.
A new apparatus has been developed to characterize the shape memory properties of Nitinol tubes and stents. In tests run on this apparatus, the samples are deformed in the radial direction in the martensitic state to a prescribed outer-fiber strain. Recovery strain and force are monitored continuously on heating. Values of properties as measured on this apparatus are compared to corresponding values from three-point and four-point bending tests, as well as DSC. We have found that this is a fast and reliable system to test transformation temperatures and recovery forces of tubes and stents.
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