SYMPOSIA PAPER Published: 01 January 2010
STP48991S

An Investigation of Factors Impacting Nitinol Wire Fatigue Life

Source

The purpose of this study is to identify factors that affect superelastic Nitinol fatigue resistance using a commercially available wire specimen. The study reveals the fatigue resistance of Nitinol wire as functions of surface finish, inclusions, processing, and applied stress applied. Nitinol wires were fatigue tested using the rotating beam fatigue method. The sample strains were verified using a direct strain-measurement method. Wires with outer diameters ranging from 0.127 to 0.343 mm processed with a mechanical and/or electropolished surface finish were compared to one another.

Author Information

Wong, S.
Abbott Vascular, Santa Clara, CA
Lin, Z., C.
Abbott Vascular, Santa Clara, CA
Tahran, A.
Abbott Vascular, Santa Clara, CA
Boylan, J.
Abbott Vascular, Santa Clara, CA
Pike, K.
Abbott Vascular, Santa Clara, CA
Kramer-Brown, P.
Abbott Vascular, Santa Clara, CA
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Details
Developed by Committee: E08
Pages: 99–107
DOI: 10.1520/STP48991S
ISBN-EB: 978-0-8031-8418-3
ISBN-13: 978-0-8031-7501-3